IRD flux and supporting data on two cores in the western North Atlantic
A series of catastrophic iceberg discharges termed Heinrich events punctuated the last ice age in the North Atlantic. During Heinrich events, coarse terrigenous debris released from the drifting icebergs and preserved in deep-sea sediments serves as an indicator of their passage. Quantifying the ver...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.911512 2024-06-02T08:07:54+00:00 IRD flux and supporting data on two cores in the western North Atlantic Zhou, Yuxin McManus, Jerry F Jacobel, Allison W Costa, Kassandra M Wang, Shouyi Caraveo, Blanca Alvarez MEDIAN LATITUDE: 46.644723 * MEDIAN LONGITUDE: -45.926899 * SOUTH-BOUND LATITUDE: 43.680000 * WEST-BOUND LONGITUDE: -46.280000 * NORTH-BOUND LATITUDE: 50.159200 * EAST-BOUND LONGITUDE: -45.508300 * DATE/TIME START: 1993-07-13T00:00:00 * DATE/TIME END: 2017-07-08T11:24:00 2020 application/zip, 22 datasets https://doi.pangaea.de/10.1594/PANGAEA.911512 https://doi.org/10.1594/PANGAEA.911512 en eng PANGAEA Zhou, Yuxin; McManus, Jerry F; Jacobel, Allison W; Costa, Kassandra M; Wang, Shouyi; Caraveo, Blanca Alvarez (2021): Enhanced iceberg discharge in the western North Atlantic during all Heinrich events of the last glaciation. Earth and Planetary Science Letters, 564, 116910, https://doi.org/10.1016/j.epsl.2021.116910 https://doi.pangaea.de/10.1594/PANGAEA.911512 https://doi.org/10.1594/PANGAEA.911512 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess Heinrich event IRD flux Lamont-Doherty Earth Observatory Columbia University LDEO thorium normalization Western North Atlantic Dataset 2020 ftpangaea https://doi.org/10.1594/PANGAEA.91151210.1016/j.epsl.2021.116910 2024-05-07T23:45:53Z A series of catastrophic iceberg discharges termed Heinrich events punctuated the last ice age in the North Atlantic. During Heinrich events, coarse terrigenous debris released from the drifting icebergs and preserved in deep-sea sediments serves as an indicator of their passage. Quantifying the vertical flux of ice-rafted debris (IRD) in pelagic sediments can resolve questions regarding the timing and variation in ice sheet calving intensity. In this study, 230Thxs-based IRD flux was measured throughout the last glacial period in a deep-sea sediment core from the western North Atlantic (EW9303-37JPC, 43.68°N, 46.28°W, 3981 m), and complemented during Marine Isotope Stages (MIS) 1-3 by measurements from DY081-GVY01 (50.16°N, 45.51°W, 3721m) in the Labrador Sea. The cores are downstream from the Hudson Strait, a leading candidate for the conduit of the icebergs from the Laurentide ice sheet (LIS). We compare our results with the directly equivalent existing data in the eastern North Atlantic, and show that EW37JPC and DY001GVY have higher IRD fluxes during all Heinrich events, notably including 3 and 6. This study demonstrates that the Laurentide played a role in all Heinrich events and raises the likelihood that a single mechanism can account for their genesis. Dataset Hudson Strait Ice Sheet Labrador Sea North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Hudson Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) ENVELOPE(-46.280000,-45.508300,50.159200,43.680000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Heinrich event IRD flux Lamont-Doherty Earth Observatory Columbia University LDEO thorium normalization Western North Atlantic |
spellingShingle |
Heinrich event IRD flux Lamont-Doherty Earth Observatory Columbia University LDEO thorium normalization Western North Atlantic Zhou, Yuxin McManus, Jerry F Jacobel, Allison W Costa, Kassandra M Wang, Shouyi Caraveo, Blanca Alvarez IRD flux and supporting data on two cores in the western North Atlantic |
topic_facet |
Heinrich event IRD flux Lamont-Doherty Earth Observatory Columbia University LDEO thorium normalization Western North Atlantic |
description |
A series of catastrophic iceberg discharges termed Heinrich events punctuated the last ice age in the North Atlantic. During Heinrich events, coarse terrigenous debris released from the drifting icebergs and preserved in deep-sea sediments serves as an indicator of their passage. Quantifying the vertical flux of ice-rafted debris (IRD) in pelagic sediments can resolve questions regarding the timing and variation in ice sheet calving intensity. In this study, 230Thxs-based IRD flux was measured throughout the last glacial period in a deep-sea sediment core from the western North Atlantic (EW9303-37JPC, 43.68°N, 46.28°W, 3981 m), and complemented during Marine Isotope Stages (MIS) 1-3 by measurements from DY081-GVY01 (50.16°N, 45.51°W, 3721m) in the Labrador Sea. The cores are downstream from the Hudson Strait, a leading candidate for the conduit of the icebergs from the Laurentide ice sheet (LIS). We compare our results with the directly equivalent existing data in the eastern North Atlantic, and show that EW37JPC and DY001GVY have higher IRD fluxes during all Heinrich events, notably including 3 and 6. This study demonstrates that the Laurentide played a role in all Heinrich events and raises the likelihood that a single mechanism can account for their genesis. |
format |
Dataset |
author |
Zhou, Yuxin McManus, Jerry F Jacobel, Allison W Costa, Kassandra M Wang, Shouyi Caraveo, Blanca Alvarez |
author_facet |
Zhou, Yuxin McManus, Jerry F Jacobel, Allison W Costa, Kassandra M Wang, Shouyi Caraveo, Blanca Alvarez |
author_sort |
Zhou, Yuxin |
title |
IRD flux and supporting data on two cores in the western North Atlantic |
title_short |
IRD flux and supporting data on two cores in the western North Atlantic |
title_full |
IRD flux and supporting data on two cores in the western North Atlantic |
title_fullStr |
IRD flux and supporting data on two cores in the western North Atlantic |
title_full_unstemmed |
IRD flux and supporting data on two cores in the western North Atlantic |
title_sort |
ird flux and supporting data on two cores in the western north atlantic |
publisher |
PANGAEA |
publishDate |
2020 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.911512 https://doi.org/10.1594/PANGAEA.911512 |
op_coverage |
MEDIAN LATITUDE: 46.644723 * MEDIAN LONGITUDE: -45.926899 * SOUTH-BOUND LATITUDE: 43.680000 * WEST-BOUND LONGITUDE: -46.280000 * NORTH-BOUND LATITUDE: 50.159200 * EAST-BOUND LONGITUDE: -45.508300 * DATE/TIME START: 1993-07-13T00:00:00 * DATE/TIME END: 2017-07-08T11:24:00 |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) ENVELOPE(-46.280000,-45.508300,50.159200,43.680000) |
geographic |
Hudson Hudson Strait |
geographic_facet |
Hudson Hudson Strait |
genre |
Hudson Strait Ice Sheet Labrador Sea North Atlantic |
genre_facet |
Hudson Strait Ice Sheet Labrador Sea North Atlantic |
op_relation |
Zhou, Yuxin; McManus, Jerry F; Jacobel, Allison W; Costa, Kassandra M; Wang, Shouyi; Caraveo, Blanca Alvarez (2021): Enhanced iceberg discharge in the western North Atlantic during all Heinrich events of the last glaciation. Earth and Planetary Science Letters, 564, 116910, https://doi.org/10.1016/j.epsl.2021.116910 https://doi.pangaea.de/10.1594/PANGAEA.911512 https://doi.org/10.1594/PANGAEA.911512 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.91151210.1016/j.epsl.2021.116910 |
_version_ |
1800753040093872128 |