Reconstruction of the postglacial environments in the southwestern Barents Sea based on foraminiferal assemblages

Chistyakova, N.; Иванова, Е. В.; Risebrobakken, Bjørg; Ovsepyan, E. A.; Ovsepyan, Ya. S.

doi:10.1134/s0001437010040132

Cited by 36 publications

(49 citation statements)

References 25 publications

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“…Therefore, previous articles using 100 or 125 mm sieve size may have underestimated its abundance slightly. However, and Chistyakova et al (2010), using 100 mm sieve size, counted E. pusilla up to 40 and 57%, respectively, in the upper part of their Barents Sea cores, similar to our numbers. Whenever possible, 300 specimens were counted, but in low-abundance samples smaller counts were accepted.…”

Section: Methodssupporting

confidence: 76%

“…The ice-sheet margin then retreated rapidly by iceberg calving within the deeper troughs, which served as outlets for fast-flowing ice streams (Vorren & Laberg 1996;Landvik et al 1998). The deglaciation was coeval with rising sea level (Clark et al 2009) and was greatly influenced by the influx of Atlantic water masses (e.g., Chistyakova et al 2010;Junttila et al 2010). It was, however, punctuated by periods of ice margin stability and readvances, as evidenced by a series of ice-marginal deposits (Andreassen et al 2008;Ottesen et al 2008;Winsborrow et al 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The glacigenic sediments in this region have been investigated mainly with the aid of two-and three-dimensional seismic data, sub-bottom profiling and/or multibeam bathymetry (Vorren & Kristoffersen 1986;Vorren et al 1990;Andreassen et al 2008;Bellec et al 2008;Ottesen et al 2008;Winsborrow et al 2010;Rebesco et al 2011;Rü ther et al 2011;Bjarnadó ttir et al 2012). The studies based on the analysis of sediment cores (Hald et al 1989;Ivanova et al 2002;Aagaard-Sørensen et al 2010;Chistyakova et al 2010;Junttila et al 2010) have focused on sites of high sedimentation rate such as the Ingøydjupet (Ingøy Deep) trough (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sedimentary environments in the south-western Barents Sea during the last deglaciation and the Holocene: a case study outside the Ingøydjupet trough

Pau

Hammer

2016

Polar Research

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Section: Methodssupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sedimentary environments in the south-western Barents Sea during the last deglaciation and the Holocene: a case study outside the Ingøydjupet trough

Pau

Hammer

2016

Polar Research

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“…The unstable bottom water conditions as observed by the benthic foraminiferal fauna are also observed in several other benthic foraminiferal records in the Barents Sea and Svalbard region (Ślubowska et al, 2005;Ślubowska-Woldengen et al, 2007;Chistyakova et al, 2010;Risebrobakken et al, 2010;Rasmussen et al, 2012;Jernas et al, 2013), although timing of the onset differs between the regions (Fig. 6).…”

Section: Late Holocene (1500 Yr Bp-present)mentioning

confidence: 82%

“…An increased inflow of Atlantic water in the early Holocene is also evident from several records from the Svalbard and Barents Sea region (e.g., Duplessy et al, 2005;Ślubowska-Woldengen et al, 2007;Chistyakova et al, 2010;Rasmussen et al, 2012;Klitgaard-Kristensen et al, 2013) Sea , transfer-function-generated bottom water temperatures , and benthic foraminiferal assemblages (Ślubowska et al, 2005;Skirbekk et al, 2010) at the western and northern Svalbard shelf. Timing of the onset of increased inflow of Atlantic water agrees well between the SW Barents Sea, Kveithola, and the western Svalbard margin with an onset around 11 500 yr BP (Fig.…”

Section: Early Holocene (11 500-9800 Yr Bp)mentioning

confidence: 99%

Reconstruction of Atlantic water variability during the Holocene in the western Barents Sea

2014

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Abstract. The gravity core JM09-KA11-GC from 345 m water depth on the western Barents Sea margin was investigated for down-core distribution patterns of benthic Foraminifera, stable isotopes, and sedimentological parameters in order to reconstruct the flow of Atlantic water during the Holocene. The core site is located below the Atlantic water masses flowing into the Arctic Ocean and close to the Arctic front. The results show continuous presence of Atlantic water at the margin throughout the Holocene. During the early Holocene, (11 500-9800 cal yr BP), bottom water temperatures as calculated by transfer functions rose by 1.5 • C, likely due to the increased inflow of Atlantic water, although sea ice was still present at this time. The transition to the mid-Holocene is characterized by a local shift in current regime, resulting in a ceased supply of fine-grained material to the core location. Throughout the mid-Holocene the δ 18 O values indicate a slight cooling, thereby following changes in insolation. In the last 1500 yr, inflow of Atlantic water increased but was interrupted by periods of increased influence of Arctic water causing periodically colder and more unstable conditions.

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Identification of Atlantic water inflow on the north Svalbard shelf during the Holocene

Peral

Austin

Noormets³

2021

J Quaternary Science

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Nordaustlandet is located in the northeastern part of the Svalbard archipelago, within the northernmost reach of the West Spitsbergen Current. This current transports Atlantic water to the Arctic Ocean along the western and northern Svalbard margins. This region is well-suited for reconstructing the history of changing Atlantic water inflow to the Arctic Ocean. We studied the marine sediment core HH12-04-GC from Rijpfjorden. Benthic foraminiferal assemblages and sedimentological data are combined to reconstruct the palaeoenvironment of the fjord from the end of the last local deglaciation to the late Holocene. The local deglaciation, between 11.3 and 10.6 cal ka BP, was dominated by active glacier calving processes, associated with a strong inflow of Atlantic water. This led to the establishment of glaciomarine conditions. The Holocene was initially characterised by a relatively stable and warm environment associated with a strong contribution of Atlantic water. Glaciomarine influence progressively decreases after 9.7 cal ka BP and the Atlantic water contribution increases. The late Holocene displayed a similar environment to today, with the influence of glaciomarine conditions and limited Atlantic water inflow. These results confirm that Atlantic water inflows made a continuous contribution to northern Nordaustlandet throughout the postglacial period.

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Reconstruction of the postglacial environments in the southwestern Barents Sea based on foraminiferal assemblages

Cited by 36 publications

References 25 publications

Sedimentary environments in the south-western Barents Sea during the last deglaciation and the Holocene: a case study outside the Ingøydjupet trough

Sedimentary environments in the south-western Barents Sea during the last deglaciation and the Holocene: a case study outside the Ingøydjupet trough

Reconstruction of Atlantic water variability during the Holocene in the western Barents Sea

Identification of Atlantic water inflow on the north Svalbard shelf during the Holocene

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