Pore water chemistry and sediment temperature for cores COAST_C-2 and BK-2, central Laptev Sea shelf
Submarine permafrost is more vulnerable to thawing than permafrost on land. Besides increased heat transfer from the ocean water, the penetration of salt lowers the freezing temperature and accelerates permafrost degradation. This data set provides sediment temperatures and pore water chemistry from...
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Format: | Dataset |
Language: | English |
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PANGAEA
2017
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.873837 https://doi.org/10.1594/PANGAEA.873837 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.873837 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI |
spellingShingle |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI Mitzscherling, Julia Winkel, Matthias Winterfeld, Maria Horn, Fabian Yang, Sizhong Grigoriev, Mikhail N Wagner, Dirk Overduin, Pier Paul Liebner, Susanne Pore water chemistry and sediment temperature for cores COAST_C-2 and BK-2, central Laptev Sea shelf |
topic_facet |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI |
description |
Submarine permafrost is more vulnerable to thawing than permafrost on land. Besides increased heat transfer from the ocean water, the penetration of salt lowers the freezing temperature and accelerates permafrost degradation. This data set provides sediment temperatures and pore water chemistry from two submarine permafrost cores from the Laptev Sea on the East Siberian Arctic Shelf which inundated about 540 and 2500 years ago. These data are published in partnership with a paper by Magritz et al., that traces how bacterial communities develop depending on duration of the marine influence and pore water chemistry. Magritz et al. (2017) show that submarine permafrost is a source of microbial life deep below the seafloor where it forms an unusual, non-steady state habitat. Pore water chemistry revealed different pore water units that reflected stages of permafrost thaw. Millennia after inundation by sea water, bacteria stratify into communities in permafrost, marine-affected permafrost, and seabed sediments. In contrast to pore water chemistry, the development of bacterial community structure, diversity and abundance in submarine permafrost appear site-specific, suggesting that both sedimentation and permafrost thaw histories strongly affect bacteria. Finally, highest total cell counts, DNA concentrations and bacterial gene copy numbers were observed in the ice-bonded unaffected permafrost unit of the longer inundated core, suggesting that permafrost bacterial communities exposed to submarine conditions proliferate millennia after warming. |
format |
Dataset |
author |
Mitzscherling, Julia Winkel, Matthias Winterfeld, Maria Horn, Fabian Yang, Sizhong Grigoriev, Mikhail N Wagner, Dirk Overduin, Pier Paul Liebner, Susanne |
author_facet |
Mitzscherling, Julia Winkel, Matthias Winterfeld, Maria Horn, Fabian Yang, Sizhong Grigoriev, Mikhail N Wagner, Dirk Overduin, Pier Paul Liebner, Susanne |
author_sort |
Mitzscherling, Julia |
title |
Pore water chemistry and sediment temperature for cores COAST_C-2 and BK-2, central Laptev Sea shelf |
title_short |
Pore water chemistry and sediment temperature for cores COAST_C-2 and BK-2, central Laptev Sea shelf |
title_full |
Pore water chemistry and sediment temperature for cores COAST_C-2 and BK-2, central Laptev Sea shelf |
title_fullStr |
Pore water chemistry and sediment temperature for cores COAST_C-2 and BK-2, central Laptev Sea shelf |
title_full_unstemmed |
Pore water chemistry and sediment temperature for cores COAST_C-2 and BK-2, central Laptev Sea shelf |
title_sort |
pore water chemistry and sediment temperature for cores coast_c-2 and bk-2, central laptev sea shelf |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.873837 https://doi.org/10.1594/PANGAEA.873837 |
op_coverage |
MEDIAN LATITUDE: 72.566164 * MEDIAN LONGITUDE: 124.625886 * SOUTH-BOUND LATITUDE: 71.422300 * WEST-BOUND LONGITUDE: 117.166972 * NORTH-BOUND LATITUDE: 73.710028 * EAST-BOUND LONGITUDE: 132.084800 * DATE/TIME START: 2005-04-14T00:00:00 * DATE/TIME END: 2012-04-23T00:00:00 |
long_lat |
ENVELOPE(117.166972,132.084800,73.710028,71.422300) |
geographic |
Arctic Laptev Sea |
geographic_facet |
Arctic Laptev Sea |
genre |
Arctic Ice laptev Laptev Sea permafrost |
genre_facet |
Arctic Ice laptev Laptev Sea permafrost |
op_source |
Supplement to: Mitzscherling, Julia; Winkel, Matthias; Winterfeld, Maria; Horn, Fabian; Yang, Sizhong; Grigoriev, Mikhail N; Wagner, Dirk; Overduin, Pier Paul; Liebner, Susanne (2017): The development of permafrost bacterial communities under submarine conditions. Journal of Geophysical Research: Biogeosciences, 122(7), 1689-1704, https://doi.org/10.1002/2017JG003859 |
op_relation |
Overduin, Pier Paul; Liebner, Susanne; Knoblauch, Christian; Günther, Frank; Wetterich, Sebastian; Schirrmeister, Lutz; Hubberten, Hans-Wolfgang; Grigoriev, Mikhail N (2015): Borehole temperature, submarine permafrost methane concentrations and pore water chemistry measured on borehole BK-2, central Laptev Sea shelf. PANGAEA, https://doi.org/10.1594/PANGAEA.846279 Overduin, Pier Paul; Liebner, Susanne; Knoblauch, Christian; Günther, Frank; Wetterich, Sebastian; Schirrmeister, Lutz; Hubberten, Hans-Wolfgang; Grigoriev, Mikhail N (2015): Submarine permafrost methane concentrations and pore water chemistry: measurements from borehole BK-2, central Laptev Sea shelf. PANGAEA, https://doi.org/10.1594/PANGAEA.846274 Winterfeld, Maria; Schirrmeister, Lutz; Grigoriev, Mikhail N; Kunitsky, Victor V; Andreev, Andrei A; Murray, Andrew Sean; Overduin, Pier Paul (2011): (Table 1) Radiocarbon and OSL ages of sediment cores C1-C5 drilled during the COAST expedition to Cape Mamontov Klyk in April 2005. PANGAEA, https://doi.org/10.1594/PANGAEA.841929 https://doi.pangaea.de/10.1594/PANGAEA.873837 https://doi.org/10.1594/PANGAEA.873837 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.873837 https://doi.org/10.1002/2017JG003859 https://doi.org/10.1594/PANGAEA.846279 https://doi.org/10.1594/PANGAEA.846274 https://doi.org/10.1594/PANGAEA.841929 |
_version_ |
1766343118888632320 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.873837 2023-05-15T15:12:27+02:00 Pore water chemistry and sediment temperature for cores COAST_C-2 and BK-2, central Laptev Sea shelf Mitzscherling, Julia Winkel, Matthias Winterfeld, Maria Horn, Fabian Yang, Sizhong Grigoriev, Mikhail N Wagner, Dirk Overduin, Pier Paul Liebner, Susanne MEDIAN LATITUDE: 72.566164 * MEDIAN LONGITUDE: 124.625886 * SOUTH-BOUND LATITUDE: 71.422300 * WEST-BOUND LONGITUDE: 117.166972 * NORTH-BOUND LATITUDE: 73.710028 * EAST-BOUND LONGITUDE: 132.084800 * DATE/TIME START: 2005-04-14T00:00:00 * DATE/TIME END: 2012-04-23T00:00:00 2017-03-22 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.873837 https://doi.org/10.1594/PANGAEA.873837 en eng PANGAEA Overduin, Pier Paul; Liebner, Susanne; Knoblauch, Christian; Günther, Frank; Wetterich, Sebastian; Schirrmeister, Lutz; Hubberten, Hans-Wolfgang; Grigoriev, Mikhail N (2015): Borehole temperature, submarine permafrost methane concentrations and pore water chemistry measured on borehole BK-2, central Laptev Sea shelf. PANGAEA, https://doi.org/10.1594/PANGAEA.846279 Overduin, Pier Paul; Liebner, Susanne; Knoblauch, Christian; Günther, Frank; Wetterich, Sebastian; Schirrmeister, Lutz; Hubberten, Hans-Wolfgang; Grigoriev, Mikhail N (2015): Submarine permafrost methane concentrations and pore water chemistry: measurements from borehole BK-2, central Laptev Sea shelf. PANGAEA, https://doi.org/10.1594/PANGAEA.846274 Winterfeld, Maria; Schirrmeister, Lutz; Grigoriev, Mikhail N; Kunitsky, Victor V; Andreev, Andrei A; Murray, Andrew Sean; Overduin, Pier Paul (2011): (Table 1) Radiocarbon and OSL ages of sediment cores C1-C5 drilled during the COAST expedition to Cape Mamontov Klyk in April 2005. PANGAEA, https://doi.org/10.1594/PANGAEA.841929 https://doi.pangaea.de/10.1594/PANGAEA.873837 https://doi.org/10.1594/PANGAEA.873837 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Mitzscherling, Julia; Winkel, Matthias; Winterfeld, Maria; Horn, Fabian; Yang, Sizhong; Grigoriev, Mikhail N; Wagner, Dirk; Overduin, Pier Paul; Liebner, Susanne (2017): The development of permafrost bacterial communities under submarine conditions. Journal of Geophysical Research: Biogeosciences, 122(7), 1689-1704, https://doi.org/10.1002/2017JG003859 AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI Dataset 2017 ftpangaea https://doi.org/10.1594/PANGAEA.873837 https://doi.org/10.1002/2017JG003859 https://doi.org/10.1594/PANGAEA.846279 https://doi.org/10.1594/PANGAEA.846274 https://doi.org/10.1594/PANGAEA.841929 2023-01-20T07:33:55Z Submarine permafrost is more vulnerable to thawing than permafrost on land. Besides increased heat transfer from the ocean water, the penetration of salt lowers the freezing temperature and accelerates permafrost degradation. This data set provides sediment temperatures and pore water chemistry from two submarine permafrost cores from the Laptev Sea on the East Siberian Arctic Shelf which inundated about 540 and 2500 years ago. These data are published in partnership with a paper by Magritz et al., that traces how bacterial communities develop depending on duration of the marine influence and pore water chemistry. Magritz et al. (2017) show that submarine permafrost is a source of microbial life deep below the seafloor where it forms an unusual, non-steady state habitat. Pore water chemistry revealed different pore water units that reflected stages of permafrost thaw. Millennia after inundation by sea water, bacteria stratify into communities in permafrost, marine-affected permafrost, and seabed sediments. In contrast to pore water chemistry, the development of bacterial community structure, diversity and abundance in submarine permafrost appear site-specific, suggesting that both sedimentation and permafrost thaw histories strongly affect bacteria. Finally, highest total cell counts, DNA concentrations and bacterial gene copy numbers were observed in the ice-bonded unaffected permafrost unit of the longer inundated core, suggesting that permafrost bacterial communities exposed to submarine conditions proliferate millennia after warming. Dataset Arctic Ice laptev Laptev Sea permafrost PANGAEA - Data Publisher for Earth & Environmental Science Arctic Laptev Sea ENVELOPE(117.166972,132.084800,73.710028,71.422300) |