FN Archimer Export Format PT J TI Deglacial export of pre-aged terrigenous carbon to the Bay of Biscay BT AF Queiroz Alves, Eduardo Wong, Wanyee Hefter, Jens Grotheer, Hendrik Tesi, Tommaso Gentz, Torben Zonneveld, Karin Mollenhauer, Gesine AS 1:1;2:1,2;3:1;4:1;5:3;6:1;7:4;8:1,2,4; FF 1:;2:;3:;4:;5:;6:;7:;8:; C1 Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany University of Bremen, Bremen, Germany Institute of Polar Sciences - National Research Council, 40129 Bologna, Italy MARUM-Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany C2 INST A WEGENER, GERMANY UNIV BREMEN, GERMANY CNR, ITALY UNIV BREMEN, GERMANY IN DOAJ IF 4.3 TC 0 UR https://archimer.ifremer.fr/doc/00825/93684/100478.pdf https://archimer.ifremer.fr/doc/00825/93684/107879.pdf https://archimer.ifremer.fr/doc/00825/93684/107880.pdf https://archimer.ifremer.fr/doc/00825/93684/107881.pdf LA English DT Article CR IMAGES 1-MD101 BO Marion Dufresne AB The last deglaciation is the most recent relatively well-documented period of pronounced and fast climate warming and, as such, it holds important information for our understanding of the climate system. Notably, while research into terrestrial organic carbon reservoirs has been instrumental in exploring the possible sources of atmospheric carbon dioxide during periods of rapid change, the underlying mechanisms are not fully understood. Here we investigate the mobilization of organic matter to the Bay of Biscay at the mouth of the Channel River, where an enhanced terrigenous input has been reported for the last glacial-interglacial transition. A suite of biomarker and isotopic analyses on a high-resolution sedimentary archive provided the first direct evidence for the fluvial supply of immature and ancient terrestrial organic matter to the core location. In the light of what has been reported for other regions with present or past permafrost conditions on land, this result points to the possibility of permafrost carbon export to the ocean, caused by processes that likely furthered the observed changes in atmospheric carbon dioxide. PY 2024 PD JAN SO Climate Of The Past SN 1814-9324 PU Copernicus GmbH VL 20 IS 1 UT 001168885500001 BP 121 EP 136 DI 10.5194/cp-20-121-2024 ID 93684 ER EF