(Table 1) Oxygen isotope composition and comparison between ages and sea surface temperature from sediment core KH-79-3_L-3
The Japan Sea experienced bottom water anoxia at the last glacial maximum (LGM) since it is surrounded by four shallow straits, the sill depths of which are close to, or shallower than, the drop in sea level (~120 m) that occurred then. A distinctive negative d18O excursion of planktonic foraminifer...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.802169 2023-05-15T17:14:58+02:00 (Table 1) Oxygen isotope composition and comparison between ages and sea surface temperature from sediment core KH-79-3_L-3 Ishiwatari, Ryoshi Houtatsu, M Okada, H LATITUDE: 37.058300 * LONGITUDE: 134.710000 * MINIMUM DEPTH, sediment/rock: 0.01 m * MAXIMUM DEPTH, sediment/rock: 0.75 m 2001-11-19 text/tab-separated-values, 94 data points https://doi.pangaea.de/10.1594/PANGAEA.802169 https://doi.org/10.1594/PANGAEA.802169 en eng PANGAEA Ishiwatari, Ryoshi; Houtatsu, M; Okada, H (2001): Alkenone-sea surface temperatures in the Japan Sea over the past 36 kyr: warm temperatures at the last glacial maximum. Organic Geochemistry, 32(1), 57-67, https://doi.org/10.1016/S0146-6380(00)00151-0 https://doi.pangaea.de/10.1594/PANGAEA.802169 https://doi.org/10.1594/PANGAEA.802169 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Age model Calculated Calculated from UK37 (Prahl et al. 1988) Calendar age Cassidulina japonica δ18O DEPTH sediment/rock GC Gravity corer KH-79-3_L3 L3 Neogloboquadrina pachyderma dextral and/or sinistral Oki Ridge Sea surface temperature Dataset 2001 ftpangaea https://doi.org/10.1594/PANGAEA.802169 https://doi.org/10.1016/S0146-6380(00)00151-0 2023-01-20T08:59:34Z The Japan Sea experienced bottom water anoxia at the last glacial maximum (LGM) since it is surrounded by four shallow straits, the sill depths of which are close to, or shallower than, the drop in sea level (~120 m) that occurred then. A distinctive negative d18O excursion of planktonic foraminifera also took place during the LGM. This excursion has been interpreted from foraminiferal data as recording a drop in the paleosalinity of surface waters on the assumption of a constant low sea surface temperatures between 34 and 11 ka. We present here a profile of alkenone-based sea surface temperatures (alkenone-SSTs) over the past 36 kyr. Our results suggest that SSTs during the LGM were much higher than those previously assumed. After considering the factors that might affect estimation of alkenone-SSTs and comparisons of core-top alkenone-SSTs values with values for modern seawater we conclude that the higher alkenone-SSTs during the LGM are reliable and reasonable. These warm SSTs were probably caused by radiative equilibrium associated with the development of stable water stratification in the Japan Sea during the LGM. Dataset Neogloboquadrina pachyderma Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(134.710000,134.710000,37.058300,37.058300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Age model Calculated Calculated from UK37 (Prahl et al. 1988) Calendar age Cassidulina japonica δ18O DEPTH sediment/rock GC Gravity corer KH-79-3_L3 L3 Neogloboquadrina pachyderma dextral and/or sinistral Oki Ridge Sea surface temperature |
spellingShingle |
Age model Calculated Calculated from UK37 (Prahl et al. 1988) Calendar age Cassidulina japonica δ18O DEPTH sediment/rock GC Gravity corer KH-79-3_L3 L3 Neogloboquadrina pachyderma dextral and/or sinistral Oki Ridge Sea surface temperature Ishiwatari, Ryoshi Houtatsu, M Okada, H (Table 1) Oxygen isotope composition and comparison between ages and sea surface temperature from sediment core KH-79-3_L-3 |
topic_facet |
Age model Calculated Calculated from UK37 (Prahl et al. 1988) Calendar age Cassidulina japonica δ18O DEPTH sediment/rock GC Gravity corer KH-79-3_L3 L3 Neogloboquadrina pachyderma dextral and/or sinistral Oki Ridge Sea surface temperature |
description |
The Japan Sea experienced bottom water anoxia at the last glacial maximum (LGM) since it is surrounded by four shallow straits, the sill depths of which are close to, or shallower than, the drop in sea level (~120 m) that occurred then. A distinctive negative d18O excursion of planktonic foraminifera also took place during the LGM. This excursion has been interpreted from foraminiferal data as recording a drop in the paleosalinity of surface waters on the assumption of a constant low sea surface temperatures between 34 and 11 ka. We present here a profile of alkenone-based sea surface temperatures (alkenone-SSTs) over the past 36 kyr. Our results suggest that SSTs during the LGM were much higher than those previously assumed. After considering the factors that might affect estimation of alkenone-SSTs and comparisons of core-top alkenone-SSTs values with values for modern seawater we conclude that the higher alkenone-SSTs during the LGM are reliable and reasonable. These warm SSTs were probably caused by radiative equilibrium associated with the development of stable water stratification in the Japan Sea during the LGM. |
format |
Dataset |
author |
Ishiwatari, Ryoshi Houtatsu, M Okada, H |
author_facet |
Ishiwatari, Ryoshi Houtatsu, M Okada, H |
author_sort |
Ishiwatari, Ryoshi |
title |
(Table 1) Oxygen isotope composition and comparison between ages and sea surface temperature from sediment core KH-79-3_L-3 |
title_short |
(Table 1) Oxygen isotope composition and comparison between ages and sea surface temperature from sediment core KH-79-3_L-3 |
title_full |
(Table 1) Oxygen isotope composition and comparison between ages and sea surface temperature from sediment core KH-79-3_L-3 |
title_fullStr |
(Table 1) Oxygen isotope composition and comparison between ages and sea surface temperature from sediment core KH-79-3_L-3 |
title_full_unstemmed |
(Table 1) Oxygen isotope composition and comparison between ages and sea surface temperature from sediment core KH-79-3_L-3 |
title_sort |
(table 1) oxygen isotope composition and comparison between ages and sea surface temperature from sediment core kh-79-3_l-3 |
publisher |
PANGAEA |
publishDate |
2001 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.802169 https://doi.org/10.1594/PANGAEA.802169 |
op_coverage |
LATITUDE: 37.058300 * LONGITUDE: 134.710000 * MINIMUM DEPTH, sediment/rock: 0.01 m * MAXIMUM DEPTH, sediment/rock: 0.75 m |
long_lat |
ENVELOPE(134.710000,134.710000,37.058300,37.058300) |
genre |
Neogloboquadrina pachyderma Planktonic foraminifera |
genre_facet |
Neogloboquadrina pachyderma Planktonic foraminifera |
op_relation |
Ishiwatari, Ryoshi; Houtatsu, M; Okada, H (2001): Alkenone-sea surface temperatures in the Japan Sea over the past 36 kyr: warm temperatures at the last glacial maximum. Organic Geochemistry, 32(1), 57-67, https://doi.org/10.1016/S0146-6380(00)00151-0 https://doi.pangaea.de/10.1594/PANGAEA.802169 https://doi.org/10.1594/PANGAEA.802169 |
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.802169 https://doi.org/10.1016/S0146-6380(00)00151-0 |
_version_ |
1766073096449556480 |