Late Weichselian and Holocene palaeoceanography of Storfjordrenna, southern Svalbard
Multiproxy analyses (including benthic and planktonic foraminifera, δ<sup>18</sup>O and δ<sup>13</sup>C records, grain-size distribution, ice-rafted debris, XRF geochemistry and magnetic susceptibility) were performed on a <sup>14</sup>C-dated marine sed...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2015-03-01
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| Series: | Climate of the Past |
| Online Access: | http://www.clim-past.net/11/587/2015/cp-11-587-2015.pdf |
| _version_ | 1818943012704616448 |
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| author | M. Łącka M. Zajączkowski M. Forwick W. Szczuciński |
| author_facet | M. Łącka M. Zajączkowski M. Forwick W. Szczuciński |
| author_sort | M. Łącka |
| collection | DOAJ |
| description | Multiproxy analyses (including benthic and planktonic foraminifera, δ<sup>18</sup>O and δ<sup>13</sup>C records, grain-size distribution, ice-rafted
debris, XRF geochemistry and magnetic susceptibility) were performed on a
<sup>14</sup>C-dated marine sediment core from Storfjordrenna, located off of
southern Svalbard. The sediments in the core cover the termination of
Bølling–Allerød, the Younger Dryas and the Holocene and reflect
general changes in the oceanography/climate of the European Arctic after the
last glaciation. Grounded ice of the last Svalbard–Barents Sea Ice Sheet
retreated from the coring site ca. 13 950 cal yr BP. During the
transition from the subglacial to glaciomarine setting, Arctic Waters
dominated the hydrography in Storfjordrenna. However, the waters were not
uniformly cold and experienced several warmer spells. A progressive warming
and marked change in the nature of the hydrology occurred during the early
Holocene. Relatively warm and saline Atlantic Water began to dominate the
hydrography starting from approximately 9600 cal yr BP. Although the
climate in eastern Svalbard was milder at that time than at present (smaller
glaciers), two periods of slight cooling were observed in 9000–8000 and
6000–5500 cal yr BP. A change in the Storfjordrenna oceanography occurred
at the beginning of the late Holocene (i.e. 3600 cal yr BP) synchronously
with glacier growth on land and enhanced bottom current velocities. Although
cooling was observed in the Surface Water, Atlantic Water remained present in
the deeper portion of the water column of Storfjordrenna. |
| first_indexed | 2024-12-20T07:20:34Z |
| format | Article |
| id | doaj.art-8d186e5ce8544ed29ae4217426e28a49 |
| institution | Directory Open Access Journal |
| issn | 1814-9324 1814-9332 |
| language | English |
| last_indexed | 2024-12-20T07:20:34Z |
| publishDate | 2015-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Climate of the Past |
| spelling | doaj.art-8d186e5ce8544ed29ae4217426e28a492022-12-21T19:48:42ZengCopernicus PublicationsClimate of the Past1814-93241814-93322015-03-0111358760310.5194/cp-11-587-2015Late Weichselian and Holocene palaeoceanography of Storfjordrenna, southern SvalbardM. Łącka0M. Zajączkowski1M. Forwick2W. Szczuciński3Institute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55, 81-712 Sopot, PolandInstitute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55, 81-712 Sopot, PolandDepartment of Geology, University of Tromsø – The Arctic University of Norway, 9037 Tromsø, NorwayInstitute of Geology, Adam Mickiewicz University in Poznan, Maków Polnych 16, 61-606 Poznań, PolandMultiproxy analyses (including benthic and planktonic foraminifera, δ<sup>18</sup>O and δ<sup>13</sup>C records, grain-size distribution, ice-rafted debris, XRF geochemistry and magnetic susceptibility) were performed on a <sup>14</sup>C-dated marine sediment core from Storfjordrenna, located off of southern Svalbard. The sediments in the core cover the termination of Bølling–Allerød, the Younger Dryas and the Holocene and reflect general changes in the oceanography/climate of the European Arctic after the last glaciation. Grounded ice of the last Svalbard–Barents Sea Ice Sheet retreated from the coring site ca. 13 950 cal yr BP. During the transition from the subglacial to glaciomarine setting, Arctic Waters dominated the hydrography in Storfjordrenna. However, the waters were not uniformly cold and experienced several warmer spells. A progressive warming and marked change in the nature of the hydrology occurred during the early Holocene. Relatively warm and saline Atlantic Water began to dominate the hydrography starting from approximately 9600 cal yr BP. Although the climate in eastern Svalbard was milder at that time than at present (smaller glaciers), two periods of slight cooling were observed in 9000–8000 and 6000–5500 cal yr BP. A change in the Storfjordrenna oceanography occurred at the beginning of the late Holocene (i.e. 3600 cal yr BP) synchronously with glacier growth on land and enhanced bottom current velocities. Although cooling was observed in the Surface Water, Atlantic Water remained present in the deeper portion of the water column of Storfjordrenna.http://www.clim-past.net/11/587/2015/cp-11-587-2015.pdf |
| spellingShingle | M. Łącka M. Zajączkowski M. Forwick W. Szczuciński Late Weichselian and Holocene palaeoceanography of Storfjordrenna, southern Svalbard Climate of the Past |
| title | Late Weichselian and Holocene palaeoceanography of Storfjordrenna, southern Svalbard |
| title_full | Late Weichselian and Holocene palaeoceanography of Storfjordrenna, southern Svalbard |
| title_fullStr | Late Weichselian and Holocene palaeoceanography of Storfjordrenna, southern Svalbard |
| title_full_unstemmed | Late Weichselian and Holocene palaeoceanography of Storfjordrenna, southern Svalbard |
| title_short | Late Weichselian and Holocene palaeoceanography of Storfjordrenna, southern Svalbard |
| title_sort | late weichselian and holocene palaeoceanography of storfjordrenna southern svalbard |
| url | http://www.clim-past.net/11/587/2015/cp-11-587-2015.pdf |
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