Browsing by Subject "KAL"

A first southern Lomonosov Ridge (Arctic Ocean) 60 ka IP25 sea-ice record.

Stein, Ruediger; Fahl, Kirsten (PANGAEA, 2012-11-29)

Here, we present a first (low-resolution) biomarker sea-ice proxy record from the High Arctic (southern Lomonosov Ridge), going back in time to about 60 ka (MIS 3 to MIS 1). Variable concentrations of the sea-ice diatom ...

A Holocene pollen record from the Laptev Sea shelf, northern Yakutia.

Bauch, Henning A; Müller-Lupp, Thomas; Taldenkova, Ekaterina; Spielhagen, Robert F; Kassens, Heidemarie; Grootes, Pieter Meiert; Thiede, Jörn; Heinemeier, Jan; Petryashov, Victor (PANGAEA, 2001-10-29)

To establish a chronology of the Holocene transgression in Arctic Siberia, a total of 14 sediment cores from the Laptev Sea continental slope and shelf were studied covering the water depth range between 983 and 21 m. The ...

Accumulation of particulate organic carbon at the Eurasian continental margin during late Quaternary times: Controlling mechanisms and paleoenvironmental significance.

Stein, Ruediger; Boucsein, Bettina; Fahl, Kirsten; Garcia de Oteyza, T; Knies, Jochen; Niessen, Frank (PANGAEA, 2001-01-30)

An estimation of the sediment budget in the Laptev Sea during the last 5,000 years.

Rachold, Volker; Grigoriev, Mikhail N; Bauch, Henning A (PANGAEA, 2002-10-13)

This article presents a mass balance calculation of the sediment sources and sinks of the Laptev Sea. Sediment input into three regional sectors calculated on the basis of fluvial sediment discharge and coastal erosion ...

Benthic foraminiferal biodiversity response to a changing Arctic palaeoclimate in the last 24.000 years.

Wollenburg, Jutta E; Mackensen, Andreas; Kuhnt, Wolfgang (PANGAEA, 2007-10-11)

Four sediment cores recovered from 1000 to 2500 m water depth in the Arctic Ocean, tracing the inflowing Atlantic water from Fram Strait, Yermak Plateau, northern Barents Sea continental slope as far as the Laptev Sea, ...

Biogenic barium in surface sediments of the European Nordic Seas.

Pirrung, Michael (PANGAEA, 2008-03-14)

Barium in marine terrigenous surface sediments of the European Nordic Seas is analysed to evaluate its potential as palaeoproductivity proxy. Biogenic Ba is calculated from Ba and Al data using a conventional approach. For ...

Biomarker distributions in surface sediments from the Kara and Laptev seas (Arctic Ocean): indicators for organic-carbon sources and sea-ice coverage.

Xiao, Xiaotong; Fahl, Kirsten; Stein, Ruediger (PANGAEA, 2013-04-29)

Studies of spatial and temporal changes in modern and past sea-ice occurrence may help to understand the processes controlling the recent decrease in Arctic sea-ice cover. Here, we determined concentrations of IP25, a novel ...

Changes in the deposition of terrestrial organic matter on the Laptev Sea shelf during the Holocene: evidence from stable carbon isotopes.

Müller-Lupp, Thomas; Bauch, Henning A; Erlenkeuser, Helmut; Hefter, Jens; Kassens, Heidemarie; Thiede, Jörn (PANGAEA, 2000-01-29)

Stable carbon isotope ratios in the organic fraction of surface sediments from the Laptev Sea shelf were analyzed in order to study the modern distribution pattern of terrestrial organic matter. The delta13Corg signature ...

Clay-mineral distribution in surface sediments of the Eurasian Arctic Ocean and continental margin as indicator for source areas and transport pathways - a synthesis.

Wahsner, Monika; Müller, Claudia; Stein, Ruediger; Ivanov, Gennadiy I; Levitan, Mikhail A; Shelekhova, E S; Tarasov, Gennadiy A (PANGAEA, 1999-09-18)

Clay-mineral distributions in the Arctic Ocean and the adjacent Eurasian shelf areas are discussed to identify source areas and transport pathways of terrigenous material in the Arctic Ocean. The main clay minerals in ...

Climatic change in Central Asia during MIS 3/2: a case study using biological responses from Lake Baikal.

Swann, George E A; Mackay, Anson W; Leng, Melanie J; Demory, François (PANGAEA, 2005-12-22)

A Marine Isotope Stage (MIS) 3/early MIS 2 section from a structural high along the east coast of the North Basin of Lake Baikal was analysed for diatoms, C/N ratios, and organic carbon isotope ratios. Diatoms were present ...

Comparing dust flux records from the Subarctic North Pacific and Greenland: Implications for atmospheric transport to Greenland and for the application of dust as a chronostratigraphic tool.

Serno, Sascha; Winckler, Gisela; Anderson, Robert F; Maier, Edith; Ren, Haojia; Gersonde, Rainer; Haug, Gerald H (PANGAEA, 2015-05-06)

Depositional environment of the Laptev Sea (Arctic Siberia) during the Holocene.

Bauch, Henning A; Kassens, Heidemarie; Erlenkeuser, Helmut; Grootes, Pieter Meiert; Thiede, Jörn (PANGAEA, 1999-01-26)

The Holocene depositional setting of the Laptev Sea was studied using three marine sediment cores from water depths between 77 and 46 m. Based on sedimentary parameters (TOC content, delta13Corg, sedimentation rates) ...

Diatom distributions in northern North Pacific surface sediments and their relationship to modern environmental variables.

Ren, Jian; Gersonde, Rainer; Esper, Oliver; Sancetta, Constance A (PANGAEA, 2014-03-12)

In order to map the modern distribution of diatoms and to establish a reliable reference data set for paleoenvironmental reconstruction in the northern North Pacific, a new data set including the relative abundance of ...

Diatom-inferred salinity records from the Arctic Siberian Margin: Implications for fluvial runoff patterns during the Holocene.

Bauch, Henning A; Polyakova, Ye I (PANGAEA, 2003-01-21)

Diatom assemblages were employed to study temporal changes of Siberian river runoff on the Laptev Sea shelf. Using a correlation between freshwater diatoms (%) in core-top sediments and summer surface water salinities from ...

Distribution of magnetic susceptibility on the Eurasian shelf and continental slope - implications for source areas of magnetic minerals.

Niessen, Frank; Weiel, Dominik (PANGAEA, 2000-03-30)

Glacial-to-interglacial changes in nitrate supply and consumption in the subarctic North Pacific from microfossil-bound N isotopes at two trophic levels.

Ren, Haojia; Studer, Anja S; Serno, Sascha; Sigman, Daniel M; Winckler, Gisela; Anderson, Robert F; Oleynik, Sergey; Gersonde, Rainer; Haug, Gerald H (PANGAEA, 2015-11-06)

History of freshwater runoff across the Laptev Sea (Arctic) during the last degaciation.

Spielhagen, Robert F; Siegert, Christine; Erlenkeuser, Helmut (PANGAEA, 2005-05-19)

Sediment core PS2458 from the Laptev Sea continental margin (983-m water depth) stems from a position close to the paleoriver mouth of Lena and Yana rivers. It was dated by AMS-14C and analyzed in high resolution for oxygen ...

Late Quaternary dinoflagellate cyst stratigraphy at the Eurasian continental margin, Arctic Ocean: Indications for Atlantic water inflow in the past 150,000 years.

Matthiessen, Jens; Knies, Jochen; Nowaczyk, Norbert R; Stein, Ruediger (PANGAEA, 2001-09-28)

Four sediment cores located at the Eurasian continental margin underlying the Atlantic layer have been studied for their dinoflagellate cyst content. Concentrations of distinct dinoflagellate cyst taxa display fluctuations ...

Late quaternary organic carbon and biomarker records from the Laptev Sea continental margin (Arctic Ocean): implications for organic carbon flux and composition.

Stein, Ruediger; Fahl, Kirsten; Niessen, Frank; Siebold, Martina (PANGAEA, 1999-02-11)

In order to understand the processes controlling organic carbon deposition (i.e., primary productivity vs. terrigenous supply) and their paleoceanographic significance, three sediment cores (PS2471, PS2474. and PS2476) ...

Late Quaternary paleoclimatic reconstructions along the Eurasian continental margin (Spätquartäre paläoklimatische Rekonstruktionen entlang des Eurasischen Kontinentalhanges).

Kleiber, Hans Peter; Stein, Ruediger (PANGAEA, 2000-11-03)

Browsing by Subject "KAL"

Browsing by Subject "KAL"

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