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  • 1
    Call number: AWI G6-19-92375
    In: Berichte / Christian-Albrechts-Universität zu Kiel, Institut für Geowissenschaften, Nr. 9
    Type of Medium: Monograph available for loan
    Pages: 278 Seiten , Illustrationen
    ISSN: 0175-9302
    Series Statement: Berichte / Christian-Albrechts-Universität zu Kiel, Institut für Geowissenschaften 9
    Language: German
    Note: Zugleich: Dissertation, Christian-Albrechts-Universität zu Kiel, 1999 , INHALTSVERZEICHNIS 1. Einleitung 1.1 Kenntnisstand und offene Fragen 1.2 Fragestellung und Ziele dieser Arbeit 2. Umweltbedingungen in den Arbeitsgebieten 2.1 Hydrographie, Eisverhältnisse und NAO 2.2 Zur Variation von Wassertiefe und Breite der Dänemarkstraße und zur Vereisung Islands während des letzten Glazials 3. Methoden 3.1 Auswahl der Kernstationen 3.2 Probennahme und Analysen (Übersicht) 3.3 Zur Rekonstruktion von Paläobedingungen im Oberflächenwasser Zur Aussage stabiler Isotopenverhältnisse in planktischen Foraminiferen Zur Messung stabiler Isotopenverhältnisse Zur Massenspektrometrie Zur Rekonstruktion von Oberflächentemperaturen Alkane und Alkohole als Maß für Staubeintrag Eistranspmtiertes Material und vulkanische Aschen 3.4 Zur Rekonstruktion von Paläobedingungen im Zwischen-/ Tiefenwasser Häufigkeit von Cibicides- und anderen benthischen Arten (inkl. Taxonomie) Stabile Isotopenverhältnisse in benthischen Foraminiferen 3.5 AMS 14C-Datierungen Probenreinigung 3. 6 Hauptelementanalysen von vulkanischen Asche-Leithorizonten 3. 7 Geomagnetische Meßgrößen und magnetische Suszeptibiltät 3.8 Techniken zur Spektralanalyse 4. Methodische Ergebnisse 4.1 Zum Einfluß der Probenreinigung auf δ18O-/ δ13C-Werte 4.2 Probleme bei der langfristigen Reproduzierbarkeit von δ18O-Zeitreihen 4.3 Einfluß der Korngröße und Artendefinition planktischer Foraminiferen auf SST-Rekonstruktionen in hohen Breiten 4.4 Vergleich der stabilen Isotopenwerte von Cibicides lobatulus und Cibicidoides wuellerstorfi 5. Stratigraphische Grundlagen und Tiefenprofile der Klimasignale 5.1 Stratigraphische Korrelation zwischen parallel-gekernten GKG- und SL-/KL-Profilen 5.2 Flanktische δ18O-/ δ13C-Kurven, 14C-Alter und biostratigraphische Fixpunkte Westliches Islandbecken Kern PS2644 Kern PS2646 Kern PS2647 Kern 23351 Vøring-Plateau Kern 23071 Kern 23074 5.3 Benthische δ18O-/ δ13C-Werte in Kern PS2644 5.4 Siliziklastische Sedimentkomponenten: Eistransportiertes Material Westliches Islandbecken Kern PS2644 Kern PS2646 Kern PS2647 Vøring-Plateau Kern 23071 Kern 23074 5.5 Vulkanische Glasscherben in Kern PS2644: Wind- und Eiseintrag 5.6 Geochemie und Alter einzelner Tephralagen als Leithorizonte Westliches Islandbecken Kern PS2644 Kern PS2646 Kern PS2647 Vøring-Plateau Kern 23071 Kern 23074 5.7 Magnetische Suszeptibilität in den Kernen PS2644, PS2646 und PS2647 Kern PS2644 Kern PS2646 und PS2647 5.8 Geomagnetische Feldintensität und Richtungsänderungen in Kern PS2644 5.9 Variation von Planktonfauna und -flora Westliches Islandbecken: Kern PS2644 Kern PS2646 und PS2647 Vøring-Plateau: Kern 23071 und 23074 5.10 Benthische Foraminiferen in Kern PS2644 6. Entwicklung von Temperatur und Salzgehalt nördlich der Dänemark-Straße 6.1 Variation der Oberflächentemperatur nach Planktonforaminiferen 6.2 Variation der Oberflächentemperatur nach Uk37 6.3 Variation der Oberflächensalinität 7. Die Feinstratigraphie von Kern PS2644 als Basis für eine Eichung der 14C-Altersskala 22 - 55 ka 7.1 Korrelation zwischen den Klimasignalen in Kern PS2644 und der GISP2-Klimakurve zum Kalibrieren der 14C-Alter und Erstellen eines Altersmodells Tephrachronologische Marker Korrelationsparameter und -regeln Sonderfälle/ Probleme bei der Korrelation 7.2 Alters-stratigraphische Korrelation der Klimakurven von Kern 23071 und 23074 7.3 Variation der Altersanomalien zwischen 20 und 55 14C-ka 7.4 Variabilität des planktischen 14C-Reservoiralters in Schmelzwasserbeeinflußten Seegebieten Variation der planktischen 14C-Alter unmittelbar an der Basis von Heinrich-Ereignis 4 Unterschiede zwischen planktischen und benthischen 14C-Altern in der westlichen Islandsee. Zur Erklärung der inversen Altersdifferenzen 7.5 Differenz zwischen 14C- und Kalenderalter: Zeitliche Variation unter Einfluß des Erdmagnetfeldes - Modell und Befund 7.6 Sedimentationsraten der Kerne 23071, 23074 und PS2644 nach dem GISP2-Altersmodell Vøring-Plateau: Kerne 23071 und 23074 Südwest-Islandsee: Kern PS2644 8. Klimaoszillationen im Europäischen Nordmeer in der Zeit und Frequenzdomäne 8.1 "Der Einzelzyklus" in den Klimakurven von Kern PS2644 8.2 Zur Veränderlichkeit der Warm- und Kaltextreme sowie Zyklenlänge Besonderheiten in der Zyklenlänge Variation der Kalt-(Stadiale) Variation der Interstadiale 8.3 Periodizitäten der Klimasignale im Frequenzband der D.-Oe.-Zyklen. Der D.-Oe.-Zyklus von 1470 J., seine Multiplen und harmonischen Schwingungen Weitere Frequenzen: 1000-1150 Jahre- und 490- 510 Jahre-Zyklizitäten Höhere Frequenzen im Bereich von Jahrhunderten und Dekaden 8.4 Phasenbeziehungen und (örtliche) Steuemngsmechanismen der Dansgaard-Oeschger-Zyklen 9. Schlußfolgerungen Danksagung Literaturverzeichnis Anhang
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  • 2
    Call number: AWI A3-20-93434-2
    In: Meteorologische Abhandlungen / Institut für Meteorologie und Geophysik der Freien Universität Berlin, Band XXXII, Heft 2
    Type of Medium: Series available for loan
    Pages: 218 Seiten , Illustrationen
    Series Statement: Meteorologische Abhandlungen / Institut für Meteorologie und Geophysik der Freien Universität Berlin 32,2
    Language: German
    Note: Zugleich: Dissertation, Freie Unversität Berlin, [ca. 1963] , INHALTSVERZEICHNIS PROBLEMSTELLUNG UND ZIELSETZUNG 1. BEMERKUNGEN ZUM BEOBACHTUNGSGELÄNDE UND ZUM BEOBACHTUNGSMATERIAL 1.1 Das Beobachtungsgelände 1.2 Das Beobachtungsmaterial 2. HOMOGENITÄTSBETRACHTUNGEN 2.1 Temperatur 2.2 Niederschlag 2.3 Wind 2.4 Sonnenschein und Bewölkung 3. TEMPERATURVERHÄLTNISSE 3.1 Monats- und Jahreswerte 3.2 Tageswerte 3.3 Pentadenwerte 3.4 Häufigkeitsbetrachtungen 3.5 Interdiurne Veränderlichkeit 3.6 Der tägliche Gang 3.7 Vorkommen bestimmter Schwellenwerte 3.71 Frost- und Eistage 3.72 Sommer- und Tropentage 4. DER WASSERGEHALT DER LUFT 4.1 Monats- und Jahreswerte 4.2 Tageswerte 4.3 Häufigkeitsbetrachtungen 4.4 Interdiurne Veränderlichkeit 4.5 Der tägliche Gang 5. BEWÖLKUNGSVERHÄLTNISSE 5.1 Monats- und Jahreswerte 5.2 Tageswerte 5.3 Häufigkeitsbetrachtungen 5.4 Der tägliche Gang 5.5 Heitere und trübe Tage 5.6 Nebel 6. SONNENSCHEIN 6.1 Monats- und Jahreswerte 6.2 Tageswerte 6.3 Der tägliche Gang 7. NIEDERSCHLAGSVERHÄLTNISSE 7.1 Monats- und Jahreswerte 7.2 Niederschlagsbereitschaft 7.3 Tageswerte 7.4 Der tägliche Gang 7.5 Häufigkeitsbetrachtungen 7.6 Niederschlags- und Trockenperioden 7.7 Niederschlag und Wind· 7.8 Schneeverhältnisse 7.81 Schneefall und Schneedecke 7.82 Schneehöhe 7.9 Gewitter 8. WINDVERHÄLTNISSE 8.1 Windrichtung 8.2 Windgeschwindigkeit 8.21 Der jährliche Gang 8.22 Häufigkeitsbetrachtungen 8.23 Sturmtage und Windstillen 8.24 Der tägliche Gang 9.ZUSAMMENFASSUNG VERZEICHNIS DER TEXTTABELLEN VERZEICHNIS DER ABBILDUNGEN LITERATURVERZEICHNIS TABELLENANHANG
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  • 3
    Call number: AWI A3-20-93434
    In: Meteorologische Abhandlungen / Institut für Meteorologie und Geophysik der Freien Universität Berlin, Band XXXII, Heft 1
    Type of Medium: Series available for loan
    Pages: 121 Seiten , Illustrationen
    Series Statement: Meteorologische Abhandlungen / Institut für Meteorologie und Geophysik der Freien Universität Berlin 32,1
    Language: German
    Note: Zugleich: Dissertation, Freie Unversität Berlin, [ca. 1963] , INHALTSVERZEICHNIS PROBLEMSTELLUNG UND ZIELSETZUNG 1. BEMERKUNGEN ZUM BEOBACHTUNGSGELÄNDE UND ZUM BEOBACHTUNGSMATERIAL 1.1 Das Beobachtungsgelände 1.2 Das Beobachtungsmaterial 2. HOMOGENITÄTSBETRACHTUNGEN 2.1 Temperatur 2.2 Niederschlag 2.3 Wind 2.4 Sonnenschein und Bewölkung 3. TEMPERATURVERHÄLTNISSE 3.1 Monats- und Jahreswerte 3.2 Tageswerte 3.3 Pentadenwerte 3.4 Häufigkeitsbetrachtungen 3.5 Interdiurne Veränderlichkeit 3.6 Der tägliche Gang 3.7 Vorkommen bestimmter Schwellenwerte 3.71 Frost- und Eistage 3.72 Sommer- und Tropentage 4. DER WASSERGEHALT DER LUFT 4.1 Monats- und Jahreswerte 4.2 Tageswerte 4.3 Häufigkeitsbetrachtungen 4.4 Interdiurne Veränderlichkeit 4.5 Der tägliche Gang 5. BEWÖLKUNGSVERHÄLTNISSE 5.1 Monats- und Jahreswerte 5.2 Tageswerte 5.3 Häufigkeitsbetrachtungen 5.4 Der tägliche Gang 5.5 Heitere und trübe Tage 5.6 Nebel 6. SONNENSCHEIN 6.1 Monats- und Jahreswerte 6.2 Tageswerte 6.3 Der tägliche Gang 7. NIEDERSCHLAGSVERHÄLTNISSE 7.1 Monats- und Jahreswerte 7.2 Niederschlagsbereitschaft 7.3 Tageswerte 7.4 Der tägliche Gang 7.5 Häufigkeitsbetrachtungen 7.6 Niederschlags- und Trockenperioden 7.7 Niederschlag und Wind· 7.8 Schneeverhältnisse 7.81 Schneefall und Schneedecke 7.82 Schneehöhe 7.9 Gewitter 8. WINDVERHÄLTNISSE 8.1 Windrichtung 8.2 Windgeschwindigkeit 8.21 Der jährliche Gang 8.22 Häufigkeitsbetrachtungen 8.23 Sturmtage und Windstillen 8.24 Der tägliche Gang 9.ZUSAMMENFASSUNG VERZEICHNIS DER TEXTTABELLEN VERZEICHNIS DER ABBILDUNGEN LITERATURVERZEICHNIS TABELLENANHANG
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  • 4
    Call number: AWI P1-14-0015 ; PIK N 454-14-0080
    Description / Table of Contents: Contents: - 1 Land, Leute und Bodenschätze. - 1.1 Die Arktis und ihre Grenzen: eine physisch-geographische Einführung. - 1.2 Geologische Entwicklung und tektonischer Bau der Antarktis. - 1.3 Geschichte der antarktischen Entdeckungen. - 1.4 Abriss der Geschichte der Entdeckung der Arktis. - 1.5 Die indigenen Völker im Norden: frühere und gegenwärtige Entwicklungen. - 1.6 Die mittelalterliche Besiedlung Westgrönlands durch die Wikinger - ein fehlgeschlagenes Experiment?. - 1.7 Permafrost - ein weit verbreitetes Klimaphänomen der Arktis und Subarktis. - 1.8 Die Geologie der Arktis, ihre Bodenschätze und ihr rechtlicher Status. - 2 Meeresströmung, Stürme und Eis. - 2.1 Struktur, Dynamik und Bedeutung des antarktischen Wasserringes. - 2.2 Wassermassenänderungen im Arktischen Ozean. - 2.3 Änderungen in der Nordatlantischen Tiefenwasserbildung und ihre Auswirkungen auf das Europäische Klima. - 2.4 Roaring Forties und Riesenwellen - Gefahren im Südpolarmeer. - 2.5 Polare Mesozyklonen: Die Hurrikane der Polargebiete. - 2.6 Die Wechselwirkung zwischen antarktischen Schelfeisgebieten und dem Ozean und der Beitrag zur ozeanischen Wassermassenbildung. - 2.7 Die Massenbilanzen des antarktischen und grönländischen Inlandeises und der Charakter ihrer Veränderungen. - 2.8 Veränderung der Dicke und Ausdehnung des Polarmeereises. - 3 Flora, Fauna und Ökosysteme. - 3.1 Flora und Vegetation des terrestrischen Bereichs. - 3.2 Ökophysiologie und Wachstum arktischer Pflanzen im Klimawandel. - 3.3 Das Meereis als Lebensraum. - 3.4 Einfluss von Fischerei und Klima auf die Bestände des antarktischen Krill. - 3.5 Klimabedingte ökologische Veränderungen in den Bodenfaunen polarer Schelfmeere. - 3.6 Die Fische des Nord- und Südpolarmeeres. - 3.7 Vogelwelt der Polarregionen und ihre Gefährdung. - 3.8 Robben und Robbenschlag in der Antarktis. - 3.9 Arktische Robben und Eisbären - Auswirkungen von Klimaerwärmung und Ressourcennutzung. - 3.10 Warnsignale Walfang. - 3.11 Marine Biodiversität in den Polarregionen nach der Volkszählung der Meere. - 4 Das Weltklima und die Polarregionen. - 4.1 Wechselwirkungen zwischen arktischem Meereis und der atmosphärischen Zirkulation. - 4.2 Niederschläge in den Polarregionen und ihre Erfassung. - 4.3 Atmosphärische Messungen an der AWIPEV Station Spitzbergen. - 4.4 Das Polarlicht. - 4.5 Erwärmung der Polarregionen in den letzten 50 Jahren: Ursachen und Folgen. - 4.6 Verhalltes Warnsignal: Die Erwärmung ds Nordpolargebietes während der ersten Hälfte des 20. Jahrhunderts. - 4.7 Die Rolle ozeanischer Wärmetransporte für das Klima der Arktis im letzten Jahrtausend. - 4.8 Polareiskerne - Archive globaler Klima- und Umweltveränderungen. - 4.9 Die polaren Meeressedimente als Archiv des Weltklimas. - 4.10 Der katabatische Wind über den polaren Eisschilden. - 4.11 Meeresspiegelanstieg - Eisschilde, Gletscher und thermische Ausdehnung: eine kurze Übersicht. - 4.12 Anmerkungen über Veränderungen in den Eisströmen der Eisschilde. - 4.13 Permafrostbeeinflusste Böden (Kryosole) im Klimawandel. - 4.14 Methanhydrate in arktischen Sedimenten - Einfluss auf Klima und Stabilität der Kontinentalränder. - 5 Forschung, Gefährdung und Schutz. - 5.1 Über die deutschen Forschungsaktivitäten in den Polarregionen. - 5.2 Rückgang des Ozons in der Stratosphäre der Polarregionen. - 5.3 Ausbreitung von Schadstoffen in die Polarregionen. - 5.4 Anreicherung und Effekte von organischen Schadstoffen in der polaren Umwelt. - 5.5 Tourismus und seine Auswirkungen. - 5.6 Globale Gefahren durch intensive Nutzung der Taiga-Wälder. - 5.7 Die Nutzung von Öl- und Gasvorkommen in einer nahezu eisfreien Arktis. - 5.8 Antarktis im Spannungsfeld zwischen Forschung, Tourismus und Umweltschutz. - 5.9 Meeresschutzgebiete in der Antarktis: Lassen sich Schutz- und Fischerei-Interessen verbinden?. - 5.10 Gebietsstreitigkeiten in der Arktis - Ist eine friedliche Beilegung mittels Abgrenzung erreichbar?. - 5.11 Umweltschutz in einer Arktis im Wandel. - 6 Sachregister.
    Description / Table of Contents: Die Polarregionen üben trotz ihrer abgelegenen Lage einen erheblichen Einfluss auf das Weltklima aus. Dies hängt besonders mit den bedeutenden Kopplungsprozessen zwischen dem Eis (Eisschilde, Meereis, Schnee und Permafrost) und der atmosphärischen sowie ozeanischen Zirkulation zusammen. Das Abschmelzen aller polaren Eisschilde würde beispielsweise einen globalen Anstieg des Meeresspiegels um etwa 70 m bewirken. Aber auch schon geringe Schwankungen im polaren Eisvolumen führen zu merklichen Veränderungen des Meeresspiegels. Die Klima-Prognosen der letzen Jahre haben sich weitgehend bestätigt. Die heutigen Messungen zeigen sogar, dass sich das Klima eher schneller ändert als erwartet. Die beobachtete Erderwärmung während des 20. Jahrhunderts hat sich in diesem Jahrhundert fortgesetzt; zurzeit beträgt die mittlere globale Erwärmung über den Kontinenten bereit 0,9°C. Diese Entwicklung wird sich fortsetzen, wenn die Anreicherung der Atmosphäre mit Treibhausgasen (vor allem CO2) anhält. Besorgniserregend ist die Tatsache, dass die heute emittierten CO2-Mengen Jahrhunderte in der Atmosphäre verbleiben. Die Folgen des Klimawandels sind vielfältig. Der Meeresspiegelanstieg stieg von 1,7 mm/Jahr in den 1970/80er Jahren auf jetzt 3 mm/Jahr. Der 5. Sachstandsbericht des IPCC (2013) gibt für den Zeitraum 1993 - 2010 einen globalen mittleren Meeresspiegelanstieg von 3,2 mm/Jahr an. Viele Inselstaaten und tief gelegene Küstenländer, die am wenigsten zur Erderwärmung beitragen, werden am härtesten von den Folgen betroffen sein. Sie sind nicht in der Lage, sich mit Dämmen zu schützen. Die Erwärmung ist am stärksten in der nördlichen Polarregion. Die eisbedeckte Fläche hat sich dort fast halbiert. Auch der Westantarktische Eisschild schrumpft; dort gehen 180 km3 Eis jährlich verlären. Zahlreiche polare Arten, zum Beispiel der Eisbär, drohen ihre Lebensräume zu verlieren. Wir befinden uns bereits jetzt in einem Klimawandel, der bei ungenügendem Klimaschutz zu Temperaturen führen kann, die die Erde seit mindestens einer Million Jahre nicht mehr erlebt hat. Studien zeigen, dass der Mensch maßgeblich für den jetzigen Klimawandel verantwortlich ist. Mit diesen und anderen Themen befassen sich rund 100 Experten im vorliegenden Buch. Die Beiträge sind leicht verständlich geschrieben.
    Type of Medium: Monograph available for loan
    Pages: 375 Seiten , Illustrationen
    ISBN: 9783980966863
    Language: German
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  • 5
    Monograph available for loan
    Monograph available for loan
    Chichester : Wiley Blackwell
    Call number: AWI A6-15-0020
    Description / Table of Contents: This book gives a coherent development of the current understanding of the fluid dynamics of the middle latitude atmosphere. lt is primarily aimed at post-graduate and advanced undergraduate level students and does not assume any previous knowledge of fluid mechanics, meteorology or atmospheric science. The book will be an invaluable resource for any quantitative atmospheric scientist who wishes to increase their understanding of the subject. The importance of the rotation of the Earth and the stable stratification of its atmosphere, with their implications for the balance of larger-scale flows, is highlighted throughout. Clearly structured throughout, the first of three themes deals with the development of the basic equations for an atmosphere on a rotating, spherical planet and discusses scale analyses of these equations. The second theme explores the importance of rotation and introduces vorticity and potential vorticity, as well as turbulence. In the third theme, the concepts developed in the first two themes are used to give an understanding of balanced motion in real atmospheric phenomena. lt starts with quasi-geostrophic theory and moves on to linear and nonlinear theories for mid-latitude weather systems and their fronts. The potential vorticity perspective on weather systems is highlighted with a discussion of the Rossby wave propagation and potential vorticity mixing covered in the final chapter.
    Type of Medium: Monograph available for loan
    Pages: XVIII, 408 Seiten , Illustrationen
    ISBN: 9780470795194
    Series Statement: Advancing weather and climate science
    Language: English
    Note: Contents: Series foreword. - Preface. - Select bibliography. - The authors. - 1 Observed flow in the Earth's midlalitudes. - 1.1 Vertical structure. - 1.2 Horizontal structure. - 1.3 Transient activity. - 1.4 Scales of motion. - 1.5 The Norwegian frontal model of cyclones. - Theme 1 Fluid dynamics of the midlatitude atmosphere. - 2 Fluid dynamics in an inertial frame of reference. - 2.1 Definition of fluid. - 2.2 Flow variables and the continuum hypothesis. - 2.3 Kinematics: characterizing fluid flow. - 2.4 Governing physical principles. - 2.5 Lagrangian and Eulerian perspectives. - 2.6 Mass conservation equation. - 2.7 First Law of Thermodynamics. - 2.8 Newton's Second Law of Motion. - 2.9 Bernoulli's Theorem. - 2.10 Heating and water vapour. - 3 Rotating frames of reference. - 3.1 Vectors in a rotating frame of reference. - 3.2 Velocity and Acceleration. - 3.3 The momentum equation in a rotating frame. - 3.4 The centrifugal pseudo-force. - 3.5 The Coriolis pseudo-force. - 3.6 The Taylor-Proudman theorem. - 4 The spherical Earth. - 4.1 Spherical polar coordinates. - 4.2 Scalar equations. - 4.3 The momentum equations. - 4.4 Energy and angular momentum.- 4.5 The shallow atmosphere approximation. - 4.6 The beta effect and the spherical Earth. - 5 Scale analysis and its applications. - 5.1 Principles of scaling methods. - 5.2 The use of a reference atmosphere. - 5.3 The horizontal momentum equations. - 5.4 Natural coordinates, geostrophic and gradient wind balance. - 5.5 Vertical motion. - 5.6 The vertical momentum equation. - 5.7 The mass continuity equation. - 5.8 The thermodynamic energy equation. - 5.9 Scalings for Rossby numbers that are not small. - 6 Alternative vertical coordinates. - 6.1 A general vertical coordinate. - 6.2 Isobaric coordinates. - 6.3 Other pressure-based vertical coordinates. - 6.4 Isentropic coordinates. - 7 Variations of density and the basic equations. - 7.1 Boussinesq approximation. - 7.2 Anelastic approximation. - 7.3 Stratification and gravity waves. - 7.4 Balance, gravity waves and Richardson number. - 7.5 Summary of the basic equation sets. - 7.6 The energy of atmospheric motions. - Theme 2 Rotation in the atmosphere. - 8 Rotation in the atmosphere. - 8.1 The concept of vorticity. - 8.2 The vorticity equation. - 8.3 The vorticity equation for approximate sets of equations. - 8.4 The solenoidal term. - 8.5 The expansion/contraction term. - 8.6 The stretching and tilting terms. - 8.7 Friction and vorticity. - 8.8 The vorticity equation in alternative vertical coordinates. - 8.9 Circulation. - 9 Vorticity and the barotropic vorticity equation. - 9.1 The barotropic vorticity equation. - 9.2 Poisson's equation and vortex interactions. - 9.3 Flow over a shallow hill. - 9.4 Ekman pumping. - 9.5 Rossby waves and the beta plane. - 9.6 Rossby group velocity. - 9.7 Rossby ray tracing. - 9.8 Inflexion point instability. - 10 Potential vorticity. - 10.1 Potential vorticity. - 10.2 Alternative derivations of Ertel's theorem. - 10.3 The principle of invertibility. - 10.4 Shallow water equation potential vorticity. - 11 Turbulence and atmospheric flow. - 11.1 The Reynolds number . - 11.2 Three-dimensional flow at large Reynolds number. - 11.3 Two-dimensional flow at large Reynolds number. - 11.4 Vertical mixing in a stratified fluid. - 11.5 Reynolds stresses. - Theme 3 Balance in atmospheric flow. - 12 Quasi-geostrophic flows. - 12.1 Wind and temperature in balanced flows. - 12.2 The quasi-geostrophic approximation. - 12.3 Quasi-geostrophic potential vorticity. - 12.4 Ertel and quasi-geostrophic potential vorticities. - 13 The omega equation. - 13.1 Vorticity and thermal advection form. - 13.2 Sutcliffe Form. - 13.3 Q-vector form. - 13.4 Ageostrophic flow and the maintenance of balance. - 13.5 Balance and initialization. - 14 Linear theories of baroclinic instability. - 14.1 Qualitative discussion. - 14.2 Stability analysis of a zonal flow. - 14.3 Rossby wave interpretation of the stability conditions. - 14.4 The Eady model. - 14.5 The Charney and other quasi-geostrophic models. - 14.6 More realistic basic states. - 14.7 Initial value problem. - 15 Frontogenesis. - 15.1 Frontal scales. - 15.2 Ageostrophic circulation. - 15.3 Description of frontal collapse. - 15.4 The semi-geostrophic Eady model. - 15.5 The confluence model. - 15.6 Upper-level frontogenesis. - 16 The nonlinear development of baroclinic waves. - 16.1 The nonlinear domain. - 16.2 Semi-geostrophic baroclinic waves. - 16.3 Nonlinear baroclinic waves on realistic jetson the sphere. - 16.4 Eddy transports and zonal mean flow changes. - 16.5 Energetics of baroclinic waves. - 17 The potential vorticity perspective. - 17.1 Setting the scene. - 17.2 Potential vorticity and vertical velocity. - 17.3 Life cycles of some baroclinic waves. - 17.4 Alternative perspectives. - 17.5 Midlatitude blocking. - 17.6 Frictional and heating effects. - 18 Rossby wave propagation and potential vorticity mixing. - 18.1 Rossby wave propagation. - 18.2 Propagation of Rossby waves into the stratosphere. - 18.3 Propagation through a slowly varying medium. - 18.4 The Eliassen-Palm flux and group velocity. - 18.5 Baroclinic life cycles and Rossby waves. - 18.6 Variations of amplitude. - 18.7 Rossby waves and potential vorticity steps. - 18.8 Potential vorticity steps and the Rhines scale. - Appendices. - Appendix A: Notation. - Appendix B: Revision of vectors and vector calculus. - B.1 Vectors and their algebra. - B.2 Products of vectors. - B.3 Scalar fields and the grad operator. - B.4 The divergence and curl operators. - B.5 Gauss' and Stokes' theorems. - B.6 Some useful vector identities. - Index.
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  • 6
    Monograph available for loan
    Monograph available for loan
    Berlin : Nordeuropa-Inst. der Humboldt-Univ.
    Call number: AWI P5-17-91081
    Description / Table of Contents: Iceland, Greenland and the Faroe Islands have in common their history as Danish dependencies within a historically and geographically coherent region. The complex aftermaths of Denmark's sovereignty over its North Atlantic territories and their ongoing nation building processes lie at the core of this book. Today, we are witnessing region building processes beyond bilateral links to Denmark. How do the countries position themselves, individually and collectively, vis-à-vis the European metropolitan centres, a larger transcontinental North Atlantic region, the "hot" Arctic, and global histories of colonialism and decolonisation? By examining the region from cultural, literary, historical, political, anthropological and linguistic perspectives, the articles in this book shed light on Nordic colonialism and its understanding as "exceptional", and challenge and modify established notions of postcolonialism. Iceland, Greenland and the Faroe Islands are shown to be both the (former) subjects as well as the producers of cultural hierarchisations in an entangled world.
    Type of Medium: Monograph available for loan
    Pages: 422 S.
    Edition: 1. Aufl.
    ISBN: 9783932406355
    Series Statement: Berliner Beiträge zur Skandinavistik 20
    Language: English
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  • 7
    Monograph available for loan
    Monograph available for loan
    Amsterdam : Elsevier
    Call number: AWI G2-18-91738
    Type of Medium: Monograph available for loan
    Pages: XI, 716 Seiten , Illustrationen
    Edition: third edition
    ISBN: 9780123877826
    Language: English
    Note: Contents: Preface. - Acknowledgments. - 1. Data Acquisition and Recording. - 1.1 Introduction. - 1.2 Basic Sampling Requirements. - 1.3 Temperature. - 1.4 Salinity. - 1.5 Depth or Pressure. - 1.6 Sea-Level Measurement. - 1.7 Eulerian Currents. - 1.8 Lagrangian Current Measurements. - 1.9 Wind. - 1.10 Precipitation. - 1.11 Chemical Tracers. - 1.12 Transient Chemical Tracers. - 2. Data Processing and Presentation. - 2.1 Introduction. - 2.2 Calibration. - 2.3 Interpolation. - 2.4 Data Presentation. - 3. Statistical Methods and Error Handling. - 3.1 Introduction. - 3.2 Sample Distributions. - 3.3 Probability. - 3.4 Moments and Expected Values. - 3.5 Common PDFs. - 3.6 Central Limit Theorem. - 3.7 Estimation. - 3.8 Confidence Intervals. - 3.9 Selecting the Sample Size. - 3.10 Confidence Intervals for Altimeter-Bias Estimates. - 3.11 Estimation Methods. - 3.12 Linear Estimation (Regression). - 3.13 Relationship between Regression and Correlation. - 3.14 Hypothesis Testing. - 3.15 Effective Degrees of Freedom. - 3.16 Editing and Despiking Techniques: The Nature of Errors. - 3.17 Interpolation: Filling the Data Gaps. - 3.18 Covariance and the Covariance Matrix. - 3.19 The Bootstrap and Jackknife Methods. - 4. The Spatial Analyses of Data Fields. - 4.1 Traditional Block and Bulk Averaging. - 4.2 Objective Analysis. - 4.3 Kriging. - 4.4 Empirical Orrhogonal Functions. - 4.5 Extended Empirical Orrhogonal Functions. - 4.6 Cyclostationary EOFs. - 4.7 Factor Analysis. - 4.8 Normal Mode Analysis. - 4.9 Self Organizing Maps. - 4.10 Kalman Filters. - 4.11 Mixed Layer Depth Estimation. - 4.12 Inverse Methods. - 5. Time Series Analysis Methods. - 5.1 Basic Concepts. - 5.2 Stochastic Processes and Stationarity. - 5.3 Correlation Functions. - 5.4 Spectral Analysis. - 5.5 Spectral Analysis (Parametric Methods). - 5.6 Cross-Spectral Analysis. - 5.7 Wavelet Analysis. - 5.8 Fourier Analysis. - 5.9 Harmonic Analysis. - 5.10 Regime Shift Detection. - 5.11 Vector Regression. - 5.12 Fractals. - 6. Digital Filters. - 6.1 Introduction. - 6.2 Basic Concepts. - 6.3 Ideal Filters. - 6.4 Design of Oceanographic Filters. - 6.5 Running-Mean Filters. - 6.6 Godin-Type Filters. - 6.7 Lanczos-window Cosine Filters. - 6.8 Butterworth Filters. - 6.9 Kaiser-Bessel Filters. - 6.10 Frequency-Domain (Transform) Filtering. - References. - Appendix A: Units in Physical Oceanography. - Appendix B: Glossary of Statistical Terminology. - Appendix C: Means, Variances and Moment,Generating Functions for Some Common Continuous Variables. - Appendix D: Statistical Tables. - Appendix E: Correlation Coefficients at the 5% and 1% Levels of Significance for Various Degrees of Freedom v. - Appendix F: Approximations and Nondimensional Numbers in Physical Oceanography. - Appendix G: Convolution. - Index.
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  • 8
    Call number: 9781629487991 (e-book)
    Description / Table of Contents: This book described the current status and possible future changes of the thermokarst (thaw) lakes of western Siberia as dominant forms of landscape and regulators of greenhouse gas exchange within the atmosphere. Thawing permafrost and resulting microbial decomposition of previously frozen organic carbon is one of the most significant terrestrial ecosystem positive feedbacks to a warming climate. Ongoing processes of the permafrost thawing in Western Siberia are likely to increase the surface of water bodies via forming so-called thermokarst lakes, mobilizing the organic carbon (OC) from the soil pool to the rivers and, finally, to the ocean, and thus modifying the fluxes of methane (CH4) and CO2 to the atmosphere. Despite their tremendous importance for green house gazes regulation and hydrological regime control, very little is known about hydrochemistry of western Siberia thaw lakes. This book assesses the variation of major and trace elements (TE) and organic carbon (OC) concentration along the chronosequence of lake development and the latitude profile of variable permafrost abundance; characterizes the colloidal status of TE and distinguishes between the relative proportion of organic and organo-mineral colloids; describes the particularity of microbiological composition of thermokarst lake waters and production/mineralization processes in the water column; and presents the perspective of water chemical composition evolution under the climate change scenario. Each of these aforementioned objectives present a scientific challenge given mainly the paucity of existing information on these important but still very poorly studied ecosystems. Taken together, understanding of these issues and identification and quantification of controlling environmental parameters should produce conceptually new knowledge of biogeochemical processes operating within the Western Siberia Plain with the possibility of extrapolation of generated knowledge to much larger territories of arctic and subarctic permafrost-affected areas. (Imprint: Nova)
    Type of Medium: 12
    Pages: 1 Online-Ressource (179 Seiten) , Illustrationen
    ISBN: 9781629487991 (e-book)
    Series Statement: Biochemistry research trends
    Language: English
    Note: Table of Contents Introduction: Thermokarst Lakes of Western Siberia as Dominant Forms of Landscape and Regulators of Greenhouse Gas Exchange with the Atmosphere Chapter 1. Thermokarst Lakes: Distribution, Cycle of Development, Surface Coverage and Evolution Chapter 2. Sources of Dissolved Components in Thermokarst Lakes Chapter 3. Temperature and Gas Regime Chapter 4. Dissolved Organic Carbon Chapter 5. Microbiology of Thermokarst Lake Systems Chapter 6. Trace Elements in Thermokarst Lakes Chapter 7. Colloids in Thermokarst Lakes Chapter 8. Latitude Profile Gradients of Lakes: Substituting Space for Time Chapter 9. Possible Impact of Climate Warming on Stocks and Fluxes of Carbon and Related Elements in Western Siberian Lakes Conclusions: Thaw Lakes as Indicators of Climate Change References Index
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  • 9
    Call number: AWI A13-19-92242
    Description / Table of Contents: Die Dynamik der Atmosphäre der Erde umfasst einen Bereich von mikrophysikalischer Turbulenz über konvektive Prozesse und Wolkenbildung bis zu planetaren Wellenmustern. Für Wettervorhersage und zur Betrachtung des Klimas über Jahrzehnte und Jahrhunderte ist diese Gegenstand der Modellierung mit numerischen Verfahren. Mit voranschreitender Entwicklung der Rechentechnik sind Neuentwicklungen der dynamischen Kerne von Klimamodellen, die mit der feiner werdenden Auflösung auch entsprechende Prozesse auflösen können, notwendig. Der dynamische Kern eines Modells besteht in der Umsetzung (Diskretisierung) der grundlegenden dynamischen Gleichungen für die Entwicklung von Masse, Energie und Impuls, so dass sie mit Computern numerisch gelöst werden können. Die vorliegende Arbeit untersucht die Eignung eines unstetigen Galerkin-Verfahrens niedriger Ordnung für atmosphärische Anwendungen. Diese Eignung für Gleichungen mit Wirkungen von externen Kräften wie Erdanziehungskraft und Corioliskraft ist aus der Theorie nicht selbstverständlich. Es werden nötige Anpassungen beschrieben, die das Verfahren stabilisieren, ohne sogenannte „slope limiter” einzusetzen. Für das unmodifizierte Verfahren wird belegt, dass es nicht geeignet ist, atmosphärische Gleichgewichte stabil darzustellen. Das entwickelte stabilisierte Modell reproduziert eine Reihe von Standard-Testfällen der atmosphärischen Dynamik mit Euler- und Flachwassergleichungen in einem weiten Bereich von räumlichen und zeitlichen Skalen. Die Lösung der thermischen Windgleichung entlang der mit den Isobaren identischen charakteristischen Kurven liefert atmosphärische Gleichgewichtszustände mit durch vorgegebenem Grundstrom einstellbarer Neigung zu(barotropen und baroklinen)Instabilitäten, die für die Entwicklung von Zyklonen wesentlich sind. Im Gegensatz zu früheren Arbeiten sind diese Zustände direkt im z-System(Höhe in Metern)definiert und müssen nicht aus Druckkoordinaten übertragen werden.Mit diesen Zuständen, sowohl als Referenzzustand, von dem lediglich die Abweichungen numerisch betrachtet werden, und insbesondere auch als Startzustand, der einer kleinen Störung unterliegt, werden verschiedene Studien der Simulation von barotroper und barokliner Instabilität durchgeführt. Hervorzuheben ist dabei die durch die Formulierung von Grundströmen mit einstellbarer Baroklinität ermöglichte simulationsgestützte Studie des Grades der baroklinen Instabilität verschiedener Wellenlängen in Abhängigkeit von statischer Stabilität und vertikalem Windgradient als Entsprechung zu Stabilitätskarten aus theoretischen Betrachtungen in der Literatu
    Type of Medium: Dissertations
    Pages: v, 160 Seiten , Illustrationen, Diagramme
    Language: German
    Note: Inhaltsverzeichnis: 1. Einleitung. - 2. Atmosphärische Gleichungssysteme. - 2.1. Zur Notation. - 2.2. Geometrie im β-Kanal. - 2.3. Gleichungen in Flussform. - 2.4. Euler-Gleichungen. - 2.4.1. Energiegleichung. - 2.4.2. Bewegungsgleichungen. - 2.4.3. Flussform des gesamten Gleichungssystems. - 2.4.4. Schallgeschwindigkeit. - 2.4.5. Druck und Energie. - 2.4.6. Energie als Erhaltungsvariable. - 2.5. Euler-Gleichungen mit Referenzfeld. - 2.6. Linearisierte Euler-Gleichungen. - 2.7. Flachwassergleichungen. - 2.8. Flachwasseräquivalente Dynamik mit Euler-Gleichungen. - 3. Unstetiges Galerkin-Verfahren. - 3.1. Räumliche Diskretisierung. - 3.1.1. Integralform und numerischer Fluss. - 3.1.2. Koeffizientendarstellung der Gleichungen. - 3.1.3. Koordinatentransformation mit Orographie. - 3.1.4. Quadratur. - 3.1.5. Basisfunktionen im Rechteckgitter. - 3.1.6. Diskretisierung von analytischen Anfangsbedingungen. - 3.2. Zeitliche Diskretisierung. - 3.2.1. Expliziter Zeitschritt. - 3.2.2. Semi-impliziter Zeitschritt. - 3.2.3. Skalierung von Einheiten. - 3.2.4. Zeitschrittbestimmung. - 3.3. Randbedingungen. - 3.3.1. Periodische Randbedingungen. - 3.3.2. Reflektive Randbedingungen. - 3.3.3. Spezifische Randbedingungen für Euler-Gleichungen. - 3.3.4. Absorptionsschicht. - 3.4. Diffusion. - 4. Atmosphärische Gleichgewichtszustände. - 4.1. Anforderungen an stationäre Zustände. - 4.1.1. Verschwindende Advektion von Masse und potentieller Temperatur. - 4.1.2. Stationäre Impulsgleichung. - 4.2. Wind ohne Corioliskraft. - 4.3. Geostrophischer Wind. - 4.4. Vorgegebener Grundstrom mit einstellbarer Baroklinität. - 4.4.1. Lösungsalgorithmus. - 4.4.2. Zulässige Windfelder und ihre Definition außerhalb des Modellgebietes. - 4.4.3. Spezialfall konstanten thermischen Windes. - 4.5. Barotroper Grundstrom als analytischer Spezialfall. - 4.6. Charakterisierung der Baroklinität. - 4.7. Geostrophischer Zustand für Flachwassergleichungen. - 5. Numerische Stabilität von Gleichgewichtszuständen und Erhaltungseigenschaften. - 5.1. Polynomiale Balancierung des DG-Verfahrens. - 5.1.1. Ausgangssituation („low0bal0“). - 5.1.2. Isotrope Reduktion des Polynomgrades der Quellterme („low1bal0“). - 5.1.3. Isotrope Polynomgradreduktion von Quelltermen sowie Projektion der Flussfunktion („low1bal1“). - 5.1.4. Volle Balancierung mit selektiver Polynomgradreduktion und Projektion der Flussfunktion („low2bal1“). - 5.2. Konvergenz. - 5.3. Langzeitstabilität und Erhaltungseigenschaften. - 6. Atmosphärische Testfälle. - 6.1. Aufsteigende warme Blase. - 6.2. Schwerewellen. - 6.3. Bergüberströmung. - 6.4. Barotrope Instabilität. - 7. Atmosphärische Instabilitäten in mittleren Breiten. - 7.1. Barotrope Instabilität mit Euler-Gleichungen in 2D und 3D. - 7.1.1. Wavelet-Spektrum. - 7.2. Barokline Instabilität in Abhängigkeit von statischer Stabilität und thermischem Wind. - 7.2.1. Einfluss der statischen Stabilität. - 7.2.2. Einfluss der vertikalen Diskretisierung. - 7.3. Entstehung zyklonaler Wirbel aus baroklin instabilem Grundstrom. - 7.3.1. Konfiguration. - 7.3.2. Entwicklung von Impulsdifferenz. - 7.3.3. Vorticity im Horizontalschnitt. - 7.3.4. Globale Charakterisierung . - 7.4. Langzeitentwicklung aus baroklinen Zuständen. - 7.4.1. Konfiguration. - 7.4.2. Entwicklung von Impulsdifferenz und Energie. - 7.4.3. Vorticity im Horizontalschnitt. - 7.4.4 Globale Charakterisierung. - 7.4.5. Wavelet-Spektrum. - 7.4.6. Zonales Mittel. - 8. Zusammenfassung und Ausblick. - A. Mathematische Aspekte. - A.1. Profilfunktionen. - A.2. Differenzen und Normen. - A.3. Wavelet-Analyse. - A.4. Darstellung aus der Diskretisierung. - A.5. Erhaltungseigenschaften mit Quadratur. - B. Details zu Euler-Gleichungen. - B.1. Vertikale Linearisierung der Euler-Gleichungen für Präkonditionierer des semi-impliziten Zeitschrittes. - B.1.1. Vertikales lineares Gleichungssystem. - B.1.2. Diskretisierung und Matrizen. - B.1.3. Implizites Gleichungssystem. - B.2. Zustände im hydrostatischen Gleichgewicht. - B.2.1. Isotherm. - B.2.2. Polytrop. - B.2.3. Isentrop. - B.2.4. Mehrfach polytrop. - B.2.5. Uniform geschichtet. - B.3. Barokliner Zustand imp-System. - C. Zusätzliche Simulationsdaten. - C.1. Stabilitätskarten zu baroklinen Langzeitsimulationen. - C.2. Wirbelentstehung nahe Oberrand. - C.3. Zusätzliche Horizontalschnitte des baroklinen Langzeitlaufes. - D. Implementierung: Programmpaket Polyflux. - E. Korrekturen zur Veröffentlichung. - Mathematische Definitionen. - Abkürzungen und Begriffe. - Literatur.
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  • 10
    Call number: AWI S6-21-94459
    Type of Medium: Monograph available for loan
    Pages: 42 Seiten , Illustrationen
    Edition: Stand: März 2014
    Language: German
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  • 11
    Call number: 9781630810504 (e-book)
    Type of Medium: 12
    Pages: 1 Online-Ressource (1.014 Seiten) , Illustrationen
    ISBN: 9781630810504 (e-book)
    Language: English
    Note: CONTENTS Preface Photo Credits Computer Codes 1 Introduction 1-1 Why Microwaves for Remote Sensing? 1-2 A Brief Overview of Microwave Sensors 1-3 A Short History of Microwave Remote Sensing 1-3.1 Radar 1-3.2 Radiometers 1-4 The Electromagnetic Spectrum 1-5 Basic Operation and Applications of Radar 1-5.1 Operation of Remote-Sensing Radars 1-5.2 Applications of Remote-Sensing Radars 1-6 Basic Operation and Applications of Radiometers 1-6.1 Radiometer Operation 1-6.2 Applications of Microwave Radiometry 1-7 Image Examples 2 Electromagnetic Wave Propagation 2-1 EM Plane Waves 2-1.1 Constitutive Parameters 2-1.2 Maxwell's Equations 2-1.3 Complex Permittivity 2-1.4 Wave Equations 2-2 Plane-Wave Propagation in Lossless Media 2-2.1 Uniform Plane Waves 2-2.2 General Relation between E and H 2-3 Wave Polarization in a Lossless Medium 2-3.1 Linear Polarization 2-3.2 Circular Polarization 2-3.3 Elliptical Polarization 2-4 Plane Wave Propagation in Lossy Media 2-4.1 Low Loss Dielectric 2-4.2 Good Conductor 2-5 Electromagnetic Power Density 2-5.1 Plane Wave in a Lossless Medium 2-5.2 Plane Wave in a Lossy Medium 2-5.3 Decibel Scale tor Power Ratios 2-6 Wave Reflection and Transmission at Normal Incidence 2-6.1 Boundary between Lossless Media 2-6.2 Boundary between Lossy Media 2-7 Wave Reflection and Transmission at Oblique Incidence 2-7.1 Horizontal Polarization—Lossless Media 2-7.2 Vertical Polarization 2-8 Reflectivity and Transmissivity 2-9 Oblique Incidence onto a Lossy Medium 2- 10 Oblique Incidence onto a Two-Layer Composite 2-10.1 Input Parameters 2-10.2 Propagation Matrix Method 2-10.3 Multiple Reflection Method 3 Remote-Sensing Antennas 3-1 The Hertzian Dipole 3-2 Antenna Radiation Characteristics 3-2.1 Antenna Pattern 3-2.2 Beam Dimensions 3-2.3 Antenna Directivity 3-2.4 Antenna Gain 3-2.5 Radiation Efficiency 3-2.6 Effective Area of a Receiving Antenna 3-3 Friis Transmission Formula 3-4 Radiation by Large-Aperture Antennas 3-5 Rectangular Aperture with Uniform Field Distribution 3-5.1 Antenna Pattern in x-y Plane 3-5.2 Beamwidth 3-5.3 Directivity and Effective Area 3-6 Circular Aperture with Uniform Field Illumination 3-7 Nonuniform-Amplitude Illumination 3-8 Beam Efficiency 3-9 Antenna Arrays 3-10 N-Element Array with Uniform Phase Distribution 3-10.1 Uniform Amplitude Distribution 3-10.2 Grating Lobes 3-10.3 Binomial Distribution 3-11 Electronic Scanning of Arrays 3-12 Antenna Types 3-12.1 Horn Antennas 3-12.2 Slot Antennas 3-12.3 Microstrip Antennas 3-13 Active Antennas 3-13.1 Advantages of Active Antennas 3-13.2 Digital Beamforming with Active Antennas 4 Microwave Dielectric Properties of Natural Earth Materials 4-1 Pure-Water Single-Debye Dielectric Model (f 〈 50 GHz) 4-2 Saline-Water Double-Debye Dielectric Model (f〈 1000 GHz) 4-3 Dielectric Constant of Pure Ice 4-4 Dielectric Mixing Models for Heterogeneous Materials 4-4.1 Randomly Oriented Ellipsoidal Inclusions 4-4.2 Polder-van Santen/de Loor Formulas 4-4.3 Tinga-Voss-Blossey (TVB) Formulas 4-4.4 Other Dielectric Mixing Formulas 4-5 Sea Ice 4-5.1 Dielectric Constant of Brine 4-5.2 Brine Volume Fraction 4-5.3 Dielectric Properties 4-6 Dielectric Constant of Snow 4-6.1 Dry Snow 4-6.2 Wet Snow 4-7 Dielectric Constant of Dry Rocks 4-7.1 Powdered Rocks 4-7.2 Solid Rocks 4-8 Dielectric Constant of Soils 4-8.1 Dry Soil 4-8.2 Wet Soil 4-8.3 εsoil in 0.3-1.5 GHz Band 4-9 Dielectric Constant of Vegetation 4-9.1 Dielectric Constant of Canopy Constituents 4-9.2 Dielectric Model 5 Radar Scattering 5-1 Wave Polarization in a Spherical Coordinate System 5-2 Scattering Coordinate Systems 5-2.1 Forward Scattering Alignment (FSA) Convention 5-2.2 Backscatter Alignment (BSA) Convention 5-3 Scattering Matrix 5-3.1 FSA Convention 5-3.2 BSA Convention 5-3.3 Stokes Parameters and Mueller Matrix 5-4 Radar Equation 5-5 Scattering from Distributed Targets 5-5.1 Narrow-Beam Scatterometer 5-5.2 Imaging Radar 5-5.3 Specific Intensities for Distributed Target 5-6 RCS Statistics 5-7 Rayleigh Fading Model 5-7.1 Underlying Assumptions 5-7.2 Linear Detection 5-7.3 Square-Law Detection 5-7.4 Interpretation 5-8 Multiple Independent Samples 5-8.1 N-Look Amplitude Image 5-8.2 N-Look Intensity Image 5-8.3 N-Look Square-Root Intensity Image 5-8.4 Spatial Resolution vs. Radiometric Resolution 5-8.5 Applicability of the Rayleigh Fading Model 5-9 Image Texture and Despeckle Filtering . 5-9.1 Image Texture 5-9.2 Despeckling Filters 5-10 Coherent and Noncoherent Scattering 5-10.1 Surface Roughness 5-10.2 Bistatic Scattering 5-10.3 Specular Reflectivity 5-10.4 Bistatic-Scattering Coefficient 5-10.5 Backscattering Response of a Smooth Surface 5-11 Polarization Synthesis 5-11.1 RCS Polarization Response 5-11.2 Distributed Targets 5-11.3 Mueller Matrix Approach 5-12 Polarimetric Scattering Statistics 5-13 Polarimetric Analysis Tools 5-13.1 Scattering Covariance Matrix 5-13.2 Eigenvector Decomposition 5-13.3 Useful Polarimetric Parameters 5-13.4 Image Examples 5-13.5 Freeman-Durden Decomposition 6 Microwave Radiometry and Radiative Transfer 6-1 Radiometric Quantities 6-2 Thermal Radiation 6-2.1 Quantum Theory of Radiation 6-2.2 Planck's Blackbody Radiation Law 6-2.3 The Rayleigh-Jeans Law 6-3 Power-Temperature Correspondence 6-4 Radiation by Natural Materials 6-4.1 Brightness Temperature 6-4.2 Brightness Temperature Distribution 6-4.3 Antenna Temperature 6-5 Antenna Efficiency Considerations 6-5.1 Beam Efficiency 6-5.2 Radiation Efficiency 6-5.3 Radiometer Measurement Ambiguity 6-6 Theory of Radiative Transfer 6-6.1 Equation of Radiative Transfer 6-6.2 Brightness-Temperature Equation 6-6.3 Brightness Temperature of a Stratified Medium 6-6.4 Brightness Temperature of a Scatter-Free Medium 6-6.5 Upwelling and Downwelling Atmospheric Brightness Temperatures 6-7 Terrain Brightness Temperature 6-7.1 Brightness Transmission Across a Specular Boundary 6-7.2 Emission by a Specular Surface 6-7.3 Emissivity of a Rough Surface 6-7.4 Extreme Surface Conditions 6-7.5 Emissivity of a Two-Layer Composite 6-8 Downward-Looking Satellite Radiometer 6-9 Polarimetric Radiometry 6-10 Stokes Parameters and Periodic Structures 7 Microwave Radiometric Systems 7-1 Equivalent Noise Temperature 7-2 Characterization of Noise 7-2.1 Noise Figure 7-2.2 Equivalent Input Noise Temperature 7-2.3 Noise Temperature of a Cascaded System 7-2.4 Noise Temperature of a Lossy Two-Port Device 7-3 Receiver and System Noise Temperatures 7-3.1 Receiver Alone 7-3.2 Total System Including Antenna 7-4 Radiometer Operation 7-4.1 Measurement Accuracy 7-4.2 Total-Power Radiometer 7-4.3 Radiometric Resolution 7-5 Effects of Receiver Gain Variations 7-6 Dicke Radiometer 7-7 Balancing Techniques 7-7.1 Reference-Channel Control Method 7-7.2 Antenna-Channel Noise-Injection Method 7-7.3 Pulsed Noise-Injection Method 7-7.4 Gain-Modulation Method 7-8 Automatic-Gain-Control (AGC) Techniques 7-9 Noise-Adding Radiometer 7-10 Summary of Radiometer Properties 7-11 Radiometer Calibration Techniques 7-11.1 Receiver Calibration 7-11.2 Calibration Sources 7-11.3 Effects of Impedance Mismatches 7-11.4 Antenna Calibration 7-11.5 Cryoload Technique 7-11.6 Bucket Technique 7-12 Imaging Considerations 7-12.1 Scanning Configurations 7-12.2 Radiometer Uncertainty Principle 7-13 Interferometric Aperture Synthesis 7-13.1 Image Reconstruction 7-13.2 MIR Radiometric Sensitivity 7-14 Polarimetric Radiometer 7-14.1 Coherent Detection 7-14.2 Incoherent Detection 7-15 Calibration of Polarimetric Radiometers 7-15.1 Forward Model for a Fully Polarimetric Radiometer 7-15.2 Forward Model for the Polarimetric Calibration Source 7-15.3 Calibration by Inversion of the Forward Models 7-16 Digital Radiometers 8 Microwave Interaction with Atmospheric Constituents 8-1 Standard Atmosphere 8-1.1 Atmospheric Composition 8-1.2 Temperature Profile 8-1.3 Density Profile 8-1.4 Pressure Profi
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  • 12
    Call number: AWI Bio-20-93993
    Type of Medium: Dissertations
    Pages: III, 127 Seiten , Illustrationen
    Language: English
    Note: Dissertation, Universität Potsdam, 2014 , Table of contents I - Abstract II - Zusammenfassung Chapter 1 - Introduction 1.1. Introduction 1.1.1 Motivation 1.1.2 Organisation of thesis 1.1 Scientific background 1.2.1 Arctic and wetland bryophytes 1.2.2 Bryophyte remains as palaeo-environmental indicators 1.2.3 Regional setting 1.3 Objectives ofthe thesis 1.4 Overview of the manuscripts 1.5 Contribution of the authors Chapter 2 - Manuscript #1 Abstract 2.1 Introduction 2.2 Geographic setting 2.3 Materials and methods 2.3.1 Fieldwork 2.3.2 Radiocarbon dating 2.3.3 Geochemical, stable carbon isotope, and granulometric analyses 2.3.4 Analyses of moss remains and vascular plant macrofossils 2.3.5 Pollen analysis 2.3.6 Diatom analysis 2.3.7 Statistical analysis 2.4 Results 2.4.1 High-resolution spatial characteristics oft the investigated polygon and vegetation pattern 2.4.2 Geochronology and age-depth relationships 2.4.3 General properties of the sedimentary fill 2.4.4 Bioindicators 2.4.5 Characterization oftwo different types of polygon pond sediment 2.5. Discussion 2.5.1 Small-scale spatial structure of polygons 2.5.2 Age-depth relationships 2.5.3 Proxy value of the analysed parameters 2.5.4 The general polygon development 2.5.5 Polygon development as a function of external controls and internal adjustment mechanisms 2.6 Conclusions Chapter 3 - Manuscript #11 Abstract 3.1 Introduction 3.2 Material und methods 3.2.1 Regional setting 3.2.3 Field methods and environmental data collection 3.2.4 Data analysis 3.3 Results 3.3.1 Major characteristics of the investigated polygons 3.3.2 Vegetation cover and its relationships with micro-relief and vegetation type 3.3.3 Vegetation alpha-diversity and its relationship with micro-relief and vegetation type 3.3.4 Vegetation composition and its relationship with micro-relief and vegetation type 3.4 Discussion 3.4.1 Patterns of cover, alpha-diversity and compositional turnover of vascular plants and bryophytes along the rim-pond transect (local-scale) 3.4.2 Patterns of cover, alpha-diversity and compositional turnover of vascular plants and bryophytes along the regional-scale forest-tundra transect 3.4.3 Indicator potential ofvascular plant and bryophyte remains from polygonal peats for the reconstruction of local hydrological and regional vegetation changes 3.4.4. Implications of the performed vegetation transect studies for future Arctic warming 3.5 Acknowledgements 2.4.4 Bioindicators 2.4.5 Characterization of two different types of polygon pond sediment 2.5. Discussion 2.5.1 Small-scale spatial structure of polygons 2.5.2 Age-depth relationships 2.5.3 Proxy value of the analysed parameters 2.5.4 The general polygon development 2.5.5 Polygon development as a function of external controls and internal adjustment mechanisms 2.6 Conclusions Chapter 3 - Manuscript #II Abstract 3.1 Introduction 3.2 Material und methods 3.2.1 Regional setting 3.2.3 Field methods and environmental data collection 3.2.4 Data analysis 3.3 Results 3.3.1 Major characteristics of the investigated polygons 3.3.2 Vegetation cover and its relationships with micro-relief and vegetation type 3.3.3 Vegetation alpha-diversity and its relationship with micro-relief and vegetation type 3.3.4 Vegetation composition and its relationship with micro-relief and vegetation type 3.4 Discussion 3.4.1 Patterns of cover, alpha-diversity and compositional turnover of vascular plants and bryophytes along the rim-pond transect (local-scale) 3.4.2 Patterns of cover, alpha-diversity and compositional turnover of vascular plants and bryophytes along the regional-scale forest-tundra transect 3.4.3 Indicator potential of vascular plant and bryophyte remains from polygonal peats for the reconstruction of local hydrological and regional vegetation changes 3.4.4. Implications of the performed vegetation transect studies for future Arctic warming 3.5 Acknowledgements Chapter 4 - Manuscript #3 Abstract 4.1 Introduction 4.2 Material and methods 4.2.1 Sites 4.2.2 Sampling 4.2.3 Investigated moss species 4.2.4 Measurements 4.2.5 Statistical Tests 4.3 Results 4.4 Discussion Chapter 5 - Discussion 5.1 Bryophytes of polygonal landscapes in Siberia 5.1.1 Modern bryophytes in the Siberian Arctic 5.1.2 Biochemical and isotopic characteristics of mosses 5.1.3 Reliability and potential of fossil bryophyte remains as palaeoproxies 5.2 Dynamics of low-centred polygons during the late Holocene 5.3 Outlook Appendix I - Preliminary Report Motivation Material and methods Results and first interpretation Appendix II Additional tables and figures of manuscript #1 Appendix III Additional figures of manuscript #2 Appendix IV - Quantitative approach of Standard Moss Stem (SMS3) Bibliography Acknowledgements Eidesstattliche Erklärung
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  • 13
    Monograph available for loan
    Monograph available for loan
    New York, NY : Cambridge Univ. Press
    Call number: AWI A11-15-89031
    Description / Table of Contents: Thermodynamics, Kinetics and Microphysics of Clouds presents a unified theoretical foundation that provides the basis for incorporating cloud microphysical processes in cloud and climate models. In particular, the book provides: • a theoretical basis for understanding the processes of cloud particle formation, evolution and precipitation, with emphasis on spectral cloud microphysics based on numerical and analytical solutions of the kinetic equations for the drop and crystal size spectra along with the supersaturation equation; • the latest detailed theories and parameterizations of drop and crystal nucleation suitable for cloud and climate models derived from the general principles of thermodynamics and kinetics; • a platform for advanced parameterization of clouds in weather prediction and climate models; • the scientific foundation for weather and climate modification by cloud seeding. This book will be invaluable for researchers and advanced students engaged in cloud and aerosol physics, and air pollution and climate research.
    Type of Medium: Monograph available for loan
    Pages: XVIII, 782 S. : graph. Darst., Kt.
    ISBN: 978-1-107-01603-3
    Language: English
    Note: Contents: Preface. - 1. Introduction. - 1.1. Relations among Thermodynamics, Kinetics, and Cloud Microphysics. - 1.2. The Correspondence Principle. - 1.3. Structure of the Book. - 2. Clouds and Their Properties. - 2.1. Cloud Classification. - 2.2. Cloud Regimes and Global Cloud Distribution. - 2.2.1. Large-Scale Condensation in Fronts and Cyclones. - 2.2.2. Sc-St Clouds and Types of Cloud-Topped Boundary Layer. - 2.2.3. Convective Cloudiness in the Intertropical Convergence Zone. - 2.2.4. Orographic Cloudiness. - 2.3. Cloud Microphysical Properties. - 2.4. Size Spectra and Moments. - 2.4.1. Inverse Power Laws. - 2.4.2. Lognormal Distributions. - 2.4.3. Algebraic Distributions. - 2.4.4. Gamma Distributions. - 2.5. Cloud Optical Properties. - Appendix A.2. Evaluation of the Integrals with Lognormal Distribution. - 3. Thermodynamic Relations. - 3.1. Thermodynamic Potentials. - 3.2. Statistical Energy Distributions. - 3.2.1. The Gibbs Distribution. - 3.2.2. The Maxwell Distribution. - 3.2.3. The Boltzmann Distribution. - 3.2.4. Bose–Einstein Statistics. - 3.2.5. Fermi–Dirac Statistics. - 3.3. Phase Rules. - 3.3.1. Bulk Phases. - 3.3.2. Systems with Curved Interfaces. - 3.4. Free Energy and Equations of State. - 3.4.1. An Ideal Gas. - 3.4.2. Free Energy and the van der Waals Equation of State for a Non-Ideal Gas. - 3.5. Thermodynamics of Solutions. - 3.6. General Phase Equilibrium Equation for Solutions. - 3.6.1. General Equilibrium Equation. - 3.6.2. The Gibbs–Duhem Relation. - 3.7. The Clausius–Clapeyron Equation. - 3.7.1. Equilibrium between Liquid and Ice Bulk Phases. - 3.7.2. Equilibrium of a Pure Water Drop with Saturated Vapor. - 3.7.3. Equilibrium of an Ice Crystal with Saturated Vapor. - 3.7.4. Humidity Variables. - 3.8. Phase Equilibrium for a Curved Interface - The Kelvin Equation. - 3.9. Solution Effects and the Köhler Equation. - 3.10. Thermodynamic Properties of Gas Mixtures and Solutions. - 3.10.1. Partial Gas Pressures in a Mixture of Gases. - 3.10.2. Equilibrium of Two Bulk Phases around a Phase Transition Point. - 3.10.3. Raoult’s Law for Solutions. - 3.10.4. Freezing Point Depression and Boiling Point Elevation. - 3.10.5. Relation of Water Activity and Freezing Point Depression. - 3.11. A diabatic Processes. - 3.11.1. Dry Adiabatic Processes. - 3.11.2. Wet Adiabatic Processes. - Appendix A.3. Calculation of Integrals with the Maxwell Distribution. - 4. Properties of Water and Aqueous Solutions. - 4.1. Properties of Water at Low Temperatures and High Pressures. - 4.1.1. Forms of Water at Low Temperatures. - 4.1.2. Forms of Water at High Pressures. - 4.2. Theories of Water. - 4.3. Temperature Ranges in Clouds and Equivalence of Pressure and Solution Effects. - 4.4. Parameterizations of Water and Ice Thermodynamic Properties. - 4.4.1. Saturated Vapor Pressures. - 4.4.2. Heat Capacity of Water and Ice. - 4.4.3. Latent Heats of Phase Transitions. - 4.4.4. Surface Tension between Water and Air or Vapor. - 4.4.5. Surface Tension between Ice and Water or Solutions. - 4.4.6. Surface Tension between Ice and Air or Vapor. - 4.4.7 Density of Water. - 4.4.8. Density of Ice. - 4.5. Heat Capacity and Einstein-Debye Thermodynamic Equations of State for Ice. - 4.6. Equations of State for Ice in Terms of Gibbs Free Energy. - 4.7. Generalized Equations of State for Fluid Water. - 4.7.1. Equations of the van der Waals Type and in Terms of Helmholtz Free Energy. - 4.7.2. Equations of State Based on the Concept of the Second Critical Point. - Appendix A.4. Relations among Various Pressure Units. - 5. Diffusion and Coagulation Growth of Drops and Crystals. - 5.1. Diffusional Growth of Individual Drops. - 5.1.1. Diffusional Growth Regime. - 5.1.2. The Kinetic Regime and Kinetic Corrections to the Growth Rate. - 5.1.3. Psychrometric Correction Due to Latent Heat Release. - 5.1.4. Radius Growth Rate. - 5.1.5. Ventilation Corrections. - 5.2. Diffusional Growth of Crystals. - 5.2.1. Mass Growth Rates. - 5.2.2. Axial Growth Rates. - 5.2.3. Ventilation Corrections. - 5.3. Equations for Water and Ice Supersaturations. - 5.3.1. General Form of Equations for Fractional Water Supersaturation. - 5.3.2. Supersaturation Relaxation Times and Their Limits. - 5.3.3. E quation for Water Supersaturation in Terms of Relaxation Times. - 5.3.4. Equivalence of Various Forms of Supersaturation Equations. - 5.3.5. Equation for Fractional Ice Supersaturation. - 5.3.6. Equilibrium Supersaturations over Water and Ice. - Liquid Clouds. - Ice Clouds. - Mixed Phase Clouds. - 5.3.7. A diabatic Lapse Rates with Non zero Supersaturations. - 5.4. The Wegener–Bergeron–Findeisen Process and Cloud Crystallization. - 5.5. Kinetic Equations of Condensation and Deposition in the Adiabatic Process. - 5.5.1. Derivation of the Kinetic Equations. - 5.5.2. Some Properties of Regular Condensation. - 5.5.3. Analytical Solution of the Kinetic Equations of Regular Condensation. - 5.5.4. Equation for the Integral Supersaturation. - 5.6. Kinetic Equations of Coagulation. - 5.6.1. Various Forms of the Coagulation Equation. - 5.6.2. Collection Kernels for Various Coagulation Processes. - Brownian Coagulation. - Gravitational Coagulation. - 5.7. Thermodynamic and Kinetic Equations for Multidimensional Models. - 5.8. Fast Algorithms for Microphysics Modules in Multidimensional Models. - 6. Wet Aerosol Processes. - 6.1. Introduction. - 6.1.1. Empirical Parameterizations of Hygroscopic Growth. - 6.1.2. Empirical Parameterizations of Droplet Activation. - 6.2. Equilibrium Radii. - 6.2.1. Equilibrium Radii at Subsaturation. - 6.2.2. Equilibrium Radii of Interstitial Aerosol in a Cloud. - 6.3. Critical Radius and Supersaturation. - 6.4. Aerosol Size Spectra. - 6.4.1. Lognormal and Inverse Power Law Size Spectra. - 6.4.2. Approximation of the Lognormal Size Spectra by the Inverse Power Law. - 6.4.3. Examples of the Lognormal Size Spectra, Inverse Power Law, and Power Indices. - 6.4.4. Algebraic Approximation of the Lognormal Distribution. - 6.5. Transformation of the Size Spectra of Wet Aerosol at Varying Humidity. - 6.5.1. Arbitrary Initial Spectrum of Dry Aerosol. - 6.5.2. Lognormal Initial Spectrum of Dry Aerosol. - 6.5.3. Inverse Power Law Spectrum. - 6.5.4. Algebraic Size Spectra. - 6.6. CCN Differential Supersaturation Activity Spectrum. - 6.6.1. A rbitrary Dry Aerosol Size Spectrum. - 6.6.2. Lognormal Activity Spectrum. - 6.6.3. Algebraic Activity Spectrum. - 6.7. Droplet Concentration and the Modified Power Law for Drops Activation. - 6.7.1. Lognormal and Algebraic CCN Spectra. - 6.7.2. Modified Power Law for the Drop Concentration. - 6.7.3. Supersaturation Dependence of Power Law Parameters. - Appendix A.6. Solutions of Cubic Equations for Equilibrium and Critical Radii. - 7. Activation of Cloud Condensation Nuclei into Cloud Drops. - 7.1. Introduction. - 7.2. Integral Supersaturation in Liquid Clouds with Drop Activation. - 7.3. Analytical Solutions to the Supersaturation Equation. - 7.4. Analytical Solutions for the Activation Time, Maximum Supersaturation, and Drop Concentration. - 7.5. Calculations of CCN Activation Kinetics. - 7.6. Four Analytical Limits of Solution. - 7.7. Limit #1: Small Vertical Velocity, Diffusional Growth Regime. - 7.7.1. Lower Bound. - 7.7.2. Upper Bound. - 7.7.3. Comparison with Twomey’s Power Law. - 7.8. Limit #2: Small Vertical Velocity, Kinetic Growth Regime. - 7.8.1. Lower Bound. - 7.8.2. Upper Bound. - 7.9. Limit #3: Large Vertical Velocity, Diffusional Growth Regime. - 7.9.1. Lower Bound. - 7.9.2. Upper Bound. - 7.10. Limit #4: Large Vertical Velocity, Kinetic Growth Regime. - 7.10.1. Lower Bound. - 7.10.2. Upper Bound. - 7.11. Interpolation Equations and Comparison with Exact Solutions. - Appendix A.7. Evaluation of the Integrals J2 and J3 for Four Limiting Cases. - 8. Homogeneous Nucleation. - 8.1. Metastable States and Nucleation of a New Phase. - 8.2. Nucleation Rates for Condensation and Deposition. - 8.2.1. Application of Boltzmann Statistics. - 8.2.2. The Fokker–Planck
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  • 14
    Monograph available for loan
    Monograph available for loan
    Cambridge [u.a.] : Cambridge Univ. Press
    Call number: AWI S2-14-0042 ; M 15.0198
    Description / Table of Contents: This revised and updated edition focuses on constrained ordination (RDA, CCA), variation partitioning and the use of permutation tests of statistical hypotheses about multivariate data. Both classification and modern regression methods (GLM, GAM, loess) are reviewes and species functional traits and spatial structures are analysed. Nine case studies of varying difficulty help to illustrate the suggestes analytical methods, using the latest version of Canoco 5. All studies utilise descriptive and manipulative approaches, and are supported by data sets and project files available from the book website: http://regent.prf.jcu.cz/maed2/. Written primarily for community ecologists needing to analyse data resulting from field observations and experiments, this book is a valuable resource for students and researchers dealing with both simple and complex ecological problems, such as the variation of biotic communities with environmental conditions or their response to experimental manipulation.
    Type of Medium: Monograph available for loan
    Pages: XII, 362 S. : Ill., graph. Darst.
    Edition: 2. ed.
    ISBN: 9781107694408 , 1-107-69440-X
    Language: English
    Note: Contents: Preface. - 1 Introduction and datatypes. - 1.1 Why ordination?. - 1.2 Datatypes. - 1.3 Data transformation and standardisation. - 1.4 Missing values. - 1.5 Types of analyses. - 2 Using Canoco 5. - 2.1 Philosophy of Canoco 5. - 2.2 Data import and editing. - 2.3 Defining analyses. - 2.4 Visualising results. - 2.5 Beware, CANOCO 4.x users!. - 3 Experimental design. - 3.1 Completely randomised design. - 3.2 Randomised complete blocks. - 3.3 Latin square design. - 3.4 Pseudo replicates. - 3.5 Combining more than one factor. - 3.6 Following the development of objects in time: repeated observations. - 3.7 Experimental and observational data. - 4 Basics of gradient analysis. - 4.1 Techniques of gradient analysis. - 4.2 Models of response to gradients. - 4.3 Estimating species optima by weighted averaging. - 4.4 Calibration. - 4.5 Unconstrained ordination. - 4.6 Constrained ordination. - 4.7 Basic ordination techniques. - 4.8 Ordination axes as optimal predictors. - 4.9 Ordination diagrams. - 4.10 Two approaches. - 4.11 Testing significance of the relation with explanatory variables. - 4.12 Monte Carlo permutation tests for the significance of regression. - 4.13 Relating two biotic communities. - 4.14 Community composition as a cause: using reverse analysis. - 5.1 Permutation tests: the philosophy. - 5.2 Pseudo-F statistics and significance. - 5.3 Testing individual constrained axes. - 5.4 Tests with spatial or temporal constraints. - 5.5 Tests with hierarchical constraints. - 5.6 Simple versus conditional effects and stepwises election. - 5.7 Variation partitioning. - 5.8 Significance adjustment for multiple tests. - 6 Similarity measures and distance-based methods. - 6.1 Similarity measures for presence-absence data. - 6.2 Similarity measures for quantitative data. - 6.3 Similarity of cases versus similarity of communities. - 6.4 Similarity between species in trait values. - 6.5 Principal coordinates analysis. - 6.6 Constrained principal coordinates analysis (db-RDA). - 6.7 Non-metric multidimensional scaling. - 6.8 Mantel test. - 7.1 Example data set properties. - 7.2 Non-hierarchical classification (K-means clustering). - 7.3 Hierarchical classification. - 7.4 TWINSPAN. - 8 Regression methods. - 8.1 Regression models in general. - 8.2 General linear model: terms. - 8.3 Generalized linear models (GLM). - 8.4 Loess smoother. - 8.5 Generalized additive models (GAM). - 8.6 Mixed-effect models (LMM, GLMM and GAMM). - 8.7 Classification and regression trees (CART). - 8.8 Modelling species response curves with Canoco. - 9 Interpreting community composition with functional traits. - 9.1 Required data. - 9.2 Two approaches in traits - environment studies. - 9.3 Community-based approach. - 9.4 Species-based approach. - 10 Advanced use of ordination. - 10.1 Principal response curves (PRC). - 10.2 Separating spatial variation. - 10.3 Linear discriminant analysis. - 10.4 Hierarchical analysis of community variation. - 10.5 Partitioning diversity indices into alpha and beta components. - 10.6 Predicting community composition. - 11 Visualising multivariate data. - 11.1 Reading ordination diagrams of linear methods. - 11.2 Reading ordination diagrams of unimodal methods. - 11.3 Attribute plots. - 11.4 Visualising classification, groups, and sequences. - 11.5 T-value biplot. - 12 Case study 1: Variation in forest bird assemblages. - 12.1 Unconstrained ordination: portraying variation in bird community. - 12.2 Simple constrained ordination: the effect of altitude on bird community. - 12.3 Partial constrained ordination: additional effect of other habitat characteristics. - 12.4 Separating and testing alpha and beta diversity. - 13 Case study 2: Search for community composition patterns and their environmental correlates: vegetation of spring meadows. - 13.1 Unconstrained ordination. - 13.2 Constrained ordination. - 13.3 Classification. - 13.4 Suggestions for additional analyses. - 13.5 Comparing two communities. - 14 Case study 3: Separating the effects of explanatory variables. - 14.1 Introduction. - 14.2 Data. - 14.3 Changes in species richness and composition. - 14.4 Changes in species traits. - 15 Case study 4: Evaluation of experiments in randomised complete blocks. - 15.1 Introduction. - 15.2 Data. - 15.3 Analysis. - 15.4 Calculating ANOVA using constrained ordination. - 16 Case study 5: Analysis of repeated observations of species composition from a factorial experiment. - 16.1 Introduction. - 16.2 Experimental design. - 16.3 Data coding and use. - 16.4 Univariate analyses. - 16.5 Constrained ordinations. - 16.6 Principal response curves. - 16.7 Temporal changes across treatments. - 16.8 Changes in composition of functional traits. - 17 Case study 6: Hierarchical analysis of crayfish community variation. - 17.1 Data and design. - 17.2 Differences among sampling locations. - 17.3 Hierarchical decomposition of community variation. - 18 Case study 7: Analysis of taxonomic data with discriminant analysis and distance-based ordination. - 18.1 Data. - 18.2 Summarising morphological data with PCA. - 18.3 Linear discriminant analysis of morphological data. - 18.4 Principal coordinates analysis of AFLP data. - 18.5 Testing taxon differences in AFLP data using db-RDA. - 18.6 Taking populations into account. - 19 Case study 8: Separating effects of space and environment on oribatid community with PCNM. - 19.1 Ignoring the space. - 19.2 Detecting spatial trends. - 19.3 All-scale spatial variation of community and environment. - 19.4 Variation partitioning with spatial predictors. - 19.5 Visualising spatial variation. - 20 Case study 9: Performing linear regression with redundancy analysis. - 20.1 Data. - 20.2 Linear regression using program R. - 20.3 Linear regression with redundancy analysis. - 20.4 Fitting generalized linear models in Canoco. - Appendix A Glossary. - Appendix B Sample data sets and projects. - Appendix C Access to Canoco and overview of other software. - Appendix D Working with R. - References. - Index to useful tasks in Canoco 5. - Subject index.
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  • 15
    Monograph available for loan
    Monograph available for loan
    Washington : National Academies Press
    Call number: AWI P5-14-0057
    Description / Table of Contents: Once ice-bound, difficult to access, and largely ignored by the rest of the world, the Arctic is now front and center in the midst of many important questions facing the world today. Our daily weather, what we eat, and coastal flooding are all interconnected with the future of the Arctic. The year 2012 was an astounding year for Arctic change. The summer sea ice volume smashed previous records, losing approximately 75 percent of its value since 1980 and half of its areal coverage. Multiple records were also broken when 97 percent of Greenland's surface experienced melt conditions in 2012, the largest melt extent in the satellite era. Receding ice caps in Arctic Canada are now exposing land surfaces that have been continuously ice covered for more than 40,000 years. What happens in the Arctic has far-reaching implications around the world. Loss of snow and ice exacerbates climate change and is the largest contributor to expected global sea level rise during the next century. Ten percent of the world's fish catches comes from Arctic and sub-Arctic waters. The U.S. Geological Survey estimated that up to 13 percent of the world's remaining oil reserves are in the Arctic. The geologic history of the Arctic may hold vital clues about massive volcanic eruptions and the consequent release of massive amount of coal fly ash that is thought to have caused mass extinctions in the distant past. How will these changes affect the rest of Earth? What research should we invest in to best understand this previously hidden land, manage impacts of change on Arctic communities, and cooperate with researchers from other nations? The Arctic in the Anthropocene reviews research questions previously identified by Arctic researchers, and then highlights the new questions that have emerged in the wake of and expectation of further rapid Arctic change, as well as new capabilities to address them. This report is meant to guide future directions in U.S. Arctic research so that research is targeted on critical scientific and societal questions and conducted as effectively as possible. The Arctic in the Anthropocene identifies both a disciplinary and a cross-cutting research strategy for the next 10 to 20 years, and evaluates infrastructure needs and collaboration opportunities. The climate, biology, and society in the Arctic are changing in rapid, complex, and interactive ways. Understanding the Arctic system has never been more critical; thus, Arctic research has never been more important. This report will be a resource for institutions, funders, policy makers, and students. Written in an engaging style, The Arctic in the Anthropocene paints a picture of one of the last unknown places on this planet, and communicates the excitement and importance of the discoveries and challenges that lie ahead.
    Type of Medium: Monograph available for loan
    Pages: xiii, 210 Seiten , Illustrationen
    Edition: [Final report]
    ISBN: 9780309301831 , 0-309-30183-1
    Language: English
    Note: Contents: SUMMARY. - 1 INTRODUCTION. - Study Context and Charge to the Committee. - Study Approach and Methodology. - Report Organization. - 2 RATIONALE FOR CONTINUED ARCTIC RESEARCH. - 3 EMERGING QUESTIONS. - Evolving Arctic. - Will Arctic communities have greater or lesser influence on their futures?. - Will the land be wetter or drier, and what are the associated implications for surface water, energy balances, and ecosystems?. - How much of the variability of the Arctic system is linked to ocean circulation?. - What are the impacts of extreme events in the new ice-reduced system?. - How will primary productivity change with decreasing sea ice and snow cover?. - How will species distributions and associated ecosystem structure change with the evolving cryosphere?. - Hidden Arctic. - What surprises are hidden within and beneath the ice?. - What is being irretrievably lost as the Arctic changes?. - Why does winter matter?. - What can "break or brake" glaciers and ice sheets?. - How unusual is the current Arctic warmth?. - What is the role of the Arctic in abrupt change?. - What has been the Cenozoic evolution of the Arctic Ocean Basin?. - Connected Arctic. - How will rapid Arctic warming change the jet stream and affect weather patterns in lower latitudes?. - What is the potential for a trajectory of irreversible loss of Arctic land ice, and how will its impact vary regionally?. - How will climate change affect exchanges between the Arctic Ocean andsubpolar basins?. - How will Arctic change affect the long-range transport and persistence of biota?. - How will changing societal connections between the Arctic and the rest of the world affect Arctic communities?. - Managed Arctic. - How will decreasing populations in rural villages and increasing urbanization affect Arctic peoples and societies?. - Will local, regional, and international relations in the Arctic move toward cooperation or conflict?. - How can 21st-century development in the Arctic occur without compromising the environment or indigenous cultures while still benefiting global and Arctic inhabitants?. - How can we prepare forecasts and scenarios to meet emerging management needs?. - What benefits and risks are presented by geoengineering and other large-scale technological interventions to prevent or reduce climate change and associated impacts in the Arctic?. - Undetermined Arctic. - Priority Setting. - 4 MEETING THE CHALLENGES. - Enhancing Cooperation. - Interagency. - International. - Interdisciplinary. - Intersectoral. - Cooperation through Social Media. - Sustaining Long-Term Observations. - Rationale for Long-Term Observations. - Coordinating Long-Term Observation Efforts. - Managing and Sharing Information. - Preserving the Legacy of Research through Data Preservation and Dissemination. - Creating a Culture of Data Preservation and Sharing. - Infrastructure to Ensure Data Flows from Observation to Users, Stakeholders, and Archives. - Data Visualization and Analysis. - Maintaining and Building Operational Capacity. - Mobile Platforms. - Fixed Platforms and Systems. - Remote Sensing. - Sensors. - Power and Communication. - Models in Prediction, Projection, and Re-Analyses. - Partnerships with Industry. - Growing Human Capacity. - Community Engagement. - Investing in Research. - Comprehensive Systems and Synthesis Research. - Non-Steady-State Research. - Social Sciences and Human Capacity. - Stakeholder-Initiated Research. - International Funding Cooperation. - Long-Term Observations. - 5 BUILDING KNOWLEDGE AND SOLVING PROBLEMS. - REFERENCES. - APPENDIXES. - A Acronyms and Abbreviations. - B Speaker and Interviewee Acknowledgments. - C Summary of Questionnaire Responses. - D Biographical Sketches of Committee Members.
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  • 16
    Call number: ZSP-553-18
    In: Meddelelser om Grønland
    Type of Medium: Monograph available for loan
    Pages: 24 S.
    ISBN: 8717055644
    ISSN: 0106-1046
    Series Statement: Meddelelser om Grønland : Geoscience 18
    Language: English
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  • 17
    Series available for loan
    Series available for loan
    Koebenhavn : Grønlands Geol. Undersøgelse
    Associated volumes
    Call number: ZSP-683-134
    In: Rapport = Report
    Description / Table of Contents: Table of Contents: U-Pb and Rb-Sr age determinations on Caledonian plutonic rocks in the central part of the Scoresby Sund region, East Greenland / B. T. Hansen, R. H. Steiger & N. Henriksen. - Archaean U-Pb zircon ages form the Soresby Sund region, East Greenland / K. Higgins & B. Borchardt. - Isotopic age dating in Liverpool Land, East Greenland / B. T. Hansen & J. D. Friderichsen. - Rb-Sr and K-AR Caledonian ages from the Upper Eleonore Bay Group and Cambrian metasediments of the East Greenland Caledonian fold belt / M. G. Bonhomme & R. Caby
    Type of Medium: Series available for loan
    Pages: 51 S. : graph. Darst., Kt.
    Series Statement: The Geological Survey of Greenland : Report 134
    Language: English
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  • 18
    Call number: ZSP-553-19
    In: Meddelelser om Grønland
    Type of Medium: Monograph available for loan
    Pages: 52 S. : Ill., graph. Darst
    ISBN: 8717055628
    ISSN: 0106-1046
    Series Statement: Meddelelser om Grønland : Geoscience 19
    Language: English
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  • 19
    Monograph available for loan
    Monograph available for loan
    Kingston : Antarctic Division
    Call number: AWI P3-89-0313
    Type of Medium: Monograph available for loan
    Pages: 140 Seiten , Illustrationen
    Edition: third edition
    ISBN: 0642117837
    Language: English
    Note: Contents INTRODUCTION ACKNOWLEDGMENTS 1. GOING OUT? requirements to be met, minimum equipment, field trips 2. STATIONS AND BASES Macquarie Island, Commonwealth Bay, Casey, Edgeworth David, Davis, Law, Mawson, Heard Island 3. TRAVEL IN ANTARCTICA blizzards, whiteout, revasses, sea ice hazards and emergency 4. LIGHT-WEIGHT TRAVEL IN ANTARCTICA walking, skiing, manhauling, dog sledging 5. MOTORISED TOBOGGANS operation, sledges 6. HEAVY VEHICLE TRAVEL IN ANTARCTICA planning, train methods, navigating, extracting crevassed vehicles, Hagglunds on sea ice 7. AIRCRAFT TRAVEL safety, loading, flying, ground-to-air signals, marshalling, forced landings 8. SMALL BOAT TRAVEL safety, minimum equipment, emergency action 9. CLOTHING AND FIELD EQUIPMENT wearing clothing properly, knot tying, slings, harnesses, karabiners, jumars, anchors, ice axes, crampons, packs, sleeping gear 10. SNOW AND ICE TECHNIQUES step-cutting, descending, self-arresting, roping up for climbing, belays, abseiling, roping up for glacier travel, extraction from crevasses, rescue stretcher use 10. SHELTER tent erection, Apple huts, primus, tilley lamp, emergency shelters, bivouac for a lone person 12. FIELD RATIONS packs, cooking, emergency food 13. NAVIGATION maps, magnetic compass, magnetic variation, bearings, locating south at night, locating north, vehicle compass, trail marking 14. RADIO COMMUNICATIONS VHF channels, VHF repeater, VHF hand-helds and repairs, vehicle VHF, HF frequencies, HF radios, HF antennae, EPIRBs, PIRBs, Radio Box, Selcal, callsigns, schedules, Morse, to ships and aircraft, distress and urgency calls 15. EMERGENCY PROCEDURES AND SEARCH AND RESCUE priorities, lost individual, lost party, searchmasters, SAR phases, search techniques, location by dipole aerial, radio failure on Macquarie Island 16. ENVIRONMENT PROTECTION Antarctic Treaty and acts, SPAs, SSSis, offences, Heard and McDonald Islands, Macquarie Island, Southern Ocean APPENDIX I. Field camp equipment list APPENDIX II. Distances, weights and volumes
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  • 20
    Call number: ZSP-558-24 ; MOP 46209 / Mitte
    In: Middle atmosphere program
    Type of Medium: Series available for loan
    Pages: 97 S.
    Language: English
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  • 21
    Series available for loan
    Series available for loan
    Leipzig : Deutscher Verlag für Grundstoffindustrie
    Associated volumes
    Call number: SR 99.0015(409) ; ZSP-292-409
    In: Freiberger Forschungshefte, 409
    Type of Medium: Series available for loan
    Pages: 54 Seiten , Illustrationen
    Edition: 1. Auflage
    ISBN: 3-342-00920-9
    ISSN: 0071-9409
    Series Statement: Freiberger Forschungshefte : C 409 : Geowissenschaften - Geologie
    Language: German
    Note: Inhaltsverzeichnis Annotation (Annotation, Annotacija) 1. Einführung 1.1. Politische Grundlagen 1.2. Rohstoffspekulationen 2. Grundzüge der Tektonik und Mineragenie der Antarktis 2.1. Geotektonische Epochen 2.2. Tektonisch-minerogenetische Rayonierung 3. Vorkommen fester mineralischer Rohstoffe 3.1. Metallische Rohstoffe 3.1.1. Schwarzmetalle 3.1.1.1. Eisen 3.1.1.2. Mangan 3.1.1.3. Chrom, Nickel, Kobalt, Vanadium, Titan 3.1.1.4. Molybdän, Wolfram 3.1.2. Buntmetalle 3.1.2.1. Kupfer 3.1.2.2. Blei, Zink 3.1.2.3. Zinn 3.1.3. Edelmetalle (Silber, Gold, Platin) 3.1.4. Sonstige Metalle 3.2. Nichtmetallische Rohstoffe 3.2.1. Edel- und Schmucksteine 3.2.2. Glimmer 3.2.3. Feuerfestminerale 3.2.4. Phosphat 3.2.5. Fluorit, Baryt 3.2.6. Graphit. 3.2.7. Schwefel 4. Kohlenvorkommen 5. Kohlenwasserstoff-Vorkommen 6. Geothermische Energie 7. Süßwasser(Eis)-Vorräte 8. Schlußfolgerungen 9. Danksagung . 10. Zusammenfassung (Summary, Rezjume) Literaturverzeichnis Tabellen 1 bis 8
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  • 22
    Call number: SR 99.0015(412) ; ZSP-292-412
    In: Freiberger Forschungshefte, 412
    Type of Medium: Series available for loan
    Pages: 68 Seiten , Illustrationen
    Edition: 1. Auflage
    ISBN: 3-342-00923-3
    ISSN: 0071-9409
    Series Statement: Freiberger Forschungshefte : C 412 : Geowissenschaften, Geologie
    Language: German
    Note: Beitrag zur Geologie der Hutton Mountains und der Guettard Range (Palmer Land, Antarktische Halbinsel) : Teilnahme an der 29. Sowjetischen Antarktisexpedition 1984 ; vorläufige Mitteilung / Wolfgang Weber, Karin Rank
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  • 23
    Series available for loan
    Series available for loan
    Leipzig : VEB Deutscher Verlag für Grundstoffindustrie
    Associated volumes
    Call number: SR 99.0015(418) ; ZSP-292-418
    In: Freiberger Forschungshefte, 418
    Type of Medium: Series available for loan
    Pages: 75 Seiten , Illustrationen, Diagramme, Karten
    Edition: 1. Auflage
    ISBN: 3-342-00930-6
    ISSN: 0071-9409
    Series Statement: Freiberger Forschungshefte : C 418 : Geowissenschaften - Geologie
    Language: German
    Note: Inhaltsverzeichnis Annotation (Annotation, Annotacija) 1. Einleitung 2. Tektonische Rayonierung Antarktikas 2. I. Der Ostantarktische Kraton (1) 2.1.1. Zentraler Geoblock (1.1.) 2.1.1.1. Enderby Land-Block (1.1.1) 2.1.1.2. Dronning Maud Land-Block (1.1.2) 2.1.1.3. Prince Charles Mountains-Block (1.1.3) 2. 1.2. Östlicher Geoblock (1.2) 2.1.2.1. Vestfold Block (1.2.1) 2.1.2.2. Wilkes Land-Block (1.2.2) 2. 1.2.3. Victoria Land-Block (1.2.3) 2.1.3. Westlicher Geoblock (1.3) 2.1.3.1. Maudheim-Block (1.3.1) 2.1.3.2. Shekleton Range-Block (1.3.2) 2.1.3.3. Thiel Mountains-Block (1.3.3) 2.2. Die jungproterozoisch-altpaläozoische Mobilzone der Transantarctic Mountains (2) 2.2.1. Südlicher Block (2.1) 2.2.2. Nördlicher Block (2.2) 2.2.3. Admirality Mountains-Block (2.3) 2.3. Die jungproterozoisch-paläozoische Mobilzonen der Pensacola und Ellsworth Mountains (3) 2.3.1. Pensacola Mountains-Block (3.1) 2.3.2. Ellsworth Mountains-Block (3.2) 2.4. Die paläozoisch-mesozoische Mobilzone Westantarktikas (4) 2.4.1. Marie Byrd Land-Block (4.1) 2.4.2. Thurston Island/Eights Coast-Block ( 4.2) 2.4.3. Antarctic Peninsula-Block (4.3) 2.5. Die jungen Sedimentbecken der Westantarktis (5) 2.5.1. Weddell Sea-Becken (5.1) 2.5.2. Byrd-Senke (5.2) 2.5.3. Ross Sea-Becken (5.3) 3. Minerogenetische Entwicklung Antarktikas 3. I. Archaische minerogenetische Hauptepoche ( 〉 2,6 Ga) 3.2. Proterozoische minerogenetische Hauptepoche (ca. 2,6 bisca. 0,8 Ga) 3.2.1. Unterproterozoische minerogenetische Epoche (ca. 2,6 bis ca. 2,0 Ga) 3.2.2. Mittel- bis oberproterozoische minerogenetische Epoche (ca. 2,0 bis ca. 0,8 Ga) 3.3. Spätriphäisch-phanerozoische minerogenetische Hauptepoche ( 〈0,8 Ga) 3.3.1. Spätriphäisch-altpaläozoische minerogenetische Epoche (ca. 0,8 Ga bis ca. 450 Mal 3.3.2. Paläozoisch-frühmesozoische minerogenetische Epoche (ca. 450 Ma bis ca. 150 M;l) 3.3.3. Mesozoisch-känozoische minerogenetische Epoche (ab. ca. 190 Ma) 4. Minerogenetische Einheiten Antarktikas 4.1. Archaische minerogenetische Einheiten 4.1.1. Archaische hochmetamorphe Areale 4.1.2. Archaische Grünstein-Granit-Gürtel 4.2. Proterozoische minerogenetische Provinzen . 4.2.1. Tafeldeckgebirgskomplexe 4.2.2. Aktivierte Grundgebirgseinheiten 4.2.3. Intrakontinentale mobile Gürtel 4.3. Riphäisch-phanerozoische minerogenetische Einheiten 4.3.1. Tafeldeckgebirgs-Provinzen 4.3.2. Aktivierte Grundgebirgseinheiten 4.3.2.1. Provinzen spätriphäisch-altpaläozoischer Aktivierung 4.3.2.2. Provinzen mesozoischer Aktivierung 4.3.2.3. Provinzen känozoischer Aktivierung 4.3.3. Intrakontinentale Tröge und Senken 4.3.3.1. Spätriphäisch-altpaläozoische Tröge 4.3.3.2. Intrakontinentales Ellsworth-Orogen 4.3.3.3. Tafelsenken des Victoria und des Wilkes Lands 4.3.3.4. Minerogenetische Provinzen junger Rift- und Spaltenzonen 4.3.3.4.1. Transantarktische Riftzone 4.3.3.4.2. Lambert Glacier-Riftzone des paläozoischemesozoischen Plattenrandes 4.3.3.4.3. Brainsfield-Riftzone 4.3.4. Passive Plattenränder 4.3.5. Aktive Plattenränder 4.3.5.1. Minerogenetische Provinzen des spätriphäisch-frühpaläozoischen Plattenrandes 4.3.5.2. Minerogenetische Provinzen des mittelpaläozoischen Plattenrandes 4.3.5.3. Minerogenetische Provinzen des paläozoisch-mesozoischen Plattenrandes 4.3.5.4. Minerogenetische Provinzen des meso-känozoischen Plattenrandes 5.Zusammenfassung. Abstract, Rezjume Literaturverzeichnis
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  • 24
    Call number: SR 90.0068(40) ; ZSP-320(E,40)
    In: Geologisches Jahrbuch
    Type of Medium: Series available for loan
    Pages: 7 S. + 1 Kt.-Beil.
    Series Statement: Geologisches Jahrbuch : Reihe E 40
    Language: German
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  • 25
    Call number: SR 90.0068(39) ; SR 90.0068(39) 2 Ex. ; ZSP-320(E,39)
    In: Geologisches Jahrbuch
    Type of Medium: Series available for loan
    Pages: 252 S. : Ill., graph. Darst., Kt.
    Series Statement: Geologisches Jahrbuch : Reihe E 39
    Language: English
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  • 26
    Call number: SR 90.0916(61) ; AWI G6-18-42972
    In: Sonderveröffentlichungen des Instituts der Universität Köln, Nr. 61
    Type of Medium: Series available for loan
    Pages: 105, 13 S. : Ill., graph. Darst., Kt.
    Series Statement: Sonderveröffentlichungen / Geologisches Institut der Universität zu Köln 61
    Language: German
    Note: Zugl.: Köln, Univ., Diss., 1986 , Inhaltsverzeichnis: Abstract, Kurzfassung. - 1. Untersuchungsraum. - 2. Lage der Profile. - 3. Methoden. - 4. Forschungsgeschichte. - 5. Die Schichtenfolge im Helikon-Gebirge. - 6, Die Domvrena-Schichten. - 7. Perdikovouno-Schichten. - 7.1 Profil am Anadematisma. - 7.2 Profil am Perdikovouno. - 7.3 Profil am Korombili. - 7.4 Stratigraphie der Perdikovouno-Schichten. - 7.5 Ablagerungsraum der Perdikovouno-Schichten. - 7.6 Isotopenverhältnisse. - 7.6.1 Profil am Anadematisma. - 7.6.2 Profil am Perdikovouno. - 7.6.3 Profil am Korombili. - 7.7 Diskussion. - 8. Diakopi-Schichten. - 8.1 Profil am Diakopi. - 8.2 Profil am Süßwasserkanal bei Domvrena. - 8.3 Profil am Steinbruch von Domvrena. - 8.4 Stratigraphie der Diakopi-Schichten. - 8.5 Ablagerungsraum der Diakopi-Schichten. - 8.6 Isotopenverhältnisse. - 8.6.1 Profil am Diakopi. - 8.6.2 Profil am Süßwasserkanal bei Domvrena. - 8.6.3 Profil am Steinbruch von Domvrena. - 8.7 Diskussion. - 9. Vounalakia-Schichten. - 9.1 Profil am Vounalakia. - 9.2 Profil an der Tomatenfabrik. - 9.3 Stratigraphie der Vounalakia-Schichten. - 9.4 Ablagerungsraum der Vounalakia-Schichten. - 9.5 Isotopenverhältnisse. - 9.6 Diskussion. - 10. Makariotissa-Schichten 10.1 Profil am Süßwasserkanal bei Domvrena. - 10.2 Profil bei Makariotissa. - 10.3 Radiolarien aus dem Profil von Makariotissa. - 10.4 Profil an der Sphinx. - 10.5 Stratigraphie der Makariotissa-Schichten. - 10.6 Ablagerungsraum der Makariotissa Schichten. - 10.7 Isotopenverhältnisse. - 10.7.1 Profil am Süßwasserkanal bei Domvrena. - 10.7.2 Profil bei Makariotissa. - 10.7.3 Kalksteine mit Kieselknollen. - 10.7.4 Profil an der Sphinx. - 10.8 Diskussion. - 11. Zusammenfassung der Ergebnisse. - 11.1 Profilaufbau. - 11.2 Isotopenkurven. - 11.3 Isotopenverhältnisse. - 12. Fossilienliste. - 13. Isotopendaten. - 14. Literatur. - Danksagung. , Zsfassung in engl. Sprache
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  • 27
    Call number: SR 99.0054(66) ; ZSP-320(B,66)
    In: German Antarctic North Victoria Land Expedition 1982/83
    In: Geologisches Jahrbuch
    Type of Medium: Series available for loan
    Pages: 321 S. + 2 Kt.-Beil.
    Series Statement: 66
    Language: English
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  • 28
    Call number: SR 90.0068(37) ; SR 90.0068(37) 2. Ex. ; ZSP-320(E,37)
    In: Geologisches Jahrbuch
    Type of Medium: Series available for loan
    Pages: 54 S.
    Series Statement: Geologisches Jahrbuch : Reihe E 37
    Language: English
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  • 29
    Series available for loan
    Series available for loan
    Berlin : Nationalkomitee für Geodäsie und Geophysik bei der Akademie der Wissenschaften der DDR
    Associated volumes
    Call number: Q 2453(II,28) ; MOP Per 581(2/28) ; ZSP-319/B-28
    In: Geodätische und geophysikalische Veröffentlichungen : Reihe 2, Solarterrestrische Beziehungen und Physik der Atmosphäre, Heft 28
    Type of Medium: Series available for loan
    Pages: 136 Seiten , Illustrationen
    Series Statement: Geodätische und geophysikalische Veröffentlichungen : Reihe 2, Solarterrestrische Beziehungen und Physik der Atmosphäre 28
    Language: English
    Note: Content: Improvement of the coulometric measurement of ozone in the near-ground layer of the atmosphere / W. Warmbt. - Some experimental data on the variability of the ozone density at different level of the lowest atmosphere / A. G. Amiranashvili ; T. G. Gzirishvili ; A. I. Kartsivadse ; A. M. Okudjava ; D. F. Kharchilava ; K. H. Grasnick. - Report on the intercomparison of instruments measuring ozone near the ground at the Hohenpeissenberg Observatory / W. Warmbt. - Some results of ozone-sonde ascents in the CSSR / J. Picha. - A system of monitoring the observation and calibration qualities of Dobson spectrophotometerswithin the Regional Association VI / P. Plessing. - Vertical ozone distribution over Lindenberg (52.22°N, 14.12°E), 1975 - 1982 / U. Feister ; P. Plessing ; K. H. Grasnick. - Correlations of the total ozone with thermal and dynamic processes in the atmosphere / M. Frimescu ; L. Manea. - Numerical simulation of seasonal-latitudinal and 11-year variations in ozonosphere composition based on the two-dimensional photochemical model / I. G. Dyominov ; A. M. Zadorozhny. - Ozone content variation over central Europe and stratospheric dynamics in late winter / G. Entzian ; K. H. Grasnick. - Long-term ozone variation / G. Entzian ; K. H. Grasnick.
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  • 30
    Monograph available for loan
    Monograph available for loan
    Wien [u.a.] : Springer
    Associated volumes
    Call number: G 8407/3 ; 14334/1 ; 14334/2 ; AWI G8-92-0398
    In: Angewandte Geophysik
    Type of Medium: Monograph available for loan
    Pages: 420 S. : Ill., graph. Darst., Kt.
    ISBN: 3211817999
    Language: German
    Note: Inhaltsverzeichnis: 1. Einführung / Dr. rer nat. habil. Heinz Militzer. - 2. Theorie seismischer Wellen / Dr. rer. nat. habil. Rolf Rösler. - 2.1. Allgemeine Grundlagen. - 2.1.1. Definition seismischer Wellen. - 2.1.2. Deformationen im elastischen Medium. - 2.1.3. Elastische Spannungen in festen Körpern. - 2.2. Stoffgesetze als Verknüpfung von Spannungen und Deformationen. - 2.2.1. Ideale Elastizität. - 2.2.2. Anelastizität. - 2.3. Die Wellengleichung und einige wichtige Lösungen im unbegrenzten Raum. - 2.3.1. Isotropes Material. - 2.3.1.1. Kompressions-(P-) und Scherungs-(S-) Wellen. - 2.3.1.2. Ebene Wellen. - 2.3.1.3. Kugelwellen. - 2.3.1.4. Zylinderwellen. - 2.3.2. Anisotropes Material. - 2.3.3. Seismische Wellen im anelastischen Material. - 2.4. Das Wellenfeld im geschichteten Raum. - 2.4.1. Stetigkeitsbedingungen an Diskontinuitätsflächen. - 2.4.2. Reflexion und Brechung ebener Wellen an Diskontinuitätsflächen. - 2.4.2.1. Die einfallende Welle ist eine SH-Welle. - 2.4.2.2. Die einfallende Welle ist eine P-Welle. - 2.4.2.3. Die einfallende Welle ist eine SV-Welle. - 2.4.3. Oberflächen- und Grenzschichtwellen. - 2.4.3.1. RAYLEIGH-Wellen. - 2.4.3.2. LOVE-Wellen. - 2.4.3.3. Kanal- oder Flözwellen. - 2.5. Die Berechnung reflexionsseismischer Wellenfelder. - 2.5.1. Methode der Integralgleichungen. - 2.5.1.1. Die KIRCHHOFFsche Formel. - 2.5.1.2. Die Anwendung der KIRCHHOFFschen Formel auf Diffraktionswellen. - 2.5.2. Methoden der endlichen Differenzen. - 3. Petrophysikalische Grundlagen / Dr. rer. nat. habil. Heinz Militzer. - 3.1. Ausbreitungsgeschwindigkeit. - 3.1.1. Allgemeine Grundlagen. - 3.1.2. Geschwindigkeitsbestimmungen unter Laborbedingungen. - 3.1.3. Einige Ergebnisse von Geschwindigkeitsbestimmungen an Gesteinsproben. - 3.2. Absorption. - 3.2.1. Allgemeine Grundlagen. - 3.2.2. Bestimmung des Absorptionskoeffizienten unter Laborbedingungen. - 3.2.3. Einige Ergebnisse der Bestimmung von Absorptionskoeffizienten an Gesteinsproben. - 3.3. Schallhärte. - 3.3.1. Allgemeine Grundlagen. - 3.3.2. Einige Daten zur Schallhärte. - 4. Apparativ-methodische Grundlagen / Dr. rer. nat Bernhard Forkmann ; Tit. ao. Prof. Dipl. Ing. Dr. mont. Rupert Schmöller. - 4.1. Anregung seismischer Wellen. - 4.1.1. Übersicht. - 4.1.2. Impulsanregung. - 4.1.3. Vibrationsanregung. - 4.1.4. Richtstrahlcharakteristik. - 4.2. Aufnahme seismischer Wellen. - 4.2.1. Übersicht. - 4.2.2. Geophone. - 4.2.3. Hydrophone. - 4.2.4. Bündelung. - 4.3. Registrierapparaturen. - 4.3.1. Übersicht. - 4.3.2. Analogapparaturen. - 4.3.3. Digitalapparaturen. - 4.3.4. Zusatz- und Spezialgeräte. - 4.3.4.1. Telemetriesysteme. - 4.3.4.2. Signalgenerator für Vibratorsteuerung. - 4.3.4.3. Korrelator/Summator. - 4.3.4.4. Stapelapparatur für Ingenieurseismik. - 5. Methodik seismischer Erkundungsarbeiten / Tit. ao. Prof. Dipl. Ing. Dr. mont. Rupert Schmöller. - 5.1. Projektierung. - 5.2. Feldmethodik der Reflexionsseismik. - 5.2.1. Trupporganisation. - 5.2.2. Methodik der Feldarbeiten. - 5.2.2.1. Energieanregung. - 5.2.2.2. Beobachtungsschemata. - 5.2.2.3. Besonderheiten der Scherwellenseismik. - 5.2.2.3.1. Scherwellenerzeugung. - 5.2.2.3.2. Aufnahmetechnik in der Scherwellenseismik. - 5.2.2.4. Besonderheiten der 3D-Seismik. - 5.2.2.5. Hilfsprozesse. - 5.2.2.5.1. Störwellenanalyse. - 5.2.2.5.2. Aufzeitschießen. - 5.2.2.5.3. Refraktionsseismische Kurzaufstellungen. - 5.2.2.6. Datenkontrolle und -aufbereitung. - 5.3. Besonderheiten der Seeseismik. - 5.3.1. Organisation. - 5.3.2. Meßtechnik auf See. - 5.3.3. Positionsbestimmung auf See. - 5:3.3.1. Radio-Navigation. - 5.3.3.2. Satelliten-Navigation. - 5.3.3.3. Andere Navigationssysteme. - 5.3.4. Flachwasserseismik. - 5.4. Feldmethodik der Refraktionsseismik. - 6. Geschwindigkeitsbestimmung / Dr. rer. nat. Bernhard Forkmann. - 6.1. Modellbetrachtungen. - 6.2. Geschwindigkeitsdefinitionen. - 6.3. Geschwindigkeitsbestimmung aus seismischen Messungen in Bohrungen. - 6.4. Geschwindigkeitsbestimmung aus reflexionsseismischen Messungen. - 6.5. Geschwindigkeitsbestimmung aus refraktionsseismischen Messungen. - 6.6. Gesehwindigkeitsansatz. - 7. Grundlagen der Analyse seismischer Signale / Dr. rer. nat. Bernhard Forkmann ; Dr. rer. nat. habil. Rolf Rösler. - 7.1. Systemtheoretische Betrachtungen zur Entstehung des Seismogramms. - 7.1.1. Lineare Systeme. - 7.1.2. Übertragungsfunktion und Impulsantwort. - 7.1.3. Physikalisch realisierbare Systeme. - 7.2. Das digitalisierte Seismogramm als diskrete (getastete) Funktion. - 7.2.1. Die Abtastung. - 7.2.1.1. Das Abjast-Theorem. - 7.2.1.2. Der Aliasing-Effekt. - 7.2.1.3. Die Signalrekonstruktion. - 7.2.2. Die Übertragungsfunktion diskreter Systeme. - 7.2.3. Die Z-Transformation. - 7.2.4. Das Signalkonzept. - 7.2.4.1. Die Definition des digitalen Wavelets. - 7.2.4.2. Das seismische Modellsignal. - 7.2.5. Das synthetische Seismogramm. - 7.3. Digitale Filter. - 7.3.1. Der Zusammenhang mit analogen Frequenzfiltern. - 7.3.2. Die Darstellung digitaler Frequenzfilter. - 7.3.2.1. Die Umwandlung von analogen in digitale Frequenzfilter. - 7.3.2.2. Digitale Nullphasenfilter. - 7.3.3. Geschwindigkeitsfilter. - 7.4. Das Seismogramm als stationäre Wertereihe. - 7.4.1. Das Impulsseismogramm als Zufallsprozeß. - 7.4.2. Stationarität und Ergodizität. - 7.4.3. Die Auto- und Kreuzkorrelationsfunktion. - 7.4.4. Die Dekonvolution. - 7.4.4.1. Optimalfilter nach WIENER. - 7.4.4.2. Vorhersage-Filterung. - 7.4.4.3. Homomorphe Dekonvolution. - 8. . Bearbeitung reflexionsseismischer Daten / Tit. ao. Prof. Dipl. Ing. Dr. mont. Rupert Schmöller. - 8.1. Stellung der Bearbeitung im Gesamtprozeß. - 8.2. Zielstellung der seismischen Datenbearbeitung. - 8.3. Methoden der seismischen Datenbearbeitung. - 8.4. Darstellungsmöglichkeiten der seismischen Informationen. - 8.4.1. Profildarstellungen. - 8.4.2. Flächendarstellungen. - 8.4.3. Andere Darstellungen. - 8.5. Rechentechnik. - 8.6. Technologie der Datenbearbeitung. - 8.7. Standardmäßige Datenbearbeitungsprozesse. - 8.7.1. Vorbereitungsphase. - 8.7.2. Amplitudenausgleich. - 8.7.3. Statische Korrekturen und automatische statische Restkorrekturen. - 8.7.4. Dynamische Korrektur. - 8.7.5. Unterdrückung von Erst- und Refraktionseinsätzen. - 8.7.6. Die CMP-Stapelung. - 8.7.7. Frequenzfilterung. - 8.7.8. Inverse Filterung. - 8.8. Weiterführende Bearbeitungen. - 8.8.1. Seismische Migration. - 8.8.1.1. Horizontalmigration. - 8.8.1.2. Wellenfrontmigration und Diffraktionsstapeln. - 8.8.1.3. Migration als Lösung der Wellengleichung. - 8.8.1.4. Tiefenmigration. - 8.8.1.5. 3D-Migration. - 8.8.2. Geschwindigkeitsfilter. - 8.8.3. Waveletprocessing. - 9. Auswertung und Darstellung seismischer Daten / Dr. phil. Franz Weber. - 9.1. Geometrie der Wellenwege und zugehörige Laufzeitkurven (Reflexionsseismik). - 9.1.1. Reflexion an einer Schichtgrenze. - 9.1.2. Horizontaler n-Schichtfall. - 9.1.3. Dreidimensionaler Fall. - 9.1.3.1. Schußpunkt liegt im Profil. - 9.1.3.2. Schußpunkt liegt außerhalb des Profils. - 9.2. Einige einfache Anwendungen bei der Tiefendarstellung von Reflexionen. - 9.2.1. Tangentenmethode. - 9.2.2. Spiegelpunktmethode. - 9.3. Gradientmedien. - 9.3.1. Problemstellung. - 9.3.2. Allgemeine Beziehungen. - 9.3.3. Lineare Geschwindigkeitszunahme mit der Tiefe. - 9.3.4. Wellenfrontkarten. - 9.4. Beugungswellen. - 9.5. Mehrfachreflexionen (multiple Reflexionen). - 9.5.1. Multiple mit langem Weg. - 9.5.2. Mehrfachreflexionen mit kurzem Wellenweg. - 9.5.3. Abschwächung und Eliminierung von Mehrfachreflexionen. - 9.6. Spezielle Lagerungsformen. - 9.6.1. Gekrümmte Reflektoren. - 9.6.2. Antiklinale. - 9.6.3. Synklinale. - 9.6.4. Brüche. - 9.7. Geologische Modellierung reflexionsseismischer Ergebnisse. - 9.7.1. Kriterien für das Erkennen von Reflexionen. - 9.7.2. Kontrolle des Datenmaterials. - 9.7.3. Zeit- und Tiefenprofile. - 9.7.4. Kartend
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  • 31
    Monograph available for loan
    Monograph available for loan
    New York [u.a.] : Springer
    Call number: M 93.0653 ; AWI A6-92-0220
    Type of Medium: Monograph available for loan
    Pages: xiv, 710 S.
    Edition: 2. ed., corr. 2. printing
    ISBN: 038796388X
    Classification:
    Geodynamics
    Language: English
    Note: Contents: 1 Preliminaries. - 1.1 Geophysical Fluid Dynamics. - 1.2 The Rossby Number. - 1.3 Density Stratification. - 1.4 The Equations of Motion in a Nonrotating Coordinate Frame. - 1.5 Rotating Coordinate Frames. - 1.6 Equations of Motion in a Rotating Coordinate Frame. - 1.7 Coriolis Acceleration and the Rossby Number. - 2 Fundamentals. - 2.1 Vorticity. - 2.2 The Circulation. - 2.3 Kelvin's Theorem. - 2.4 The Vorticity Equation. - 2.5 Potential Vorticity. - 2.6 The Thermal Wind. - 2.7 The Taylor-Proudman Theorem. - 2.8 Geostrophic Motion. - 2.9 Consequences of the Geostrophic and Hydrostatic Approximations. - 2.10 Geostrophic Degeneracy. - 3 lnviscid Shallow-Water Theory. - 3.1 Introduction. - 3.2 The Shallow-Water Model. - 3.3 The Shallow-Water Equations. - 3.4 Potential-Vorticity Conservation: Shallow-Water Theory. - 3.5 Integral Constraints. - 3.6 Small-Amplitude Motions. - 3.7 Linearized Geostrophic Motion. - 3.8 Plane Waves in a Layer of Constant Depth. - 3.9 Poincare and Kelvin Waves. - 3.10 The Rossby Wave. - 3.11 Dynamic Diagnosis of the Rossby Wave. - 3.12 Quasigeostrophic Scaling in Shallow-Water Theory. - 3.13 Steady Quasigeostrophic Motion. - 3.14 Inertial Boundary Currents. - 3.15 Quasigeostrophic Rossby Waves. - 3.16 The Mechanism for the Rossby Wave. - 3.17 The Beta-Plane. - 3.18 Rossby Waves in a Zonal Current. - 3.19 Group Velocity. - 3.20 The Method of Multiple Time Scales. - 3.21 Energy and Energy Flux in Rossby Waves. - 3.22 The Energy Propagation Diagram. - 3.23 Reflection and the Radiation Condition. - 3.24 Rossby Waves Produced by an Initial Disturbance. - 3.25 Quasigeostrophic Normal Modes in Closed Basins. - 3.26 Resonant Interactions. - 3.27 Energy and Enstrophy. - 3.28 Geostrophic Turbulence. - Appendix to Chapter 3. - 4 Friction and Viscous Flow. - 4.1 Introduction. - 4.2 Turbulent Reynolds Stresses. - 4.3 The Ekman Layer. - 4.4 The Nature of Nearly Frictionless Flow. - 4.5 Boundary-Layer Theory. - 4.6 Quasigeostrophic Dynamics in the Presence of Friction. - 4.7 Spin-Down. - 4.8 Steady Motion. - 4.9 Ekman Layer on a Sloping Surface. - 4.10 Ekman Layer on a Free Surface. - 4.11 Quasigeostrophic Potential Vorticity Equation with Friction and Topography. - 4.12 The Decay of a Rossby Wave. - 4.13 Side-Wall Friction Layers. - 4.14 The Dissipation of Ens trophy in Geostrophic Turbulence. - 5 Homogeneous Models of the Wind-Driven Oceanic Circulation. - 5.1 Introduction. - 5.2 The Homogeneous Model. - 5.3 The Sverdrup Relation. - 5.4 Meridional Boundary Layers: the Munk Layer. - 5.5 Stommel's Model: Bottom Friction Layer. - 5.6 Inertial Boundary-Layer Theory. - 5.7 Inertial Currents in the Presence of Friction. - 5.8 Rossby Waves and the Westward Intensification of the Oceanic Circulation. - 5.9 Dissipation Integrals for Steady Circulations. - 5.10 Free Inertial Modes. - 5.11 Numerical Experiments. - 5.12 Ekman Upwelling Circulations. - 5.13 The Effect of Bottom Topography. - 5.14 Concluding Remarks on the Homogeneous Model. - 6 Quasigeostrophic Motion of a Stratified Fluid on a Sphere. - 6.1 Introduction. - 6.2 The Equations of Motion in Spherical Coordinates: Scaling. - 6.3 Geostrophic Approximation: ε = O(L/r0 ) ≪ 1. - 6.4 The Concept of Static Stability. - 6.5 Quasigeostrophic Potential-Vorticity Equation for Atmospheric Synoptic Scales. - 6.6 The Ekman Layer in a Stratified Fluid. - 6.7 Boundary Conditions for the Potential-Vorticity Equation: the Atmosphere. - 6.8 Quasigeostrophic Potential-Vorticity Equation for Oceanic Synoptic Scales. - 6.9 Boundary Conditions for the Potential-Vorticity Equation: the Oceans. - 6.10 Geostrophic Energy Equation and Available Potential Energy. - 6.11 Rossby Waves in a Stratified Fluid. - 6.12 Rossby-Wave Normal Modes: the Vertical Structure Equation. - 6.13 Forced Stationary Waves in the Atmosphere. - 6.14 Wave-Zonal Flow Interactions. - 6.15 Topographic Waves in a Stratified Ocean. - 6.16 Layer Models. - 6.17 Rossby Waves in the Two-Layer Model. - 6.18 The Relationship of the Layer Models to the "Level" Models. - 6.19 Geostrophic Approximation ε ≪ L/r0 〈 1; the Sverdrup Relation. - 6.20 Geostrophic Approximation ε ≪ 1, L/r0 = O(1). - 6.21 The Thermocline Problem. - 6.22 Layer Models of the Thermocline. - 6.23 Flow in Unventilated Layers: Potential Vorticity Homogenization. - 6.24 Quasigeostrophic Approximation: an Alternative Derivation. - 7 Instability Theory. - 7.1 Introduction. - 7.2 Formulation of the Instability Problem: the Continuously Stratified Model. - 7.3 The Linear Stability Problem: Conditions for Instability. - 7.4 Normal Modes. - 7.5 Bounds on the Phase Speed and Growth Rate. - 7.6 Baroclinic Instability: the Basic Mechanism. - 7.7 Eady's Model. - 7.8 Charney's Model and Critical Layers. - 7.9 Instability in the Two-Layer Model: Formulation. - 7.10 Normal Modes in the Two-Layer Model: Necessary Conditions for Instability. - 7.11 Baroclinic Instability in the Two-Layer Model: Phillips' Model. - 7.12 Effects of Friction. - 7.13 Baroclinic Instability of Nonzonal Flows. - 7.14 Barotropic Instability. - 7.15 Instability of Currents with Horizontal and Vertical Shear. - 7.16 Nonlinear Theory of Baroclinic Instability. - 7.17 Instability of Non parallel Flow. - 8 Ageostrophic Motion. - 8.1 Anisotropic Scales. - 8.2 Continental-Shelf Waves. - 8.3 Slow Circulation of a Stratified, Dissipative Fluid. - 8.4 The Theory of Frontogenesis. - 8.5 Equatorial Waves. - Selected Bibliography. - Index.
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  • 32
    Call number: AWI E1-89-0347
    Type of Medium: Monograph available for loan
    Pages: 50 Seiten , Illustrationen
    Language: English
    Note: Contents: Preface. - Part I German oceanographic institutions. - Part II German oceanographic expeditions. - Part III German oceanographers. - References.
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  • 33
    Series available for loan
    Series available for loan
    Leipzig : Akademie der Wissenschaften der DDR, Zentralinstitut für Isotopen- und Strahlenforschung
    Associated volumes
    Call number: ZSP-980-131
    In: ZfI-Mitteilungen, Nr. 131
    Type of Medium: Series available for loan
    Pages: 142 Seiten , Illustrationen
    ISSN: 0323-8776
    Series Statement: ZfI-Mitteilungen 131
    Language: German
    Note: Inhaltsverzeichnis: 1. Einleitung. - 2. Aufgabenstellung. - 3. Untersuchungen zur Beschreibung des von Meßgutinhomogenitäten verursachten Meßfehlers. - 3.1. Berechnung der Größe des Meßfehlers für verschiedene Meßanordnungen. - 3.1.1. Transmissionsmessung mit Gammastrahlung. - 3.1.2. 2-Energien-Gammastrahlungs-Transmissionsmeßverfahren. - 3.1.3. Streumeßverfahren. - 3.1.4. Andere Meßverfahren. - 3.2. Experimentelle Überprüfung. - 3.2.1. Ziel der Experimente. - 3.2.2. Beschreibung des Meßaufbaues. - 3.2.3. Durchführung und Ergebnisse der Experimente. - 3.2.4. Größe der Meßgutinhomogenitäten an zwei konkreten Aschemeßstellen. - 4. Vier Verfahren zur Eliminierung und Korrektur des Einflusses der Meßgutinhomogenitäten. - 4.1. Messung des Inhomogenitätsparemeters γ und nachträgliche Korrektur. - 4.1.1. Prinzip des Verfahrens. - 4.1.2. Eine Methode zur Messung des Parameters γ an schnell bewegtem Meßgut. - 4.1.2.1. Beschreibung der γ-Meßmethode. - 4.1.2.2. Experimenteller Test der γ-Meßmethode. - 4.1.3. Hinweise zur Anwendung. - 4.2. Unterteilung der Gesamtmaßzeit in kurze Elementarmeßzeiten. - 4.2.1. Prinzip des Verfahrens. - 4.2.2. Probleme des Verfahrens. - 4.2.2.1. Überblick. - 4.2.2.2. Rechenzeit. - 4.2.2.3. Statistische Effekte durch das Logarithmieren kleiner Impulszahlen. - 4.2.2.4. Restfehler, verursacht durch noch verbleibende r-Schwankungen während der Elementarmeßzeit. - 4.2.3. Erfahrungen bei der praktischen Anwendung. - 4.3. Messung mit langer Totzeit. - 4.3.1. Prinzip des Verfahrens. - 4.3.2. Messung mit nachgeführter Totzeit. - 4.3.3. Messung mit zwei unterschiedlichen Totzeiten. - 4.4. Meßsignalgewinnung aus der Zeitintervallverteilung. - 4.4.1. Prinzip des Verfahrens. - 4.4.2. Experimentelle Überprüfung. - 4.4.3. Probleme des Verfahrens. - 4.4.4. Messung mit speziellem Impulsgenerator zur Linearisierung der mittleren Impulsdichte. - 5. Vergleich der Verfahren zur Eliminierung und Korrektur des Einflusses der Meßgutinhomogenitäten. - 6. Konzept für ein Aschemeßgerät auf der Basis der 2-Energien-Gammastrahlungs-Transmission mit Signalgewinnung aus der Zeitintervallverteilung. - 7. Zusammenfassung und Schlußfolgerungen. - Anlagen 1 - 19. - Erläuterung der Formelzeichen, der Indizes und einiger Begriffe. - Literaturverzeichnis.
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  • 34
    Call number: AWI G6-19-93060
    Type of Medium: Monograph available for loan
    Pages: 6 Seiten, 29 Blätter, 7 Seiten
    Language: German , French , English
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  • 35
    Monograph available for loan
    Monograph available for loan
    Boulder, Colo. : Plant Ecology Laboratory, Institute of Arctic and Alpine Research University of Colorado
    Call number: AWI G3-23-94998
    Type of Medium: Monograph available for loan
    Pages: 29, 27 Seiten , Illustrationen
    Series Statement: U.S. Department of Energy R4D Program Data Report
    Language: English
    Note: Table of Contents List of figures, tables, appendices Introduction Methods Locations of the transects Site factors Soil Chemical properties Soil pH Cations NO3 Total P and SO4 Vegetation sampling Results Discussion Conclusions Acknowledgements References Figures Tables Appendices
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  • 36
    Series available for loan
    Series available for loan
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-40
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 161 S. : graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 40
    Language: English
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  • 37
    Call number: AWI G7-88-0758
    Type of Medium: Monograph available for loan
    Pages: X, 368 S. , Ill., Kt.
    ISBN: 9027723702
    Series Statement: Glaciology and Quaternary Geology 4
    Language: English
    Note: TABLE OF CONTENTS: Preface. - List of participants. - The West Antarctic Ice Sheet : the need to understand its dynamics / C. J. VAN DER VEEN. - Force budget of ice sheets / I. M. WHILLANS. - On the oceanic circulation near a shelf-ice edge / G. J. F. VAN HEIJST. - Quantitative estimates of the mass flux and ice movement along the ice edges in the eastern and southern Weddell Sea / M. A. LANGE. - Some aspects of the flow of the Ronne Ice Shelf / C. S. M. DOAKE. - Unconfined ice-shelf flow / L. W. MORLAND. - Plane and radial ice-shelf flow with prescribed temperature profile / L. W. MORLAND and R. ZAINUDDIN. - Ice-shelf backpressure : form drag versus dynamic drag / D. R. MACAYEAL. - Ice stream-ice shelf interaction in West Antarctica / R. A. BINDSCHADLER, D. R. MACAYEAL and S. N. STEPHENSON. - A few preliminary results from the glaciogeophysical survey of the interior Ross Embayment (GSIRE) / C. R. BENTLEY, S. SHABTAIE, D. D. BLANKENSHIP, R. B. ALLEY and S. T. ROONEY. - On the flow within the transition zone between ice sheet and ice shelf / K. HERTERICH. - The finite-element method applied to a time-dependent flowband model / J. L. FASTOOK. - Longitudinal stresses and basal sliding : a comparative study / C. J. VAN DER VEEN. - A subglacial aquifer bed model and water pressure dependent basal sliding relationship for a West Antarctic ice stream / C. S. LINGLE and T. J. BROWN. - The heat budget of the Ross drainage basin / J. OEKLEMANS. - Numerical modelling of the large-scale basal water flux under the West Antarctic Ice Sheet / W. F. BUDD and D. JENSSEN. - Modelling the response of the West Antarctic Ice Sheet to a climatic warming / W. F. BUDD, B. J. MCINNES, D. JENSSEN and I. N. SMITH. - Subject index. - Geographic index.
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  • 38
    Monograph available for loan
    Monograph available for loan
    Berlin : Verlag Neues Leben
    Call number: AWI E3-18-91898
    Type of Medium: Monograph available for loan
    Pages: 32 Seiten , Illustrationen , 20 cm
    ISBN: 3355005347 (geh.)
    Series Statement: Das neue Abenteuer 492
    Language: German
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  • 39
    Call number: AWI G7-19-92305
    Type of Medium: Monograph available for loan
    Pages: 116 Blätter
    Language: English
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  • 40
    Call number: ZSP-201-87/14
    In: CRREL Report, 87-14
    Description / Table of Contents: During February and March 1980 the physical properties of Weddell Sea pack ice were investigated via core drilling of 66 floes located along the transect of 600 nautical miles from 64°S to 74°S latitude at roughly 40°W longitude. These studies revealed widespread frazil ice in amounts not known to exist in Arctic sea ice of comparable age and thickness. It is estimated from structure studies of 62 of the 66 floes that 54% of the total ice production of the Weddell Sea is generated as frazil. The disposition and exceptional thickness of the frazil show that mechanisms other than surface turbulence effects are involved and imply that the circulation and structure of the water in the upper levels of the Weddell Sea are significantly different from those in the Arctic basin. Salinities of both first-year and multi-year floes are notably higher than those of their Arctic counterparts because summer surface melting is rare or absent in the Weddell Sea; in the Arctic, downward percolating meltwater flushes through the ice and lowers its salinity. Fluorescence was evaluated as a means of revealing biological activity in Weddell Sea pack ice. It proved useful as an index of combined living and dead material in the ice, but measurements failed to establish any consistent relationship between fluorescence and salinity as suggested be earlier work in the Weddell Sea.
    Type of Medium: Series available for loan
    Pages: iv, 80 Seiten , Illustrationen
    Series Statement: CRREL Report 87-14
    Language: English
    Note: CONTENTS Preface Introduction Sea ice structure and classification Logistics and field operations Analytical techniques Crystalline structure Fluorescence Results Salinity Crystalline structure Fluorescence Description of selected floes Conclusions Literature cited Appendix A: Floe descriptions
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  • 41
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/15
    In: CRREL Report, 87-15
    Description / Table of Contents: Constant strain-rate tension tests were conducted on remolded saturated frozen Fairbanks silt at various temperatures, strain rates, and densities. It was found that the critical strain rate of the ductile-brittle transition is not temperature-dependent at temperatures down to -5°C, but varies with density. The peak tensile strength decreases considerable with decreasing strain rate for ductile failure, but it decreases slightly with increasing strain rate for brittle fracture. The failure strain remains almost constant at temperatures lower than about -2°C, but it varies with density and strain rate at -5°C. The initial tangent modulus is independent of strain rate and increases with decreasing temperature and density.
    Type of Medium: Series available for loan
    Pages: v, 29 Seiten , Illustrationen
    Series Statement: CRREL Report 87-15
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Testing Material Specimen preparation Testing procedure and apparatus Results Discussion Peak tensile strength, σm Failure tensile strain, ϵf Initial tangent modulus and 50% peak strength modulus Discussion of test techniques Conclusions Literature cited Appendix A: Physical properties of Fairbanks silt specimens Appendix B: Unfrozen water content data of Fairbanks silt with three typical water contents
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  • 42
    Call number: ZSP-201-87/17
    In: CRREL Report, 87-17
    Description / Table of Contents: The ability to map frazil ice deposits and water channels beneath an ice-covered river in central Alaska using the magnetic induction conductivity (MI) technique has been assessed. The study was performed during the first week of March of 1986 on the Tanana River near Fairbanks and employed a commercially available instrument operating at a fixed frequency with a fixed antenna (coil) spacing and orientation. Comparisons of the MI data with theoretical models based upon physical data measured along three cross sections of the river demonstrate the sensitivity of the MI technique to frazil ice deposits. The conductivity generally derived for the frazil ice deposits encountered is very low (approx. .00063 s/m) when compared with the measured value for water (approx. 0.011 S/m), and is similar to the calculated values for gravel and sandy gravel bed sediments. In all three cross sections, maxima in the apparent conductivity profiles correlated with frazil ice deposits. Difficulties, possibly due to adverse effects of cold weather upon instrument calibration, affected the quantitative performance of the instrument on one cross section, although the interpretation of the data (locations of open channels vs frazil deposits) was qualitatively unaffected.
    Type of Medium: Series available for loan
    Pages: iii, 17 Seiten , Illustrationen
    Series Statement: CRREL Report 87-17
    Language: English
    Note: CONTENTS Abstract Preface Introduction Magnetic induction conductivity method Site description and survey methods Cross section field data and modeling results X6 X3A X4 Conclusions and recommendations Literature cited Appendix A: Discussion of errors Appendix B: Modeling data
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  • 43
    Journal available for loan
    Journal available for loan
    Call number: AWI P6-90-0328
    Type of Medium: Journal available for loan
    Pages: 128 Seiten , Illustrationen, graphische Darstellungen, Karten
    ISSN: 0207-5709
    Series Statement: Wissenschaft in der UdSSR 2/1987
    Language: German
    Note: Inhalt: REPORTAGE. - Der Zeit voraus / J. Knorre. - WISSENSCHAFT AUF DEM VORMARSCH. - Molekularbiologie des Krebses / F. Kisseljow. - Das Antlitz der Venus / O. Rshiga, Ju. Alexandrow, A. Sidorenko, A. Basilewski. - Frost und Pflanzen / T. Trunowa. - Mikroexplosionen an der Metalloberfläche / G. Mesjaz, W. Putschkarjow. - ENTDECKUNGEN UND ERFINDUNGEN. - Katalysator des technischen Fortschritts / I. Najaschkow. - Künstliche "Schmierung" für Gelenke / W. Jefimow. - Recht auf Entdeckung / W. Sapelkin, W. Potozki. - NEUES AUS DEM FORSCHUNGSLABOR. - Kälte zur Herzbehandlung / A. Urakow. - AUSZEICHNUNGEN. - "... immer eine Handbreit Wasser unterm Kiel!" / G. Bushinskaja. - WISSENSCHAFT FÜR DIE PRAXIS. - Badekuren / N. Kamenskaja, I. Kasjanowa. - WISSENSCHAFT IM DIENSTE DER PRODUKTION. - Könnten Diamanten reden / W. Kowalski, P. Schamajew. - GESCHICHTE DER WISSENSCHAFT IN GELEHRTENBIOGRAPHIEN. - Boris Lischkow. "In der Wissenschaft wiegen nicht nur Fakten und Logik, sondern auch die Vorstellungskraft, bildhaftes Denken." / R. Balandin. - UNSER HAUS IST DIE ERDE. - Geheimnisse im Inneren der Antarktis / W. Iwanow, G. Grikurow, W. Massolow. - Die wichtigste Naturressource / W. Bobrinew. - BEI UNS ZU GAST. - Die Zeitschrift "spectrum". - Die Zeitschrift "Mikroprozessornyje sredstwa i sistemy". - KONTAKT: LESER-REDAKTION. - LACHPAUSE. - IN FACHZEITSCHRIFTEN GEBLÄTTERT. - "Die verlorene Welt" der Kurilen. - Die diversen Wirkungen des Drucks. - Wo ist das Leben entstanden? Wieviele Erdteile gibt es?
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  • 44
    Monograph available for loan
    Monograph available for loan
    Cambridge : British Antarctic Survey
    Call number: AWI E3-89-0106
    Type of Medium: Monograph available for loan
    Pages: 156 Seiten , 29 cm
    Edition: First edition: June 1987
    ISBN: 0856651230
    Language: English
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  • 45
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/4
    In: CRREL Report, 87-4
    Description / Table of Contents: In this report we present results of measurements of the crystalline structure and salinity characteristics of sea ice in Hebron Fiord and vicinity, Labrador. Structurally, the fiord ice was entirely first year and composed predominantly of congelation, columnar-type crystals. At most of the sampling sites the ice exhibited moderately to strongly aligned c-axes consistent with the inferred direction of near surface currents in the fiord. Generally diminished values of bulk salinity at five separate locations reflect the warm ice conditions encountered at the time of sampling (late May) and the effect of meltwater flushing in promoting loss of brine, vertically, from the ice sheet. Observations outside Hebron Fiord indicated the presence of only minor amounts of multiyear ice during the latter part of May.
    Type of Medium: Series available for loan
    Pages: iii, 25 Seiten , Illustrationen
    Series Statement: CRREL Report 87-4
    Language: English
    Note: Contents: Abstract Preface Introduction Sampling procedure Analytical techniques Salinities Crystal structure Results Salinity Crystal structure Brine layer spacing Incidental temperatures Conclusions Literature cited Appendix A: Vertical and horizontal thin section photographs of sea ice from various sites
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  • 46
    Call number: ZSP-201-87/3
    In: CRREL Report, 87-3
    Description / Table of Contents: This report describes the structural analysis of multi-year sea ice samples that were tested in the first phase of a program designed to obtain a comprehensive understanding of the mechanical properties of multi-year sea ice from the Alaskan Beaufort Sea. Each test specimen is classified into one of three major ice texture categories: granular, columnar, or a mixture of columnar and granular ice. The crystallographic orientation, percent columnar ice, and grain size are then evaluated for the granular and/or columnar ice in the sample. Test results are interpreted with respect to these parameters. The overall composition of multi-year ridges is also considered, based on the extensive field sampling that was done in the program
    Type of Medium: Series available for loan
    Pages: iii, 40 Seiten , Illustrationen
    Series Statement: CRREL Report 87-3
    Language: English
    Note: CONTENTS Abstract Preface Introduction Sample analysis Continuous multi-year ridge core Tested multi-year ridge ice samples Tested multi-year floe ice samples Ice description Uniaxial constant-strain-rate compression tests Uniaxial constant-load compression tests Uniaxial constant-strain-rate tension tests Triaxial constant-strain-rate compression test Conclusions Literature cited Appendix A: Multi-year ridge sample data Appendix B: Multi-year floe sample data
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  • 47
    Call number: ZSP-201-87/6
    In: CRREL Report, 87-6
    Description / Table of Contents: Two-phase dielectric mixing model results are presented showing the electromagnetic properties of sea ice versus depth. The modeled data are compared with field measurements and show comparable results. It is also shown how the model data can be used in support of impulse radar and airborne electromagnetic(AEM) remote sensing of sea ice. Examples of the remote measurement of sea ice thickness using impulse radar operating in the 80- to 300-MHz frequency band and low-frequency (500 to 30,000 Hz) sounding techniques are presented and discussed. Keywords: Polar regions; Radar pulses.
    Type of Medium: Series available for loan
    Pages: vii, 55 Seiten , Illustrationen
    Series Statement: CRREL Report 87-6
    Language: English
    Note: Contents Abstract Preface Nomenclature Introduction Sea ice growth and structure Model sea ice Brine salinity Seawater and model brine conductivity Complex dielectric constant of brine Electromagnetic properties of model sea ice at 100 MHz Electromagnetic properties of model sea ice at 100 and 500 MHz and 1 and 5 GHz Example of impulse radar sea ice profiling results Example of frequency-domain electromagnetic sea ice thickness sounding Concluding remarks Literature cited
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  • 48
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/13
    In: CRREL Report, 87-13
    Description / Table of Contents: Thermodynamic properties of electrolyte solutions change rapidly below 25C, but these properties are seldom measured over the low temperature range (below 0C), even though some salt solutions can remain unfrozen to -50C. The heat capacities of concentrated solutions (0.5-0.6 molal) of NaC-H2O were measured from 25C to -40C as part of a study to provide thermodynamic data of salt solutions for use in cold regions chemical and geophysical studies. A differential scanning calorimeter was used to measure specific heat capacity from cooling scans as a function of temperature and concentration. The heat capacity data were fit to the equations of Pitzer and coworkers to obtain activity and osmotic coefficients of NaC and H2O, respectively, below o C. Supercooling of the solutions was encouraged by using a fast scan rate (10d2/minute) so that specific heat could be measured to lower temperatures than would be possible if the solutions were allowed to equilibrate with the solid phases. The solubility of ice was calculated and compared to the experiment freezing point of NaC solutions.
    Type of Medium: Series available for loan
    Pages: ii, 16 Seiten , Illustrationen
    Series Statement: CRREL Report 87-13
    Language: English
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  • 49
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/10
    In: CRREL Report, 87-10
    Description / Table of Contents: Uniaxial constant-stress and constant-strain-rate compression tests were conducted on more than 200 remolded, saturated, frozen specimens of Fairbanks silt under various conditions. A series of curves of stress vs strain rate for various temperatures of strain rates ranging from about 6x10-2 to 10-8s-1show a close strength correspondence between the constant-stress and-costant strain-rate tests. All of these "complete" stress vs strain rate curves could not be described by a single power law or exponential equation, indicating that different deformation mechanisms are dominant within different ranges of strainrate Two critical strain rates for distinguishing between the different deformation mechanisms were ob-served to be near 10- 3 and 10-6 s-1 for the medium-dense frozen Fairbanks silt. The former indicates the transition from ductile failure to moderate brittle fracture as strain rate increases, while the latter indicates the transition from dislocation creep to glide creep (by the authors' definition). Based on the change in flow law, two fundamental creeps were classified: short-term creep, which is governed by glide creep, and long-term creep, which is governed by dislocation creep. The failure criterion of frozen silt has a general form of em x tm = Ef, where m depends only on density, and tm is in minutes if m is not 1. The failure strain Ef was not sensitive to temperature and strain rate over a certain range of strain rates, but it was very sensitive to density. Assur's creep model (1980) for ice was used to fit the creep data in this study. It works well for short-term creep but does not fit as well for long-term creep. The rate process theory was applied to the creep data. A very high value of experimental activation energy was obtained for lower stresses, and a very high value of apparent activation energy was observed for higher temperatures. The peak compressive strength was very sensitive to temperature and strain rate but relatively insensitive to density. While the initial tangent modulus is not-sensitive to strain rate, it increases with decreasing temperature and density.
    Type of Medium: Series available for loan
    Pages: vi, 75 Seiten , Illustrationen
    Series Statement: CRREL Report 87-10
    Language: English
    Note: CONTENTS Abstract Preface Introduction Review of previous work Specimen preparation Material Molding Testing procedure and apparatus Test results Definition of strain and stress Definition of creep failure Definition of failure in constant-strain-rate tests Definition of initial yield strength Determination of initial tangent modulus and 50% peak strength modulus Creep behavior General nature of the creep process and the failure mode Minimum creep rate Time to creep failure Relationship between t, and tm Creep failure strain and failure criterion Creep model and prediction of creep strain Strength behavior General stress-strain behavior and failure mode Peak compressive strength Initial yield strength Failure strain Initial yield strain Initial tangent modulus 50% peak strength modulus Correspondence between constant-stress tests and constant-strain-rate tests Conclusions Literature cited Appendix A: Unfrozen water content data Appendix B: Physical properties of samples tested
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  • 50
    Series available for loan
    Series available for loan
    Bremerhaven : Alfred-Wegener-Institut für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-290-1995/1996
    In: Forschungsprogramm / Alfred-Wegener-Institut für Polar- und Meeresforschung, 1995/1996
    Type of Medium: Series available for loan
    Pages: 163 Seiten
    Series Statement: Forschungsprogramm / Alfred-Wegener-Institut für Polar- und Meeresforschung 1995/1996
    Language: German
    Note: Inhaltsverzeichnis: AUFGABEN, ZIELE UND RESSOURCEN DES INSTITUTS = Objectives, Targets, and Resources of the Institute. - 1. DAS GEKOPPELTE SYSTEM : OZEAN-ATMOSPHÄRE-KRYOSPHÄRE = The coupled system : Ocean-Atmosphere-Cryosphere. - 1.1 PHYSIKALISCHE PROZESSE IN DEN POLARMEEREN = Physical processes in polar seas. - 1.1.1 Modeliierung der thermohalinen Zirkulation und Spurenstoffausbreitung = Modelling of thermohaline and trace matter circulation. - 1.1.2 Bestimmung der ozeanischen Zirkulation aus Beobachtungen = Determination of ocean circulation from observations. - 1.1.3 Transformation und Ausbreitung von Wassermassen im südlichen Atlantischen Ozean = Transformation and distribution of water masses in the southern Atlantic Ocean. - 1.1.4 Thermohaliner Aufbau und Zirkulation des Nordpolarmeers = Thermohaline structure and circulation of the Arctic Ocean. - 1.1.5 Untersuchung von Küstenpolynyas: Nordwasser-Polynya = lnvestigation of coastal polynyas: North water. - 1.1.6 Transporte und Wassermassenbildung in der Grönlandsee = Transports and formation of water masses in the Greenland Sea. - 1.1.7 Modellierung von Konvektion im Ozean = Modelling of convection in the ocean. - 1.1.8 Variationen des anorganischen Kohlenstoffs in der ozeanischen Deckschicht = Variations of anorganic carbon in the oceanic surface layer. - 1.1.9 Die großräumige Verteilung des Meereises und ihre zeitliche Entwicklung in der Arktis und Antarktis = The large-scale distribution of sea-ice and its evolution in time in the Arctic and Antarctic. - 1.1.10 Die Mikrostruktur des Meereises und ihre physikalischen Auswirkungen = Sea-ice micro-structure and its physical effects. - 1.1.11 Neue Methoden zur Bestimmung der Meereisdicke und ihre Erprobung unter verschiedenen Umgebungsbedingungen = New methods to determine sea-ice thickness and their testing under different environmental conditions. - 1.2 PHYSIKALISCHE UND CHEMISCHE PROZESSE IN DER POLAREN ATMOSPHÄRE = Physical and chemical processes in the polar atmosphere. - 1.2.1 Einfluß heterogener Randbedingungen auf die Turbulenz und die mittleren Größen in der atmosphärischen Grenzschicht = lnfluence of heterogeneaus boundary conditions on turbulence and mean values in the atmospheric boundary layer. - 1.2.2 Die Wirkung von Wolken und Dunst auf den Ozean-Atmosphären-Austausch in Meereisregionen = The effect of clouds and haze on the ocean-atmosphere exchange in sea-ice covered regions. - 1.2.3 Spurenstoffe und Ozon in der polaren Stratosphäre = Trace matters and ozone in the polar atmosphere. - 1.2.4 Die Zirkulation der Stratosphäre über der Arktis und ihr Einfluß auf die Ozonkonzentration = Stratospheric circulation over the Arctic and its influence on ozone concentration. - 1.2.5 Arktischer Dunst und troposphärische Spurenstoffe = Arctic haze and tropospheric trace matter. - 1.2.6 Modellierung von Klimaprozessen der arktischen Tropo- und Stratosphäre = Modelling of climatic processes in the Arctic troposphere and stratosphere. - 1.2.7 Niederfrequente Variabilität der atmosphärischen Zirkulation in polaren Breiten = Low frequency variability of atmospheric eirculation in polar latitudes. - 1.3 PHYSIKALISCHER AUFBAU, MASSENHAUSHALT UND DYNAMIK VON SCHELF- UND INLANDEISEN = Physical structure, mass balance and dynamics of ice shelves and inland-ice. - 1.3.1 Zirkulation und Wassermassentransformation unter dem Filchner-Ronne-Schelfeis = Circulation and transformation of water masses under the Filchner-Ronne Ice Shelf. - 1.3.2 Die physikalischen Eigenschaften, der Massenhaushalt und das Bewegungsfeld des Filchner-Ronne- und des Ekström-Schelfeises = Physical properties, mass balance and dynamics of the Filchner-Ronne and Ekström Ice Shelves. - 1.3.3 Wechselwirkung zwischen Inlandeis und antarktischen Oasen am Beispiel der Schirmacheroase = Interaction between inland ice and Antarctic oases, e.g. at Schirmacher Oasis. - 1.3.4 Numerische Modellierung von Inlandeisen und Schelfeisen = Numerical modelling of inland-ice and ice shelves. - 1.3.5 Struktur, Massenhaushalt, Bewegung und Geschichte des Grönländischen Eisschildes = Structure, mass balance, dynamics and history of the Greenland Ice sheet. - 1.4 KLIMAGESCHICHTE AUS DEM EIS = Climate history derived from ice. - 1.4.1 Klimageschichte aus dem Eis Grönlands: Das Grönländische Eiskern-Projekt (GRIP) = Climate history from the Greenland Ice: The Greenland lce-core Project (GRIP). - 1.4.2 Nördgrönland-Traverse = North Greenland traverse. - 1.4.3 EPICA, Europäisches Eiskern-Programm in der Antarktis = EPICA, European Programme on Polar Ice Coring in the Antarctic. - 1.4.4 Bohrung Berkner Island, Antarktis = Drilling on Berkner lsland, Antarctica. - 2. MARINE ÖKOSYSTEME = Marine Ecosystems. - 2.1 ÖKOLOGIE UND ÖKOPHYSIOLOGIE EINZELNER ARTEN UND GRUPPEN = Ecology and ecophysiology of some species and groups. - 2.1.1 Struktur und Aktivität C-heterotropher Bakterien- und Pilzgesellschaften aus extremen Habitaten = Structures and activities of C-heterotrophic baeteria and fungi communities from extreme habitats. - 2.1.2 Autökologische Untersuchungen zum Planktonwachsturn und zur Planktonmortalität = Auto-ecologieal studies on plankton growth and mortality. - 2.1.3 Genotypische und phenotypische Variationen im Phytoplankton und Phylogenie der Diatomeen und Haptophyten = Genotype and phenotype variations in phytoplankton, and phylogeny of diatoms and haptophytes. - 2.1.4. Vergleiche physiologisch-biochemischer Anpassungen von Benthos- und Nektontieren in polaren und gemäßigten Regionen = Comparison of physiological-biochemieal adaptions of benthic and neotonic animals in polar and moderate regions. - 2.1.5 Ökologie polarer Makroalgen = Ecology of polar macro-algae. - 2.1.6 Lebenszyklen, Lebensstrategien und physiologische Anpassungen polarer Makroalgen und Evertebraten = Life cycles, life strategies and physiological adaptions of polar macro-algae and evertebrates. - 2.2 STRUKTUR UND ENTWICKLUNG MARINER LEBENSGEMEINSCHAFTEN = Structure and evolution of marine living communities. - 2.2.1 Meereis-Lebensgemeinschaften = Sea-ice communities. - 2.2.2 Pelagische Lebensgemeinschaften = Pelagic communities. - 2.2.3 Benthische Lebensgemeinschaften = Benthic communities. - 2.2.4 Biogeographische Zusammenhänge benthischer und planktischer Lebensgemeinschaften der Antarktis mit denen der Magellanregion = Biogeographical connections of benthic and planktonic communities of the Antarctic with those of the Magellan region. - .3 ÖKOLOGISCHE PROZESSE = Ecological processes. - 2.3.1 Nutzungseffizienz der photosynthetisch verwertbaren Unterwasserstrahlung durch das antarktische Phytoplankton = Utilization of the photosynthetically active underwater radiation by Antarctic phytoplankton. - 2.3.2 Messungen und Auswirkungen der UV-B Strahlung auf das Plankton, die Meereisgemeinschaften und die Makroalgen polarer Regionen = Measurements and effects of UV-B radiation on plankton, sea-ice communities, and macro-algae of polar regions. - 2.3.3 Direkte Effekte von CO2 auf das Plankton und deren Auswirkungen auf den marinen Kohlenstoffkreislauf = Direct effects of CO2 on plankton, and their influence on the marine carbon cycle. - 2.3.4 Physikalische und biologische Prozesse an Fronten des Südlichen Ozeans = Physical and biological processes at fronts of the Southern Ocean. - 2.3.5 Biogene Stoffkreisläufe und pelago-benthische Kopplung = Biogeneous cycles and pelago-benthic coupling. - 2.3.6 Energiefluß und Interaktionen in einem antarktischen Flachwasser-System = Energy flux and interactions in an Antarctic shallow water system. - 2.3.7 Robben, Pinguine und ihre Parasiten im Nahrungsnetz antarktischer Schelfgebiete = Seals, penguins and their parasites in the food web of Antarctic shelf areas. - 2.3.8 Biologische Dynamik des Auftriebssystems des Humboldt-Stroms und EI Niño-Einflüsse = Biological dynamics of the upwelling system of the Humboldt Current and influences of "EI N
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  • 51
    Call number: ZSP-SCAR-570-9
    In: National Antarctic Research Report to SCAR, No. 9
    Type of Medium: Series available for loan
    Pages: 34 Seiten
    ISSN: 0179-0072
    Series Statement: National Antarctic Research Report to SCAR 9
    Language: English
    Note: Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Members of Permanent Working Groups and Groups of Specialists of SCAR. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 1986 - October 1987. - II. Planned Activities, October 1987 - October 1988. - References. - Addenda to Former Reports. - Index of Activities.
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  • 52
    Call number: ZSP 292
    In: Freiberger Forschungshefte
    Type of Medium: Series available for loan
    Pages: 117 Seiten , Mit 93 Bildern und 17 Tabellen
    Edition: 1. Auflage
    Series Statement: Freiberger Forschungshefte : C 371: Geowissenschaften - Geologie
    Language: German
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  • 53
    Call number: ZSP-292-438
    In: Freiberger Forschungshefte, 438
    Type of Medium: Series available for loan
    Pages: 38 Seiten , Illustrationen
    Edition: 1. Auflage
    ISBN: 3-342-00952-7
    ISSN: 0071-9404
    Series Statement: Freiberger Forschungshefte : C 438 : Geowissenschaften - Geologie
    Language: German
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  • 54
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/19
    In: CRREL Report, 87-19
    Description / Table of Contents: The approximate heat balance integral method (HBIM) is extended to the case of a medium with variable properties such as snow. The case of linear variation of thermal conductivity was investigated. An alternative heat balance integral method (AHBIM) was developed. Both constant surface temperature and surface heat flux were considered. A comparison was made of the temperature distribution from the HBIM, AHBIM and an analytical method for the case of constant surface temperature. In general, results agree quite well with the analytical method for small values of dimensionless time τ, but the difference becomes more pronounced as τ increases. It was found that the AHBIM with a quadratic temperature profile gave a somewhat better result, especially when the value of the dimensionless distance η is small. For a specific property function of E(η) = eη, closed form solutions were obtained. The results, when compared with those from HBIM, AHBIM and the analytical method were found to agree exceptionally well with the analytical method, especially for large values of τ.
    Type of Medium: Series available for loan
    Pages: iv, 26 Seiten , Illustrationen
    Series Statement: CRREL Report 87-19
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Mathematical analysis Constant surface temperature Constant surface heat flux Comparison with exact solution Alternative method Conclusions and comments Literature cited Appendix A: Derivation of equation 25 Appendix B: Derivations of equations 37 and 40 Appendix C: Derivation of equations 37a and 40
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  • 55
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/20
    In: CRREL Report, 87-20
    Description / Table of Contents: The structure and salinity characteristics of saline ice slabs removed from ice sheets grown in an outdoor pool have been studied and related to the complex relative dielectric permittivity measured with free-space transmission techniques at 4.80 and 9.50 GHz. The saline ice closely simulated arctic sea ice in its structural and salinity characteristics, which were regularly monitored in a number of ice sheets grown during the winters of 1983-84 and 1984-85. In-situ transmission measurements at similar frequencies were also made on the ice sheets themselves using antennas located above and beneath the ice. The slab measurements were made during warming from -29° to -2°C on slabs grown during the winter of 1983-84 (4.75 GHz) and during a warming and cooling cycle over a slightly larger temperature range on slabs grown during the winter of 1984-85 (4.80 and 9.50 GHz).
    Type of Medium: Series available for loan
    Pages: v, 41 Seiten , Illustrationen
    Series Statement: CRREL Report 87-20
    Language: English
    Note: CONTENTS Abstract Preface Part I - Structural properties Introduction Experimental setup Analytical techniques Results and discussion 1983-84 experiments 1984-85 experiments Conclusions and recommendations Part Il - Microwave properties Introduction Measurement techniques Results 1983-84 experiments 1984-85 experiments 1984-85 in-situ experiments Discussion Comparison of data Analytical modeling Summary and conclusions Literature cited Appendix A: Dielectric mixing model of sea ice
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  • 56
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/21
    In: CRREL Report, 87-21
    Description / Table of Contents: The author measured time series of longitudinal (u) and vertical (w) velocity and temperature (t) and humidity (q) fluctuations with fast-responding sensors in the near-neutrally stable surface layer over a snow-covered field. These series yielded individual spectra and u-w, w-t, w-q and t-q cospectra, phase spectra and coherence spectra for nondimensional frequencies (fz/U) from roughly 0.001 to 10. With the exception of the u-w cospectra, all the spectra and cospectra displayed the expected dependence on frequency in an inertial or inertial-convective subrange. All, however, contained significantly more energy at low frequency than the Kansas neutral-stability spectra and cospectra. This excess low-frequency energy and the erratic behavior of the u-w cospectra imply that forested hills bordering the site on two sides were producing disturbances in the flow field at scales roughly equal to the height of the hills, 100 m. The phase and coherence spectra suggest that internal gravity waves were also frequently present, since the atmospheric boundary layer generally had slightly stable stratification. Consequently, at this complex site, turbulence alone determines the spectra and cospectra at high frequency; at low frequency the spectra and cospectra reflect a combination of topographically generated turbulence and internal waves. From the measured temperature and humidity spectra and the t-q cospectra, the author computed refractive index spectra for light of 0.55-micrometer and millimeter wavelengths. The refractive index spectra had shapes like the other scalar spectra: excess energy at low frequency and an inertial-convective subrange at high frequency.
    Type of Medium: Series available for loan
    Pages: v, 50 Seiten , Illustrationen
    Series Statement: CRREL Report 87-21
    Language: English
    Note: CONTENTS Abstract Preface Introduction Measurements Spectra u and w velocity spectra Temperature and humidity spectra Inertial-dissipation estimates Cospectra u-w cospectra w-t and w-q cospectra t-q cospectra Refractive index spectra Conclusions Literature cited
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  • 57
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/22
    In: CRREL Report, 87-22
    Description / Table of Contents: This review discusses problems associated with the anomalous temperature-density relations of water. It covers a) onset of convection, b) temperature structure and natural convective heat transfer, and c) laminar forced convective heat transfer in the water/ice system. The onset of convection in a water/ice system was found to dependent on thermal boundary conditions, not a constant value as in the classical fluids that have a monotonic temperature-density relationship. The water/ice system also exhibits a unique temperature distribution in the melt layer immediately after the critical Rayleigh number is exceeded and soon after it establishes a more or less constant temperature region progressively deepening as the melt layer grows. The constant temperature is approximately 3.2°C for water layers formed from above but varies for melt layers from below. The heat flux across the water/ice interface was found to be a weak power function and to increase linearly with temperature for melted layers from above and below, respectively.
    Type of Medium: Series available for loan
    Pages: vi, 43 Seiten , Illustrationen
    Series Statement: CRREL Report 87-22
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Analytical studies on the onset of convection in a horizontal water layer Experimental studies on the onset of convection in a circular horizontal melt layer Temperature structure and heat transfer In a horizontal layer In a circular horizontal melt layer pHeat transfer studies in nonplanar geometries Forced convective heat transfer over a melting surface Discussion and conclusions Onset of convection Temperature structure and natural convective heat transfer Laminar forced convective heat transfer Literature cited
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  • 58
    Call number: ZSP-201-87/2
    In: CRREL Report, 87-2
    Description / Table of Contents: This is the third in a series of four reports on the laboratory and field testing of a number of road and airfield subgrades, covering the laboratory repeated-load triaxial testing of five soils in the frozen and thawed states and analysis of the resulting resilient modulus measurements. The laboratory testing procedures allow simulation of the gradual increase in stiffnessfound in frost-susceptible soils after thawing. The resilient modulus is expressed in a nonlinear model in terms of the applied stresses, the soil moisture tension level (for unfrozen soil), the unfrozen water content (for frozen soil) and the dry density. The resilient modulus is about 10 GPa for the frozen material at temperatures in the range of -5° to -8° C. The decrease in modulus with increasing temperature was well-modeled in terms of the unfrozen water content. Upon thaw, the modulus dropped to about 100 MPa and generally increased with increasing confining stress and decreased with increasing principal stress ratio. The modulus also increased with the soil moisture tension level. The resilient Poisson's ratio did not appear to be a systematic function of any of the test variables.
    Type of Medium: Series available for loan
    Pages: iii, 36 Seiten , Illustrationen
    Series Statement: CRREL Report 87-2
    Language: English
    Note: CONTENTS Abstract Preface Introduction Test sections and materials Specimen preparation Test soils Asphalt concrete Laboratory testing Soil testing Waveforms of applied stress Asphalt concrete Data reduction and analysis Soil Asphalt concrete Results and discussion General Resilient modulus Summary Conclusions Literature cited Appendix A: Soil moisture tension versus water content for several test soils Appendix B: Tabulated results for all tests on frozen and thawed soils
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  • 59
    Call number: AWI P7-20-93383
    In: SPRI Review, 86
    Type of Medium: Series available for loan
    Pages: 26 Seiten , Illustrationen
    Series Statement: SPRI Review 86
    Language: English
    Note: Contents Report from the Director Research overviews Sea ice studies Glacier geophysics Remote sensing Northern and social affairs Library and information service Aquisitions Archives and museum Teaching, lectures and colloquia International activities Research and visiting scholars Friends of the Polar Institute Gino Watkins Memorial Fund Research Abstracts Sea ice Glacier geophysics Social sciences Institute staff Publications
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  • 60
    Monograph available for loan
    Monograph available for loan
    Cambridge : Cambridge University Press
    Call number: PIK N 630-13-0084 ; AWI Bio-22-20909
    Type of Medium: Monograph available for loan
    Pages: XII, 178 Seiten , Illustrationen
    ISBN: 0-521-30868-2 , 0-521-54409-2
    Language: English
    Note: Contents Preface Acknowledgements 1 Introduction Terms and abbreviations 2 The biogeographlcal setting Geology, physiography, and surface materials The structural framework Pleistocene geology Bioclimates Arctic and its three subzones Subarctic zone Boreal zone Eastern temperate zone Grassland zone Pacific and Cordilleran zones 3 Autecology and pollen representation Introduction Transcontinental, primarily boreal taxa Eastern, primarily temperate taxa Pacific-Cordilleran taxa Arctic taxa Modern regional pollen spectra The Western Interior The eastern plains transect The Pacific-Cordilleran transect General comments on the modern pollen spectra 4 Full-glacial refugla The southern refugia Pacific-Cordilleran refugia Interior plains and eastern region The Beringian refugia 5 Eastern Canada-fossil record and reconstruction Introduction The late glacial - 12,700 to 10,000 yr BP Southern Quebec and New Brunswick Maritime Canada The Great Lakes Basin Vegetation reconstruction The Holocene - 10,000 yr BP to the present Southern Quebec and New Brunswick The Maritimes, Labrador, and Northern Quebec The Great Lakes Vegetation reconstruction Boreal region 6 The Western Interior Sites near the forest-grassland transition Sites within the modern boreal forest Sites near the modern forest-tundra boundary 7 Pacific-Cordilleran region Southern Pacific zone Southern Cordilleran zone Northern Pacific zone Northern Cordilleran zone 8 Vegetation reconstruction and palaeoenvironments Introduction Origins and history Eastern temperate forests Boreal forest Grasslands and parklands Pacific-Cordilleran complex Tundra (arctic) Palaeoenvironmental controls Climate The Milankovitch model Full-glacial conditions Late-glacial and Holocene Fire Pathogens Paludification Problems for the future Climate disequilibrium Spatial resolution Pollen source area Concluding comments Appendix References Index
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  • 61
    Call number: AWI A6-92-0280 ; 5/M 08.0207
    In: International geophysics series, Vol. 40
    Type of Medium: Monograph non-lending collection
    Pages: X, 489 Seiten , Illustrationen
    ISBN: 0120585766
    Series Statement: International geophysics series 40
    Classification:
    Meteorology and Climatology
    Language: English
    Note: Contents: Preface. - Acknowledgements. - Chapter 1 Introduction. - 1.1 The Static Structure of the Middle Atmosphere. - 1.2 Zonal Mean Temperature and Wind Distributions. - 1.3 Composition of the Middle Atmosphere. - 1.4 The Vertical Distribution of Eddy Amplitudes. - 1.5 Observational Techniques. - References. - Chapter 2 Radiative Processes and Remote Sounding. - 2.1 Introduction. - 2.2 Fundamentals. - 2.3 Gaseous Absorption Spectra. - 2.4 Transmission Functions. - 2.5 Infrared Radiative Exchange and Radiative Damping. - 2.6 Departure from Local Thermodynamic Equilibrium. - 2.7 Absorption of Solar Radiation. - 2.8 Radiative Equilibrium Temperature and Heating-Rate Distributions. - 2.9 Remote Sounding. - References. - Chapter 3 Basic Dynamics. - 3.1 Introduction. - 3.2 The Beta-Plane Approximation and Quasi-Geostrophic Theory. - 3.3 The Eulerian-Mean Equations. - 3.4 Linearized Disturbances to Zonal-Mean Flows. - 3.5 The Transformed Eulerian-Mean Equations. - 3.6 The Generalized Eliassen-Palm Theorem and the Charney-Drazin Nonacceleration Theorem. - 3.7 The Lagrangian Approach. - 3.8 Isentropic Coordinates. - 3.9 The Zonal-Mean Equations in Isentropic Coordinates. - Appendix 3A. Derivation of Some Equations in Isentropic Coordinates. - Appendix 3B. Boundary Conditions on the Residual Circulation. - References. - Chapter 4 Linear Wave Theory. - 4.1 Introduction and Classification of Wave Types. - 4.2 Wave Disturbances to a Resting Spherical Atmosphere. - 4.3 Atmospheric Thermal Tides. - 4.4 Free Traveling Planetary Waves. - 4.5 Forced Planetary Waves. - 4.6 Gravity Waves. - 4.7 Equatorial Waves. - Appendix 4A. Ray-Tracing Theory and Wave Action in a Slowly Varying Medium. - References. - Chapter 5 Extratropical Planetary-Scale Circulations. - 5.1 Introduction. - 5.2 The Observed Annual Cycle. - 5.3 Detailed Linear Models of Stationary Planetary Waves in the Middle Atmosphere. - 5.4 Detailed Linear Models of Free Traveling Planetary Waves in the Atmosphere. - 5.5 Barotropic and Baroclinic Instability. - 5.6 Planetary-Wave Critical Layers. - References. - Chapter 6 Stratospheric Sudden Warmings. - 6.1 Introduction. - 6.2 Observed Features of Sudden Warmings. - 6.3 Theoretical Modeling of Sudden Warmings. - 6.4 Conclusions. - References. - Chapter 7 The Extratropical Zonal-Mean Circulation. - 7.1 Introduction. - 7.2 Some Simple Zonally Averaged Models of the Middle Atmosphere. - 7.3 The Upper Mesosphere. - 7.4 The Winter Polar Stratosphere. - 7. 5 Interpretation and Generalization. - References. - Chapter 8 Equatorial Circulations. - 8.1 Introduction. - 8.2 The Observed Structure of the Equatorial Quasi-Biennial Oscillation. - 8.3 Theory of the Quasi-Biennial Oscillation. - 8.4 Observed Structure of the Equatorial Semiannual Oscillations. - 8.5 Dynamics of the Equatorial Semiannual Oscillations. - 8.6 Inertial Instability in the Equatorial Zone. - References. - Chapter 9 Tracer Transport in the Middle Atmosphere. - 9.1 Introduction: Types of Tracers. - 9.2 Long-Lived Chemical Tracers. - 9.3 Transport in the Meridional Plane. - 9.4 Formulations of Eddy and Mean-Flow Transport. - 9.5 Dispersive Wave Transport: Irreversible Mixing of Tracers. - 9.6 Troposphere-Stratosphere Exchange. - 9.7 Transport Modeling. - Appendix 9A. The Transformed Eulerian-Mean Transport for Small-Arnplitude Eddies. - References. - Chapter 10 The Ozone Layer. - 10.1 Introduction. - 10.2 The Climatology of Ozone. - 10.3 Elementary Aspects of Photochemical Modeling. - 10.4 Photochemistry of Ozone: Catalytic Cycles. - 10.5 Models of the Natural and Perturbed Ozone Layer. - Appendix 10A. The Continuity Equation for Chemical Species. - References. - Chapter 11 General Circulation Modeling. - 11.1 Models of the Lower Stratosphere. - 11.2 The GFDL SKYHI Model. - 11.3 Forecasting of Sudden Stratospheric Warmings. - 11.4 Transport Modeling. - References. - Chapter 12 Interaction between the Middle Atmosphere and the Lower Atmosphere. - 12.1 Introduction. - 12.2 Radiative Links: Deductions from Simple Models. - 12.3 Radiative Links: Deductions from GCMs. - 12.4 Dynamical Links: Vertically Propagating Planetary Waves. - 12.5 Interannual Variability in the Stratosphere. - References. - Bibliography. - Index.
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  • 62
    Monograph available for loan
    Monograph available for loan
    Houston, Tex. : Circum-Pacific Council for Energy and Mineral Resources
    Associated volumes
    Call number: AWI G9-88-0293
    In: Earth science series, Volume 5B
    Type of Medium: Monograph available for loan
    Pages: IX, 253 Seiten , Illustrationen
    ISBN: 0933687052
    Series Statement: Earth science series 5B
    Language: English
    Note: CONTENTS Geology and Structure of the Ross Sea Region / F. J. Davey Recording and Processing Procedures for Multichannel Seismic-Reflection Data Collected in the Western Ross Sea, Antarctica / S. V. Dadisman, H. F. Ryan, D. M. Mann Seismic Stratigraphy and Structure of the Victoria Land Basin, Western Ross Sea, Antarctica / A. K. Cooper, F. J. Davey, J. C. Behrendt Extent and Nature of Ross Sea Unconformity in the Western Ross Sea, Antarctica / H. A. Karl, E. Reimnitz, B. D. Edwards Structure of Extensionally Rifted Crust Beneath the Western Ross Sea and lselin Bank, Antarctica, from Sonobuoy Seismic Data / A. K. Cooper, F. J. Davey, G. R. Cochrane Gravity Studies of the Victoria Land Basin and lselin Bank / F. J. Davey, A. K. Cooper The Antarctic Continental Margin Magnetic Gradiometer Data: Suppression of Time Variations / R. O. Hansen, J. R. Childs Interpretation of Marine Magnetic Gradiometer and Multichannel Seismic-Reflection Observations over the Western Ross Sea Shelf, Antarctica / J.C. Behrendt, A. K. Cooper, A. Yuan Heat Flow and Tectonics in the Western Ross Sea, Antarctica / D. K. Blackman, R. P. Von Herzen, L. A. Lawver Geology and Physical Properties of Ross Sea, Antarctica, Continental Shelf Sediment / B. D. Edwards, H. J. Lee, H. A. Karl, E. Reimnitz, L. A. Timothy Hydrocarbon Geochemistry of Sediments Offshore from Antarctica / J. B. Rapp, K. A. Kvenvolden, M. Golan-Bae Diatoms from the 1984 USGS Antarctic Cruise in the Ross Sea / J. A. Barron, L. H. Burckle Petrography of Rock Samples Dredged from lselin Bank, Ross Sea, Antarctica / F. L. Wong, P. J. Barrett, J. Gamble, D. G. Howell
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  • 63
    Monograph available for loan
    Monograph available for loan
    Cambridge : SCAR
    Call number: AWI P6-88-0329 ; AWI P6-89-0396
    Type of Medium: Monograph available for loan
    Pages: VI, 146 S. , zahlr. Ill., graph. Darst., Kt.
    ISBN: 019854216X
    Language: English
    Note: Contents: Introduction / Professor James H. Zumberge. - 1. First Impressions and the Setting. - 2. Why Are Scientists Interested in the Antarctic?. - 3. First Studies of Antarctica to the Treaty. - 4. Logistics, Transportation, and Telecommunications. - 5. Geodesy and Cartography in Antarctica. - 6. Geology and Solid-Earth Geophysics. - 7. "Land of Mountainous Ice". - 8. Cold Waters Run Deep. - 9. Antarctic Meteorology. - 10. Cold Climates and Frozen Atmospheres. - 11. The Upper Atmosphere from Antarctica. - 12. The Living Edge of Antarctica. - 13. Hostile Environment for Mankind. - 14. Environmental Impact of Man. - 15. Freedom of Exchange of Antarctic Scientific Information. - 16. A Continent for Collaboration. - Appendix 1: SCAR Publications. - Appendix 2: Antarctic Treaty. - Acknowledgements. - Index.
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  • 64
    Series available for loan
    Series available for loan
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-33
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 204 S. : Ill., graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 33
    Language: German
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  • 65
    Series available for loan
    Series available for loan
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-38
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 110 S. : graph. Darst.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 38
    Language: English
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  • 66
    Monograph available for loan
    Monograph available for loan
    Chichester [u.a.] : Wiley
    Call number: PIK M 370-92-0667 ; AWI A13-92-0307
    Type of Medium: Monograph available for loan
    Pages: XV, 217 S. , Ill., graph. Darst.
    ISBN: 0471914622
    Series Statement: Research and developments in climate and climatology
    Language: English
    Note: Contents: Preface. - Acknowledgements. - Chapter 1 Climate. - 1.1 The components of climate. - 1.2 Climate modelling and climate prediction. - 1.3 Climate changes and human perception. - 1.4 Feedback mechanisms in climate. - 1.4.1 The ice-albedo feedback mechanism. - 1.4.2 The water vapour “greenhouse”. - 1.4.3 Cloud feedbacks. - 1.4.4 Combining feedback effects. - 1.5 Perturbations on the climate system. - 1.5.1 External causes of climatic change. - 1.5.2 Internal causes of climatic change. - 1.6 Range of questions for climate modelling. - Recommended reading. - Chapter 2 A history of and introduction to climate models. - 2.1 Introducing climate modelling. - 2.2 Types of climate models. - 2.2.1 Energy balance climate models. - 2.2.2 One-dimensional radiative-convective climate models. - 2.2.3 Two-dimensional climate models. - 2.2.4 General circulation climate models. - 2.3 History of climate modelling. - 2.4 Sensitivity of climate models. - 2.5 Parameterization of climatic processes. - 2.6 Simulation of the full, interacting climate system: one goal of modelling. - Chapter 3 Energy balance models. - 3.1 Balancing the planetary radiation budget. - 3.2 The structure of energy balance models. - 3.3 Parameterizing the climate system for energy balance models. - 3.4 A BASIC energy balance climate model. - 3.5 Experiments with energy balance models. - 3.5.1 Explicit modelling of the cryosphere. - 3.6 Box models — another form of energy balance model. - 3.6.1 A simple box model of the ocean-atmosphere. - 3.6.2 A coupled atmosphere, land and ocean energy balance box model. - 3.7 Energy balance models: deceptively simple models. - Recommended reading. - Chapter 4 Radiative-convective models. - 4.1 The concept of a radiative-convective climate model. - 4.2 The structure of global radiative-convective models. - 4.3 Radiation computation. - 4.3.1 Shortwave radiation. - 4.3.2 Longwave radiation. - 4.3.3 Eleat balance at the ground. - 4.4 Convective adjustment. - 4.5 Sensitivity experiments with radiative-convective models. - 4.6 Development of radiative-convective models. - 4.6.1 Cloud amount and height predicted from ‘convection’. - 4.6.2 A water vapour transport model. - 4.7 Radiation: the driver of climate. - Recommended reading. - Chapter 5 Two-dimensional models. - 5.1 Why two-dimensional models?. - 5.2 Two-dimensional statistical dynamical climate models. - 5.3 Convection, cloud cover and precipitation in two-dimensional statistical dynamical models. - 5.4 Radiation and surface characterization in two-dimensional statistical dynamical models. - 5.4.1 Radiation. - 5.4.2 Surface characterization. - 5.5 Intercomparison of a two-and a three-dimensional model. - 5.6 Other types of two-dimensional models. - 5.6.1 An upgraded energy balance model. - 5.6.2 A severely truncated spectral general circulation climate model. - 5.7 Why are some climate modellers Flatlanders?. - Recommended reading. - Chapter 6 General circulation climate models. - 6.1 The structure of general circulation climate models. - 6.2 Dynamics in general circulation climate models. - 6.2.1 Cartesian (or rectangular) grid general circulation climate models. - 6.2.2 Spectral general circulation climate models. - 6.3 Physics in general circulation climate models. - 6.3.1 Radiative transfer. - 6.3.2 Boundary layer. - 6.3.3 Surface parameterization. - 6.3.4 Convection. - 6.3.5 Large scale rainfall. - 6.4 Including ‘other’ elements in general circulation climate models. - 6.4.1 Cloud prediction. - 6.4.2 Modelling the cryosphere. - 6.5 Land surface parameterization in general circulation climate models. - 6.6 Coupled ocean-atmosphere general circulation climate models. - 6.7 Future climate projects and their importance to general circulation climate models. - 6.8 Epilogue. - Recommended reading. - Appendices. - A. Glossary. - B. Climate models: examples of simple microcomputer software. - I. Daisyworld: a simple biospheric feedback climate model. - II. Modelling the climatic impact of anthropogenerated albedo change. - III. An energy balance climate model (EBM). - IV. Carbon dioxide feedback using a simple ocean model. - General Bibliography. - Index.
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  • 67
    Series available for loan
    Series available for loan
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-39
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 259 S. : graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 39
    Language: English
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  • 68
    Call number: 20/MOP 47175 ; AWI A5-96-0564
    In: Landolt-Börnstein Zahlenwerte und Funktionen aus Naturwissenschaft und Technik
    Type of Medium: Monograph available for loan
    Pages: XI, 188 S.
    ISBN: 3540174737
    Classification:
    E.5.
    Language: German
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  • 69
    Call number: 20/MOP 46712 ; AWI A5-93-0054 ; AWI A5-96-0563
    In: Landolt-Börnstein Zahlenwerte und Funktionen aus Naturwissenschaft und Technik
    Type of Medium: Monograph available for loan
    Pages: XII, 491 S.
    ISBN: 3540166106
    Classification:
    E.5.
    Language: German
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