Stable isotope record of foraminifera from sediment core EW9209-1JPC
Stable isotopic measurements of G. sacculifer and C. wuellerstorfi in a core from the western equatorial Atlantic imply that there are parallel, suborbital oscillations in surface water hydrography and deep water circulation occurring during oxygen isotope stages 2 and 3. Low values of G. sacculifer...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.730044 2023-05-15T13:42:09+02:00 Stable isotope record of foraminifera from sediment core EW9209-1JPC Curry, William B Oppo, Delia W LATITUDE: 5.906700 * LONGITUDE: -44.195000 1997-12-18 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.730044 https://doi.org/10.1594/PANGAEA.730044 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.730044 https://doi.org/10.1594/PANGAEA.730044 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Curry, William B; Oppo, Delia W (1997): Synchronous, high-frequency oscillations in tropical sea surface temperatures and North Atlantic Deep Water productivity during the last glacial cycle. Paleoceanography, 12(1), 1-14, https://doi.org/10.1029/96PA02413 EW9209-1JPC PC Piston corer Dataset 1997 ftpangaea https://doi.org/10.1594/PANGAEA.730044 https://doi.org/10.1029/96PA02413 2023-01-20T07:31:36Z Stable isotopic measurements of G. sacculifer and C. wuellerstorfi in a core from the western equatorial Atlantic imply that there are parallel, suborbital oscillations in surface water hydrography and deep water circulation occurring during oxygen isotope stages 2 and 3. Low values of G. sacculifer delta18O accompany high values of C. wuellerstorfi delta13C, linking warmer sea surface temperatures (SSTs) in the tropics with increased production of lower North Atlantic Deep Water (NADW). The amplitude of the delta18O oscillations is 0.6 per mil (or 2°-3°C), which is superimposed on a glacial/interglacial amplitude of about 2.1per mil. Using the G. sacculifer delta18O data, we calculate that surface waters were colder during stage 2 than calculated by CLIMAP [1976, 1981]. The longer-period (>2 kyr) oscillations in air temperature recorded in the Greenland and Antarctic ice cores appear to correlate with oscillations in sea surface temperature in the equatorial Atlantic. The magnitude of these oscillations in tropical SST is too large to have resulted from changes in meridional heat transport caused by the global conveyor alone. The apparent synchroneity of equatorial SST and polar air temperature changes, as well as the amplitude of the SST changes at the equator, are consistent with the climate effects expected from changes in the atmosphere's greenhouse gas content (H2Ovapor, CO2, and CH4). Dataset Antarc* Antarctic Greenland NADW North Atlantic Deep Water North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Greenland ENVELOPE(-44.195000,-44.195000,5.906700,5.906700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
EW9209-1JPC PC Piston corer |
spellingShingle |
EW9209-1JPC PC Piston corer Curry, William B Oppo, Delia W Stable isotope record of foraminifera from sediment core EW9209-1JPC |
topic_facet |
EW9209-1JPC PC Piston corer |
description |
Stable isotopic measurements of G. sacculifer and C. wuellerstorfi in a core from the western equatorial Atlantic imply that there are parallel, suborbital oscillations in surface water hydrography and deep water circulation occurring during oxygen isotope stages 2 and 3. Low values of G. sacculifer delta18O accompany high values of C. wuellerstorfi delta13C, linking warmer sea surface temperatures (SSTs) in the tropics with increased production of lower North Atlantic Deep Water (NADW). The amplitude of the delta18O oscillations is 0.6 per mil (or 2°-3°C), which is superimposed on a glacial/interglacial amplitude of about 2.1per mil. Using the G. sacculifer delta18O data, we calculate that surface waters were colder during stage 2 than calculated by CLIMAP [1976, 1981]. The longer-period (>2 kyr) oscillations in air temperature recorded in the Greenland and Antarctic ice cores appear to correlate with oscillations in sea surface temperature in the equatorial Atlantic. The magnitude of these oscillations in tropical SST is too large to have resulted from changes in meridional heat transport caused by the global conveyor alone. The apparent synchroneity of equatorial SST and polar air temperature changes, as well as the amplitude of the SST changes at the equator, are consistent with the climate effects expected from changes in the atmosphere's greenhouse gas content (H2Ovapor, CO2, and CH4). |
format |
Dataset |
author |
Curry, William B Oppo, Delia W |
author_facet |
Curry, William B Oppo, Delia W |
author_sort |
Curry, William B |
title |
Stable isotope record of foraminifera from sediment core EW9209-1JPC |
title_short |
Stable isotope record of foraminifera from sediment core EW9209-1JPC |
title_full |
Stable isotope record of foraminifera from sediment core EW9209-1JPC |
title_fullStr |
Stable isotope record of foraminifera from sediment core EW9209-1JPC |
title_full_unstemmed |
Stable isotope record of foraminifera from sediment core EW9209-1JPC |
title_sort |
stable isotope record of foraminifera from sediment core ew9209-1jpc |
publisher |
PANGAEA |
publishDate |
1997 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.730044 https://doi.org/10.1594/PANGAEA.730044 |
op_coverage |
LATITUDE: 5.906700 * LONGITUDE: -44.195000 |
long_lat |
ENVELOPE(-44.195000,-44.195000,5.906700,5.906700) |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland NADW North Atlantic Deep Water North Atlantic |
genre_facet |
Antarc* Antarctic Greenland NADW North Atlantic Deep Water North Atlantic |
op_source |
Supplement to: Curry, William B; Oppo, Delia W (1997): Synchronous, high-frequency oscillations in tropical sea surface temperatures and North Atlantic Deep Water productivity during the last glacial cycle. Paleoceanography, 12(1), 1-14, https://doi.org/10.1029/96PA02413 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.730044 https://doi.org/10.1594/PANGAEA.730044 |
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.730044 https://doi.org/10.1029/96PA02413 |
_version_ |
1766163645746642944 |