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  • 1
    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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  • 2
    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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  • 3
    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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  • 4
    Call number: AWI Bio-22-94840
    Description / Table of Contents: Vegetation change at high latitudes is one of the central issues nowadays with respect to ongoing climate changes and triggered potential feedback. At high latitude ecosystems, the expected changes include boreal treeline advance, compositional, phenological, physiological (plants), biomass (phytomass) and productivity changes. However, the rate and the extent of the changes under climate change are yet poorly understood and projections are necessary for effective adaptive strategies and forehanded minimisation of the possible negative feedbacks. The vegetation itself and environmental conditions, which are playing a great role in its development and distribution are diverse throughout the Subarctic to the Arctic. Among the least investigated areas is central Chukotka in North-Eastern Siberia, Russia. Chukotka has mountainous terrain and a wide variety of vegetation types on the gradient from treeless tundra to northern taiga forests. The treeline there in contrast to subarctic North America and north-western and central Siberia is represented by a deciduous conifer, Larix cajanderi Mayr. The vegetation varies from prostrate lichen Dryas octopetala L. tundra to open graminoid (hummock and non-hummock) tundra to tall Pinus pumila (Pall.) Regel shrublands to sparse and dense larch forests. Hence, this thesis presents investigations on recent compositional and above-ground biomass (AGB) changes, as well as potential future changes in AGB in central Chukotka. The aim is to assess how tundra-taiga vegetation develops under changing climate conditions particularly in Fareast Russia, central Chukotka. Therefore, three main research questions were considered: 1) What changes in vegetation composition have recently occurred in central Chukotka? 2) How have the above-ground biomass AGB rates and distribution changed in central Chukotka? 3) What are the spatial dynamics and rates of tree AGB change in the upcoming millennia in the northern tundra-taiga of central Chukotka? Remote sensing provides information on the spatial and temporal variability of vegetation. I used Landsat satellite data together with field data (foliage projective cover and AGB) from two expeditions in 2016 and 2018 to Chukotka to upscale vegetation types and AGB for the study area. More specifically, I used Landsat spectral indices (Normalised Difference Vegetation Index (NDVI), Normalised Difference Water Index (NDWI) and Normalised Difference Snow Index (NDSI)) and constrained ordination (Redundancy analysis, RDA) for further k-means-based land-cover classification and general additive model (GAM)-based AGB maps for 2000/2001/2002 and 2016/2017. I also used Tandem-X DEM data for a topographical correction of the Landsat satellite data and to derive slope, aspect, and Topographical Wetness Index (TWI) data for forecasting AGB. Firstly, in 2016, taxa-specific projective cover data were collected during a Russian-German expedition. I processed the field data and coupled them with Landsat spectral Indices in the RDA model that was used for k-means classification. I could establish four meaningful land-cover classes: (1) larch closed-canopy forest, (2) forest tundra and shrub tundra, (3) graminoid tundra and (4) prostrate herb tundra and barren areas, and accordingly, I produced the land cover maps for 2000/2001/2002 and 2016/20017. Changes in land-cover classes between the beginning of the century (2000/2001/2002) and the present time (2016/2017) were estimated and interpreted as recent compositional changes in central Chukotka. The transition from graminoid tundra to forest tundra and shrub tundra was interpreted as shrubification and amounts to a 20% area increase in the tundra-taiga zone and 40% area increase in the northern taiga. Major contributors of shrubification are alder, dwarf birch and some species of the heather family. Land-cover change from the forest tundra and shrub tundra class to the larch closed-canopy forest class is interpreted as tree infilling and is notable in the northern taiga. We find almost no land-cover changes in the present treeless tundra. Secondly, total AGB state and change were investigated for the same areas. In addition to the total vegetation AGB, I provided estimations for the different taxa present at the field sites. As an outcome, AGB in the study region of central Chukotka ranged from 0 kg m-2 at barren areas to 16 kg m-2 in closed-canopy forests with the larch trees contributing the highest. A comparison of changes in AGB within the investigated period from 2000 to 2016 shows that the greatest changes (up to 1.25 kg m 2 yr 1) occurred in the northern taiga and in areas where land cover changed to larch closed-canopy forest. Our estimations indicate a general increase in total AGB throughout the investigated tundra-taiga and northern taiga, whereas the tundra showed no evidence of change in AGB within the 15 years from 2002 to 2017. In the third manuscript, potential future AGB changes were estimated based on the results of simulations of the individual-based spatially explicit vegetation model LAVESI using different climate scenarios, depending on Representative Concentration Pathways (RCPs) RCP 2.6, RCP 4.5 and RCP 8.5 with or without cooling after 2300 CE. LAVESI-based AGB was simulated for the current state until 3000 CE for the northern tundra-taiga study area for larch species because we expect the most notable changes to occur will be associated with forest expansion in the treeline ecotone. The spatial distribution and current state of tree AGB was validated against AGB field data, AGB extracted from Landsat satellite data and a high spatial resolution image with distinctive trees visible. The simulation results are indicating differences in tree AGB dynamics plot wise, depending on the distance to the current treeline. The simulated tree AGB dynamics are in concordance with fundamental ecological (emigrational and successional) processes: tree stand formation in simulated results starts with seed dispersion, tree stand establishment, tree stand densification and episodic thinning. Our results suggest mostly densification of existing tree stands in the study region within the current century in the study region and a lagged forest expansion (up to 39% of total area in the RCP 8.5) under all considered climate scenarios without cooling in different local areas depending on the closeness to the current treeline. In scenarios with cooling air temperature after 2300 CE, forests stopped expanding at 2300 CE (up to 10%, RCP 8.5) and then gradually retreated to their pre-21st century position. The average tree AGB rates of increase are the strongest in the first 300 years of the 21st century. The rates depend on the RCP scenario, where the highest are as expected under RCP 8.5. Overall, this interdisciplinary thesis shows a successful integration of field data, satellite data and modelling for tracking recent and predicting future vegetation changes in mountainous subarctic regions. The obtained results are unique for the focus area in central Chukotka and overall, for mountainous high latitude ecosystems.
    Type of Medium: Dissertations
    Pages: 149 Seiten , Illustrationen, Diagramme
    Language: English
    Note: Dissertation, Potsdam, Universität Potsdam, 2022 , Contents Abstract Zusammenfassung Contents Abbreviations Motivation 1 Introduction 1.1 Scientific background 1.2 Study region 1.3 Aims and objectives 2 Materials and methods 3.1 Section 4 - Strong shrub expansion in tundra-taiga, tree infilling in taiga and stable tundra in central Chukotka (north-eastern Siberia) between 2000 and 2017 3.2 Section 5 - Recent above-ground biomass changes in central Chukotka (NE Siberia) combining field-sampling and remote sensing 3.3 Section 6 - Future spatially explicit tree above-ground biomass trajectories revealed for a mountainous treeline ecotone using the individual-based model LAVESI 4 Strong shrub expansion in tundra-taiga, tree infilling in taiga and stable tundra in central Chukotka (north-eastern Siberia) between 2000 and 2017 Abstract 1 Introduction 2 Materials and methods 2.1 Field data collection and processing 2.2 Landsat data, pre-processing and spectral indices processing 2.3 Redundancy analysis (RDA) and classification approaches 3 Results 3.1 General characteristics of the vegetation field data 3.2 Relating field data to Landsat spectral indices in the RDA model 3.3 Land-cover classification 3.4 Land-cover change between 2000 and 2017 4 Discussion 4.1 Dataset limitations and optimisation 4.2 Vegetation changes from 2000/2001/2002 to 2016/2017 Conclusions Acknowledgements Data availability statement References Appendix A. Detailed description of Landsat acquisitions Appendix B. MODIS NDVI time series from 2000 to 2018 Appendix C. Landsat Indices values for each analysed vegetation site Appendix D. Fuzzy c-means classification for interpretation of uncertainties for land-cover mapping Appendix E. Validation of land-cover maps Appendix F. K-means classification results Appendix G. Heterogeneity of natural landscapes and mixed pixels of satellite data Appendix H. Distribution of land-cover classes and their changes by study area 5 Recent above-ground biomass changes in central Chukotka (NE Siberia) combining field-sampling and remote sensing Abstract 1 Introduction 2 Materials and methods 2.1 Study region and field surveys 2.2 Above-ground biomass upscaling and change derivation 3 Results 3.1 Vegetation composition and above-ground biomass 3.2 Upscaling above-ground biomass using GAM 3.3 Change of above-ground biomass between 2000 and 2017 in the four focus areas 4 Discussion 4.1 Recent state of above-ground biomass at the field sites 4.2 Recent state of above-ground biomass upscaled for central Chukotka 4.3 Change in above-ground biomass within the investigated 15–16 years in central Chukotka 5 Conclusions Data availability statement Author contributions Competing interests Acknowledgements References Appendix A. Sampling and above-ground biomass (AGB) calculation protocol for field data 6 Future spatially explicit tree above-ground biomass trajectories revealed for a mountainous treeline ecotone using the individual-based model LAVESI Abstract 1 Introduction 2 Materials and methods 2.1 Study region 2.2 LAVESI model setup, parameterisation, and validation 2.2.4 LAVESI simulation setup for this study 2.2.5 Validation of the model’s performance 3 Results 3.1 Dynamics and spatial distribution changes of tree above-ground-biomass 3.2 Spatial and temporal validation of the contemporary larch AGB 4 Discussion 4.1 Future dynamics of tree AGB at a plot level 4.2 What are the future dynamics of tree AGB at the landscape level? 5 Conclusions Data availability Acknowledgements References Appendix B. Permutation tests for tree presence versus topographical parameters Appendix C. Landsat-based, field, and simulated estimations of larch above-ground biomass (AGB). 7 Synthesis 7.1 What changes in vegetation composition have happened from 2000 to 2017 in central Chukotka? 7.2 How have the above-ground biomass (AGB) distribution and rates changed from 2000 to 2017 in central Chukotka? 7.3 What are the spatial dynamics and rates of tree AGB change in the upcoming centuries in the northern tundra-taiga from 2020 to 3000 CE on the plot level and landscape level? References Acknowledgements
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  • 5
    Call number: AWI G5-22-94845
    In: Developments in paleoenvironmental research, 22
    Description / Table of Contents: This book addresses the main enigmas of Easter Island’s (Rapa Nui, in the Polynesian language) prehistory from the time of initial settlement to European contact with a multidisciplinary perspective. The main topics include: (i) the time of first settlement and the origin of the first settlers; (ii) the main features of prehistoric Rapanui culture and their changes; (iii) the deforestation of the island and its timing and causes; (iv) the extinction of the indigenous biota, (v) the occurrence of climatic shifts and their potential effects on socioecological trends; (vi) the evidence for a cultural and demographic collapse before European contact; and (vii) the influence of Europeans on prehistoric Rapanui society. The book is subdivided into thematic sections and each chapter is written by renowned specialists in disciplines such as archaeology, anthropology, paleoecology, ethnography, linguistics, ethnobotany, phylogenetics/phylogeography and history. Contributors have been invited to provide an open and objective vision that includes as many views as possible on the topics considered. In this way, the readers may be able to compare different of points of view and make their own interpretations on each of the subjects considered. The book is intended for a wide audience including graduate students, advanced undergraduate students, university teachers and researchers interested in the subject. Given its multidisciplinary character and the topics included, the book is suitable for students and researchers from a wide range of disciplines and interests.
    Type of Medium: Monograph available for loan
    Pages: XII, 628 Seiten , Illustrationen
    ISBN: 978-3-030-91126-3
    Series Statement: Developments in paleoenvironmental research 22
    Language: English
    Note: Contents: Introduction / Valentí Rull, Christopher Stevenson Transpacific Voyaging and Settlement Ex Oriente Lux: Amerindian Seafaring and Easter Island Contact Revisited / Atholl Anderson Commensals/Domesticates on Rapa Nui: What Can Their Phylogeographic Patterns Tell Us About the Discovery and Settlement of the Island? / Vicki A. Thomson, Michael Herrera, Jeremy J. Austin Sweet Potato on Rapa Nui: Insights from a Monographic Study of the Genus Ipomoea / Pablo Muñoz-Rodríguez, John R. I. Wood, Robert W. Scotland Pre-European Contact Sweet Potato (Ipomoea batatas) at Rapa Nui: Macrobotanical Evidence from Recent Excavations in Rano Raraku Quarry, Rapa Nui / Jo Anne Van Tilburg, Jennifer M. Huebert, Sarah C. Sherwood, Casey R. Barrier Anakena Re-visited: New Perspectives on Old Problems at Anakena, Rapa Nui / Paul Wallin, Helene Martinsson-Wallin The Ancient Rapanui Culture A Behavioral Assessment of Refuge Caves (ana kionga) on Rapa Nui / Christopher Stevenson, José Miguel Ramrez-Aliaga, Juan Gongalves Borrega Vinapū Area Re-visited / Helene Martinsson-Wallin Undelivered Moai or Unidentified Monument? / Nicolas Cauwe, Morgan De Dapper Platforms in Motion: A Genealogical Architecture / Nicolas Cauwe Climatic and Environmental Change Climatology of Rapa Nui (Isla de Pascua, Easter Island) / Raymond S. Bradley, William J. D’Andrea, Henry F. Diaz, Liang Ning Prehistoric Paleoecology of Easter Island / Valentí Rull Geological and Climatic Features, Processes and Interplay Determining the Human Occupation and Habitation of Easter Island / Alberto Sáez, Olga Margalef, Laura Becerril, Christian Herrera, James Goff, Sergi Pla-Rabes et al. Deforestation and Extinctions The Flora and Vegetation of Easter Island: Past and Present / Georg Zizka, Alexander Zizka Palms for the Archaeologist / Daniel W. Ingersoll Jr., Kathleen B. Ingersoll, Fred W. Stauffer Spatio-Temporal Patterns of Deforestation, Settlement, and Land Use on Easter Island Prior to European Arrivals / Peter Steiglechner, Agostino Merico Economic Causes and Consequences of Deforestation on Easter Island / James A. Brander Palm Forest to Gardens and Grassland: A Study of Environmental and Geomorphological Changes of the Te Niu, Rapa Nui Landscape / Joan A. Wozniak Collapse or Resilience? Environmental Change and Cultural Continuity: Extraordinary Achievements of the Rapanui Society after Deforestation / Andreas Mieth, Annette Kühlem, Burkhard Vogt, Hans-Rudolf Bork Ecology Limits Population, But Interaction with Culture Defines It: Carrying Capacity on Rapa Nui / Cedric O. Puleston, Thegn N. Ladefoged Population Principles, Climate Change, and the “Collapse” of the Rapa Nui Society / Mauricio Lima, Eugenia M. Gayo, Sergio A. Estay, Nils Chr. Stenseth Claims and Evidence in the Population History of Rapa Nui (Easter Island) / Carl P. Lipo, Robert J. DiNapoli, Terry L. Hunt European Contact The Human Giants of Easter Island (Rapa Nui) / Jan J. Boersema Synthesis Towards a Holistic Approach to Easter Island’s Prehistory / Valentí Rull, Christopher Stevenson
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  • 6
    Call number: AWI G8-23-95167
    Description / Table of Contents: The Arctic nearshore zone plays a key role in the carbon cycle. Organic-rich sediments get eroded off permafrost affected coastlines and can be directly transferred to the nearshore zone. Permafrost in the Arctic stores a high amount of organic matter and is vulnerable to thermo-erosion, which is expected to increase due to climate change. This will likely result in higher sediment loads in nearshore waters and has the potential to alter local ecosystems by limiting light transmission into the water column, thus limiting primary production to the top-most part of it, and increasing nutrient export from coastal erosion. Greater organic matter input could result in the release of greenhouse gases to the atmosphere. Climate change also acts upon the fluvial system, leading to greater discharge to the nearshore zone. It leads to decreasing sea-ice cover as well, which will both increase wave energy and lengthen the open-water season. Yet, knowledge on these processes and the resulting impact on the nearshore zone is scarce, because access to and instrument deployment in the nearshore zone is challenging. Remote sensing can alleviate these issues in providing rapid data delivery in otherwise non-accessible areas. However, the waters in the Arctic nearshore zone are optically complex, with multiple influencing factors, such as organic rich suspended sediments, colored dissolved organic matter (cDOM), and phytoplankton. The goal of this dissertation was to use remotely sensed imagery to monitor processes related to turbidity caused by suspended sediments in the Arctic nearshore zone. In-situ measurements of water-leaving reflectance and surface water turbidity were used to calibrate a semi-empirical algorithm which relates turbidity from satellite imagery. Based on this algorithm and ancillary ocean and climate variables, the mechanisms underpinning nearshore turbidity in the Arctic were identified at a resolution not achieved before. The calibration of the Arctic Nearshore Turbidity Algorithm (ANTA) was based on in-situ measurements from the coastal and inner-shelf waters around Herschel Island Qikiqtaruk (HIQ) in the western Canadian Arctic from the summer seasons 2018 and 2019. It performed better than existing algorithms, developed for global applications, in relating turbidity from remotely sensed imagery. These existing algorithms were lacking validation data from permafrost affected waters, and were thus not able to reflect the complexity of Arctic nearshore waters. The ANTA has a higher sensitivity towards the lowest turbidity values, which is an asset for identifying sediment pathways in the nearshore zone. Its transferability to areas beyond HIQ was successfully demonstrated using turbidity measurements matching satellite image recordings from Adventfjorden, Svalbard. The ANTA is a powerful tool that provides robust turbidity estimations in a variety of Arctic nearshore environments. Drivers of nearshore turbidity in the Arctic were analyzed by combining ANTA results from the summer season 2019 from HIQ with ocean and climate variables obtained from the weather station at HIQ, the ERA5 reanalysis database, and the Mackenzie River discharge. ERA5 reanalysis data were obtained as domain averages over the Canadian Beaufort Shelf. Nearshore turbidity was linearly correlated to wind speed, significant wave height and wave period. Interestingly, nearshore turbidity was only correlated to wind speed at the shelf, but not to the in-situ measurements from the weather station at HIQ. This shows that nearshore turbidity, albeit being of limited spatial extent, gets influenced by the weather conditions multiple kilometers away, rather than in its direct vicinity. The large influence of wave energy on nearshore turbidity indicates that freshly eroded material off the coast is a major contributor to the nearshore sediment load. This contrasts results from the temperate and tropical oceans, where tides and currents are the major drivers of nearshore turbidity. The Mackenzie River discharge was not identified as a driver of nearshore turbidity in 2019, however, the analysis of 30 years of Landsat archive imagery from 1986 to 2016 suggests a direct link between the prevailing wind direction, which heavily influences the Mackenzie River plume extent, and nearshore turbidity around HIQ. This discrepancy could be caused by the abnormal discharge behavior of the Mackenzie River in 2019. This dissertation has substantially advanced the understanding of suspended sediment processes in the Arctic nearshore zone and provided new monitoring tools for future studies. The presented results will help to understand the role of the Arctic nearshore zone in the carbon cycle under a changing climate.
    Type of Medium: Dissertations
    Pages: xv, ii, 85, xvii Seiten , Illustrationen, Diagramme, Karten
    Language: English
    Note: Dissertation, Universität Potsdam, 2022 (kumulative Dissertation) , TABLE OF CONTENTS Abstract Zusammenfassung Allgemeinverständliche Zusammenfassung List of Figures List of Tables Funding Chapter 1 Introduction 1.1 Scientific Background 1.1.1 Arctic Climate Change 1.1.2 The Arctic Nearshore Zone 1.1.3 Ocean Color Remote Sensing 1.2 Objectives 1.3 Study Area 1.4 Methods 1.4.1 Field Sampling 1.4.2 Data Processing 1.4.3 Satellite Imagery Processing 1.5 Thesis Structure 1.6 Author Contributions Chapter 2 Long-Term High-Resolution Sediment and Sea Surface Temperature Spatial Patterns in Arctic Nearshore Waters retrived using 30-year Landsat Archive Imagery 2.1 Abstract 2.2 Introduction 2.3 Material and Methods 2.3.1 Regional Setting 2.3.2 Landsat Images Acquisition and Processing 2.3.3 Landsat Turbidity Retrieval 2.3.4 Transects in the nearshore zone 2.3.5 Wind Data 2.4 Results 2.4.1 Brightness Temperature 2.4.2 Surface Reflectance and Turbidity Mapping 2.4.3 Gradients in the nearshore zone 2.5 Discussion 2.6 Conclusion Appendix A Chapter 3 The Arctic Nearshore Turbidity Algorithm (ANTA) - A Multi Sensor Turbidity Algorithm for Arctic Nearshore Environments 3.1 Abstract 3.2 Introduction 3.3 Methods 3.3.1 Regional setting 3.3.2 In-situ sampling 3.3.3 Optical data processing 3.3.4 Algorithm tuning 3.3.5 Satellite imagery processing 3.4 Results and Discussion 3.4.1 Turbidity and SPM 3.4.2 ANTA performance 3.4.3 Comparison with the Dogliotti et al., (2015) algorithm 3.4.4 Test and transfer of the ANTA 3.5 Conclusion Chapter 4 Drivers of Turbidity and its Seasonal Variability in the Nearshore Zone of Herschel Island Qikiqtaruk (western Canadian Arctic) 4.1 Abstract 4.2 Introduction 4.3 Methods 4.3.1 Study Area 4.3.2 Satellite Imagery 4.3.3 In-situ data 4.3.4 Reanalysis data 4.4 Results and Discussion 4.4.1 Time Series Analysis 4.4.2 Drivers of turbidity 4.5 Conclusion Chapter 5 Synthesis 5.1 Applicability of Remote Sensing Algorithms in the Arctic Nearshore Zone 5.2 Drivers of Nearshore Turbidity 5.3 Spatial Variations of Nearshore Turbidity 5.4 Challenges and Outlook List of Acronyms Bibliography Danksagung
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  • 7
    Call number: AWI P5-23-95149
    Description / Table of Contents: Weniger als 25 Jahre geben Forscher*innen ihm noch, dann wird es soweit sein: Bis 2050 wird das Eis der Arktis abschmelzen, und unser Planet, den Generationen nur mit von ewigem Eis bedeckten Polkappen kennen, wird sich für immer verändern. Welche Folgen wird das Schwinden des Eises für die Menschheit haben? Wie wirkt es sich auf das Klima, die Meere und unser Wetter aus? Wer den Klimawandel wirklich verstehen will, sollte den Blick auf die Polarregionen richten, um zu erkennen, was sie für unser Klima in Mitteleuropa bedeuten und wie sie sich und damit auch unseren Alltag verändern. Stefanie Arndt lässt ihre Leser*innen die entlegensten Regionen dieser Erde durch ihre Augen sehen. Sie erzählt von den tiefgreifenden Veränderungen, die sie auf ihren Expeditionen mit der Polarstern beobachten konnte, von ihrer Arbeit als Polarforscherin und von der zarten Schönheit eines schwindenden Lebensraums. Was so fern scheint, rückt plötzlich ganz nahe: Können wir die unumkehrbaren Auswirkungen, die ein Abschmelzen der Polkappen nach sich zöge, noch aufhalten? Und wenn ja: Wie?
    Type of Medium: Monograph available for loan
    Pages: 221 Seiten, 16 ungezählte Bildtafelseiten , Illustrationen, 2 Karten , 21 cm x 13.5 cm
    Edition: Originalausgabe
    ISBN: 9783499008665 , 978-3-499-00866-5 , 3499008661
    Language: German
    Note: Inhaltsverzeichnis Vorwort Faszination Eis Teil I - Eine dünne Hülle Heute -42 °C in der Arktis Ein Regenwald am Südpol Mit dem Wind um die Welt In der Wüste Teil II - Das Ende des Eises Expeditionen zu den Eisschilden unserer Erde Unterwegs auf dem Meereis der Arktis Das unsichtbare Eis der Erde Teil III - Ein neuer Ozean Die Weltreise der Enten The Day After Tomorrow Nur ein paar Zentimeter? Das Meer wird sauer Teil IV - Belebte Pole Unter dem Meer Unterwegs auf dünnem Eis Das große Kuscheln Der Klang des Ozeans Generation Zukunft Dank Nachtrag Quellen Bildnachweis
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  • 8
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: AWI Bio-22-94853
    Description / Table of Contents: This multidisciplinary book discusses the manifold challenges arctic marine and terrestrial wildlife, ecosystems and people face these times. Major health threats caused by the consequences of climate change, environmental pollution and increasing tourism in northern regions around the globe are explored. The most common infectious diseases in wild and domesticated arctic animals are reviewed and the impact they could have on circumpolar ecosystems as well as on the lives of arctic people are profoundly discussed. Moreover, the book reviews arctic hunting, herding and food conservation strategies and introduces veterinary medicine in remote indigenous communities. "Arctic One Health" is authored by experts based in arctic regions spanning from North America over Europe to Asia to cover a broad range of topics and perspectives. The book addresses researchers in Veterinary Medicine, Ecology, Microbiology and Anthropology. The book contributes towards achieving the UN Sustainable Developmental Goals, in particular SDG 15, Life on Land.
    Type of Medium: Monograph available for loan
    Pages: XIX, 573 Seiten , Illustrationen
    ISBN: 978-3-030-87852-8
    Language: English
    Note: Contents Part I Introduction The Arctic Region and Its Inhabitants / Anastasia Emelyanova A Holistic Approach to One Health in the Arctic / Arleigh Reynolds, Susan Kutz, Tessa Baker Seasonal Animal Migrations and the Arctic: Ecology, Diversity, and Spread of Infectious Agents / Øystein Varpe, Silke Bauer Part II Major Health Threats to Arctic Animals and People Climate Change in Northern Regions / Bob van Oort, Marianne Tronstad Lund, Anouk Brisebois Loss of Untouched Land / Roland Pape Arctic Ecosystems, Wildlife and Man: Threats from Persistent Organic Pollutants and Mercury / Christian Sonne, Robert James Letcher, Bjørn Munro Jenssen, Rune Dietz Oil Spills in the Arctic / Sadie K. Wright, Sarah Allan, Sarah M. Wilkin, Michael Ziccardi Nuclear Radiation / Birgitta Åhman Part III Arctic Zoonoses: Diseases Transmitted from Animals to Man Rabies in the Arctic / Karsten Hueffer, Morten Tryland, Svetlana Dresvyanikova Brucellosis in the Arctic and Northern Regions / Xavier Fernandez Aguilar, Ingebjørg H. Nymo, Kimberlee Beckmen, Svetlana Dresvyanikova, Irina Egorova, Susan Kutz Anthrax in the North / Karsten Hueffer, Svetlana Dresvyanikova, Irina Egorova Cystic and Alveolar Echinococcosis Caused by Echinococcus canadensis and E. multilocularis in the Arctic / Temitope U. Kolapo, Antti Oksanen, Rebecca Davidson, Emily J. Jenkins Toxoplasmosis in Northern Regions / Émilie Bouchard, Pikka Jokelainen, Rajnish Sharma, Heather Fenton, Emily J. Jenkins Trichinella spp. in the North / Rajnish Sharma, Edoardo Pozio, Émilie Bouchard, Emily J. Jenkins Cryptosporidiosis and Giardiosis in the Arctic: Increasing Threats in a Warmer World? / Lucy J. Robertson, John J. Debenham Erysipelas in Arctic and Northern Regions / Fabien Mavrot, O. Alejandro Aleuy, Taya Forde, Susan J. Kutz Tularemia in the Arctic / Cristina M. Hansen, Svetlana Dresvyannikova Orthohantaviruses in the Arctic: Present and Future / Frauke Ecke, Magnus Magnusson, Barbara A. Han, Magnus Evander Zoonotic Marine Helminths: Anisakid Nematodes and Diphyllobothriid Cestodes / Heather Fenton Parapoxvirus Infections in Northern Species and Populations / Morten Tryland Part IV Harvesting the Arctic: Potential Health Threats for Arctic People Hunting with Lead Ammunition: A One Health Perspective / Jon M. Arnemo, Boris Fuchs, Christian Sonne, Sigbjørn Stokke Traditional Conservation Methods and Food Habits in the Arctic / Raphaela Stimmelmayr, Gay Sheffield Part V Working with Arctic Communities Wildlife Health Surveillance in the Arctic / Sylvia L. Checkley, Matilde Tomaselli, Nigel Caulkett Dogs and People: Providing Veterinary Services to Remote Arctic Communities / Tessa Baker, Laurie Meythaler-Mullins, Arleigh Reynolds, Susan Kutz Semi-Domesticated Reindeer, Health, and Animal Welfare / Morten Tryland
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  • 9
    Call number: AWI Bio-22-95014
    Description / Table of Contents: The deciduous needle tree larch (Larix Mill.) covers more than 80% of the Asian boreal forests. Only a few Larix species constitute the vast forests and these species differ markedly in their ecological traits, most importantly in their ability to grow on and stabilize underlying permafrost. The pronounced dominance of the summergreen larches makes the Asian boreal forests unique, as the rest of the northern hemisphere boreal forests is almost exclusively dominated by evergreen needle-leaf forests. Global warming is impacting the whole world but is especially pronounced in the arctic and boreal regions. Although adapted to extreme climatic conditions, larch forests are sensitive to varying climatic conditions. By their sheer size, changes in Asian larch forests as range shifts or changes in species composition and the resulting vegetation-climate feedbacks are of global relevance. It is however still uncertain if larch forests will persist under the ongoing warming climate or if they will be replaced by evergreen forests. It is therefore of great importance to understand how these ecosystems will react to future climate warmings and if they will maintain their dominance. One step in the better understanding of larch dynamics is to study how the vast dominant forests developed and why they only established in northern Asia. A second step is to study how the species reacted to past changes in the climate. The first objective of this thesis was to review and identify factors promoting Asian larch dominance. I achieved this by synthesizing and comparing reported larch occurrences and influencing components on the northern hemisphere continents in the present and in the past. The second objective was to find a possibility to directly study past Larix populations in Siberia and specifically their genetic variation, enabling the study of geographic movements. For this, I established chloroplast enrichment by hybridization capture from sedimentary ancient DNA (sedaDNA) isolated from lake sediment records. The third objective was to use the established method to track past larch populations, their glacial refugia during the Last Glacial Maximum (LGM) around 21,000 years before present (ka BP), and their post-glacial migration patterns. To study larch promoting factors, I compared the present state of larch species ranges, areas of dominance, their bioclimatic niches, and the distribution on different extents and thaw depths of permafrost. The species comparison showed that the bioclimatic niches greatly overlap between the American and Asian species and that it is only in the extremely continental climates in which only the Asian larch species can persist. I revealed that the area of dominance is strongly connected to permafrost extent but less linked to permafrost seasonal thaw depths. Comparisons of the paleorecord of larch between the continents suggest differences in the recolonization history. Outside of northern Asia and Alaska, glacial refugial populations of larch were confined to the southern regions and thus recolonization could only occur as migration from south to north. Alaskan larch populations could not establish wide-range dominant forest which could be related to their own genetically depletion as separated refugial population. In Asia, it is still unclear whether or not the northern refugial populations contributed and enhanced the postglacial colonization or whether they were replaced by populations invading from the south in the course of climate warming. Asian larch dominance is thus promoted partly by adaptions to extremely continental climates and by adaptations to grow on continuous permafrost but could be also connected to differences in glacial survival and recolonization history of Larix species. Except for extremely rare macrofossil findings of fossilized cones, traditional methods to study past vegetation are not able to distinguish between larch species or populations. Within the scope of this thesis, I therefore established a method to retrieve genetic information of past larch populations to distinguish between species. Using the Larix chloroplast genome as target, I successfully applied the method of DNA target enrichment by hybridization capture on sedaDNA samples from lake records and showed that it is able to distinguish between larch species. I then used the method on samples from lake records from across Siberia dating back up to 50 ka BP. The results allowed me to address the question of glacial survival and post-glacial recolonization mode in Siberian larch species. The analyzed pattern showed that LGM refugia were almost exclusively constituted by L. gmelinii, even in sites of current L. sibirica distribution. For included study sites, L. sibirica migrated into its extant northern distribution area only in the Holocene. Consequently, the post-glacial recolonization of L. sibirica was not enhanced by northern glacial refugia. In case of sites in extant distribution area of L. gmelinii, the absence of a genetic turn-over point to a continuous population rather than an invasion of southern refugia. The results suggest that climate has a strong influence on the distribution of Larix species and that species may also respond differently to future climate warming. Because species differ in their ecological characteristics, species distribution is also relevant with respect to further feedbacks between vegetation and climate. With this thesis, I give an overview of present and past larch occurrences and evaluate which factors promote their dominance. Furthermore, I provide the tools to study past Larix species and give first important insights into the glacial history of Larix populations.
    Type of Medium: Dissertations
    Pages: x, 121 Seiten , Illustrationen
    Language: English
    Note: Dissertation, Universität Potsdam, 2022 , Table of Contents Summary Deutsche Zusammenfassung Table of Contents 1 Introduction 1.1 Larix forests in a changing climate 1.2 The genus Larix 1.3 Larix distribution in the world and their dominance in northern Asia 1.4 Methods to study past species dynamics 1.4.1 Modern genetic marker studies 1.4.2 Lake sediments as archives of the past 1.4.3 Pollen and macrofossils 1.4.4 Metabarcoding of sedimentary ancient DNA 1.4.5 Metagenomic shotgun sequencing 1.4.6 Target enrichment by hybridization capture 1.5 Thesis Objectives 1.6 Thesis outline & author contributions 2 Manuscript I 2.1 Abstract 2.2 Introduction 2.3 Material and methods 2.3.1 Bioclimatic limits 2.3.2 Pollen, macrofossil, and DNA datasets 2.3.3 Ice sheets 2.4 Results 2.4.1 Bioclimatic limits of Larix and its distribution on permafrost 2.4.2 Glacial occurrence patterns of Larix 2.5 Discussion 2.5.1 Are differences in species bioclimatic limits responsible for disparity in Larix distribution across continents? 2.5.2 Do high latitude glacial refugia guarantee larch dominance? 2.5.3 What role does postglacial migration play in larch dominance? 2.5.4 Fire as an additional factor 2.5.5 Outlook 2.6 Conclusion 2.7 Acknowledgements 2.8 Author contributions 2.9 References 3 Manuscript II 3.1 Abstract 3.2 Introduction 3.3 Methods 3.3.1 Sample material 3.3.2 Laboratory work 3.3.3 Data analysis 3.4 Results 3.4.1 Overview of the shotgun and hybridization capture data sets 3.4.2 Ancient DNA authenticity 3.4.3 Retrieval of the Larix chloroplast genome 3.5 Discussion 3.5.1 Taxonomic classification—conservative approach results in low numbers of assignment 3.5.2 Target enrichment success—Larix reads increased by orders of magnitude along with other taxonomic groups 3.5.3 Complete retrieval of ancient Larix chloroplast genomes 3.5.4 Larix sibirica variants present over time 3.5.5 Larch forest decline over the last 7000 years 3.6 Conclusion 3.7 Acknowledgments 3.8 Author contributions 3.9 References 4 Manuscript III 4.1 Abstract 4.2 Introduction 4.3 Results & Discussion 4.3.1 Chloroplast and repetitive DNA enrichment in the sedaDNA samples 4.3.2 A wider pre-glacial distribution of L. sibirica 4.3.3 Larix gmelinii formed northern LGM refugia across Siberia 4.3.4 Postglacial colonization history - differences among larch species 4.3.5 Environment likely plays a more important role than biogeography 4.4 Conclusion 4.5 Material & methods 4.5.1 Sample material 4.5.2 Sequence data analysis 4.6 Data availability 4.7 Acknowledgments 4.8 Author contributions 4.9 References 5 Discussion and synthesis 5.1 Hybridization capture is a well-suited method to study ancient species dynamics 5.1.1 Advantages and limitations of shotgun sequencing 5.1.2 Successful hybridization capture enrichment using chloroplast DNA 5.1.3 Challenges in single-copy target enrichment 5.1.4 Limitations and potentials to improve sedaDNA capture studies 5.2 Factors promoting Asian larch dominance 5.3 Drivers of Larix species distribution 5.3.1 Implications for larch forests under climate warming 5.4 Conclusion 5.5 Outlook 6 References 7 Appendix 7.1 Appendix to manuscript I 7.2 Appendix to manuscript II 7.3 Appendix to manuscript III 7.3.1 Material and Methods 7.3.2 Additional Results & Discussions 7.3.3 References Acknowledgements Eidesstattliche Erklärung
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  • 10
    Call number: AWI G3-23-95073
    Description / Table of Contents: The Arctic is changing rapidly and permafrost is thawing. Especially ice-rich permafrost, such as the late Pleistocene Yedoma, is vulnerable to rapid and deep thaw processes such as surface subsidence after the melting of ground ice. Due to permafrost thaw, the permafrost carbon pool is becoming increasingly accessible to microbes, leading to increased greenhouse gas emissions, which enhances the climate warming. The assessment of the molecular structure and biodegradability of permafrost organic matter (OM) is highly needed. My research revolves around the question “how does permafrost thaw affect its OM storage?” More specifically, I assessed (1) how molecular biomarkers can be applied to characterize permafrost OM, (2) greenhouse gas production rates from thawing permafrost, and (3) the quality of OM of frozen and (previously) thawed sediments. I studied deep (max. 55 m) Yedoma and thawed Yedoma permafrost sediments from Yakutia (Sakha Republic). I analyzed sediment cores taken below thermokarst lakes on the Bykovsky Peninsula (southeast of the Lena Delta) and in the Yukechi Alas (Central Yakutia), and headwall samples from the permafrost cliff Sobo-Sise (Lena Delta) and the retrogressive thaw slump Batagay (Yana Uplands). I measured biomarker concentrations of all sediment samples. Furthermore, I carried out incubation experiments to quantify greenhouse gas production in thawing permafrost. I showed that the biomarker proxies are useful to assess the source of the OM and to distinguish between OM derived from terrestrial higher plants, aquatic plants and microbial activity. In addition, I showed that some proxies help to assess the degree of degradation of permafrost OM, especially when combined with sedimentological data in a multi-proxy approach. The OM of Yedoma is generally better preserved than that of thawed Yedoma sediments. The greenhouse gas production was highest in the permafrost sediments that thawed for the first time, meaning that the frozen Yedoma sediments contained most labile OM. Furthermore, I showed that the methanogenic communities had established in the recently thawed sediments, but not yet in the still-frozen sediments. My research provided the first molecular biomarker distributions and organic carbon turnover data as well as insights in the state and processes in deep frozen and thawed Yedoma sediments. These findings show the relevance of studying OM in deep permafrost sediments.
    Type of Medium: Dissertations
    Pages: xxiii, 178 Seiten , Illustrationen, Diagramme, Karten
    Language: English
    Note: Table of Contents Abstract Zusammenfassung Samenvatting Acknowledgements List of Figures List of Tables List of Abbreviations 1 Introduction 1.1 Motivation 1.2 Aims and research questions 1.3 Scientific background 1.3.1 The Arctic in a changing climate 1.3.2 Northern Hemisphere permafrost region 1.3.3 Permafrost degradation 1.3.3.1 Thermokarst development 1.3.3.2 Retrogressive thaw slumps 1.3.4 Organic matter in permafrost deposits 1.4 Material and methods 1.4.1 Study sites 1.4.2 Main laboratory methods 1.5 Thesis structure 1.6 Overview of publications 1.6.1 Publication “n-Alkane Characteristics of Thawed Permafrost Deposits Below a Thermokarst Lake on Bykovsky Peninsula, Northeastern Siberia” 1.6.2 Publication “Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia” 1.6.3 Publication “Organic matter characteristics of a rapidly eroding permafrost cliff in NE Siberia (Lena Delta, Laptev Sea region)” 1.6.4 Publication “Molecular biomarkers in Batagay megaslump permafrost deposits reveal clear differences in organic matter preservation between glacial and interglacial periods” 1.6.5 Contributions to complementary research 2 Bykovsky Peninsula 2.1 Abstract 2.2 Introduction 2.3 Study area 2.4 Material and methods 2.4.1 Field work 2.4.2 Laboratory analyses 2.4.2.1 Biomarker analysis 2.4.2.2 Biomarker indices 2.5 Results 2.5.1 Bulk sediment 2.5.1.1 Long core PG2412 2.5.1.2 Short core PG2420 2.5.2 Hydrochemistry 2.5.3 n-Alkane distributions 2.6 Discussion 2.6.1 Depositional history at the study site 2.6.1.1 Unit I - Early Weichselian fluvial sedimentation 2.6.1.2 Unit II – Yedoma deposition in wetland landscapes dominated by low-centered polygons 2.6.1.3 Unit III/Unit A – Yedoma deposition under cold-dry conditions during the Late Weichselian 2.6.1.4 Unit IV/Unit B – Holocene thermokarst lake formation and lacustrine sedimentation 2.6.2 Organic matter degradation 2.7 Conclusion 2.8 Acknowledgements 3 Yukechi Alas 3.1 Abstract 3.2 Introduction 3.3 Methods and materials 3.3.1 Study area 3.3.2 Field work 3.3.3 Laboratory analyses 3.3.3.1 Organic carbon content 3.3.3.2 Lipid biomarkers 3.3.4 Incubations 3.3.5 Statistical analysis 3.4 Results 3.4.1 Organic matter characteristics 3.4.1.1 Alas lake sediment core YU-L7 3.4.1.2 Yedoma lake sediment core YU-L15 3.4.2 Greenhouse gas production 3.4.2.1 Alas lake sediment core YU-L7 3.4.2.2 Yedoma lake sediment core YU-L15 3.4.2.3 Carbon mineralization 3.4.3 Statistical correlation and regression 3.5 Discussion 3.5.1 Organic matter degradation potential 3.5.1.1 Organic carbon quantity 3.5.1.2 Organic matter preservation and talik formation 3.5.1.3 Presence of methanogenic communities 3.5.2 Greenhouse gas production 3.5.2.1 Carbon dioxide production 3.5.2.2 Methane production 3.5.3 GHG links with other parameters and outlook 3.6 Conclusion 3.7 Acknowledgements 4 Sobo-Sise cliff 4.1 Abstract 4.2 Introduction 4.3 Study area 4.4 Methods 4.4.1 Fieldwork 4.4.2 Sedimentological organic matter parameters 4.4.3 Lipid biomarkers 4.4.3.1 Extraction and fraction separation 4.4.3.2 GC-MS measurements and compound quantification 4.4.4 Biomarker indices 4.4.4.1 Average Chain Length 4.4.4.2 Carbon Preference Index 4.4.4.3 Higher Plant Fatty Acids 4.4.5 Data analysis 4.5 Results 4.5.1 Sedimentological organic matter parameters 4.5.2 Biomarkers 4.5.2.1 n-Alkanes 4.5.2.2 Fatty acids 4.5.3 Clustering 4.6 Discussion 4.6.1 Terrestrial depositional environment 4.6.1.1 Organic matter source 4.6.1.2 Organic matter quality 4.6.2 Implications and outlook 4.7 Conclusion 4.8 Acknowledgements 5 Batagay thaw slump 5.1 Abstract 5.2 Introduction 5.3 Study site 5.4 Methods 5.4.1 Sample collection 5.4.2 Laboratory analyses 5.5 Results 5.5.1 Detected biomolecules 5.5.2 Lower Ice Complex 5.5.3 Lower Sand Unit 5.5.4 Woody Layer 5.5.5 Upper Ice Complex - Yedoma 5.5.6 Holocene Cover 5.6 Discussion 5.6.1 Biogeochemical legacy of glacial periods 5.6.2 Biogeochemical legacy of interglacial periods 5.6.3 Modern organic matter mobilization in the Batagay megaslump 5.7 Conclusion 5.8 Acknowledgements 6 Synthesis 6.1 Lipid biomarkers to characterize permafrost organic matter 6.1.1 Organic matter source 6.1.2 Organic matter quality 6.2 Mobilization of organic matter in thawing permafrost 6.2.1 Methane production vs. emission 6.2.2 Using the data in models 6.2.3 Transport of OM into aquatic systems 6.3 Recommendations for future research References Appendix A Supporting information for Chapter 2 Appendix B Supporting information for Chapter 3 Appendix C Supporting information for Chapter 4 Appendix D Supporting information for Chapter 5
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  • 11
    Call number: AWI G5-23-95172
    Description / Table of Contents: Throughout the last ~3 million years, the Earth's climate system was characterised by cycles of glacial and interglacial periods. The current warm period, the Holocene, is comparably stable and stands out from this long-term cyclicality. However, since the industrial revolution, the climate has been increasingly affected by a human-induced increase in greenhouse gas concentrations. While instrumental observations are used to describe changes over the past ~200 years, indirect observations via proxy data are the main source of information beyond this instrumental era. These data are indicators of past climatic conditions, stored in palaeoclimate archives around the Earth. The proxy signal is affected by processes independent of the prevailing climatic conditions. In particular, for sedimentary archives such as marine sediments and polar ice sheets, material may be redistributed during or after the initial deposition and subsequent formation of the archive. This leads to noise in the records challenging reliable reconstructions on local or short time scales. This dissertation characterises the initial deposition of the climatic signal and quantifies the resulting archive-internal heterogeneity and its influence on the observed proxy signal to improve the representativity and interpretation of climate reconstructions from marine sediments and ice cores. To this end, the horizontal and vertical variation in radiocarbon content of a box-core from the South China Sea is investigated. The three-dimensional resolution is used to quantify the true uncertainty in radiocarbon age estimates from planktonic foraminifera with an extensive sampling scheme, including different sample volumes and replicated measurements of batches of small and large numbers of specimen. An assessment on the variability stemming from sediment mixing by benthic organisms reveals strong internal heterogeneity. Hence, sediment mixing leads to substantial time uncertainty of proxy-based reconstructions with error terms two to five times larger than previously assumed. A second three-dimensional analysis of the upper snowpack provides insights into the heterogeneous signal deposition and imprint in snow and firn. A new study design which combines a structure-from-motion photogrammetry approach with two-dimensional isotopic data is performed at a study site in the accumulation zone of the Greenland Ice Sheet. The photogrammetry method reveals an intermittent character of snowfall, a layer-wise snow deposition with substantial contributions by wind-driven erosion and redistribution to the final spatially variable accumulation and illustrated the evolution of stratigraphic noise at the surface. The isotopic data show the preservation of stratigraphic noise within the upper firn column, leading to a spatially variable climate signal imprint and heterogeneous layer thicknesses. Additional post-depositional modifications due to snow-air exchange are also investigated, but without a conclusive quantification of the contribution to the final isotopic signature. Finally, this characterisation and quantification of the complex signal formation in marine sediments and polar ice contributes to a better understanding of the signal content in proxy data which is needed to assess the natural climate variability during the Holocene.
    Type of Medium: Dissertations
    Pages: xx, 167 Seiten : Illustrationen, Diagramme
    Language: English
    Note: Dissertation, Universität Potsdam, 2023 (publikationsbasierte Dissertation) , CONTENTS 1 Introduction 1.1 Introduction to climate reconstructions 1.1.1 Radiocarbon as a tracer of time 1.1.2 Environmental information stored in snow 1.2 Challenges of climate reconstructions 1.2.1 The particle flux 1.2.2 Modifications after the initial deposition 1.2.3 Sampling and measurement uncertainty 1.3 Objectives and overview of the thesis 1.4 Author contributions to the Manuscripts 2 Age-heterogeneity in marine sediments revealed by three-dimensional high-resolution radio-carbon measurements 2.1 Introduction 2.2 Methods 2.2.1 Study approach 2.2.2 Core setup and sampling 2.2.3 Estimation of the sediment accumulation rate 2.2.4 Estimation of the sediment mixing strength 2.2.5 Estimation of the net sediment displacement 2.2.6 Visual assessment of mixing 2.3 Results 2.3.1 Radiocarbon measurements 2.3.2 Sediment accumulation rate 2.3.3 Sediment mixing estimates 2.3.4 Spatial structure of sediment mixing 2.3.5 Components of age uncertainty 2.4 Discussion 2.4.1 Spatial scale of sediment heterogeneity 2.4.2 Potential implications for palaeo-reconstructions 2.4.3 Suggested 14C measurement strategy 2.5 Conclusions 2.6 Supplementary Material 2.6.1 Supplementary figures and tables 2.6.2 Supplementary table 3 Local-scale deposition of surface snow on the Greenland ice sheet 3.1 Introduction 3.2 Data and methods 3.2.1 Study site 3.2.2 SfM photogrammetry 3.2.3 Additional snow height and snowfall data 3.2.4 Estimation of surface roughness 3.3 Results 3.3.1 Relative snow heights from DEMs 3.3.2 Temporal snow height evolution 3.3.3 Day-to-day variations of snowfall 3.3.4 Changes in surface roughness 3.3.5 Implied internal structure of the snowpack 3.4 Discussion 3.4.1 Changes of surface structures 3.4.2 Implications for proxy data 3.4.3 Implications for snow accumulation 3.4.4 SfM as an efficient monitoring tool 3.5 Conclusions 3.6 Appendix 3.6.1 Additional information 3.6.2 Accuracy estimates and validation 3.6.3 Validation 3.6.4 Overall snow height evolution 3.6.5 Surface roughness 4 A snapshot on the buildup of the stable water isotopic signal in the upper snowpack at east-grip, Geenland ice sheet 4.1 Introduction 4.2 Methods and data 4.2.1 Study site 4.2.2 DEM generation 4.2.3 Isotope measurements 4.2.4 Simulation of the snowpack layering 4.2.5 Expected uncertainty 4.3 Results 4.3.1 Snow height evolution 4.3.2 Mean isotopic records 4.3.3 Combining isotopic data with snow height information 4.3.4 Observed vs. simulated composition 4.3.5 Changes in the isotope signal over time 4.4 Discussion 4.4.1 Evolution of the snow surface 4.4.2 Two-dimensional view of isotopes in snow 4.4.3 Buildup of the snowpack isotopic signal 4.5 Conclusion 5 General discussion and conclusions 5.1 Heterogeneity in sedimentary archives 5.1.1 Quantifying archive-internal heterogeneity 5.1.2 Relation between signal and heterogeneity 5.2 Methods to improve climate reconstructions 5.3 Implications for climate reconstructions 5.4 Concluding remarks Bibliography A the role of sublimation as a driver of climate signals in the water isotope content of surface snow: laboratory and field experimental results A.1 Introduction A.2 Methods A.2.1 Laboratory experimental methods A.2.2 Field experimental methods A.3 Results A.3.1 Laboratory experiments A.3.2 Field experiments A.4 Discussion A.5 Conclusions B Atmosphere-snow exchange explains surface snow isotope variability Acknowledgments Eidesstattliche Erklärung
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  • 12
    Call number: ZSP-168-42
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 57 S. : graph. Darst.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 42
    Language: English
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  • 13
    Call number: AWI P6-07-0049 ; AWI Atl-20-2041
    Type of Medium: Monograph available for loan
    Pages: 75, 6 Seiten
    Edition: 1. Ausgabe
    ISSN: 0179-0072
    Series Statement: National Antarctic Research Report to SCAR 10, Annex
    Language: German , English , French , Russian , Spanish
    Note: Teilweise in deutscher, englischer, französischer, russischer und spanischer Sprache
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  • 14
    Series available for loan
    Series available for loan
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-54
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 94 S. : graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 54
    Language: German
    Note: Zugl.: Kiel, Univ. Diss., 1987
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  • 15
    Call number: 21/SR 90.0917(95) ; MOP 47161 / Mitte ; AWI G9-19-43041
    In: Veröffentlichungen des Zentralinstituts Physik der Erde, Nr. 95
    Type of Medium: Series available for loan
    Pages: 118 Seiten , Illustrationen , 30 cm
    Edition: als Manuskript gedruckt
    ISSN: 0514-8790
    Series Statement: Veröffentlichungen des Zentralinstituts Physik der Erde Nr. 95
    Language: German
    Note: Zugleich: Berlin, Akademie der Wissenschaften der DDR, Dissertation A, 1987 , Inhaltsverzeichnis: 0. Vorbemerkungen. - 1. Einleitung. - 2. Theoretische Grundlagen der gesteinsmagnetischen Anisotropieuntersuchungen. - 2.1. Suszeptibilitätsanisotropien in Mineralen. - 2.1.1. Magnetische Kristallanisotropie. - 2.1.2. Magnetische Formanisotropie. - 2.2. Suszeptibilitätsanisotropien in Gesteinen. - 2.3. Symmetriebeziehungen. - 3. Untersuchungsmethodik. - 3.1. Probenentnahme. - 3.2. Probenaufbereitung. - 3.3. Meßwertaufnahme. - 3.4. Meßwertbearbeitung. - 3.5. Fehlerbetrachtung. - 4. Gesteinsmagnetische Anisotropieuntersuchungen an Sedimentiten der Thüringischen und Subherzynen Senke und Magmatiten aus dem Südteil der DDR. - 4.1. Vorbemerkungen. - 4.2. Gesteinsmagnetische Anisotropieuntersuchungen in Sedimentiten. - 4.2.1. Genetische Klassifizierung der gesteinsmagnetischen Anisotropien. - 4.2.2. Anwendung der Methode auf Karbonate der Allertal-Grabenzone (Subherzyne Senke). - 4.2.2.1. Geologische Stellung 4.2.2.2. Ergebnisse der Anisotropieuntersuchungen. - 4.2.3. Anwendung der Methode auf Karbonate aus Randstörungen der Thüringischen Senke. - 4.2.3.1. Geologische Stellung. - 4.2.3.2. Ergebnisse der Anisotropieuntersuchungen. - 4.2.4. Diskussion der Ergebnisse. - 4.2.5. Schlußfolgerungen. - 4.3. Gesteinsmagnetische Anisotropieuntersuchungen an Magmatiten aus dem Südteil der DDR. - 4.3.1. Genetische Klassifizierung gesteinsmagnetischer Anisotropien in Magmatiten. - 4.3.2. Anwendung der Methode auf die Gesteine des Kirchberger Granits. - 4.3.2.1. Geologische Stellung. - 4.3.2.2. Diskussion der gesteinsmagnetischen Untersuchungsergebnisse. - 4.3.3. Anwendung der Methode auf die Gesteine des Meißener Massivs. - 4.3.3.1. Geologische Stellung. - 4.3.3.2. Diskussion der gesteinsmagnetischen Untersuchungsergebnisse. - 4.3.4. Schlußfolgerungen. - 5. Die Anisotropie der Suszeptibilität in den Ketamorphiten der Schirmacher-Oase (Ostantarktika). - 5.1. Vorbemerkungen. - 5.2. Genetische Klassifizierung gesteinsmagnetischer Anisotropien in Metamorphiten. - 5.2.1. Modellvorstellungen zum Orientierungsverhalten ferromagnetischer Minerale bei Deformation. - 5.2.2. Anisotropie der Suszeptibilität und Regionalmetamorphose. - 5.2.3. Anisotropie der Suszeptibilität und Dynamometamorphose. - 5.3. Petromagnetische und petrographisch/petrochemische Eigenschaften der Tektonite (Kataklasite, Mylonite, Blastomylonite) aus einer Störungszone der Schirmacher Oase. - 5.3.1. Geologisch-geophysikalische Übersicht. - 5.3.2. Strukturelle und stoffliche Untersuchungsergebnisse. - 5.3.2.1. Tektonische und petrographisch/petrochemische Ergebnisse. - 5.3.2.2. Zur Anisotropie der gesteinsmagnetischen Eigenschaften 5.3.2.3. Zur kristallographischen Anisotropie (Textur) des Magnetitanteils. - 5.3.3. Diskussion der Ergebnisse und Schlußfolgerungen. - 5.3.3.1. Parameterbeziehung zwischen den petrophysikalischen und stofflichen Ergebnissen aus methodischer Sicht. - 5.3.3.2. Geowissenschaftliehe Komplexinterpretation zur Kinematik der Störungszone. - 6. Anwendung gesteinsmagnetischer Anisotropieuntersuchungen zur Bewertung paläomagnetischer Meßergebnisse. - 6.1. Anisotropie beim Erwerb einer thermoremanenten Magnetisierung (TRM). - 6.2. Anisotropie beim Erwerb einer Sedimentationsremanenz (DRM). - 6.3. Schlußfolgerungen. - 7. Zusammenfassende Ergebnisdarstellung und Schlußfolgerungen für weiterführende Arbeiten. - Literatur.
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  • 16
    Call number: G 9135 ; AWI G6-19-54401
    Type of Medium: Monograph available for loan
    Pages: 167 Seiten , Illustrationen
    Language: German
    Note: Karlsruhe, Univ., Diss., 1988 , Inhaltsverzeichnis: 1 Einleitung und Zielsetzung. - 2. Geographie - Geologie - Tektonik. - 3. Geologisch-petrographischer Überblick - Geländebeobachtungen. - 4. Probennahme und Aufbereitung. - 5. Analytik. - 5.1. Methoden. - 5.2. Analysengenauigkeit. - 6. Darstellung und Diskussion der Ergebnisse. - 6.1. Gabbroide Gesteine. - 6.1.1 Petrographie. - 6.1.2. Chemismus. - 6.1.2.1. Nomenklatur. - 6.1.2.2. Haupt- und Spurenelemente. - 6.1.2.3. Seltene Erden und Spider-Diagramme. - 6.1.2.4. Mineralehemimus. - 6.2. Monzodioritische Gesteine. - 6.2.1. Petrographie. - 6.2.2. Chemismus. - 6.2.2.1. Haupt- und Spurenelemente. - 6.2.2.2. Seltene Erden und Spider-Diagramme. - 6.2.2.3. Mineralchemismus. - 6.3. Syenitische Gesteine. - 6.3.1. Petrographie. - 6.3.2. Chemismus. - 6.3.2.1. Haupt- und Spurenelemente. - 6.3.2.2. Seltene Erden und Spider-Diagramme. - 6.3.2.3. Mineralchemismus. - 6.4. Basalte. - 6.4.1. Petrographie. - 6.4.2. Chemismus. - 6.4.2.1. Nomenklatur. - 6.4.2.2. Haupt- und Spurenelemente. - 6.4.2.3. Seltene Erden und Spider-Diagramme. - 6.5. Ganggesteine. - 6.5.1. Petrographie und Verbreitung. - 6.5.2. Chemismus. - 6.5.2.1. Haupt- und Spurenelemente. - 6.5.2.2. Seltene Erden und Spider-Diagramme. - 7. Genetische Überlegungen. - 8. Zusammenfassung. - 9. Literaturverzeichnis. - Anhang. - Anmerkungen zu den Probenkarten 1 bis 3 und den Tabellen A bis E. - Probenkarten 1 bis 3. - Tab. A: Probenverzeichnis. - Tab. B: Haupt- und Spurenelementanalysen, normativer Mineralbestand und berechnete Parameter. - Tab. C: SEE-Analysen. - Tab. D: Mineralanalysen der Clinopyroxene. - Tab. E: Mineralanalysen der Olivine. -
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  • 17
    Call number: AWI Bio-89-0098
    Type of Medium: Monograph available for loan
    Pages: 245 S. , Ill., graph. Darst., Kt. , 30 cm
    Language: German
    Note: Inhalt: EINLEITUNG. - Zweck der Exkursion. - Grönland - Godhavn - Arktisk Station. - Vorbereitungen. - Teilnehmerliste. - Reisetagebuch. - ALLGEMEINE VERANSTALTUNGEN. - Exkursionen für alle. - Wanderung zum Inlandeis. - Besuch beim Kommunalrat von Qeqertarssuaq. - BERICHTE DER ARBEITSGRUPPEN. - Rechtliche Bewertung des Meeresumweltschutzes. - Ökologie des Wattengebietes von Nipisat. - Tiefenzonierung der Bodenfauna im Diskofjord. - Fischbiologische Arbeiten. - Algenvegetation von Disko-Island. - Beiträge zur Botanik und Pflanzenökologie. - Liste der beobachteten Vogel- und Säugetierarten. - Homothermische radioaktive Quellen: Die Nematodenfauna. - "Southern" flora and "marine" fauna in the homothermic springs. - Cryptobiosis in arctic tardigrads.
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  • 18
    Monograph available for loan
    Monograph available for loan
    Leipzig : Brockhaus
    Call number: 1.4/8928 ; AWI E1-89-0046 ; AWI E1-89-0047 ; AWI E1-18-57292
    Description / Table of Contents: Alfred Wegener (1880-1930) war eine der vielseitigsten Forscherpersönlichkeiten unseres Jahrhunderts. Er beschränkte sich in seinem Schaffen und mit seinen wissenschaftlichen Ideen nicht auf ein enges Fachgebiet. Wegener gab Impulse für die Polarforschung ebenso wie für die Geowissenschaften, von der Geologie über Geophysik und Meteorologie bis hin zur kosmischen Physik. ln seiner Doktorarbeit hatte er in brillanter Weise ein astronomisches Thema behandelt und sich mit seinem 1911 erschienenen Buch "Thermodynamik der Atmosphäre" als Meteorologe vorgestellt, als er am 6.12.1912 mit der kühnen Hypothese vor die in Frankfurt am Main tagende Hauptversammlung der Geologischen Vereinigung trat, nach der die Festländer so "fest" gar nicht wären und sich ihre Lage im Verlauf der Erdgeschichte verschiebe. Er wurde als "Nichtfachmann" nicht ernstgenommen, ja von manchem sogar verhöhnt. Es bedurfte der wissenschaftlichen Erkenntnisse unserer Tage, um die Richtigkeit von Wegeners "Kontinentalverschiebungstheorie'' zu beweisen. Selbst in Fachkreisen ist es wenig bekannt, daß Alfred Wegener aus scharfsinnigen Experimenten Gedanken über die Entstehung der Mondkrater durch Meteoriteneinschlag entwickelte und aus ihnen Vorstellungen über die Entstehung des Mondes und der Erde formulierte, die im Kern wesensgleich mit heutigen Kenntnissen sind. Vier Grönlandexpeditionen boten Alfred Wegener ungelöste wissenschaftliche Aufgaben, ja Abenteuer. Kurz entschlossen hatte er sich als Meteorologe und Physiker um Teilnahme an der Expedition des dänischen Polarforschers Ludvig Mylius-Erichsen beworben und war angenommen worden. Auf dieser seiner ersten GrönIand-Expedition schrieb Wegener am 25.12.1906: "Hier draußen gibt es Arbeit, die des Mannes wert ist, hier gewinnt das Leben Inhalt. Mögen Schwächlinge daheim bleiben und alle Theorien der Welt auswendig lernen, hier draußen Auge in Auge der Natur gegenüberstehen und seinen Scharfsinn an ihren Rätseln erproben, das gibt dem Leben einen ganz ungeahnten Inhalt." Die von Ulrich Wutzke verfaßte Biographie entwirft ein in seinem Detailreichtum fesselndes Bild eines Forscherlebens, dessen wichtigste Stationen Berlin, Marburg, Hamburg und Graz waren. Der Autor hatte Gelegenheit, diese Stationen zu besuchen und an Ort und Stelle zu recherchieren, ja, mit Zeitgenossen Wegeners zu sprechen, die ihn gekannt und erlebt haben, mit Expeditionsteilnehmern, seiner Witwe und seinen Töchtern. Gleichermaßen mit Akribie und Wärme zeichnet Ulrich Wutzke den Lebensweg eines sympathischen, fleißigen Menschen, der immer an der Verbesserung seiner Theorien arbeitete. Durch seinen tragischen Tod im Grönlandeis hat Wegener den Triumph seiner Theorien nicht mehr erleben können.
    Type of Medium: Monograph available for loan
    Pages: 272 S. : Ill.
    Edition: 1. Aufl.
    ISBN: 3325001734
    Series Statement: Pioniere der Menschheit. Hervorragende Forscher und Entdecker
    Language: German
    Note: Inhalt: Expeditionsleiter. - 8. Juni 1930; Pfingstsonntag. - Reifejahre. - Wohlbehütete Kindheit. - Studienjahre hier und dort. - Weltrekord!. - Ein Leben für die Wissenschaft. - Grönland!. - Auf unbekannten Wegen. - Triumph und Unglück. - Privatdozent in Marburg. - Die epochale Idee. - Neue Pläne. - Probe auf Island. - Wieder Grönland. - Auf dem Rücken des Gletschers. - Quer durch Grönland. - Treue Gefährtin. - Krieg. - Neubeginn. - Professor in Hamburg. - Karibisches Intermezzo. - Ruf nach Graz. - Ein Traum wird wahr. - Vorbereitungen. - Im Motorboot vor Grönland. - Erfolgreicher Aufstieg. - Suche nach einem Zugang. - Auf dem Kgmarujuk. - Mit Hundeschlitten ins Innere. - Der letzte Winter. - 13.6.1930, der 35. Wartetag. - Die Transporte. - Eismitte. - Erinnerungen. - Anhang. - Literaturverzeichnis. - Register.
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  • 19
    Journal available for loan
    Journal available for loan
    Woods Hole, Mass. : Woods Hole Oceanographic Institution
    Associated volumes
    Call number: AWI P6-89-0371
    In: Oceanus
    Type of Medium: Journal available for loan
    Pages: 112 Seiten , Illustrationen, graphische Darstellungen, Karten
    ISSN: 0029-8182
    Series Statement: Oceanus 31,2
    Language: English
    Note: Contents: A reader's guide to the Antarctic / James H. W. Hain. - Introduction: The callenge of Antarctic Science / David J. Drewry. - The Antarctic Treaty. - The Antarctic Treaty System / Lee A. Kimball. - The Antarctic Mineral Resources Negotiations / R. Tucker Scully. - The Antarctic Legal Regime and the Law of the Sea / Christopher C. Joyner. - Antarctica: Is there any oil and natural gas? / David H. Elliot. - The Southern Ocean and global climate / Arnold L. Gordon. - The Antarctic Ozone Hole / Mario J. Molina. - The Antarctic Circumpolar current / Thomas Whitworth III. - Antarctic Marine Living Resources / Kenneth Sherman, and Alan F. Ryan. - Whales / Douglas G. Chapman. - Seals / Donald B. Siniff. - The BIOMASS Program / Sayed Z. El-Sayed. - Antarctic Logistics / Alfred N. Fowler. - The Soviet Antarctic Program / Lawson W. Brigham. - The growth of Antarctic Tourism / Paul Dudley Hart. - Protecting the Antarctic Environment / Gerald S. Schatz. - Environmental Threats in Antarctica / Paul S. Bogart. - Letters. - Book reviews.
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  • 20
    Call number: AWI G2-19-93054
    Type of Medium: Monograph available for loan
    Pages: 57 Blätter , Illustrationen
    Language: English , German
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  • 21
    Call number: AWI A1-19-93224
    Type of Medium: Monograph available for loan
    Pages: 38 Seiten , Illustrationen , 23 cm
    Language: English
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  • 22
    Monograph available for loan
    Monograph available for loan
    [Erscheinungsort nicht ermittelbar] : Arbeitsgemeinschaft Stabile Isotope
    Call number: AWI G6-19-93056
    Type of Medium: Monograph available for loan
    Pages: 31 Blätter
    Language: English , German
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  • 23
    Call number: 98.0323 ; AWI Bio-99-0171
    Type of Medium: Monograph available for loan
    Pages: 227 S. , Ill.
    ISBN: 3258039747
    Classification:
    Historical Geology
    Language: German , English , French
    Note: Inhaltsverzeichnis = Table of contents = Table des matières. - Einleitung = Introduction = Introduction. - Bemerkungen zum Inhalt und zur Gestaltung des Buches = Comments on the Contents and lay-out of the book = Remarques quant au contenue et à la structure du livre. - Methode = Methods = Methode. - Oekogramm = Ecogram = Ecogramme. - Bestimmungsschlüssel = Identification key = Clé d'identification. - Charakterisierung der Makroreste = Description of the macro-remains = Description des macrorestes. - Weitere Makroreste = Further macro-remains = Autres macrorestes. - Literatur = Literature = Litterature. - Index der Arten = Index of species = Index des espèces. , Text dt., engl. u. franz.
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  • 24
    Call number: ZSP-168-48
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 117 S. : graph. Darst.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 48
    Language: German
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  • 25
    Series available for loan
    Series available for loan
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-55
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 72 S. : graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 55
    Language: English
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  • 26
    Series available for loan
    Series available for loan
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-50
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 164 S. : graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 50
    Language: German
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  • 27
    Call number: ZSP-119-4
    In: Altenburger naturwissenschaftliche Forschungen
    Type of Medium: Series available for loan
    Pages: 70 S. : 26 Abb. , 9 Tab. ; 21 cm
    Series Statement: Altenburger naturwissenschaftliche Forschungen 4
    Language: German
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  • 28
    Series available for loan
    Series available for loan
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-53
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 118 S. : Ill., graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 53
    Language: German
    Note: Zugl.: Kiel, Univ., Diss., 1987
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  • 29
    Call number: AWI Bio-99-0079 (5)
    In: The Northwest European pollen flora, V
    Type of Medium: Monograph available for loan
    Pages: 154 S.
    ISBN: 0444418830 , 0-444-87268-X
    Language: English
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  • 30
    Monograph available for loan
    Monograph available for loan
    Englewood Cliffs, NJ : Prentice Hall
    Call number: AWI G6-95-0095
    Type of Medium: Monograph available for loan
    Pages: X, 437 Seiten , Illustrationen
    Edition: second edition
    ISBN: 0133513963
    Language: English
    Note: Contents Preface 1 The Hydrologic Cycle Composition of Rainwater Hydrology Nonmeteoric Types of Water Chemical Terms in Hydrology Suggested Reading 2 Chemical Background Units and Terminology Equilibrium Thermodynamics Activity-Concentration Relationships Diffusion Review Questions Suggested Reading 3 Organic Compounds in Natural Waters Structure of Natural Organic Solutes Functional Groups Humic Substances DOC in Natural Environments Review Question Suggested Reading 4 The Carbonate System and pH Control Carbonic Acid System Alkalinity and Titration Curves Calcium Carbonate Solubility Dolomite High-Magnesium Calcite Ground and Surface Waters in Carbonate Terrains Carbonate Chemistry in the Oceans Acid Waters Review Questions Suggested Reading 5 Clay Minerals and Ion Exchange Mineralogy and Composition Colloid Properties Retardation of Pollutant Cations in Ground water Review Questions Suggested Reading 6 Stability Relationships and Silicate Equilibria Solubility Equilibria (Congruent Solution) Incongruent Solution and Stability Diagrams Uncertainty in Mineral Stability Diagrams Graphical Derivation of the Topology of Stability Diagrams Review Questions Suggested Reading 7 Kinetics Nucleation Dissolution and Growth Dissolution of Calcite in Sea water Growth of Calcite and Aragonite in Sea water Dissolution of Silicates Review Questions Suggested Reading 8 Weathering and Water Chemistry: 1. Principles Soil Formation The Mass-Balance Approach The Thermodynamic Approach The Statistical Approach Review Questions Suggested Reading 9 Weathering and Water Chemistry: 2. Examples Amazon River System Mackenzie River System, Canada Cascade Mountains, Washington Rio Tanama System, Puerto Rico Absaroka Mountains, Wyoming Adirondack Mountains, New York Mattole River, California Waters from Ultramafic Rocks Rhine River Soil Solutions in Volcanic Ash Summary Review Topic Suggested Reading 10 Acid Deposition and Surface Water Chemistry Acidity and Alkalinity Solubility of Aluminum Cation Exchange Anion Mobility and Anion Exchange Biological Processes Chemical Weathering Integrated Models Environmental Effects Review Questions Suggested Reading 11 Evaporation and Saline Waters Evaporation of Sierra Nevada Spring Water Chemical Divides and the Hardie-Eugster Model Modifications of the Hardie-Eugster Model Examples Evaporation of Seawater Saline Formation Waters Summary Review Questions Suggested Reading 12 The Oceans Circulation Composition of Sea water Removal Processes for the Major Species Suggested Reading 13 Redox Equilibria The Standard Hydrogen Electrode and Thermodynamic Conventions Measurement of Eh pe-pH and Eh-pH Diagrams Partial Pressure or Fugacity-Fugacity Diagrams Review Questions Suggested Reading 14 Redox Conditions in Natural Waters Photosynthesis Respiration and Decay Redox Buffering Lakes The Ocean Groundwater Summary Review Questions Suggested Reading 15 Trace Elements Sources of Trace Elements Speciation, Equilibrium Solubility Control Adsorption and Coprecipitation Controls Uptake by Living Organisms Summary Review Question Suggested Reading 16 Mathematical and Numerical Models Speciation and Saturation Programs Reactions in a Uniform, Nonadvecting Medium Reactions in a Nonuniform and/ or Advecting Medium Suggested Reading 17 Isotopes Stable Isotopes Radioactive Isotopes Suggested Reading References Glossary of Geological Terms APPENDIXES I Standard-State Thermodynamic Data for Some Common Species II Selected Values for Equilibrium Constants at 298.15K (25°C) and Standard Enthalpies of Reaction Ill Table of Atomic Weights Answers to Problems Author Index Subject Index
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  • 31
    Series available for loan
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    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-41
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 87 S. : Ill., graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 41
    Language: German
    Note: Zugl.: Kiel, Univ., Diss., 1987
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  • 32
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    Call number: ZSP-168-51
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 140 S. : graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 51
    Language: German
    Note: Zugl.: Kiel, Univ., Diss., 1988
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  • 33
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    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
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    Call number: ZSP-168-46
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 115 S. : graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 46
    Language: English
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  • 34
    Monograph available for loan
    Monograph available for loan
    San Diego [u.a.] : Academic Press
    Associated volumes
    Call number: AWI A7-90-0207 ; MOP 33002/42
    In: International geophysics series, 42
    Type of Medium: Monograph available for loan
    Pages: XXI, 307 Seiten , Illustrationen
    ISBN: 0120644908
    Series Statement: International geophysics series 42
    Language: English
    Note: Contents Preface Symbols Chapter 1 Introduction 1.1 Scope of Micrometeorology 1.2 Micrometeorology versus Microclimatology 1.3 Importance and Applications of Micrometeorology Problems and Exercises Chapter 2 Energy Budget near the Surface 2.1 Energy Fluxes at an Ideal Surface 2.2 Energy Balance Equations 2.3 Some Examples of Energy Budget 2.4 Applications Problems and Exercises Chapter 3 Radiation Balance near the Surface 3.1 Radiation Laws and Definitions 3.2 Shortwave Radiation 3.3 Longwave Radiation 3.4 Radiation Balance near the Surface 3.5 Radiative Flux Divergence 3.6 Applications Problems and Exercises Chapter 4 Soil Temperatures and Heat Transfer 4.1 Surface Temperature 4.2 Subsurface Temperatures 4.3 Thermal Properties of Soils 4.4 Theory of Soil Heat Transfer 4.5 Applications Problems and Exercises Chapter 5 Air Temperature and Humidity in the PBL 5.1 Factors Influencing Air Temperature and Humidity 5.2 Basic Thermodynamic Relations and Definitions 5.3 Static Stability 5.4 Mixed Layers and Inversions 5.5 Vertical Temperature and Humidity Profiles 5.6 Diurnal Variations 5.7 Applications Problems and Exercises Chapter 6 Wind Distribution in the PBL 6.1 Factors Influencing Wind Distribution 6.2 Geostrophic and Thermal Winds 6.3 The Effects of Friction 6.4 The Effects of Stability 6.5 Observed Wind Profiles 6.6 Diurnal Variations 6.7 Applications Problems and Exercises Chapter 7 An Introduction to Viscous Flows 7.1 Inviscid and Viscous Flows 7.2 Laminar and Turbulent Flows 7.3 Equations of Motion 7.4 Plane-Parallel Flows 7.5 Ekman Layers 7.6 Developing Boundary Layers 7.7 Heat Transfer in Fluids 7.8 Applications Problems and Exercises Chapter 8 Fundamentals of Turbulence 8.1 Instability of Flow and Transition to Turbulence 8.2 The Generation and Maintenance of Turbulence 8.3 General Characteristics of Turbulence 8.4 Mean and Fluctuating Variables 8.5 Variances and Turbulent Fluxes 8.6 Eddies and Scales of Motion 8.7 Applications Problems and Exercises Chapter 9 Semiempirical Theories of Turbulence 9.1 Mathematical Description of Turbulent Flows 9.2 Gradient-Transport Theories 9.3 Dimensional Analysis and Similarity Theories 9.4 Applications Problems and Exercises Chapter 10 Neutral Boundary Layers 10.1 Velocity-Profile Laws 10.2 Surface Roughness Parameters 10.3 Surface Stress and Drag Coefficient 10.4 Turbulence 10.5 Applications Problems and Exercises Chapter 11 Momentum and Heat Exchanges with Homogeneous Surfaces 11.1 The Monin-Obukhov Similarity Theory 11.2 Empirical Forms of Similarity Functions 11.3 Wind and Temperature Profiles 11.4 Drag and Heat Transfer Coefficients 11.5 Methods of Determining Momentum and Heat Fluxes 11.6 Applications Problems and Exercises Chapter 12 Evaporation from Homogeneous Surfaces 12.1 The Process of Evaporation 12.2 Potential Evaporation and Evapotranspiration 12.3 Modified Monin-Obukhov Similarity Relations 12.4 Micrometeorological Methods of Determining Evaporation 12.5 Applications Problems and Exercises Chapter 13 Marine Atmospheric Boundary Layer 13.1 Sea-Surface Characteristics 13.2 Momentum Transfer to the Sea Surface 13.3 Parameterization of Air-Sea Exchanges 13.4 Mean Profiles in the Marine Atmospheric Boundary Layer 13.5 Turbulence over Water 13.6 Applications Problems and Exercises Chapter 14 Nonhomogeneous Boundary Layers 14.1 Types of Surface Inhomogeneities 14.2 Step Changes in Surface Roughness 14.3 Step Changes in Surface Temperature 14.4 Air Modifications over Water Surfaces 14.5 Air Modifications over Urban Areas 14.6 Building Wakes and Street Canyon Effects 14.7 Other Topographical Effects 14.8 Applications Problems and Exercises Chapter 15 Agricultural and Forest Micrometeorology 15.1 Flux-Profile Relations above Plant Canopies 15.2 Radiation Balance within Plant Canopies 15.3 Wind Distribution in Plant Canopies 15.4 Temperature and Moisture Fields 15.5 Turbulence in Plant Canopies 15.6 Applications Problems and Exercises References Index
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  • 35
    Call number: AWI A11-96-0397
    Type of Medium: Monograph available for loan
    Pages: 76 Bl. : Ill., Kt., graph. Darst.
    Language: German
    Note: Heidelberg, Univ., Diss., 1988 , Inhaltsangabe: 1 Einleitung. - 1.1 Das Backgroundaerosol. - 1.2 Das Aerosol der Antarktis. - 2 Voraussetzungen und Grundlagen. - 2.1 Logistische Voraussetzungen: das Spurenstoffobservatorium. - 2.2 Meßtechnik: Schwermetallanalyse im Ultraspurenbereich. - 2.2.1 Schwermetallanalyse von Aerosolproben. - 2.2.2 Prinzip der Atomabsorptionsspektrometrie (AAS). - 3 Experimentelles. - 3.1 Probenvorbereitung und Filterbesaugung. - 3.2 Filterextraktion. - 3.3 AAS-Schwermetallanalyse. - 3.4 Überprüfung der Messungen. - 3.4.1 Nullpunktsdrift, Nachweisgrenzen und Reproduzierbarkeit. - 3.4.2 Standardüberprüfung. - 3.4.3 Matrixeffekt. - 3.4.4 Ausbeute der Extraktion. - 3.4.5 Beitrag des Filterblanks. - 3.4.6 Doppelmessungen. - 3.4.7 Zusammenstellung der Messfehler. - 4 Meßergebnisse. - 4.1 Berechnung der Luftkonzentrationen. - 4.2 Aussortieren kontaminierter Filter. - 4.2.1 Pb-Kontaminationen. - 4.2.2 Zn-Kontaminationen. - 4.3 Darstellung der Jahresgänge. - 4.4 Häufigkeitsverteilung der Konzentrationen. - 4.5 Mittelwerte und jahreszeitliche Schwankungen. - 5 Diskussion. - 5.1 Kontaminationen durch den Stationsbetrieb: theoretische Abschätzungen. - 5.1.1 Motorschlitten. - 5.1.2 Dieselgeneratorbetrieb. - 5.1.3 Müllverbrennung. - 5.1.4 Zusammenfassung. - 5.2 Quantitative Bewertung der Luftkonzentrationen. - 5.2.1 Charakterisierung des Meßortes. - 5.2.2 Literaturvergleich. - 5.3 Kurzfristige Variationen. - 6 Mineralstaubtransport und Schwermetall-Geochemie. - 6.1 Mineralstaubtransport in die Antarktis. - 6.2 Beiträge verschiedener Quellen zum Schwermetallbackground an der G.v.N.-Station. - 6.2.1 Maritimer Beitrag. - 6.2.2 Beitrag des Mineralstaubs. - 6.2.3 Vulkanischer Beitrag. - 6.2.4 Anthropogene Pb-Quellen. - 6.3 Anreicherungsfaktoren für Pb und Zn: kritische Betrachtungen. - 6.4 Pb-Flüsse. - 6.4.1 Berechnung des Pb-Flusses und der Pb-Konzentration im Oberflächenschnee an der G.v.N.-Station. - 6.4.2 Betrachtung der globalen atmosphärischen Pb-Flüsse. - 7 Ausblick. - Literaturverzeichnis.
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  • 36
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    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
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    Call number: ZSP-168-49
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 129 S. : graph. Darst.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 49
    Language: German
    Note: Zugl.: Kiel, Univ., Diss., 1988
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  • 37
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    Call number: ZSP-168-44
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 228 S. : graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 44
    Language: English
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  • 38
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    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
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    Call number: ZSP-168-47
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 167 S. : Ill., graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 47
    Language: German
    Note: Zugl.: Münster, Univ., Diss., 1986
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  • 39
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    Series available for loan
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
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    Call number: ZSP-168-52
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 118 S. : Ill., graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 52
    Language: German
    Note: Zugl.: Kiel, Univ., Diss., 1988
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  • 40
    Call number: AWI S2-92-0441 ; AWI G2-95-0239
    In: Developments in atmospheric science ; 17, Volume 17
    Type of Medium: Monograph available for loan
    Pages: XVIII, 425 Seiten , Illustrationen
    ISBN: 0444430148
    Series Statement: Developments in atmospheric science 17
    Language: English
    Note: Contents: List of Figures. - List of Tables. - 1. Introduction. - a. An Overview of Principal Component Analysis (PCA). - b. Outline of the Book. - c. A Brief History of PCA. - d. Acknowledgments. - 2. Algebraic Foundations of PCA. - a. Introductory Example: Bivariate Data Sets. - Monterey, California air temperatures. - Centering and rotating the data set. - Variances in the rotated frame. - Principal angles. - Principal variances. - Principal covariance. - Principal directions. - Principal components; principal directions as basis vectors. - Matrix representation. - The PCA property. - Invariance of the total variance under rotation. - Principal variances for standardized data sets. - PCA and estimates of the statistical parameters of normal populations. - PCA and the construction of Monte Carlo experiments. - Eigenvalues and eigenvectors of the covariance and scatter matrices. - b. Principal Component Analysis: Real-valued Scalar Fields. - t-centering the data set. - The scatter probe and the scatter matrix. - The eigenstructures of PCA. - The basic data set representations; analysis and synthesis formulas. - The PCA property. - Second-order properties of PCA; the total scatter . - The singular value decomposition (SVD) of a data set. - Second-order properties of PCA; correlations. - PCA characterized by the PCA property. - The asymptotic PCA property and dynamical systems. - PCA of spatial composites of data sets. - PCA of temporal composites of data sets. - c. Principal Component Analysis: Complex-valued Scalar Fields, and Beyond. - PCA of complex-valued data sets (C-PCA). - Complex algebra conventions. - The scatter probe and scatter matrix for C-PCA. - Derivation of the eigenstructures of C-PCA. - The fundamental formulas of C-PCA. - Generalization of PCA to quaternion-valued data sets (Q-PCA). - Matrix representations of complex and quaternion numbers. - PCA of matrix-valued data sets (M-PCA). - Reduction of M-PCA to C-PCA form. - d. Bibliographic Notes and Miscellaneous Topics. - Alternate interpretation of the scatter probe. - Numerical calculations of eigenstructures of a scatter matrix. - Some elementary properties of eigenstructures of a scatter matrix. - Sample space vs. state space: choosing the dual computation. - PCA for continuous domains. - PCA for continuous domains: the viewpoint of empirical orthogonal functions. - The sixteen possible domain pairs for PCA: abstract PCA. - 3. Dynamical Origins of PCA. - a. One-dimensional Hannonic Motion. - A spring-linked-mass model; general form. - A spring-linked-mass model; special form. - A numerical example of the asymptotic PCA property. - Further investigations of the asymptotic PCA property and of EOF's. - b. Two-dimensional Wave Motion. - Solution of a two-dimensional damped-wave model. - Demonstration of the asymptotic PCA property (forcing and friction absent). - Demonstration of the asymptotic PCA property (forcing and friction present). - Physical basis for eigenframe rotations. - c. Dynamical Origins of Linear Regression (LR). - From continuous to discrete solutions to the regression model. - The linear regression procedure. - Comparison of LRA and PCA. - d. Random Processes and Karhunen-Loeve Analysis. - Origins of random processes in linear settings. - Karhunen-Loeve representation of random data sets and comparison with PCA. - e. Stationary Processes and PCA. - Derivation of the PCA representation of a one-dimensional stationary process via a simple wave model. - Connections between PCA and stationary processes: the case of one dimension. - Connections between PGA and stationary processes: extension to two dimensions. - f. Bibliographic Notes. - 4. Extensions of PCA to Multivariate Fields. - a. Categories of Data and Modes of Analysis. - Examples. - Generalized notation: the concepts of "individual" and "variable" in PCA. - b. Local PCA of a General Vector Field. - The PCA formalism. - Squared correlations. - Variational origin of the scatter matrix. - Examples. - c. Global PCA of a General Vector Field: Time-Modulation Form. - The PGA formalism. - Squared correlations. - Degeneracy of global PGA to local PGA. - Variational origin of the scatter matrix. - d. Global PCA of a General Vector Field: Space-Modulation Form. - The PCA formalism. - Squared correlations. - Variational origin of the scatter matrix. - e. PCA of Spectral Components of a General Vector Field. - Fourier analysis of the vector field components. - The scatter matrix in the spectral setting. - Example of spectral PCA of a windfield. - f. Bibliographic Notes and Miscellaneous Topics. - The eight modes of analysis and Cattell's classifications. - Time-modulation PGA as a special case of matrix-valued PGA. - Applications to the PGA of wind fields. - Distinction between time-modulation PGA and complex PGA. - Applications to the PGA of storm tracks. - 5. Selection Rules for PCA. - a. Random Reference Data Sets. - b. Dynamical Origins of the Dominant-Variance Selection Rules. - A dynamical model. - Rationale for selection rules. - c. Rule A4. - Statistical basis and discussion. - Choice of λ0. - d. Rule N . - Statistical basis and discussion. - Adjustments for correlated data: effective sample size. - Asymptotic eigenvalues for large data sets. - e. Rule M. - f. Comments on Dominant-Variance Rules . - g. Dynamical Origins of the Time-History Selection Rules. - h. Rule KS2. - The white spectrum and the cumulative periodogram. - Statement of Rule KS2. - i. Rules AMPλ. - Fisher's test. - Siegel's test. - Statement of Rules AMPλ. - j. Rule Q. - k. Selection Rules for Vector-Valued Fields. - Local PCA rules. - Global PCA (time-modulated) rules. - Global PCA (space-modulated) rules. - I. A Space-map Selection Rule. - Canonic direction angles. - Differential relations between unit vectors and canonic direction angles. - An r-tile metric for comparing canonic direction angles. - Statistical aspects: critical values for class errors. - Statement of the selection rule. - m. Bibliographic Notes and Miscellaneous Topics. - Puzzles and problems underlying Rule N; the logarithmic eigenvalue curve. - Numerical intractability of the classical formulas for the eigenvalues of a random matrix. - Monte Carlo approaches to the eigenvalue distribution problem. - Comparison of Monte Carlo methods and asymptotic formulas for eigenvalue distributions. - The problem of closely spaced eigenvalues; tests for equal eigenvalues. - The generalized basis for dominant variance selection rules. - Parallel work in atomic physics. - 6. Factor Analysis (FA) and PCA. - a. Comparison of PCA, LRA, and FA. - Similarities between PCA, LRA, and FA. - Dissimilarities between PCA, LRA, and FA. - The usual algebraic form of FA; its PC and LR interpretations. - b. The Central Problems of FA. - The matrix formulation of FA. - The detailed sub-problems of FA. - c. Bibliographic Notes. - The selection rule problem in FA. - The parameter estimation problem in FA. - 7. Diagnostic Procedures via PCA and FA. - a. Dual Interpretations of a Data Set: State Space and Sample Space. - b. Interpreting E-frames in PCA State Space. - Example: graphical display of eigenvectors. - Rationales for interpreting eigenmaps and time series. - PCA as a means, rather than an end. - c. Informative and Uninformative E-frames in PCA State Space. - d. Rotating E-frames in PCA State Space (varimax). - A two-dimensional example of the varimax procedure. - The general varimax procedure. - The loss of the PCA property for rotated E-frames. - e. Projections onto E-frames in PCA State Space (procrustes). - Derivation of the procrustes technique. - Some observations on the generality of the procrustes technique. - f. Interpreting A-frames in PCA Sample Space. - g. Rotating A-frames in PCA Sample Space (varimax). - h. Projections onto A-frames in PCA Sample Space (procrustes). - i. Detecting Clusters of Points in PCA State or Sample Spaces. - Minimal spanning trees. - Defining cluster pairs, and te
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  • 41
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    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
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    Call number: ZSP-168-43
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 237 S. : Ill., graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 43
    Language: English
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  • 42
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    Call number: ZSP-168-45
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 145 S. : graph. Darst.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 45
    Language: German
    Note: Zugl.: Kiel, Univ., Diss., 1987
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  • 43
    Call number: ZSP-558-26
    In: Middle atmosphere program
    Type of Medium: Series available for loan
    Pages: 73 S. : Ill., graph. Darst.
    Language: English
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  • 44
    Monograph available for loan
    Monograph available for loan
    Dordrecht [u.a.] : Kluwer
    Call number: M 93.1059 ; AWI A6-92-0298 ; M 93.1094
    Description / Table of Contents: Atmospheric Tidal and Planetary Waves is written for workers in the fields of meteorology, climatology, aeronomy and space physics, and deals in a unified way with global scale dynamical processes within the lower, middle, and upper atmosphere. lrregular ultralong planetary waves with periods ranging from a few days to a few years are considered, as well as regular large-scale waves with basic periods of one (solar or lunar) day and one year, and the climatic mean flow (lumped together as tidal waves). The basic concept is the separation of the atmospheric flow into eigenmodes on a sphere (Hough functions). The sources and the meridional and vertical structure of these modes are discussed in detail, and Observations of tidal and planetary waves within the lower, middle, and upper atmosphere are interpreted in terms of Hough modes. The effects of nonlinear wave-wave interactions are outlined.
    Type of Medium: Monograph available for loan
    Pages: X, 348 S. , graph. Darst.
    ISBN: 9027726302
    Series Statement: Atmospheric sciences library 12
    Classification:
    Geodynamics
    Language: English
    Note: Table of Contents: Preface. - Chapter 1. lntroduction. - Chapter 2. Basic Equations. - 2.1. Hydrodynamic and Thermodynamic Equations. - 2.2. Equations of the Mean Flow. - 2.3. Equations of the Eddies. - 2.4. Energy Balance. - 2.5. Vorticity and Divergence. - 2.6. Linearization. - 2.7. Eliassen-Palm Flux. - 2.8. Ertel Potential Vorticity. - 2.9. Diffusive Separation of Atmospheric Constituents. - 2.10. Spherical Harmonics. - 2.11. Hermite Functions. - Chapter 3. External Energy Sources. - 3.1. Solar Irradiance. - 3.2. Solar Heat Input into Upper Atmosphere. - 3.3. Solar Heat Input into Lower and Middle Atmosphere. - 3.4. Lunar Gravitational Tidal Energy. - 3.5. Solar Wind Energy. - Chapter 4. Internal Energy Sources and Sinks. - 4.1. Eddy Viscosity. - 4.2. Eddy Heat Conduction. - 4.3. Latent Heat. - 4.4. Newtonian Cooling. - 4.5. Rayleigh Friction. - 4.6. Ion Drag. - 4.7. Feedback between Large-Scale Eddies and Mean Flow. - Chapter 5. Horizontal Modal Structure. - 5.1. Separation of Variables. - 5.2. Eigenvalues of Laplace's Equations. - 5.3. Gravity Waves. - 5.4. Rossby- Haurwitz Waves. - 5.5. Kelvin Waves and Yanai Waves. - 5.6. Low Frequency Waves with Positive Eigenvalues. - 5.7. Class Il Waves of Wavenumber m = 0. - 5.8. Diurnal Tides. - 5.9. Dynamo Action of Tidal Winds. - 5.10. Rossby Waves Migrating within Mean Zonal Flow. - 5.11. Influence of Zonal Mean Flow on Rossby-Haurwitz Waves. - 5.12. Salutions of Inhomogeneous Laplace Equations. - Chapter 6. Vertical Modal Structure. - 6.1. Characteristic Waves. - 6.2. Vertical Wavenumber. - 6.3. Particular Salutions. - 6.4. Boundary Conditions. - 6.5. Normal Modes. - 6.6. Height Structure of External Waves. - 6.7. Directly Driven Circulation Cells. - 6.8. Indirectly Driven Circulation Cells. - 6.9. Height Structure of Internal Waves. - 6.10. Impulsive Heat Input. - 6.11. Ray Tracing of Rossby Waves. - 6.12. Mode Conversion. - 6.13. Baroclinic Instability. - Chapter 7. Nonlinear Wave Propagation. - 7.1. Nonlinear Coupling between Rossby- Haurwitz Waves. - 7.2. Analytic Salutions for Weak Coupling of Rossby-Haurwitz Waves. - 7.3. Rossby- Haurwitz Wave Coupling in Realistic Mean Flow. - 7.4. Homogeneous and Isotropic Turbulence. - 7.5. Space-Time Analysis. - 7.6. Nonlinear Normal Mode Initialization. - 7.7. Lorenz Attractor. - 7.8. Logistic Difference Equation. - 7.9. Multiple Equilibria. - Chapter 8. Tidal Waves. - 8.1. Seasonal Tides within Lower and Middle Atmosphere (m = 0). - 8.2. Quasi-Stationary Seasonal Waves (m 〉 0). - 8.3. Climatic Mean Flow. - 8.4. Seasonal Tides within Upper Atmosphere. - 8.5. Migrating Solar Diurnal Tides within Lower and Middle Atmosphere. - 8.6. Migrating Solar Diurnal Tides within Upper Atmosphere. - 8.7. Nonmigrating Solar Diurnal Tides. - 8.8. Lunar Tides. - 8.9. Electromagnetic Effects of Tidal Waves. - 8.10. Energy and Momentum Deposition of Solar Diurnal Tides. - Chapter 9. Planetary Waves. - 9.1. Extratropical Transients. - 9.2. Southern Oscillation. - 9.3. Forty-Day Oscillations. - 9.4. Transients in the Tropical Middle Atmosphere. - 9.5. Fluctuations of Atmospheric Angular Momentum. - 9.6. Sudden Stratospheric Warnings. - 9.7. Thermospheric Response to Solar EUV Fluctuations. - 9.8. Thermospheric Storms. - 9.9. Solar Activity Effects within Middle and Lower Atmosphere. - Chapter 10. Epilogue. - References. - Subject Index.
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  • 45
    Monograph available for loan
    Monograph available for loan
    Bindlach : Gondrom
    Call number: AWI P5-17-90907
    Type of Medium: Monograph available for loan
    Pages: 126 S. , überwiegend Ill. , 28 x 32 cm
    Edition: Sonderausg.
    ISBN: 3811206044
    Language: German
    Note: Aus d. Engl. übers.
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  • 46
    Monograph available for loan
    Monograph available for loan
    Cambridge : World Data Center 'C' for Glaciology, Scott Polar Research Institute
    Call number: AWI G7-19-92220
    Type of Medium: Monograph available for loan
    Pages: VI, 37 Seiten , 30 cm
    Language: English
    Note: Contents: Preface. - Foreword. - Subject sections. - General articles. - Instruments and methods. - Theory of radio echo-sounding. - Applications to land ice. - Applications to floating ice. - Ancillary methods and observations. - Popular articles. - Theses and abstracts of theses.
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  • 47
    Monograph available for loan
    Monograph available for loan
    Bremerhaven : Alfred-Wegener-Institut für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-994(1986/1987)
    In: Zweijahresbericht / Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung, [1]
    Type of Medium: Monograph available for loan
    Pages: 160 Seiten , Illustrationen
    Series Statement: Zweijahresbericht / Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung [1]
    Language: German
    Note: Inhaltsverzeichnis 1. Einleitende Übersicht 2. Nationale und internationale Zusammenarbeit 3. Forschungsarbeiten 3.1 Expeditionen 3.1.1 ANT 1V/3 (mit Kottas-und Filchner-Expeditionen) 3.1.2 ANT IV/4 3.1.3 ANT V/1, 2, 3 Die erste Winter-Weddellmeer-Expedition 3.1.4 ANT V/4 3.1.5 ANT V/5 3.1.6 ARK IV 3.2 Forschungsarbeiten der Sektionen 3.2.1 Biologie I (Zoologie) 3.2.2 Biologie II (Botanik + Mikrobiologie) 3.2.3 Chemie 3.2.4 Geologie 3.2.5 Geophysik, Glaziologie 3.2.6 Meeresphysik und Meßwesen 3.2.7 Theoretische Physik des Ozeans und der Atmosphäre 3.2.8 Experimentelle Physik des Ozeans und der Atmosphäre 3.3 Aus den Forschungsarbeiten 4. Logistik 4.1 Antarktisstationen 4.2 FS "Polarstern" und FS "Victor Hensen" 4.3 Flugzeuge und Hubschrauber 4.4 Schneefahrzeuge 4.5 Hafenlager 5. Zentrale Einrichtungen 5.1 Öffentlichkeitsarbeit 5.2 Bibliothek 5.3 Rechenzentrum 5.4 Elektroniklabor 6. Personeller Aufbau des Instituts und Entwicklung des Institutshaushalts in den Jahren 1986 und 1987 6.1 Personal 6.2 Haushalt Anhang I Anhang II Anhang III Anhang IV Anhang V
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  • 48
    Monograph available for loan
    Monograph available for loan
    Bremerhaven : Alfred-Wegener-Institut für Polar- und Meeresforschung
    Call number: AWI P3-19-92102
    Type of Medium: Monograph available for loan
    Pages: 80 Seiten , Illustrationen , 24 cm
    Language: German
    Note: INHALTSVERZEICHNIS: Einleitung u. Vorbemerkungen . - I. KNOCHENBRÜCHE UND VERRENKUNGEN. - 1.00 Knochenbrüche (nur die häufigsten). - 1.10 Geschlossene Knochenbrüche. - 1.11 Radiusfraktur. - 1.12 Schlüsselbeinbruch. - 1.13 Fingerbrüche. - 1.14 Zehenbrüche. - 1.15 Außenknöchelbruch (Verletzungen am Außenknöchel). - 1.20 Offene Knochenbrüche (allgemeine Behandlungs­grundsätze). - 2.00 Verrenkungen (Schulter). - 3.00 Nasenbluten (Methoden der Blutstillung). - 4.00 Schädelverletzungen (Allgemeines). - 4.10 Schädelhirntrauma (Leitsymptome). - 4.11 Vorgehen. - 4.20 Befunderhebungsbogen (Glasgow-Coma-Scale). - 5.00 Sonstige Verletzungen. - 5.10 Stark blutendeWunden. - 5.20 Offene Thoraxverletzungen. - 5.30 Offene Bauchverletzungen. - II. THERMISCHE SCHÄDEN. - 1.00 Verbrennungen. - 1.10 Sonnenbrand. - 1.20 Verblitzen der Augen (Schneeblindheit). - 2.00 Erfrierungen. - 3.00 Unterkühlung. - III. SCHÄDIGUNG DURCH CHEMIKALIEN (Vergiftung). - 1.00 Vergiftung durch Benzin und Diesel. - 1.10 Einwirkung von Batteriesäure. - 1.20 Rauch und Reizgasvergiftung. - IV. SONSTIGES. - 1.00 Appendicitis. - 2.00 Zahnschmerzen. - 3.00 Eingeschleppte Infektionserkrankungen. - 3.10 Malaria. - V. TECHNIKEN. - 1.00 Zur Technik der intramuskulären Injektion. - 2.00 Das Anlegen einer Infusion. - 3.00 Die Anwendung der Kramerschiene. - Anhang. - Die Ausstattung der Sankiste.
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  • 49
    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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  • 50
    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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  • 51
    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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  • 52
    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
    Location: Lower compact magazine
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  • 53
    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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  • 54
    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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  • 55
    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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  • 56
    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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  • 57
    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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  • 58
    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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    Call number: AWI G7-19-92305
    Type of Medium: Monograph available for loan
    Pages: 116 Blätter
    Language: English
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  • 60
    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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  • 61
    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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    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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    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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    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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    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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    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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  • 67
    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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    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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    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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    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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    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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  • 72
    Call number: ZSP-558-24 ; MOP 46209 / Mitte
    In: Middle atmosphere program
    Type of Medium: Series available for loan
    Pages: 97 S.
    Language: English
    Location: AWI Reading room
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  • 73
    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.
    Location: Upper compact magazine
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  • 74
    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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