ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Books  (2)
  • Other Sources  (54)
  • 2000-2004  (44)
  • 1990-1994  (12)
Collection
  • Books  (2)
  • Articles  (315)
  • Other Sources  (54)
Source
Keywords
Publisher
Language
Years
Year
Branch Library
Reading Room Location
  • 1
    facet.materialart.
    Unknown
    16S rDNA-based phylogeny of sulfur-oxidizing bacterial endosymbionts in marine bivalves from cold-seep habitats (2003)
    Inter Research
    In:  Marine Ecology Progress Series, 249 . pp. 39-51.
    Details
    Publication Date: 2018-05-30
    Description: The phylogenetic relationship of sulphur-oxidising endosymbiotic bacteria from bivalves of the families Vesicomyidae (Calyptogena sp. C1, Calyptogena sp. C3), Solemyidae (Acharax sp.) and Thyasiridae (Conchocele sp.) from cold-seep habitats were determined by 16S rDNA nucleotide sequence analyses. The endosymbiotic bacteria form distinct groups within the gamma-Proteobacteria and are well separated from each other and from free-living sulphur-oxidising bacteria of the genera Beggiatoa, Halothiobacillus and Thiomicrospira. The endosymbiotic bacteria of Acharax sp. from cold seeps off Oregon, Indonesia and Pakistan have sequences highly similar to each other but quite distinct from other thiotrophic endosymbionts. This includes endosymbionts from Solemya spp., to which they are distantly related. Symbiotic bacteria of Conchocele sp. from a cold seep in the Sea of Okhotsk are similar to those of Bathymodiolus thermophilus and related species, as shown by their overall sequence similarity and by signature sequences. The endosymbiotic bacteria of Calyptogena spp. from cold seeps off Oregon and Pakistan are closely related to those of other vesicomyids. Endosymbiont species found off Oregon corresponded to 2 different clusters of Calyptogena spp. symbionts in the same samples. The results corroborate the hypothesis of a monophyletic origin of the symbionts in vesicomyid clams, and support the existence of deeply branching groups in solemyid symbionts and of divergent lines and distribution for thyasirid symbionts. The results also indicate that certain symbiont species cluster according to the depth distribution of their hosts, and that in consequence host species together with their symbionts may have undergone depth-specific adaptation and evolution.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 2
    facet.materialart.
    Unknown
    Aerodynamic characteristics of a propeller powered high lift semispan wing (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: An experimental investigation was conducted on the engine/airframe integration aerodynamics for potential high-lift aircraft configurations. The model consisted of a semispan wing with a double-isolated flap system and a Krueger leading edge device. The advanced propeller and the powered nacelle were tested and aerodynamic characteristics of the combined system are presented. It was found that the lift coefficient of the powered wing could be increased by the propeller slipstream when the rotational speed was increased and high-lift devices were deployed. Moving the nacelle/propeller closer to the wing in the vertical direction indicated higher lift augmentation than a shift in the longitudinal direction. A pitch-down nacelle inclination enhanced the lift performance of the system much better than vertical and horizontal variation of the nacelle locations and showed that the powered wing can sustain higher angles of attack near maximum lift performance.
    Keywords: AERODYNAMICS
    Type: AIAA PAPER 92-0388
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    Alexander von Humboldts Forschungsfahrt auf dem Kaspischen Meer 1829 (1994)
    Deutsche Gesellschaft für Meeresforschung
    In:  DGM-Mitteilungen, 1994 (3). pp. 3-9.
    Details
    Publication Date: 2016-11-03
    Type: Article , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 4
    Unknown
    American economic policy in the 1990s (2002)
    Cambridge, Mass : MIT Press
    Details
    Keywords: United States, Economic conditions, 1981-2001. ; United States, Economic policy, 1993-2001.
    Notes: U.S. monetary policy during the 1990s / N. Gregory Mankiw -- Fiscal policy and Social Security policy during the 1990s / Douglas W. Elmendorf, Jeffrey B. Liebman, David W. Wilcox -- Tax policy from 1990 to 2001 / Eugene Steuerle -- Between meltdown and moral hazard : the international monetary and financial policies of the Clinton administration / J. Bradford DeLong, Barry Eichengreen -- International trade policy in the 1990s / Robert Z. Lawrence -- The "new economy" and information technology policy / Pamela Samuelson, Hal R. Varian -- Antitrust policy in the Clinton administration / Robert E. Litan, Carl Shapiro -- Energy policy during the 1990s / Paul L. Joskow -- National environmental policy during the Clinton years / Robert W. Hahn, Robert N. Stavins -- Putting students and workers first? : education and labor policy in the 1990s / Alan B. Krueger, Cecelia E. Rouse -- The Clinton legacy for America's poor / Rebecca M. Blank, David T. Ellwood -- Health policy in the Clinton era : once bitten, twice shy / David Cutler, Jonathan Gruber -- Medicare / Joseph P. Newhouse -- The process of economic policy-making during the Clinton administration / Jonathan M. Orszag, Peter R. Orszag, Laura D. Tyson
    Pages: xii, 1119 p.
    ISBN: 0-585-44277-0
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=70951
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    E-Book (German National Licenses)
  • 5
    facet.materialart.
    Unknown
    Anaerobic oxidation of methane above gas hydrates (2003)
    Inter Research
    In:  Marine Ecology Progress Series, 264 . pp. 1-14.
    Details
    Publication Date: 2019-07-02
    Description: At Hydrate Ridge (HR), Cascadia convergent margin, surface sediments contain massive gas hydrates formed from methane that ascends together with fluids along faults from deeper reservoirs. Anaerobic oxidation of methane (AOM), mediated by a microbial consortium of archaea and sulfate-reducing bacteria, generates high concentrations of hydrogen sulfide in the surface sediments. The production of sulfide supports chemosynthetic communities that gain energy from sulfide oxidation. Depending on fluid flow, the surface communities are dominated either by the filamentous sulfur bacteria Beggiatoa (high advective flow), the clam Calyptogena (low advective flow), or the bivalve Acharax (diffusive flow). We analyzed surface sediments (0 to 10 cm) populated by chemosynthetic communities for AOM, sulfate reduction (SR) and the distribution of the microbial consortium mediating AOM. Highest AOM rates were found at the Beggiatoa field with an average rate of 99 mmol m-2 d-1 integrated over 0 to 10 cm. These rates are among the highest AOM rates ever observed in methane-bearing marine sediments. At the Calyptogena field, AOM rates were lower (56 mmol m-2 d-1). At the Acharax field, methane oxidation was extremely low (2.1 mmol m-2 d-1) and was probably due to aerobic methane oxidation. SR was fueled largely by methane at flow-impacted sites, but exceeded AOM in some cases, most likely due to sediment heterogeneity. At the Acharax field, SR was decoupled from methane oxidation and showed low activity. Aggregates of the AOM consortium were abundant at the fluid-impacted sites (between 5.1 × 1012 and 7.9 × 1012 aggregates m-2) but showed low numbers at the Acharax field (0.4 × 1012 aggregates m-2). A transport-reaction model was applied to estimate AOM at Beggiatoa fields. The model agreed with the measured depth integrated AOM rates and the vertical distribution. AOM represents an important methane sink in the surface sediments of HR, consuming between 50 and 100% of the methane transported by advection.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 6
    Series available for loan
    Series available for loan
    Antarctic research : proceedings of a symposium, held at Potsdam GDR, 11-14 September 1989; Vol. 2: Glaciology and periglacial processes, sea ice analysis, hydrology, life sciences (1990)
    Berlin : Nationalkomitee für Geodäsie und Geophysik bei der Akademie der Wissenschaften der DDR
    Associated volumes
    Details Availability
    Call number: Q 2434(16) ; MOP Per 581(1/16) ; ZSP-319/A-16
    In: Geodätische und Geophysikalische Veröffentlichungen : Reihe 1, Heft 16
    In: Antarctic research / edited by H.-J. Paech, D. Fritzsche, Vol. 2
    Type of Medium: Series available for loan
    Pages: Seiten 281-511 , Illustrationen
    ISSN: 0533-7577
    Series Statement: Geodätische und Geophysikalische Veröffentlichungen : Reihe 1 16
    Language: English
    Note: Volume II: Glaciology & Periglacial Processes. - Soviet-French cooperation on the isotopic research of cores from Dome B - Vostok - Komsomolskaya - Mirny ice taverse, East Antarctica / C. Lorius ; Ye. S. Korotkevich ; N. I. Barkov ; V. N. Petrov. - On the genesis of the Shackleton Ice Shelf according to oxygen-isotope data / L. Savatyugin; R. Vaikmäe. - G.D.R isotope research in Queen Maud Land (Abstract) / R. Haberlandt. - Isotope data from ice-cored moraines suggest a higher ice sheet surface in Central Queen Maud Land (Antarctica) during cold stages / W.-D. Hermichen ; P. Kowski ; R. Vaikmäe. - An oxygen-18 thermometer from snow of Northern Queen Maud Land / Antarctica / W.-D. Hermichen ; P. Kowski ; R. Vaikmäe. - Initial processes of pedogenesis in the Schirmacher Oasis (Abstract) / W. Krüger ; J. Balke. - Periglacial of Antarctic continent as a source of paleoglacial information / V. I. Bardin. - Sea Ice Analysis. - The major features of ice conditions in the Bellingshausen Sea / V. V. Yevsyeyev. - The duration of the cycle of the Atlantic ice massif existence and typification of the processes causing its isolation / A. M. Kozlovsky. - Hydrology. - The hydrography of the Schirmacher Oasis (Abstract) / W. Richter. - Meteorological and hydrological conditions of meltwater genesis and distribution in Antarctica / A. Loopmann. - Hydrochemical and isotope hydrological investigations in the Bunger Oasis / E. Kaup ; V. Klokov ; R. Vaikmäe ; D. Haendel ; R. Zierath. - Extremely C-13 enriched biomass in a freshwater environment: examples from Antarctic lakes / U. Wand ; K. Mühle. - Biology & Human Biology. - Das Meereis als Lebensraum / G.Hernpel Das biologische Programm "Bellingshausen" - Bericht über die vergangenen 10 Jahre und die Konzeption künftiger Forschungsarbeit / H.Oehme. - Ecological studies in the southern gigant petrel Macronectes giganteus on southwestern parts of King George Island / H.-U. Peter ; M. Kaiser ; A. Gebauer. - Development, torpor and energy balance of black-bellied storm-petrel chicks (Fregatta tropica) (Abstract) / T. Nadler ; H. Mix. - Morphometrical and ecological differences between south polar and brown skuas of Fildes Peninsula, King George Island, South Shetland Islands / H.-U. Peter ; M. Kaiser ; A. Gebauer. - Behavioural biology of the Antarctic tern Sterna vittata (Gmelin, 1789) / A. Gebauer ; M. Kaiser ; H.-U. Peter. - Thermoregulation in the Antarctic tern Sterna vittata (Gmelin, 1789) / M. Kaiser ; A. Gebauer ; H.-U. Peter. - Parasitiological studies in the Antarctic by scientists from the G.D.R / K. Feiler. - New Amphipods from the sublittoral of King George Island - Faunistic contribution to ecological investigations / M. Rauschert. - The freshwater algae of the Schirmacher Oasis - Queen Maud Land / H. Pankow ; D. Haendel ; H. Richter. - The lichens of the Schirmacher Oasis (East Antarctica) / W. Richter. - The bryoflora of the Schirmacher Oasis (East Antarctica) in relations to hydrosphere and cryosphere / W. Richter. - The animals of the Schirmacher Oasis (East Antarctica) / W. Richter ; D. Haendel ; P. Junghans. - Indoor climate and long-time-stays in Arctic and Antarctic regions (Abstract) / W. Bischof ; G. Schrader ; L. Banhidi. - Do psychical factors have an influence on the immunofunction of polar researchers and how could objective evidence be obtained? / F. Wietschel ; G. Schrader.
    Location: MOP - must be ordered
    Location: AWI Reading room
    Branch Library: GFZ Library
    Branch Library: GFZ Library
    Branch Library: AWI Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    BOOK
    Link to Library Catalog
    get availability status
  • 7
    facet.materialart.
    Unknown
    Caribbean round-trip ticket: The migration behavior of female hawksbill turtles recorded using data loggers. (2003)
    In:  [Paper] In: 22. Annual Symposium on Sea Turtle Biology and Conservation, 04.-07.04.2002, Miami, USA ; pp. 54-55 .
    Details
    Publication Date: 2017-05-31
    Type: Conference or Workshop Item , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 8
    facet.materialart.
    Unknown
    Cloud inhomogeneity and broadband solar fluxes (2003)
    AGU (American Geophysical Union)
    In:  Journal of Geophysical Research: Atmospheres, 108 (D19). Art.No. 4599.
    Details
    Publication Date: 2018-02-06
    Description: Simplified representations of spatially inhomogeneous (three-dimensional (3-D)) clouds in radiative transfer models provide systematic errors when calculating solar broadband radiative fluxes. An example is the neglect of horizontal photon transports as it is the case for the independent column approximation (ICA). The present work tries to quantify and interpret these errors on the basis of a large set of 3-D mixed phase cloud scenarios with 3-D varying extinction coefficients, scattering phase functions, and single-scattering albedos. The cloud cases result from a mesoscale atmospheric circulation model with detailed cloud microphysics. Domain-averaged cloud radiative fluxes are calculated by means of a Monte Carlo radiative transfer model. Depending on cloud type and solar zenith angle (SZA) the differences between 3-D and ICA results range from +20 W m−2 to −30 W m−2 for the upward reflected fluxes and from +10 W m−2 to −7 W m−2 for the absorbed fluxes. The mean (averaged over all cloud realizations) errors of the ICA-based upward fluxes vary between 5 W m−2 overestimation at 15°SZA and 6 W m−2 underestimation at 75°SZA. The ICA underestimates the absorbed flux by ∼1–2 W m−2 for most SZA except for 75°. It is found that neglecting the horizontal variability of the absorption and scattering properties of the cloud hydrometeors leads to a general underestimation of solar broadband absorption by as much as 15 W m−2 with average values between 4 W m−2 at small SZA and 1 W m−2 at large SZA.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 9
    facet.materialart.
    Unknown
    Comparative Efficacy of Potential Chemical Disinfectants for Treating Unballasted Vessels (2004)
    Elsevier
    In:  Journal of Great Lakes Research, 30 (1). pp. 201-216.
    Details
    Publication Date: 2016-03-31
    Description: The release of ballast water from transoceanic vessels is a major vector for the introduction of nonindigenous species into the Laurentian Great Lakes. This study assessed the effectiveness of treating unballasted transoceanic vessels using three different biocides: glutaraldehyde plus a surfactant adjuvant (Disinfekt 1000®), sodium hypochlorite (NaOCl), and SeaKleen™ (menadione and menadione metabisulfite 2:8). Efficacy against several classes of aquatic organisms was evaluated using 24 h acute toxicity experiments and 11 day ballast tank simulation experiments. The results indicate substantial, compound-specific variations in organism sensitivity. For water-only exposures, NaOCl and SeaKleen™ were most effective: NaOCl had the lowest LC90 (90% lethal concentration value) for the oligochaete Lumbriculus variegatus (1.0 mg L−1), while SeaKleen™ had the lowest LC90 for the amphipod Hyalella azteca (2.5 mg L−1). Sediments profoundly affected efficacy, particularly for NaOCl: At a 1:4 sediment-water ratio, the estimated LC90 for L. variegatus was 〉 2,000 mg L−1. Sediment quality also impacted efficacy: Sediments with higher organic carbon content typically required greater biocide concentrations to achieve comparable toxicity. Efficacy was further evaluated with 11 day bioassays using sediments from unballasted vessels. Results indicated that NaOCl and Disinfekt 1000® were more effective than predicted based on small scale sediment-water exposures. Overall, the data suggest that although NaOCl may be effective under water-only conditions, the higher concentrations required in the presence of sediments may cause corrosion problems for ballast tanks. Because of this, less reactive, non-oxidizing biocides such as SeaKleen™ and Disinfekt 1000® may be better candidates for treating sedimented tanks.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 10
    facet.materialart.
    Unknown
    Comparison of 2D Finite Element Modeling Assumptions with Results From 3D Analysis for Composite Skin-Stiffener Debonding (2004)
    In:  CASI
    Details
    Publication Date: 2018-06-05
    Description: The influence of two-dimensional finite element modeling assumptions on the debonding prediction for skin-stiffener specimens was investigated. Geometrically nonlinear finite element analyses using two-dimensional plane-stress and plane-strain elements as well as three different generalized plane strain type approaches were performed. The computed skin and flange strains, transverse tensile stresses and energy release rates were compared to results obtained from three-dimensional simulations. The study showed that for strains and energy release rate computations the generalized plane strain assumptions yielded results closest to the full three-dimensional analysis. For computed transverse tensile stresses the plane stress assumption gave the best agreement. Based on this study it is recommended that results from plane stress and plane strain models be used as upper and lower bounds. The results from generalized plane strain models fall between the results obtained from plane stress and plane strain models. Two-dimensional models may also be used to qualitatively evaluate the stress distribution in a ply and the variation of energy release rates and mixed mode ratios with delamination length. For more accurate predictions, however, a three-dimensional analysis is required.
    Keywords: Composite Materials
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 11
    facet.materialart.
    Unknown
    Cruise Report R.V. Poseidon Cruise Nr. 291 [POS291] (2002)
    In:  UNSPECIFIED, 43 pp.
    Details
    Publication Date: 2018-01-26
    Description: Dates, Ports: 26.6.2002 (Reykjavik) – 2.7.2002 (Akureyri) – 14.7.2002 (Reykjavik), Research subject: Hydrothermal studies of Grimsey Field, volcanic studies of Kolbeinsey Ridge, Chief Scientist: Prof. Dr. Colin W. Devey, Univ. Bremen, Number of Scientists: 22 (2 legs), Project: DFG De572/14-1 Fracture Zone
    Type: Report , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 12
    facet.materialart.
    Unknown
    Der Befall von Fischen aus dem Wattenmeer und dem Nordatlantik 1988 - 1990 mit Nematodenlarven und eine Bibliographie über parasitische Nematoden in Fischen und Seesäugern (1992)
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 219 . UNSPECIFIED, 205 pp.
    Details
    Publication Date: 2014-06-03
    Type: Report , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 13
    facet.materialart.
    Unknown
    Der Einfluss des 11-jährigen Sonnenfleckenzyklus und der QBO auf die Atmosphäre - eine Modellstudie = The Influence of the 11-Year Solar Cycle and the QBO on the Atmosphere - a model study (2003)
    In:  (PhD/ Doctoral thesis), Freie Universität Berlin, Berlin, Germany, 250 pp
    Details
    Publication Date: 2019-03-27
    Description: Diese Arbeit zeigt den Einfluss von 11-jährig variierenden solaren UV-Strahlungsänderungen auf die Atmosphäre anhand von Studien mit einem dreidimensionalen Modell der Mittleren Atmosphäre (Freie Universität Berlin Climate Middle Atmosphere Model (FUB-CMAM)). Erstmals kann der Mechanismus für die Übertragung des Sonnensignales von der oberen Stratosphäre bis in die Troposphäre, wie er bisher verstanden und aus Beobachtungen abgeleitet wurde, mit einem Modell nachvollzogen werden. Im FUB-CMAM wurde zuerst die kurzwellige Strahlungsparametrisierung verfeinert, um die stark wellenlängenabhängigen solaren UV-Strahlungsänderungen mit dem 11-jährigen Sonnenfleckenzyklus genauer vorgeben zu können. Die Ergebnisse der Simulationen mit dieser erweiterten Modellversion wurden im Rahmen eines internationalen Modellvergleich-Projektes GRIPS mit den Ergebnissen von vier anderen Klimamodellen verglichen und die Defizite dieser Simulationen untereinander und im Vergleich zu Beobachtungen analysiert. Unter Berücksichtigung dieser Ergebnisse wurden weitere Experimente mit dem FUB-CMAM durchgeführt, in denen systematisch die äquatoriale Windklimatologie verbessert wurde. Die Anpassung der äquatorialen Modellwinde an beobachtete Winde über die gesamte Stratosphäre mit einer quasi zweijährigen Windschwingung (Quasi-Biennial Oscillation) in der unteren und einer halbjährigen Schwingung (Semi-Annual Oscillation) in der oberen Stratosphäre stellte einen entscheidenden Schritt für die erste realistische Repräsentation des beobachteten stratosphärischen Sonnensignales im nordhemisphärischen Winter in einem Modell dar. Die Ergebnisse zeigen, dass das direkte Sonnensignal aus der oberen Stratosphäre über dynamische Wechselwirkungsmechanismen verstärkt und bis in die Troposphäre hinein übertragen wird. Neben einer Erwärmung der mittleren Atmosphäre im Sonnenfleckenmaximum ergeben sich auch Änderungen von Zirkulationsmustern in der Troposphäre. Das Modell ist nicht nur in der Lage das Sonnensignal, sondern auch die beobachtete Wechselwirkung mit den tropischen Windschwingungen in den hohen Breiten zu reproduzieren: Wie in der Realität treten im Modell große Stratosphärenerwärmungen in der Westphase der QBO unter Sonnenfleckenmaximum-Bedingungen auf. Das Verständnis für den Einfluss der Sonnenvariabilität auf das Klima ist für eine genauere Bestimmung der natürlichen Variabilität der Atmosphäre von außerordentlicher Bedeutung. Damit können der anthropogen bedingte Anteil der globalen Erwärmung besser abgeschätzt und künftige Klimaentwicklungen genauer vorhergesagt werden. Die Arbeit zeigt unter anderem, dass die indirekten Zirkulationsänderungen aufgrund von direkten UV-Strahlungsänderungen in der Stratosphäre nicht zu vernachlässigende Größenordnungen erreichen und daher bei zukünftigen Klimaabschätzungen ergänzend zu den anthropogenen Faktoren berücksichtigt werden sollten.
    Type: Thesis , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 14
    facet.materialart.
    Unknown
    Effect of Assumed Damage and Location on the Delamination Onset Predictions for Skin-Stiffener Debonding (2004)
    In:  CASI
    Details
    Publication Date: 2018-06-05
    Description: The difference in delamination onset predictions based on the type and location of the assumed initial damage are compared in a specimen consisting of a tapered flange laminate bonded to a skin laminate. From previous experimental work, the damage was identified to consist of a matrix crack in the top skin layer followed by a delamination between the top and second skin layer (+45 deg./-45 deg. interface). Two-dimensional finite elements analyses were performed for three different assumed flaws and the results show a considerable reduction in critical load if an initial delamination is assumed to be present, both under tension and bending loads. For a crack length corresponding to the peak in the strain energy release rate, the delamination onset load for an assumed initial flaw in the bondline is slightly higher than the critical load for delamination onset from an assumed skin matrix crack, both under tension and bending loads. As a result, assuming an initial flaw in the bondline is simpler while providing a critical load relatively close to the real case. For the configuration studied, a small delamination might form at a lower tension load than the critical load calculated for a 12.7 mm (0.5") delamination, but it would grow in a stable manner. For the bending case, assuming an initial flaw of 12.7 mm (0.5") is conservative, the crack would grow unstably.
    Keywords: Aircraft Stability and Control
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 15
    facet.materialart.
    Unknown
    Expeditions in Siberia 2003 (2004)
    AWI, Alfred-Wegener-Institut für Polar- und Meeresforschung
    In:  Berichte zur Polar- und Meeresforschung, 489 . AWI, Alfred-Wegener-Institut für Polar- und Meeresforschung, Bremerhaven, 231 pp.
    Details
    Publication Date: 2015-04-22
    Type: Report , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 16
    facet.materialart.
    Unknown
    Fatigue Life Methodology for Bonded Composite Skin/Stringer Configurations (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A methodology is presented for determining the fatigue life of bonded composite skin/stringer structures based on delamination fatigue characterization data and geometric nonlinear finite element analyses. Results were compared to fatigue tests on stringer flange/skin specimens to verify the approach.
    Keywords: Composite Materials
    Type: Fifteenth Technical Conference; Jan 01, 2000; Unknown|Proceedings of the American Society for Composites, Fifteenth Technical Conference; 729-736
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 17
    facet.materialart.
    Unknown
    Fatigue Life Methodology for Bonded Composite Skin/Stringer Configurations (2001)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: A methodology is presented for determining the fatigue life of composite structures based on fatigue characterization data and geometric nonlinear finite element (FE) analyses. To demonstrate the approach, predicted results were compared to fatigue tests performed on specimens which represented a tapered composite flange bonded onto a composite skin. In a first step, tension tests were performed to evaluate the debonding mechanisms between the flange and the skin. In a second step, a 2D FE model was developed to analyze the tests. To predict matrix cracking onset, the relationship between the tension load and the maximum principal stresses transverse to the fiber direction was determined through FE analysis. Transverse tension fatigue life data were used to -enerate an onset fatigue life P-N curve for matrix cracking. The resulting prediction was in good agreement with data from the fatigue tests. In a third step, a fracture mechanics approach based on FE analysis was used to determine the relationship between the tension load and the critical energy release rate. Mixed mode energy release rate fatigue life data were used to create a fatigue life onset G-N curve for delamination. The resulting prediction was in good agreement with data from the fatigue tests. Further, the prediction curve for cumulative life to failure was generated from the previous onset fatigue life curves. The results showed that the methodology offers a significant potential to Predict cumulative fatigue life of composite structures.
    Keywords: Composite Materials
    Type: NASA/TM-2001-210842 , L-18067 , NAS 1.15:210842 , ARL-TR-2432
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 18
    facet.materialart.
    Unknown
    First observations of high-temperature submarine hydrothermal vents and massive anhydrite deposits off the north coast of Iceland (2001)
    Elsevier
    In:  Marine Geology, 177 (3-4). pp. 199-220.
    Details
    Publication Date: 2018-01-02
    Description: High-temperature (250°C) hydrothermal vents and massive anhydrite deposits have been found in a shallow water, sediment-filled graben near 66°36′N in the Tjornes Fracture Zone north of Iceland. The site is located about 30 km offshore, near the small island of Grimsey. The main vent field occurs at a depth of 400 m and consists of about 20 large-diameter (up to 10 m) mounds and 1–3 m chimneys and spires of anhydrite and talc. A north–south alignment of the mounds over a 1-km strike length of the valley floor suggests that their distribution is controlled by a buried fault. Widespread shimmering water and extensive white patches of anhydrite in the sediment between the mounds indicates that the entire 1-km2 area occupied by the vents is thermally active. A 2-man research submersible JAGO was used to map the area and to sample vent waters, gases, and chimneys. Actively boiling hydrothermal vents occur on most of the mounds, and extensive two-phase venting indicates that the field is underlain by a large boiling zone (200×300 m). The presence of boiling fluids in shallow aquifers beneath the deposits was confirmed by sediment coring. The highest-temperature pore fluids were encountered in talc- and anhydrite-rich sedimentary layers that occur up to 7 m below the mounds. Baked muds underlie the talc and anhydrite layers, and pyrite is common in stockwork-like fractures and veins in the hydrothermally altered sediments. However, massive sulfides (pyrite–marcasite crusts) were found in only one relict mound. Subseafloor boiling has likely affected the metal-carrying capacity of the hydrothermal fluids, and deposition of sulfides may be occurring at greater depth. Although the mounds and chimneys at Grimsey resemble other deposits at sedimented ridges (e.g. Middle Valley, Escanaba Trough, Guaymas Basin), the shallow water setting and extensive boiling of the hydrothermal fluids represent a distinctive new type of seafloor hydrothermal system.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 19
    facet.materialart.
    Unknown
    First results of the OROMA experiment in the Lister Tief of the German Bight in the North Sea, EARSeL Proceedings (2004)
    In:  EARSeL eProceedings, 3 . pp. 86-104.
    Details
    Publication Date: 2012-07-06
    Description: The objective of the project entitled “Operational Radar and Optical Mapping in monitoring hydrodynamic, morphodynamic and environmental parameters for coastal management (OROMA)” within the Fifth Framework Programme of the European Commission (EC) is to improve the effectiveness of monitoring technologies in coastal waters. The Research Vessel (R.V.) Ludwig Prandtl of the GKSS research centre was equipped with special sensors and instruments to measure the position of the ship, the water depth, the salinity, the water temperature, the current speed and direction, the modulation characteristics of short-wave energies, and relevant air-sea interaction parameters due to the presence of submarine sand waves. The first experiment of the OROMA project on 5-16 August 2002 took place in the Lister Tief, a tidal inlet of the German Bight in the North Sea. The seabed morphology of the Lister Tief reveals a complex configuration of different bedforms which is four-dimensional in space and time. A significant upward orientated component uvert of the three-dimensional current velocity field was observed. Marked vertically so-called waterspouts of uvert above the crests of sand waves have been measured by the Acoustic Doppler Current Profiler (ADCP) as straight lines. They cause water upwelling with turbulence patterns at the water surface affecting the Normalized Radar Cross Section (NRCS) modulation. A first impression of expected NRCS modulation signatures of sea bottom topography detected by the GKSS shipborne X-band radar are presented as an uncalibrated composite of five single sea clutter images acquired in the Lister Tief on 22 November 1990.
    Type: Article , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 20
    facet.materialart.
    Unknown
    Flächenbezogene Bilanzierung der benthischen Remineralisierung von organischem Kohlenstoff in Teilregionen des Atlantiks unter Anwendung eines Geoinformationssystems (2000)
    Details
    Publication Date: 2023-02-09
    Description: Der marine Kohlenstoffkreislauf wurde mit neuen Ansätzen zur flächenbezogenen Modellierung für drei unterschiedliche Regionen, den nordöstlichen Nordatlantik, den Nordwestatlantik und den äquatorialen Ostatlantik, unter Anwendung eines Geoinformationssystems (GIS) bilanziert. In regionalen Detailstudien zum Transport organischen Kohlenstoffes aus der photischen Zone zum Meeresboden anhand empirischer Analysen und repräsentativer Datensätze zur Primärproduktion an der Meeresoberfläche anhand von Satellitenfernerkundung und zur direkten Bestimmung benthischer Sauerstoffzehrung, die den Abbau organischer Substanz in entsprechender Wassertiefe am Meeresboden widerspiegelt, konnten die Variabilität und die Abhängigkeiten ortsspezifischer Prozesse erfasst, eingegrenzt und bilanziert werden. Kleinregionale und tiefenbezogene Massenbilanzen wurden für jedes Gebiet aufgestellt, um die Kopplung benthisch-pelagischer Prozesse des marinen Kohlenstoffkreislaufes zu untersuchen. Demnach werden biogeographische Zonierungen der Meeresoberfläche in kleinräumiger Auflösung auch aus benthischer Sicht wiedergegeben und können zur Bilanzierung des Abbaus organischer Substanz in der Tiefsee und der langfristigen Einbettung in das Sediment herangezogen werden. Im Gegensatz zu globalen Beziehungen und Bilanzen ergaben sich regional signifikante Unterschiede im Export zum Meeresboden und der benthischen Remineralisierung. Typische tiefenabhängige und kleinregionale Verteilungsmuster konnten so mit Hilfe empirischer Relationen und eines GIS sichtbar gemacht und bilanziert werden.
    Type: Thesis , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 21
    facet.materialart.
    Unknown
    FS/RV SONNE Fahrtbericht SO165 = Cruise report SO165 OTEGA I : LOTUS - OMEGA - MUMM ; Balboa - San Diego - Portland - San Francisco, June 29 - August 20, 2002 ; [financed by the Federal Ministry of Education and Research in Bonn (BMBF) grant no. 03G0165A] (2003)
    GEOMAR
    In:  GEOMAR-Report, 112 . GEOMAR, Kiel, 159 pp.
    Details
    Publication Date: 2017-06-28
    Type: Report , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 22
    facet.materialart.
    Unknown
    Germania in Pacifico : Humboldt, Chamisso and other early german contributions to Pacific research, 1741 - 1876 (2002)
    University of Washington Press
    In:  In: Oceanographic history : the Pacific and beyond; [proceedings of the Fifth International Congress on the History of Oceanography, Scripes Institution of Oceanography, La Jolla, California, July 1993]. University of Washington Press, Seattle, USA, pp. 107-117.
    Details
    Publication Date: 2014-07-04
    Type: Book chapter , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 23
    facet.materialart.
    Unknown
    Global ozone data from the meteor-3/TOMS ultraviolet spectrometer (1994)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: A new TOMS instrument (Total Ozone Mapping Spectrometer) was launched from the Plesetsk Cosomodrome, Russia on August 15, 1991. The purpose of the joint project between the U.S. and Russia was to continue the long-term record of ozone measurements from Nimbus-7/TOMS (launched in October 1978). Ozone data from the two satellites compare very closely. When the orbital positions were nearly the same, the comparison over the entire globe showed an offset of 2 percent with a standard deviation of 5 percent. Comparisons were made with several ground based M124 and Dobson stations showing good agreement in absolute value and with the day-to-day variations seen by the ground stations.
    Keywords: GEOPHYSICS
    Type: Ozone in the Troposphere and Stratosphere, Part 2; p 877-882
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 24
    facet.materialart.
    Unknown
    Hydrothermalismus in der Tjörnes Bruchzone nördlich von Island (2003)
    Deutsche Gesellschaft für Meeresforschung
    In:  DGM-Mitteilungen, 2 . pp. 13-16.
    Details
    Publication Date: 2016-11-04
    Type: Article , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 25
    facet.materialart.
    Unknown
    Institut für Meereskunde an der Universität Kiel: Jahresbericht Jahr 1991 (1992)
    Institut für Meereskunde an der Universität Kiel
    In:  Institut für Meereskunde an der Universität Kiel, Kiel, Germany, 167 pp.
    Details
    Publication Date: 2022-01-25
    Type: Report , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 26
    facet.materialart.
    Unknown
    Institut für Meereskunde an der Universität Kiel: Report 1999-2001 (2002)
    Institut für Meereskunde an der Universität Kiel
    In:  Institut für Meereskunde an der Universität Kiel, Kiel, Germany, 178 pp.
    Details
    Publication Date: 2022-01-25
    Type: Report , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 27
    facet.materialart.
    Unknown
    Leichtflüchtige Halogenkohlenwasserstoffe in der marinen Atmosphäre: Bestand, Herkunft und Massenbilanzen über der Nord- und Ostsee (1994)
    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 191 pp . Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 253 . DOI 10.3289/ifm_ber_253 〈http://dx.doi.org/10.3289/ifm_ber_253〉.
    Details
    Publication Date: 2022-01-24
    Type: Thesis , NonPeerReviewed
    Format: text
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 28
    facet.materialart.
    Unknown
    Measurement of aerosol profiles using high-spectral-resolution Rayleigh-Mie lidar (1992)
    In:  Other Sources
    Details
    Publication Date: 2013-08-29
    Description: High-spectral-resolution Rayleigh-Mie lidar measurements of vertical profiles (1 to 5 km) of atmospheric pressure and density, as well as aerosol profiles, including backscatter ratio and extinction ratio are reported. These require simultaneous measurement of temperature. Use of the technique does not require any assumptions about the aerosol but does require that the pressure at one altitude is known and that the gas law of the air is known (e.g., an ideal gas).
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA. Langley Research Center, 16th International Laser Radar Conference, Part 2; p 505-508
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 29
    facet.materialart.
    Unknown
    Mehrskalige Kartierung des konvergenten Kontinentalrandes vor Costa Rica - erste Ergebnisse der Fahrt SO163 mit FS SONNE (2003)
    In:  [Talk] In: 63. Jahrestagung DGG, 23.- 28.02.2003, Jena, Germany .
    Details
    Publication Date: 2019-09-23
    Type: Conference or Workshop Item , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 30
    facet.materialart.
    Unknown
    Meteors: A Delivery Mechanism of Organic Matter to The Early Earth (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: All potential exogenous pre-biotic matter arrived to Earth by ways of our atmosphere, where much material was ablated during a luminous phase called 1. meteors" in rarefied flows of high (up to 270) Mach number. The recent Leonid showers offered a first glimpse into the elusive physical conditions of the ablation process and atmospheric chemistry associated with high-speed meteors. Molecular emissions were detected that trace a meteor's brilliant light to a 4,300 K warm wake rather than to the meteor's head. A new theoretical approach using the direct simulation by Monte Carlo technique identified the source-region and demonstrated that the ablation process is critical in the heating of the meteor's wake. In the head of the meteor, organic carbon appears to survive flash heating and rapid cooling. The temperatures in the wake of the meteor are just right for dissociation of CO and the formation of more complex organic compounds. The resulting materials could account for the bulk of pre-biotic organic carbon on the early Earth at the time of the origin of life.
    Keywords: Astrophysics
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 31
    facet.materialart.
    Unknown
    Modelluntersuchungen zur Rolle mesoskaliger Fluktuationen im Atlantischen Ozean (1992)
    Deutscher Wetterdienst
    In:  In: Deutsche Meteorologen-Tagung 1992 vom 16. bis 20. März 1992 in Berlin. Annalen der Meteorologie, 27 . Deutscher Wetterdienst, Offenbach am Main, Germany, pp. 216-217. ISBN 978-3-88148-271-4
    Details
    Publication Date: 2018-01-23
    Type: Book chapter , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 32
    facet.materialart.
    Unknown
    New Galileo and VLA/DSN observations of Jupiter's radiation belts near the vicinity of Amalthea (2003)
    In:  Other Sources
    Details
    Publication Date: 2018-06-08
    Keywords: Lunar and Planetary Science and Exploration
    Type: EGS-AGU Joint Assembly; Nice; France
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 33
    facet.materialart.
    Unknown
    Nimbus-7 Total Ozone Mapping Spectrometer (TOMS) data products user's guide (1993)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Two tape products from the Total Ozone Mapping Spectrometer (TOMS) aboard the Nimbus-7 have been archived at the National Space Science Data Center. The instrument measures backscattered Earth radiance and incoming solar irradiance; their ratio -- the albedo -- is used in ozone retrievals. In-flight measurements are used to monitor changes in the instrument sensitivity. The algorithm to retrieve total column ozone compares the observed ratios of albedos at pairs of wavelengths with pair ratios calculated for different ozone values, solar zenith angles, and optical paths. The initial error in the absolute scale for TOMS total ozone is 3 percent, the one standard-deviation random error is 2 percent, and the drift is +/- 1.5 percent over 14.5 years. The High Density TOMS (HDTOMS) tape contains the measured albedos, the derived total ozone amount, reflectivity, and cloud-height information for each scan position. It also contains an index of SO2 contamination for each position. The Gridded TOMS (GRIDTOMS) tape contains daily total ozone and reflectivity in roughly equal area grids (110 km in latitude by about 100-150 km in longitude). Detailed descriptions of the tape structure and record formats are provided.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-RP-1323 , REPT-94B00013 , NAS 1.61:1323
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 34
    facet.materialart.
    Unknown
    Offline GCSS Intercomparison of Cloud-Radiation Interaction and Surface Fluxes (2004)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: Simulations of deep tropical clouds by both cloud-resolving models (CRMs) and single-column models (SCMs) in the GEWEX Cloud System Study (GCSS) Working Group 4 (WG4; Precipitating Convective Cloud Systems), Case 2 (19-27 December 1992, TOGA-COARE IFA) have produced large differences in the mean heating and moistening rates (-1 to -5 K and -2 to 2 grams per kilogram respectively). Since the large-scale advective temperature and moisture "forcing" are prescribed for this case, a closer examination of two of the remaining external types of "forcing", namely radiative heating and air/sea hear and moisture transfer, are warranted. This paper examines the current radiation and surface flux of parameterizations used in the cloud models participating in the GCSS WG4, be executing the models "offline" for one time step (12 s) for a prescribed atmospheric state, then examining the surface and radiation fluxes from each model. The dynamic, thermodynamic, and microphysical fluids are provided by the GCE-derived model output for Case 2 during a period of very active deep convection (westerly wind burst). The surface and radiation fluxes produced from the models are then divided into prescribed convective, stratiform, and clear regions in order to examine the role that clouds play in the flux parameterizations. The results suggest that the differences between the models are attributed more to the surface flux parameterizations than the radiation schemes.
    Keywords: Meteorology and Climatology
    Type: 26th Conference on Hurricane and Tropical Meteorology; May 03, 2004 - May 07, 2004; Miami, FL; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 35
    facet.materialart.
    Unknown
    On the accuracy of the independent column approximation in calculating the downward fluxes in the UVA, UVB and PAR spectral ranges (2001)
    AGU (American Geophysical Union)
    In:  Journal of Geophysical Research: Atmospheres, 106 (D13). pp. 14301-14312.
    Details
    Publication Date: 2019-07-31
    Description: In order to investigate the accuracy of simplification in modeling the radiative transfer in those solar spectral regions with major impacts on bio-organisms, i.e., the UVA (0.32–0.4 μm), the UVB (0.28–0.32 μm), and the photosynthetically active radiation (PAR, 0.4–0.7 μm), radiative transfer calculations with varying treatments of cloud geometries (plane-parallel homogeneous (PPHOM), independent column approximation (ICA), and three-dimensional (3-D) inhomogeneous) have been performed. The complete sets of atmospheric information for 133 cloud realizations are taken from the three-dimensional nonhydrostatic mesoscale atmospheric model (GESIMA). A Monte Carlo radiative transfer model (GRIMALDI) has been developed that simulates scattering and absorption for arbitrarily three-dimensional distributions of cloud hydrometeors, air molecules, and water vapor. Results are shown for domain-averaged direct and total transmission (and so, implicitly, diffuse transmission) at the ground surface. In the UVA the PPHOM assumption leads to an underestimation in direct (total) downward flux by as much as 43 (28) W m−2, which is about 49% (32%) of the incoming irradiation, whereas results based on the ICA are almost identical to the 3-D case, except for convective clouds where the error in the UVA for direct (total) downward flux reaches 5 (2) W m−2, or 6% (2%) of the incoming solar irradiation.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 36
    facet.materialart.
    Unknown
    Preliminary report on SONNE-95 [SO95] cruise "MONITOR MONSOON" to the South China Sea / Vorläufiger Bericht über SONNE-Fahrt 95 "Monitor Monsoon" in die Südchina-See, Manila - Guangzhou - Hongkong - Kota Kinabalu - Hongkong, 16. April - 8 June 1994 (1994)
    In:  Berichte - Reports / Geologisch-Paläontologisches Institut und Museum, Christian-Albrechts-Universität Kiel, 68 . UNSPECIFIED, Kiel, Deutschland, 237 pp.
    Details
    Publication Date: 2020-08-03
    Type: Report , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 37
    facet.materialart.
    Unknown
    Prokaryotische Aktivität und Diversität an marinen Bio-Geo Schnittstellen in der Tiefsee unter besonderer Berücksichtigung der Prozesse der Methanoxidation (2004)
    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 198 pp
    Details
    Publication Date: 2022-01-18
    Description: The activity and diversity of prokaryotic communities in special deep-sea environments were investigated during several research projects. Water-bodies with different portions of hydrothermal fluids were examined in the central North Fiji Basin (South-West Pacific). Changes within the bacterial community structure could be observed with increasing distance from the vent sites and decreasing concentrations of reduced compounds. In the hydrothermal vent fields, sulfur-oxidizing bacteria take a major part in building up organic biomass. Aerobic methane-oxidizing bacteria were isolated from the surface of cold seep sediments in the Makran accretionary prism (off Pakistan). Among the derived isolates there are representatives of a, thus far, unknown genus belonging to the Methylococcaceae. Anoxic, hydrothermally-influenced sediments were investigated at the edge of a vulcanic structure in the Bransfield Strait (Antarctica). Groups of previously unknown archaea were detected in sediment horizons where anaerobic methane oxidation could be measured.
    Type: Thesis , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 38
    facet.materialart.
    Unknown
    Russian-German cooperation SYSTEM LAPTEV SEA : the expedition Lena-Anabar 2003 (2004)
    AWI, Alfred-Wegener-Institut für Polar- und Meeresforschung
    In:  In: Expeditions in Siberia in 2003. , ed. by Schirrmeister, L. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 489 . AWI, Alfred-Wegener-Institut für Polar- und Meeresforschung, Bremerhaven, pp. 1-210.
    Details
    Publication Date: 2020-10-26
    Type: Book chapter , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 39
    facet.materialart.
    Unknown
    Russian-German Cooperation SYSTEM LAPTEV SEA : The Expedition LENA-Anabar 2003 (2004)
    Kamloth
    In:  In: Expeditions in Siberia in 2003. , ed. by Schirrmeister, L. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 489 . Kamloth, Bremen, pp. 1-209, 215 pp.
    Details
    Publication Date: 2015-04-21
    Type: Book chapter , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 40
    facet.materialart.
    Unknown
    Russisch-Deutsche Zusammenarbeit System Laptev-See 2000 : Abschlussbericht (2002)
    In:  UNSPECIFIED, Kiel, 84 + Anhang pp.
    Details
    Publication Date: 2015-04-01
    Description: BMBF-Verbundvorhaben: 03G0534. Förderzeitraum 1.1.1998 bis 30.6.2001. Zusammenfassung der Ergebnisse Im Rahmen des Verbundvorhabens „Russisch-deutsche Zusammenarbeit: System Laptev-See 2000“ konnten sehr vielversprechende und z.T. einzigartige Ergebnisse erzielt werden. Die Voraussetzung dafür bildeten die wissenschaftlichen Arbeiten während der marinen und terrestrischen Expeditionen TRANSDRIFT und LENA. Durch den regen Austausch von Wissenschaftlern konnte die kooperative Auswertung sichergestellt werden. Ein Teil der wissenschaftlichen Auswertungen des Probenmaterials wurde bereits im 1999 eröffneten Otto-Schmidt-Labor für Polar- und Meeresforschung (Förderkennzeichen: 03PLO26A) in St. Petersburg durchgeführt. Die Ergebnisse wurden auf vielen internationalen Fachtagungen sowie während der bilateralen Arbeitstreffen und Statusseminare des Verbundvorhabens (1999 und 2000) in St. Petersburg vorgestellt und in internationalen Fachzeitschriften veröffentlicht. Die weitere Auswertung wissenschaftlich besonders relevanter Themenbereiche wird derzeit im Rahmen des Synthesevorhabens „System Laptev-See 2000 – Synthesephase“ (Förderkennzeichen: BEO 03G0569; Laufzeit 1.1.2001-31.8.2002) durchgeführt. Im Rahmen dieser Synthesephase wird auch die Abschlussbegutachtung des Verbundvorhabens stattfinden (8.-11. Mai 2002 in Kiel). Tabelle 1 zeigt die Struktur des Verbundvorhabens und seiner Teilprojekte. Im Anschluss daran folgt eine Übersicht der wichtigsten Ergebnisse der Teilprojekte des Verbundvorhabens. Teilprojekt 1: Bilanzierung von Treibhausgasen und Prozessstudien zum Methankreislauf in Permafrostgebieten Teilprojekt 2: Mikrobielle Lebensgemeinschaften und CO2-Fluss in Permafrostlandschaften Teilprojekt 3: Marine Umweltreaktionen und Stoffumsätze Teilprojekt 4: Atmosphärischer Eintrag von natürlichen Radioisotopen Teilprojekt 5: Sensibilität mariner arktischer Ökosysteme Teilprojekt 6: Umwelt- und Sedimentationsgeschichte des Lena-Deltas Teilprojekt 7: Partikeltransport im Delta-Schelf-System Teilprojekt 8: Terrestrische Klimasignale in eisreichen Permafrostabfolgen Teilprojekt 9: Ursachen und Auswirkungen von Umweltveränderungen in Permafrostgebieten Teilprojekt 10: Akustische Signale von submarinem Permafrost Teilprojekt TK: Terrestrische Koordination Teilprojekt MK: Marine Koordination
    Type: Report , NonPeerReviewed
    Format: text
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 41
    facet.materialart.
    Unknown
    Satellite Mapping of the Earth's Ozone and Sulfur Dioxide (2000)
    In:  Other Sources
    Details
    Publication Date: 2019-07-17
    Description: The Total Ozone Mapping Spectrometer (TOMS) instruments are spatially-scanning UV spectrometers that have produced daily global images of total ozone over the last 21 years since the launch of the Nimbus 7 satellite. The instruments use a total ozone retrieval algorithm pioneered by J.V. Dave and C. L. Mateer for the Nimbus 4 Backscatter Ultraviolet (BUV) instrument, designed by D.F. Heath. The TOMS ozone maps have revealed the relations between total ozone and atmospheric dynamics, and shown the dramatic losses of ozone in the Antarctic ozone hole and the Northern hemisphere. The accepted long-term trends in global, regional, and local ozone are derived from data from the Nimbus 7 TOMS and three successive TOMS flights on Russian, Japanese, and American satellites. The next TOMS flight will be launched in 2000. The contiguous mapping design and fortuitous choice of TOMS wavelengths bands also permitted imaging of a second atmospheric gas, sulfur dioxide, which is transient due to its short lifetime. The importance of this measurement was first realized after the eruption of El Chichon volcano in 1982. The extreme range of sizes of volcanic eruptions and the associated danger require observations from a distant observing platform. The first quantitative time series of the input of sulfur dioxide by explosive volcanic eruptions into the atmosphere thus was developed from the TOMS missions. Finally, the Rayleigh and aerosol scattering spectral characteristic and reflectivity complete the four dominant pieces of information in the near UV albedo of the Earth. The four parameters are derived with a linear algorithm, the absorption coefficients of the gases, and effective paths computed from radiative transfer tables. Absorbing aerosol clouds (smoke, dust, volcanic ash) are readily identified by their deviation from a Rayleigh signature. The greatest shortcoming of the TOMS dataset is the 24 hour time resolution that is produced by the polar orbit of the satellite. Dynamic phenomena, such as upper air fronts that modulate total ozone and volcanic eruptions of sulfur dioxide and ash, cannot be adequately resolved. It is hoped that UV observations from geostationary satellites will soon be made to test the value of this unique information in weather forecasting and aviation safety.
    Keywords: Environment Pollution
    Type: Radiation; Jul 24, 2000 - Jul 29, 2000; Saint Petersburg; Russia
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 42
    facet.materialart.
    Unknown
    Satellite Mapping of the Earth's Ozone and Sulfur Dioxide (2000)
    In:  Other Sources
    Details
    Publication Date: 2019-07-17
    Description: The Total Ozone Mapping Spectrometer (TOMS) instruments are spatially-scanning UV spectrometers that have produced daily global images of total ozone over the last 21 years since the launch of the Nimbus 7 satellite. The instruments use a total ozone retrieval algorithm pioneered by J.V. Dave and C. L. Mateer for the Nimbus 4 Backscatter Ultraviolet (BUV) instrument, designed by D.F. Heath. The TOMS ozone maps have revealed the relations between total ozone and atmospheric dynamics, and shown the dramatic losses of ozone in the Antarctic ozone hole and the Northern hemisphere. The accepted long-term trends in global, regional, and local ozone are derived from data from the Nimbus 7 TOMS and three successive TOMS flights on Russian, Japanese, and American satellites. The next TOMS flight will be launched in 2000. The contiguous mapping design and fortuitous choice of TOMS wavelengths bands also permitted imaging of a second atmospheric gas, sulfur dioxide, which is transient due to its short lifetime. The importance of this measurement was first realized after the eruption of El Chichon volcano in 1982. The extreme range of sizes of volcanic eruptions and the 'associated danger require observations from a distant observing platform. The first quantitative time series of the input of sulfur dioxide by explosive volcanic eruptions into the atmosphere thus was developed from the TOMS missions. Finally, the Rayleigh and aerosol scattering spectral characteristic and reflectivity complete the four dominant pieces of information in the near UV albedo of the Earth. The four parameters are derived with a linear algorithm, the absorption coefficients of the gases, and effective paths computed from radiative transfer tables. Absorbing aerosol clouds (smoke, dust, volcanic ash) are readily identified by their deviation from a Rayleigh signature. The greatest shortcoming of the TOMS dataset is the 24 hour time resolution that is produced by the polar orbit of the satellite. Dynamic phenomena, such as upper air fronts that modulate total ozone and volcanic eruptions of sulfur dioxide and ash, cannot be adequately resolved. It is hoped that UV observations from geostationary satellites will soon be made to test the value of this unique information in weather forecasting and aviation safety.
    Keywords: Environment Pollution
    Type: International Radiation Symposium 2000; Jul 24, 2000 - Jul 29, 2000; Saint Petersburg; Russia
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 43
    facet.materialart.
    Unknown
    Shore face profiles in the area of Mamontov Klyk: echo sounding, seawater and sea bottom deposits sampling (2004)
    Alfred-Wegener-Institut
    In:  In: Expeditions in Siberia in 2003. , ed. by Schirrmeister, L. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 489 . Alfred-Wegener-Institut, Bremerhaven, pp. 148-153.
    Details
    Publication Date: 2015-02-03
    Type: Book chapter , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 44
    facet.materialart.
    Unknown
    SO178-KOMEX Cruise Report, July 22 – September 15, 2004, Pusan - Vladivostok – Okhotsk Sea - Vladivostok - Pusan - Jakarta : Mass exchange processes and balances in the Okhotsk Sea (2004)
    Details
    Publication Date: 2022-08-31
    Type: Report , NonPeerReviewed
    Format: text
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 45
    facet.materialart.
    Unknown
    Spurenelementanreicherung in arktischen und borealen Meeresvögeln (2003)
    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 243 pp
    Details
    Publication Date: 2022-01-18
    Description: Age-related, geographical and interspecific differences in metal accumulations were investigated in three seabird species. Samples were collected in Runde and Hornoya/ Norway, Brittany, German Bight. In beached or starving Common Guillemots negative correlations were found only between Zn, Cu and Se levels and the nutritional state. Thus Guillemots can be used as bioindicators for local contamination with Hg and Cd. In Kittiwake nestlings from the Island of Helgoland, egg contamination and the elimination of Hg via the loss of downy feathers was more important for Hg accumulation with age than contaminated food items. The influence of moult and tissue growth on Hg accumulation was most evident in these birds. Cadmium accumulation depend on the ingestion of contaminated food during chick development. The elevated Hg and Cd contents in Kittiwakes from arctic regions compared to Guillemots could be attributed to the variable feeding habits of this species. It was possible to separate Kittiwake populations of Hornoya and Runde and Guillemots of Brittany and the German Bight according to their metal contaminations.
    Type: Thesis , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 46
    facet.materialart.
    Unknown
    Spurenelementanreicherung in arktischen und borealen Meeresvögeln (2004)
    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 259 pp
    Details
    Publication Date: 2022-01-18
    Description: Age-related, geographical and interspecific differences in metal accumulations were investigated in three seabird species. Samples were collected in Runde and Hornoya/ Norway, Brittany, German Bight. In beached or starving Common Guillemots negative correlations were found only between Zn, Cu and Se levels and the nutritional state. Thus Guillemots can be used as bioindicators for local contamination with Hg and Cd. In Kittiwake nestlings from the Island of Helgoland, egg contamination and the elimination of Hg via the loss of downy feathers was more important for Hg accumulation with age than contaminated food items. The influence of moult and tissue growth on Hg accumulation was most evident in these birds. Cadmium accumulation depend on the ingestion of contaminated food during chick development. The elevated Hg and Cd contents in Kittiwakes from arctic regions compared to Guillemots could be attributed to the variable feeding habits of this species. It was possible to separate Kittiwake populations of Hornoya and Runde and Guillemots of Brittany and the German Bight according to their metal contaminations.
    Type: Thesis , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 47
    facet.materialart.
    Unknown
    Summer floods in Central Europe - ­ Climate change track? (2004)
    In:  Natural Hazards
    Details
    Publication Date: 2022-03-21
    Type: info:eu-repo/semantics/article
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    CITATION PIK
  • 48
    facet.materialart.
    Unknown
    The 2003 European summer heatwaves and drought - synoptic diagnosis and impacts (2004)
    Wiley-Blackwell
    In:  Weather, 59 (8). pp. 209-216.
    Details
    Publication Date: 2020-04-28
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 49
    facet.materialart.
    Unknown
    The Behaviour of Immature and Female Hawksbill Turtles (Eretmochelys imbricata) at Sea (2004)
    Details
    Publication Date: 2023-01-24
    Description: Das Verhalten sowohl adulter Weibchen als auch juveniler Karettschildkröten (Eretmochelys imbricata) auf See wurde aufgezeichnet und die Tauchgänge in Abhängigkeit von unterschiedlichen extrensischen und intrensischen Bedingungen analysiert. In den zwei Karibischen Untersuchungsgebieten wurden an den freilebenden Karettschildkröten Geräte befestigt, die Wassertemperatur, Lichtintensität, Schwimmgeschwindigkeit, Tiefe, Himmelsrichtung und Lage im Raum in Messintervallen zwischen 0.25 und 30 sek aufzeichneten. Während der Reproduktionsphase führten adulte Weibchen Ruhetauchgänge durch, die unabhängig vom Tagesrhythmus waren. Lediglich kurz vor der Eiablage zeigte sich ein nachtaktiver Rhythmus. Während eines Hurrikans war das Verhalten des betroffenen Weibchens kurzfristig verändert und die Wassertemperatur mittelfristig erniedrigt. Immature Karettschildkröten zeigten einen deutlich tagaktiven Rhythmus mit kürzeren, aktiven Tauchgängen am Tag und langen Ruhetauchgängen in der Nacht. Nach Beendigung der Nistsaison suchten die untersuchten Weibchen Nahrungsgründe in verschiedenen Himmelsrichtungen und Entfernungen zwischen 70 und 360 km auf. Im grundsätzlichen Tauchverhalten adulter Weibchen ausserhalb der Reproduktionsphase wurde Tagaktivität nachgewiesen. Die erhobenen Daten zeigen eine Abhängigkeit der Tauchdauer von der saisonal schwankenden Wassertemperatur und von der Körpermasse des Tieres.
    Type: Thesis , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 50
    facet.materialart.
    Unknown
    The central European floods of August 2002: Part 2 - Synoptic causes and considerations with respect to climatic change (2003)
    Wiley-Blackwell
    In:  Weather, 58 (11). pp. 434-442.
    Details
    Publication Date: 2020-04-28
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 51
    facet.materialart.
    Unknown
    The early major warming in December 2001 – exceptional? (2002)
    AGU (American Geophysical Union)
    In:  Geophysical Research Letters, 29 (21).
    Details
    Publication Date: 2018-02-20
    Description: The early major warming in December 2001 is described and compared to the two other December major warmings in 1998 and 1987, showing a strong tropospheric-stratospheric coupling in all three cases. We argue that the occurrence of free westward propagating Rossby waves interacting with a forced quasi-stationary wave number 1 led to these three early events. The possible excitation of these waves is discussed with respect to the tropospheric circulation, which showed strong blockings over the northern Atlantic prior to the early major warmings.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 52
    facet.materialart.
    Unknown
    The Remarkable 2003-2004 Winter and Other Recent Warm Winters in the Arctic Stratosphere Since the Late 1990s (2004)
    In:  CASI
    Details
    Publication Date: 2018-06-06
    Description: The 2003-2004 Arctic winter was remarkable in the 40-year record of meteorological analyses. A major warming beginning in early January 2004 led to nearly two months of vortex disruption with high-latitude easterlies in the middle to lower stratosphere. The upper stratospheric vortex broke up in late December, but began to recover by early January, and in February and March was the strongest since regular observations began in 1979. The lower stratospheric vortex broke up in late January. Comparison with two previous years, 1984-1985 and 1986-1987, with prolonged mid-winter warming periods shows unique characteristics of the 2003-2004 warming period: The length of the vortex disruption, the strong and rapid recovery in the upper stratosphere, and the slow progression of the warming from upper to lower stratosphere. January 2004 zonal mean winds in the middle and lower stratosphere were over two standard deviations below average. Examination of past variability shows that the recent frequency of major stratospheric warmings (seven in the past six years) is unprecedented. Lower stratospheric temperatures were unusually high during six of the past seven years, with five having much lower than usual potential for PSC formation and ozone loss (nearly none in 1998-1999, 2001-2002 and 2003-2004, and very little in 1997-1998 and 2000-2001). Middle and upper stratospheric temperatures, however, were unusually low during and after February. The pattern of five of the last seven years with very low PSC potential would be expected to occur randomly once every approximately 850 years. This cluster of warm winters, immediately following a period of unusually cold winters, may have important implications for possible changes in interannual variability and for determination and attribution of trends in stratospheric temperatures and ozone.
    Keywords: Meteorology and Climatology
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 53
    facet.materialart.
    Unknown
    The sun and heliosphere at solar maximum (2003)
    In:  Other Sources
    Details
    Publication Date: 2018-06-08
    Description: Recent Ulysses observations from the Sun's equator to the poles reveal fundamental properties of the three-dimensional heliosphere at the maximum in solar activity. The heliospheric magnetic field originates from a magnetic dipole oriented nearly perpendicular to, instead of nearly parallel to, the Sun'rotation axis. Magnetic fields, solar wind, and energetic charged particles from low-latitude sources reach all latitudes, including the polar caps. The very fast high-latitude wind and polar coronal holes disappear and reappear together. Solar wind speed continues to be inversely correlated with coronal temperature. The cosmic ray flux is reduced symmetrically at all latitudes.
    Keywords: Solar Physics
    Type: Science; Volume 302; 1165-1169
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 54
    facet.materialart.
    Unknown
    Transfer von festen, flüssigen und gasförmigen Stoffen aus Vulkanen in die Atmosphäre (1993)
    Springer
    In:  Umweltwissenschaften und Schadstoff-Forschung, 5 (1). pp. 27-44.
    Details
    Publication Date: 2018-03-02
    Description: Die häufigsten vulkanischen Volatilen sind H2O, CO2, SO3 und Halogene. Zusammensetzung, Menge und Injektionsraten von vulkanischen Gasen und Partikeln in die Troposphäre und Stratosphäre hängen ab von der chemischen Zusammensetzung eines Magmas, dem plattentektonischen Milieu sowie Eruptionsmechanismen und Eruptionsraten. Über 90% der eruptierten Magmen sind basaltischer Zusammensetzung mit niedriger Viskosität, relativ geringen Volatilengehalten und meist niedrigen Eruptionsraten sowie wenig explosiven Eruptionen überwiegend entlang der mittelozeanischen Rücken in großen Wassertiefen. Magmen in Inselbögen und Subduktionszonen an Kontinenträndern sind H2O-reich, in anderen plattentektonischen Milieus überwiegt in basaltischen Magmen CO2. In mafischen Magmen ist CO2 schlecht löslich und kann daher schon mehrere Kilometer unter der Erdoberfläche als Gasphase aus einem Magma entweichen. Felsische (hochdifferenzierte) Magmen, H2O-reich und CO2-arm, eruptieren oft hochexplosiv, insbesondere an Subduktionszonen, und mit hohen Eruptionsraten, z.B. El Chichón (Mexiko, 1982) und Pinatubo (Philippinen, 1991). Ihre Eruptionssäulen (Gas-/Partikelgemische) können bis ca. 40 km Höhe erreichen und sind Hauptlieferant der in die Stratosphäre injizierten Gasmengen.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 55
    facet.materialart.
    Unknown
    Verbreitung und Aktivität der methanotrophen Mikroflora in arktischen Böden des Lena- Deltas, Sibirien (2003)
    In:  (Diploma thesis), Universität Potsdam, Potsdam, 106 pp DOI hdl:10013/epic.25598.
    Details
    Publication Date: 2015-04-09
    Description: Die vorliegende Arbeit untersucht die Verbreitung und Aktivität der Methanoxidierenden (methanotrophen) Mikroflora in arktischen Böden des Lena-Deltas,Sibirien. Dazu wurden die Anpassungspotentiale der Methan oxidierenden Mikroflora anunterschiedliche Standortfaktoren ebenso untersucht, wie ihre Aktivitätspotentiale beiunterschiedlichen Temperaturen und Methankonzentrationen. Mit Hilfe einer Methode derGanzzellhybridisierung, der sogenannten Fluoreszenz-in-situ-Hybridisierung, konnten ausden gewonnenen Ergebnissen Unterschiede in der Populationszusammensetzung imTiefenprofil von Permafroststandorten aufgezeigt und erklärt werden.Die Anpassungspotentiale von Methan oxidierenden Bakterien wurden durch denVergleich eines Permafrost-Auengleys mit einem Tundra-Moorgley der Insel Samoylov imLena-Delta untersucht. Der Permafrost-Auengley stellte aufgrund seinerbodenphysikalischen und bodenchemischen Eigenschaften ein günstigeres Habitat für dieMethan oxidierenden Bakterien dar als der Tundra-Moorgley. Die maximalen Zellzahlenim Permafrost-Auengley waren mehr als dreimal so hoch wie die maximalen Zellzahlen imTundra-Moorgley. Die Methanoxidationsaktivität unter in-situ-Bedingungen betrug imPermafrsot-Auengley etwa das Zehnfache der Methanoxidationsaktivität des Tundra-Moorgleys. Ausschlaggebend für die Unterschiede in den Zellzahlen und den Aktivitätenwar das Bodensubstrat, die damit verbundene Porengrößenverteilung sowie die Qualitätdes DOC.· Der hohe Schluffanteil im Permafrost-Auengley und der damit verbundeneebenfalls hohe Anteil an Mittelporen korrelieren positiv mit den ZellzahlenMethan oxidierender Bakterien.· Das engere und damit günstigere C/N-Verhältnis des Permafrost-Auengleysscheint die Qualität des DOC und damit die Lebensbedingungen der Methanoxidierenden Bakterien positiv zu beeinflussen.· Die Zellzahlen Methan oxidierender Bakterien korrelieren in beiden Standortenpositiv mit dem Methangehalt und damit ebenso mit der Methanbildung imBoden. Die Sauerstoffkonzentration spielt in Bezug auf die Zellzahlen und dieAktivität Methan oxidierender Bakterien eine untergeordnete Rolle.ZUSAMMENFASSUNG IVAufgrund der Aktivitätspotentiale bei unterschiedlichen Temperaturen undMethangehalten konnte eine sehr gute Anpassung der Methan oxidierenden Mikroflora andie Temperatur- und Methankonzentrationsgradienten in arktischen Böden beobachtetwerden:· In den oberen Bodenhorizonten des Permafrost-Auengleys existieren Methanoxidierende Bakterien mit einer hohen Substrataffinität. Ihre maximale Aktivitäterreichen diese Organismen bei Temperaturen 〉 20 °C und einerMethankonzentration zwischen 5000 ppm und 10000 ppm. Bei 10 °C zeigen dieseOrganismen jedoch immerhin noch die Hälfte und bei 4 °C bzw. 0 °C noch einDrittel ihrer maximalen Aktivität.· In den tieferen Bodenhorizonten, dem Übergangsbereich zum Permafrost sowiedem Permafrostbereich selbst, die durch mehr als 10 °C niedrigere in-situTemperaturen und weitaus höhere Methankonzentrationen gekennzeichnet sindals die Oberbodenhorizonte, leben einerseits psychrophile Methan oxidierendeBakterien. Diese erreichen ihre maximale Aktivität bei 4 °C. Zum anderendominieren in diesen Horizonten Methan oxidierende Organismen mit einerniedrigen Substrataffinität. Ihre Km-Werte sind mehr als sechsmal so hoch wie imAi-Horizont (0- 5 cm Bodentiefe).Die Anpassungs- und Aktivitätspotentiale spiegeln sich in der Verbreitung von Typ I undTyp II Methan oxidierenden Bakterien wider und sind offensichtlich auf diephysiologischen Unterschiede beider Gruppen Methan oxidierender Bakterienzurückzuführen. Mit Hilfe der Fluoreszenz-in-situ-Hybridisierung wurde folgendeVerbreitung von Typ I und Typ II Methan oxidierenden Bakterien im Tiefenprofilbeobachtet:· In den oberen Bodenhorizonten existieren temperaturangepasste Typ I Methanoxidierende Bakterien, die entweder der Gruppe der psychrotoleranten Bakterienoder einer Mischflora aus psychrophilen und mesophilen Methan oxidierendenBakterien angehören und durch eine hohe Substrataffinität charakterisiert sind.· In den tieferen Horizonten leben zum einen psychrophile Typ I Methanoxidierende Bakterien, zum anderen Typ II Methan oxidierende Bakterien miteiner geringen Substrataffinität.
    Type: Thesis , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 56
    facet.materialart.
    Unknown
    Zur Gründung des Instituts für Meereskunde der Universität Kiel 1933 bis 1945 (2000)
    Deutsches Meeresmuseum
    In:  Historisch-Meereskundliches Jahrbuch, 7 . pp. 7-48.
    Details
    Publication Date: 2018-04-09
    Description: Up to 1937 there was no marine science institute at Kiel, but marine research was done within the university institutes of zoology, botany, geology and geography, and since 1870 was supported by the Prussian Commission for Scientific Investigations of the German Seas, since 1900 also by the German Scientific Commission for Marine Research. In 1933, the first year of the national socialistic regime, the Philosophical Faculty developed plans for an Institute of Marine Research of Kiel University. In 1934 Kiel University sent a memorandum regarding the institute to the Minister of Education in Berlin. In 1936 Adolf Remane was appointed Director of the Zoological Institute of Kiel University and at the same time got order to found a marine science institute with departments of biology, hydrography/chemistry and hydrogeology at Kitzeberg on the eastern banks of Kiel Fjord. In 1937 the Institute of Marine Research was inaugurated and Remane was appointed provisional director. In 1944 the chemist Hermann Wattenberg became director, but he was killed on 24 July 1944 when the institute building was destroyed by bombs. After the war the institute was re-installed in Kiel
    Type: Article , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...