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  • 2005-2009  (157)
  • 2000-2004  (108)
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Year
  • 1
    Article
    Article
    Russian-German cooperation Yakutsk - Potsdam : the expedition Central Yakutia 2005 (2007)
    Associated volumes
    Details Availability
    In: Expeditions in Siberia in 2005, Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung, 2007, (2007), 3
    In: year:2007
    In: number:3
    Type of Medium: Article
    Language: Undetermined
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  • 2
    Electronic Resource
    Electronic Resource
    Environmental history of the south-eastern South Atlantic since the Middle Miocene: evidence from the sedimentological records of ODP Sites 1088 and 1092 (2003)
    Oxford, UK : Blackwell Science Ltd
    Sedimentology 50 (2003), S. 0 
    Details
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: During Leg 177 of the Ocean Drilling Program (ODP), well-preserved Middle Miocene to Pleistocene carbonate-rich sediment records were recovered on a north–south transect through the south-eastern Atlantic sector of the Southern Ocean at Site 1088 on the Agulhas Ridge and Site 1092 on Meteor Rise. Both sites were dominated by the deposition of calcareous nannofossil oozes through the Miocene, indicating low biological productivity in warm to temperate surface waters. A continuous increase in the proportions of foraminifera since the latest Miocene (6·5 Ma) points to enhanced nutrient supply, possibly related to the global ‘biogenic bloom’ event across the Miocene–Pliocene boundary. Since the Late Pliocene, different styles of biological productivity developed between the sites. Enhanced deposition of biosiliceous constituents at the southern Site 1092, particularly in the Early Pleistocene, is consistent with the formation of the Circum-Antarctic Opal Belt since 2·5 Ma in a setting near the Polar Front, whereas carbonate deposition still prevailed at the northern Site 1088 situated near the Subtropical Front. Clay-mineral tracers of water-mass advection together with the pattern of sedimentation rates and hiatuses reflect distinct pulses in the development of regional ocean circulation between 14 and 12 Ma, around 8 Ma and since 2·8 Ma. These pulses can be related to Antarctic ice-sheet extension that mediates the production and flow of southern source water, and stepwise increases in North Atlantic Deep Water production that drives global conveyor circulation. At Site 1088, illite chemistry and silt/clay ratios of the terrigenous sediment fraction reflect the history of terrestrial climate in southern Africa, with humid conditions prior to the Early Late Miocene (9·7 Ma), followed by a dry episode until 7·7 Ma. The latest Miocene and Early Pliocene were characterized by a humid episode until modern aridity was established in the Late Pliocene between 4·0 and 2·8 Ma. These climate changes were related to the latitudinal migration of climate belts in response to tectonically caused reorganizations in atmospheric and ocean circulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3091.2003.00562.x
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Palaeoclimate Message from the fish teeth (2004)
    [s.l.] : Nature Publishing Group
    Nature 430 (2004), S. 26-27 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] How did Earth's oceans behave during past episodes of long-term ‘green-house’ warmth? On page 65 of this issue, Deborah J. Thomas describes her investigations into the most recent episode of extreme global warmth, which occurred during the early Cenozoic era, between roughly 65 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/430026a
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    Paper (German National Licenses)
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  • 4
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    Palaeoclimate signals as inferred from stable-isotope composition of ground ice in the Verkhoyansk foreland, Central Yakutia (2006)
    Zoological Institute of Russian Academy of Sciences
    In:  Permafrost and Periglacial Processes, 17 (2). pp. 119-132.
    Details
    Publication Date: 2015-03-31
    Description: Ice-rich permafrost deposits and their isotopic composition were studied at four sites in the western foreland of the Verkhoyansk Mountains, Central Yakutia. The isotopic composition of ice wedges formed in alluvial and loess-like sediments generally reflects the palaeoclimate of winter conditions. The middle Weichselian Ice Complex developed around 41 ka 14C BP during a period with colder winters than today. Similarly severe conditions are reflected in the late Weichselian Ice Complex from around 20 ka to 13 ka 14C BP. The transition to the Holocene is characterised by increases of 5‰ and 35‰ in δ18O and δD, respectively. This warming is documented in wedge ice, which grew between 8.5 and 4.5 ka BP. Towards the late Holocene and sub-recent times, a climatic deterioration is recorded, reflected by lighter isotopic composition of ice wedges, which developed between 1.2 ka and 0.7 ka 14C BP.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1002/ppp.556
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 5
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    Erste Ergebnisse zur spätquartären Umweltentwicklung im Werchojansk-Gebirge und seinem Vorland (2003)
    Selbstverl. der Alfred-Wegener-Stiftung
    In:  In: 21. Internationale Polartagung der Deutschen Gesellschaft für Polarforschung : Programm und Zusammenfassung der Tagungsbeiträge ; 17. - 22. März 2003, Kiel, Germany / Deutsche Gesellschaft für Polarforschung. Terra Nostra, 2003 (1). Selbstverl. der Alfred-Wegener-Stiftung, Bonn, pp. 41-42.
    Details
    Publication Date: 2015-03-26
    Type: Book chapter , NonPeerReviewed
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    OceanRep: Book chapter
  • 6
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    Documentation of sediment core PS69/899-2TC (2007)
    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Details
    Publication Date: 2023-03-16
    Keywords: ANT-XXIII/9; AWI_Paleo; Indian Ocean; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS69; PS69/899-2TC; TC; Trigger corer
    Type: Dataset
    Format: unknown
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  • 7
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    Some properties of the studied lakes in Central and North-east Yakutia, Appendix 2-2 (2007)
    PANGAEA
    Details
    Publication Date: 2023-03-07
    Keywords: 05-Yak-01; 05-Yak-02; 05-Yak-03; 05-Yak-04; 05-Yak-05; 05-Yak-06; 05-Yak-07; 05-Yak-08; 05-Yak-09; 05-Yak-10; 05-Yak-11; 05-Yak-12; 05-Yak-13; 05-Yak-14; 05-Yak-15; 05-Yak-16; 05-Yak-17; 05-Yak-18; 05-Yak-19; 05-Yak-20; 05-Yak-21; 05-Yak-22; 05-Yak-23; 05-Yak-24; 05-Yak-25; 05-Yak-26; 05-Yak-27; 05-Yak-28; 05-Yak-29; 05-Yak-30; 05-Yak-31; 05-Yak-32; 05-Yak-33; 05-Yak-34; 05-Yak-35; 05-Yak-36; 05-Yak-37; 05-Yak-38; 05-Yak-39; 05-Yak-40; 05-Yak-41; 05-Yak-42; 05-Yak-43; 05-Yak-44; 05-Yak-45; 05-Yak-46; 05-Yak-47; 05-Yak-48; 05-Yak-49; 05-Yak-50; 05-Yak-51; 05-Yak-52; 05-Yak-53; 05-Yak-54; 05-Yak-55; 05-Yak-56; Alyy; Argaa-Bere; Aryktaakh; AWI_PerDyn; AWI Arctic Land Expedition; B-4; B-5; B-6; Balybyrbym; Chai-Kyuel; Choktokhoi; Cloud cover; DEPTH, water; Depth of Secchi Disk; Elevation of event; Event label; Kapetovka; Kh; Khochyma; Kondoi; Kubalakh; Kytyyia; Kyunde; Latitude of event; Longitude of event; Magan-Sygykh; MalyiChabyda; Marfa; MULT; Multiple investigations; Neleger; Nukulku; Ochugui-Kengerime; Oi-Bes; Oibon; Oxygen; Permafrost Research (Periglacial Dynamics) @ AWI; RU-Land_2005_Verkhoyansk; Sordakh; Sordonno; Sordonnokh; Sturuktaakh; Temperature, water; Toiogoi; Ulakhan; Yakutia2005; Yukechi
    Type: Dataset
    Format: text/tab-separated-values, 203 data points
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    DATA PANGAEA
  • 8
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    General characteristics and geographical position of the studied lakes in Central and North-east Yakutia, Appendix 2-1 (2007)
    PANGAEA
    Details
    Publication Date: 2023-03-07
    Keywords: 05-Yak-01; 05-Yak-02; 05-Yak-03; 05-Yak-04; 05-Yak-05; 05-Yak-06; 05-Yak-07; 05-Yak-08; 05-Yak-09; 05-Yak-10; 05-Yak-11; 05-Yak-12; 05-Yak-13; 05-Yak-14; 05-Yak-15; 05-Yak-16; 05-Yak-17; 05-Yak-18; 05-Yak-19; 05-Yak-20; 05-Yak-21; 05-Yak-22; 05-Yak-23; 05-Yak-24; 05-Yak-25; 05-Yak-26; 05-Yak-27; 05-Yak-28; 05-Yak-29; 05-Yak-30; 05-Yak-31; 05-Yak-32; 05-Yak-33; 05-Yak-34; 05-Yak-35; 05-Yak-36; 05-Yak-37; 05-Yak-38; 05-Yak-39; 05-Yak-40; 05-Yak-41; 05-Yak-42; 05-Yak-43; 05-Yak-44; 05-Yak-45; 05-Yak-46; 05-Yak-47; 05-Yak-48; 05-Yak-49; 05-Yak-50; 05-Yak-51; 05-Yak-52; 05-Yak-53; 05-Yak-54; 05-Yak-55; 05-Yak-56; Alyy; Area/locality; Argaa-Bere; Aryktaakh; AWI_PerDyn; AWI Arctic Land Expedition; B-4; B-5; B-6; Balybyrbym; Chai-Kyuel; Choktokhoi; Elevation of event; Event label; Kapetovka; Kh; Khochyma; Kondoi; Kubalakh; Kytyyia; Kyunde; Lake, length; Lake, width; Lake type; Latitude of event; Longitude of event; Magan-Sygykh; MalyiChabyda; Marfa; Morphology; MULT; Multiple investigations; Neleger; Nukulku; Ochugui-Kengerime; Oi-Bes; Oibon; Permafrost Research (Periglacial Dynamics) @ AWI; RU-Land_2005_Verkhoyansk; Site; Sordakh; Sordonno; Sordonnokh; Sturuktaakh; Toiogoi; Ulakhan; Yakutia2005; Yukechi
    Type: Dataset
    Format: text/tab-separated-values, 332 data points
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    DATA PANGAEA
  • 9
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    Documentation of sediment core PS69/855-1TC (2008)
    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Details
    Publication Date: 2023-03-16
    Keywords: ANT-XXIII/9; AWI_Paleo; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; Prydz Bay; PS69; PS69/855-1TC; TC; Trigger corer
    Type: Dataset
    Format: unknown
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    DATA PANGAEA
  • 10
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    Sedimentology on surface samples from the Amundsen and Bellingshausen Seas (2003)
    PANGAEA
    In:  Supplement to: Hillenbrand, Claus-Dieter; Grobe, Hannes; Diekmann, Bernhard; Kuhn, Gerhard; Fütterer, Dieter K (2003): Distribution of clay minerals and proxies for productivity in surface sediments of the Bellingshausen and Amundsen seas (West Antarctica) - Relation to modern environmental conditions. Marine Geology, 193(3-4), 253-271, https://doi.org/10.1016/S0025-3227(02)00659-X
    Details
    Publication Date: 2023-06-27
    Description: Surface sediments from the Antarctic continental margin in the Bellingshausen and Amundsen seas (Pacific sector of the Southern Ocean) were investigated in order to decipher their capability to record modern environmental conditions. Spatial distribution of terrigenous sand and mud reflect regional differences in current-induced redeposition of glaciogenic debris. Clay mineral assemblages in the shelf sediments are controlled by the supply of terrigenous detritus from source rocks in the adjacent hinterland suggesting the occurrence of yet unknown sedimentary rocks in the hinterland of the Amundsen Sea. Clay mineral distribution on the continental rise in the Bellingshausen Sea points to the continuation of a bottom current from the Antarctic Peninsula rise to at least 94°W. Foraminifer-bearing and opal-poor deposits prevail on the continental margin in the western Bellingshausen Sea and the Amundsen Sea, whereas diatom-bearing and carbonate-free sediments characterize the eastern Bellingshausen Sea. Different modes of biological production, which were deduced from accumulation rates of biogenic barium during Marine Isotope Stage 1 and recent productivity measurements, obviously control the spatial pattern of opal- and carbonate-bearing sediments in the study area.
    Keywords: Adelaide Island; Amundsen Sea; Antarctic Peninsula; ANT-VI/2; ANT-XI/3; Anvers Island; Argentine Islands; AWI_Paleo; Barium; Barium, biogenic; Bellingshausen Sea; Calcium carbonate; Calculated; Carbon, organic, total; Chlorite; DEPTH, sediment/rock; Element analyser CHN, LECO; Elevation of event; Event label; Giant box corer; GKG; Grain size, sieving/settling tube; Illite; Kaolinite; Latitude of event; Longitude of event; Marguerite Bay; MUC; MultiCorer; Opal, auto analysis (Müller & Schneider, 1993); Opal, biogenic silica; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS12; PS12/185; PS12/186; PS12/193; PS12/194; PS12/195; PS12/196; PS12/199; PS12/200; PS1554-1; PS1555-1; PS1557-1; PS1558-1; PS1559-1; PS1560-1; PS1563-1; PS1564-1; PS2522-1; PS2524-1; PS2525-1; PS2526-1; PS2527-1; PS2528-1; PS2529-1; PS2531-1; PS2532-2; PS2533-1; PS2534-2; PS2537-1; PS2538-1; PS2539-2; PS2540-1; PS2541-2; PS2542-1; PS2543-3; PS2544-1; PS2545-1; PS2546-1; PS2547-2; PS2548-2; PS2550-2; PS2553-2; PS2556-1; PS29; PS29/010; PS29/012; PS29/016; PS29/018; PS29/021; PS29/022; PS29/024; PS29/033; PS29/039; PS29/040; PS29/042; PS29/045; PS29/046; PS29/047; PS29/048; PS29/049; PS29/050; PS29/051; PS29/054; PS29/057; PS29/062; PS29/063; PS29/064; PS29/066; PS29/070; PS29/075; Sand; Silt; Size fraction 〈 0.002 mm, clay; Smectite; X-ray diffraction TEXTUR, clay fraction; X-ray fluorescence (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 378 data points
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