Browsing by Author "Fahl, Kirsten"

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 ...

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)

Arctic (palaeo) river discharge and environmental change: evidence from the Holocene Kara Sea sedimentary record.

Stein, Ruediger; Dittmers, Klaus Hauke; Fahl, Kirsten; Kraus, Matthias; Matthiessen, Jens; Niessen, Frank; Pirrung, Michael; Polyakova, Ye I; Schoster, Frank; Steinke, Tatjana; Fütterer, Dieter K (PANGAEA, 2004-09-30)

In this paper, we summarize data on terrigenous sediment supply in the Kara Sea and its accumulation and spatial and temporal variability during Holocene times. Sedimentological, organic-geochemical, and micropaleontological ...

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 ...

Biomarker records, organic carbon accumulation, and river discharge in the Holocene southern Kara Sea (Arctic Ocean).

Fahl, Kirsten; Stein, Ruediger (PANGAEA, 2007-11-07)

Within the Russian-German research project on "Siberian River Run-off (SIRRO)" devoted to the freshwater discharge and its influence on biological, geochemical, and geological processes in the Kara Sea, sedimentological ...

Biomarkers as organic-carbon-source and environmental indicators in the Late Quaternary Arctic Ocean: Problems and Perspectives.

Fahl, Kirsten; Stein, Ruediger (PANGAEA, 1999-10-20)

Biomarkers in surface sediments from the Ob and Yenisei estuaries and the southern Kara Sea: Evidence for particulate organic carbon sources, pathways, and degradation.

Fahl, Kirsten; Stein, Ruediger; Gaye-Haake, Birgit; Gebhardt, Catalina; Kodina, Ludmilla A; Unger, Daniela; Ittekkot, Venugopalan (PANGAEA, 2003-06-15)

Evidence for Holocene centennial variability in sea ice cover based on IP25 biomarker reconstruction in the southern Kara Sea (Arctic Ocean).

Hörner, Tanja; Stein, Ruediger; Fahl, Kirsten (PANGAEA, 2017-02-02)

The Holocene is characterized by the late Holocene cooling trend as well as by internal short-term centennial fluctuations. As Arctic sea ice acts as a significant component (amplifier) within the climate system, investigating ...

High-resolution IP25-based reconstruction of sea-ice variability in the western North Pacific and Bering Sea during the past 18,000 years.

Méheust, Marie; Stein, Ruediger; Fahl, Kirsten; Max, Lars; Riethdorf, Jan-Rainer (PANGAEA, 2015-12-01)

Holocene accumulation of organic carbon at the Laptev Sea continental margin (Arctic Ocean): sources, pathways, and sinks.

Stein, Ruediger; Fahl, Kirsten (PANGAEA, 2000-02-29)

Holocene siliciclastic and organic carbon fluxes in the Ob and Yenisei estuaries and the adjacent inner Kara Sea: Quantification, variability, and paleoenvironmental implications.

Stein, Ruediger; Fahl, Kirsten; Dittmers, Klaus Hauke; Niessen, Frank; Stepanets, Oleg V (PANGAEA, 2002-04-12)

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) ...

Modern organic carbon deposition in the Laptev Sea and the adjacent continental slope: surface water productivity vs. terrigenous input.

Fahl, Kirsten; Stein, Ruediger (PANGAEA, 1997-09-25)

Sediment samples from the Laptev Sea, taken during the 1993 RV Polarstern expedition ARK IX/4 and the RV Ivan Kireyev expedition TRANSDRIFT I, were investigated for the amount and composition of their organic carbon ...

Modern seasonal variability and deglacial/Holocene change of central Arctic Ocean sea-ice cover: New insights from biomarker proxy records.

Fahl, Kirsten; Stein, Ruediger (PANGAEA, 2012-02-13)

For the reconstruction of sea-ice variability, a biomarker approach which is based on (1) the determination of sea-ice diatom-specific highly-branched isoprenoid (IP25) and (2) the coupling of phytoplankton biomarkers and ...

Paleo-sea ice distribution and polynya variability on the Kara sea shelf during the last 12 ka.

Hörner, Tanja; Stein, Ruediger; Fahl, Kirsten (PANGAEA, 2018-03-19)

The Kara Sea is an important area for paleo-climatic research since sea ice and brine formation take place on its shelf-two processes inducing supra-regional climatic implications and thereby connecting regional environmental ...

Particle fluxes from short-term sediment trap deployments in late summer in the southern Kara Sea.

Gaye-Haake, Birgit; Unger, Daniela; Nöthig, Eva-Maria; Okolodkov, Yuri; Fahl, Kirsten; Ittekkot, Venugopalan (PANGAEA, 2003-09-30)

In September 1999 two short-term moorings with cylindrical sediment traps were deployed to collect sinking particles in bottom waters off the Ob and Yenisei river mouths. Samples were studied for their bulk composition, ...

Post-glacial variability of sea ice cover, river run-off and biological production in the western Laptev Sea (Arctic Ocean) – A high-resolution biomarker study.

Hörner, Tanja; Stein, Ruediger; Fahl, Kirsten; Birgel, Daniel (PANGAEA, 2016-10-20)

Quantity and quality of organic carbon in surface sediments of the Ob and Yenisei estuaries and adjacent coastal areas: marine productivity vs.

Boucsein, Bettina; Fahl, Kirsten; Siebold, Martina; Stein, Ruediger (PANGAEA, 1999-10-02)

Two main mechanisms are controlling the accumulation of organic matter in the sediments of the Kara Sea. The large rivers Ob and Yenisei supply significant quantities of freshwater onto the shelf (Lisitsyn and Vinogradov, ...

Scientific Cruise Report of the Arctic Expedition ARK-XIII/2 of RV Polarstern in 1997 (Wissenschaftlicher Fahrtbericht über die Arktis-Expedition ARK-XIII/2 von 1997 mit FS Polarstern).

Stein, Ruediger; Fahl, Kirsten; Grobe, Hannes (PANGAEA, 2003-08-28)

Sea ice variability in the subarctic North Pacific and adjacent Bering Sea during the past 25 ka: New insights from IP25 and Uk'37 proxy records.

Méheust, Marie; Stein, Ruediger; Fahl, Kirsten; Gersonde, Rainer (PANGAEA, 2018-04-03)

Browsing by Author "Fahl, Kirsten"

Browsing by Author "Fahl, Kirsten"

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