Upwelling index from IODP Site 323-U1343
High latitude deep water upwelling has the potential to control global climate over glacial timescales through the biological pump and ocean-atmosphere CO2 exchange. However, there is currently a lack of continuous long nutrient upwelling records with which to assess this mechanism. This study prese...
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.906166 https://doi.org/10.1594/PANGAEA.906166 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.906166 2023-05-15T15:43:20+02:00 Upwelling index from IODP Site 323-U1343 Worne, Savannah LATITUDE: 57.556650 * LONGITUDE: -175.816090 * DATE/TIME START: 2009-08-07T00:00:00 * DATE/TIME END: 2009-08-13T00:00:00 * MINIMUM ELEVATION: -1952.0 m * MAXIMUM ELEVATION: -1952.0 m 2019-09-20 text/tab-separated-values, 422 data points https://doi.pangaea.de/10.1594/PANGAEA.906166 https://doi.org/10.1594/PANGAEA.906166 en eng PANGAEA Worne, Savannah; Kender, Sev; Swann, George E A; Leng, Melanie J; Ravelo, Ana Christina (2019): Coupled climate and subarctic Pacific nutrient upwelling over the last 850,000 years. Earth and Planetary Science Letters, 522, 87-97, https://doi.org/10.1016/j.epsl.2019.06.028 Upwelling index equation (URI: https://download.pangaea.de/reference/113146/attachments/Upwelling_index_equation.pdf) https://doi.pangaea.de/10.1594/PANGAEA.906166 https://doi.org/10.1594/PANGAEA.906166 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY 323-U1343 AGE Bering Sea Bering Sea Paleoceanography CO2 COMPCORE Composite Core Exp323 Glacial Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Sea ice subarctic Upwelling Upwelling index Dataset 2019 ftpangaea https://doi.org/10.1594/PANGAEA.906166 https://doi.org/10.1016/j.epsl.2019.06.028 2023-01-20T09:12:43Z High latitude deep water upwelling has the potential to control global climate over glacial timescales through the biological pump and ocean-atmosphere CO2 exchange. However, there is currently a lack of continuous long nutrient upwelling records with which to assess this mechanism. This study presents a new high resolution long sedimentary nitrogen isotope record from IODP Site U1343 in the Bering Sea green belt, where we assume that the sedimentary bulk N is a representation of total macronutrient utilisation. By accounting for changes in export production, we normalise the opal mass accumulation rate (MAR) and produce the first high latitude record of nutrient delivery from deep to surface water (termed the “upwelling index”). By semi-quantitatively assessing the offset between the opal MAR and N in this way, we constrain the impact of local growth rate and iron supply, to reveal long-term variability in macronutrient supply from deep water upwelling. Dataset Bering Sea Sea ice Subarctic PANGAEA - Data Publisher for Earth & Environmental Science Bering Sea ENVELOPE(-175.816090,-175.816090,57.556650,57.556650) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
323-U1343 AGE Bering Sea Bering Sea Paleoceanography CO2 COMPCORE Composite Core Exp323 Glacial Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Sea ice subarctic Upwelling Upwelling index |
spellingShingle |
323-U1343 AGE Bering Sea Bering Sea Paleoceanography CO2 COMPCORE Composite Core Exp323 Glacial Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Sea ice subarctic Upwelling Upwelling index Worne, Savannah Upwelling index from IODP Site 323-U1343 |
topic_facet |
323-U1343 AGE Bering Sea Bering Sea Paleoceanography CO2 COMPCORE Composite Core Exp323 Glacial Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Sea ice subarctic Upwelling Upwelling index |
description |
High latitude deep water upwelling has the potential to control global climate over glacial timescales through the biological pump and ocean-atmosphere CO2 exchange. However, there is currently a lack of continuous long nutrient upwelling records with which to assess this mechanism. This study presents a new high resolution long sedimentary nitrogen isotope record from IODP Site U1343 in the Bering Sea green belt, where we assume that the sedimentary bulk N is a representation of total macronutrient utilisation. By accounting for changes in export production, we normalise the opal mass accumulation rate (MAR) and produce the first high latitude record of nutrient delivery from deep to surface water (termed the “upwelling index”). By semi-quantitatively assessing the offset between the opal MAR and N in this way, we constrain the impact of local growth rate and iron supply, to reveal long-term variability in macronutrient supply from deep water upwelling. |
format |
Dataset |
author |
Worne, Savannah |
author_facet |
Worne, Savannah |
author_sort |
Worne, Savannah |
title |
Upwelling index from IODP Site 323-U1343 |
title_short |
Upwelling index from IODP Site 323-U1343 |
title_full |
Upwelling index from IODP Site 323-U1343 |
title_fullStr |
Upwelling index from IODP Site 323-U1343 |
title_full_unstemmed |
Upwelling index from IODP Site 323-U1343 |
title_sort |
upwelling index from iodp site 323-u1343 |
publisher |
PANGAEA |
publishDate |
2019 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.906166 https://doi.org/10.1594/PANGAEA.906166 |
op_coverage |
LATITUDE: 57.556650 * LONGITUDE: -175.816090 * DATE/TIME START: 2009-08-07T00:00:00 * DATE/TIME END: 2009-08-13T00:00:00 * MINIMUM ELEVATION: -1952.0 m * MAXIMUM ELEVATION: -1952.0 m |
long_lat |
ENVELOPE(-175.816090,-175.816090,57.556650,57.556650) |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea Sea ice Subarctic |
genre_facet |
Bering Sea Sea ice Subarctic |
op_relation |
Worne, Savannah; Kender, Sev; Swann, George E A; Leng, Melanie J; Ravelo, Ana Christina (2019): Coupled climate and subarctic Pacific nutrient upwelling over the last 850,000 years. Earth and Planetary Science Letters, 522, 87-97, https://doi.org/10.1016/j.epsl.2019.06.028 Upwelling index equation (URI: https://download.pangaea.de/reference/113146/attachments/Upwelling_index_equation.pdf) https://doi.pangaea.de/10.1594/PANGAEA.906166 https://doi.org/10.1594/PANGAEA.906166 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.906166 https://doi.org/10.1016/j.epsl.2019.06.028 |
_version_ |
1766377410206367744 |