(Table 1) Different age analysis from sediment cores XP98-PC-4 and XP98-PC-2
Sea-surface temperatures (SSTs) in the Sea of Okhotsk were reconstructed based on alkenone unsaturation indices in two sediment cores. Alkenone-SSTs were found to range from 3 to 9 °C over the last 85 kyr with higher SST values in warm periods: Holocene and the oxygen isotope stage (OIS) 5a. In the...
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ftdatacite:10.1594/pangaea.802149 2023-05-15T17:52:38+02:00 (Table 1) Different age analysis from sediment cores XP98-PC-4 and XP98-PC-2 Seki, Osamu Kawamura, Kimitaka Ikehara, Minoru Nakatsuka, Takeshi Oba, Tadamichi 2004 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.802149 https://doi.pangaea.de/10.1594/PANGAEA.802149 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.orggeochem.2003.10.011 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Event label DEPTH, sediment/rock Gear Age model Piston corer Age, 14C AMS dataset Dataset 2004 ftdatacite https://doi.org/10.1594/pangaea.802149 https://doi.org/10.1016/j.orggeochem.2003.10.011 2021-11-05T12:55:41Z Sea-surface temperatures (SSTs) in the Sea of Okhotsk were reconstructed based on alkenone unsaturation indices in two sediment cores. Alkenone-SSTs were found to range from 3 to 9 °C over the last 85 kyr with higher SST values in warm periods: Holocene and the oxygen isotope stage (OIS) 5a. In the last glacial periods (OIS 4 and 3), average alkenone SST was estimated to be 4 °C, which was 4 °C lower than the Holocene on average. However, alkenone SSTs around the last glacial maximum (LGM) are as high as those of the Holocene. The variation patterns of U37K' in the Okhotsk Sea were found to be similar to those reported in the Sea of Japan [Org. Chem. 32 (2001) 57] over the last 30 kyr, although the SSTs were lower in the Sea of Okhotsk. The higher U37K' values around the LGM may be a rather common phenomenon in semi-closed marginal seas such as the Japan Sea and the Okhotsk Sea, which are both adjacent to the northwestern Pacific. Such an anomaly in the LGM may have been caused by either a seasonal shift of coccolith blooming or a contribution from a different strain or species that produces alkenones : AMS: 14C ages by accelerator mass spectrometer; OIS: ages were estimated by oxygen isotope stage events;MS: ages were estimated by comparison of magnetic susceptibility in that of PC-2 dating of the ash layer was determined by comparison of PC-2 with PC-1 sediment core. Dataset okhotsk sea DataCite Metadata Store (German National Library of Science and Technology) Okhotsk Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Event label DEPTH, sediment/rock Gear Age model Piston corer Age, 14C AMS |
spellingShingle |
Event label DEPTH, sediment/rock Gear Age model Piston corer Age, 14C AMS Seki, Osamu Kawamura, Kimitaka Ikehara, Minoru Nakatsuka, Takeshi Oba, Tadamichi (Table 1) Different age analysis from sediment cores XP98-PC-4 and XP98-PC-2 |
topic_facet |
Event label DEPTH, sediment/rock Gear Age model Piston corer Age, 14C AMS |
description |
Sea-surface temperatures (SSTs) in the Sea of Okhotsk were reconstructed based on alkenone unsaturation indices in two sediment cores. Alkenone-SSTs were found to range from 3 to 9 °C over the last 85 kyr with higher SST values in warm periods: Holocene and the oxygen isotope stage (OIS) 5a. In the last glacial periods (OIS 4 and 3), average alkenone SST was estimated to be 4 °C, which was 4 °C lower than the Holocene on average. However, alkenone SSTs around the last glacial maximum (LGM) are as high as those of the Holocene. The variation patterns of U37K' in the Okhotsk Sea were found to be similar to those reported in the Sea of Japan [Org. Chem. 32 (2001) 57] over the last 30 kyr, although the SSTs were lower in the Sea of Okhotsk. The higher U37K' values around the LGM may be a rather common phenomenon in semi-closed marginal seas such as the Japan Sea and the Okhotsk Sea, which are both adjacent to the northwestern Pacific. Such an anomaly in the LGM may have been caused by either a seasonal shift of coccolith blooming or a contribution from a different strain or species that produces alkenones : AMS: 14C ages by accelerator mass spectrometer; OIS: ages were estimated by oxygen isotope stage events;MS: ages were estimated by comparison of magnetic susceptibility in that of PC-2 dating of the ash layer was determined by comparison of PC-2 with PC-1 sediment core. |
format |
Dataset |
author |
Seki, Osamu Kawamura, Kimitaka Ikehara, Minoru Nakatsuka, Takeshi Oba, Tadamichi |
author_facet |
Seki, Osamu Kawamura, Kimitaka Ikehara, Minoru Nakatsuka, Takeshi Oba, Tadamichi |
author_sort |
Seki, Osamu |
title |
(Table 1) Different age analysis from sediment cores XP98-PC-4 and XP98-PC-2 |
title_short |
(Table 1) Different age analysis from sediment cores XP98-PC-4 and XP98-PC-2 |
title_full |
(Table 1) Different age analysis from sediment cores XP98-PC-4 and XP98-PC-2 |
title_fullStr |
(Table 1) Different age analysis from sediment cores XP98-PC-4 and XP98-PC-2 |
title_full_unstemmed |
(Table 1) Different age analysis from sediment cores XP98-PC-4 and XP98-PC-2 |
title_sort |
(table 1) different age analysis from sediment cores xp98-pc-4 and xp98-pc-2 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2004 |
url |
https://dx.doi.org/10.1594/pangaea.802149 https://doi.pangaea.de/10.1594/PANGAEA.802149 |
geographic |
Okhotsk Pacific |
geographic_facet |
Okhotsk Pacific |
genre |
okhotsk sea |
genre_facet |
okhotsk sea |
op_relation |
https://dx.doi.org/10.1016/j.orggeochem.2003.10.011 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.802149 https://doi.org/10.1016/j.orggeochem.2003.10.011 |
_version_ |
1766160314509819904 |