Nitrogen isotope ratio and oxygen isotope ratio from Arabian Sea IODP Site 355-U1456
Denitrification in the Arabian Sea is closely related to the monsoon-induced upwelling and subsequent phytoplankton production in the surface water. The δ15N values of bulk sediments collected at Site U1456 of the International Ocean Discovery Program (IODP) Expedition 355 reveal the orbital-scale d...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.911694 2023-05-15T18:01:09+02:00 Nitrogen isotope ratio and oxygen isotope ratio from Arabian Sea IODP Site 355-U1456 Kim, Ji-Eun Khim, Boo-Keun Ikehara, Minoru Lee, Jongmin MEDIAN LATITUDE: 16.621496 * MEDIAN LONGITUDE: 68.838865 * SOUTH-BOUND LATITUDE: 16.621425 * WEST-BOUND LONGITUDE: 68.838787 * NORTH-BOUND LATITUDE: 16.621567 * EAST-BOUND LONGITUDE: 68.838943 * MINIMUM DEPTH, sediment/rock: 0.06 m * MAXIMUM DEPTH, sediment/rock: 133.50 m 2020-02-03 text/tab-separated-values, 1963 data points https://doi.pangaea.de/10.1594/PANGAEA.911694 https://doi.org/10.1594/PANGAEA.911694 en eng PANGAEA Kim, Ji-Eun; Khim, Boo-Keun; Ikehara, Minoru; Lee, Jongmin (2018): Orbital-scale denitrification changes in the Eastern Arabian Sea during the last 800 kyrs. Scientific Reports, 8(1), https://doi.org/10.1038/s41598-018-25415-7 https://doi.pangaea.de/10.1594/PANGAEA.911694 https://doi.org/10.1594/PANGAEA.911694 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY 355-U1456A 355-U1456C AGE Arabian Sea Carbon total Chromium reduction destillation hot single step denitrification Depth composite sediment/rock DRILL Drilling/drill rig Event label Exp355 Globigerinoides ruber δ13C δ18O Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Depth Scale Terminology Isotope ratio mass spectrometry Joides Resolution Monsoon Nitrogen nitrogen isotope oxygen isotope oxygen minimum zone Sample code/label δ15N bulk sediment Dataset 2020 ftpangaea https://doi.org/10.1594/PANGAEA.911694 https://doi.org/10.1038/s41598-018-25415-7 2023-01-20T09:13:09Z Denitrification in the Arabian Sea is closely related to the monsoon-induced upwelling and subsequent phytoplankton production in the surface water. The δ15N values of bulk sediments collected at Site U1456 of the International Ocean Discovery Program (IODP) Expedition 355 reveal the orbital-scale denitrification history in response to the Indian Monsoon. Age reconstruction based on the correlation of planktonic foraminifera (Globigerinoides ruber) δ18O values with the LR04 stack together with the shipboard biostratigraphic and paleomagnetic data assigns the study interval to be 1.2 Ma. Comparison of δ15N values during the last 800 kyrs between Site U1456 (Eastern Arabian Sea) and Site 722B (Western Arabian Sea) showed that δ15N values were high during interglacial periods, indicating intensified denitrification, while the opposite was observed during glacial periods. Taking 6‰ as the empirical threshold of denitrification, the Eastern Arabian Sea has experienced a persistent oxygen minimum zone (OMZ) to maintain strong denitrification whereas the Western Arabian Sea has undergone OMZ breakdown during some glacial periods. The results of this study also suggests that five principal oceanographic conditions were changed in response to the Indian Monsoon following the interglacial and glacial cycles, which controls the degree of denitrification in the Arabian Sea. Dataset Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science Indian ENVELOPE(68.838787,68.838943,16.621567,16.621425) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
355-U1456A 355-U1456C AGE Arabian Sea Carbon total Chromium reduction destillation hot single step denitrification Depth composite sediment/rock DRILL Drilling/drill rig Event label Exp355 Globigerinoides ruber δ13C δ18O Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Depth Scale Terminology Isotope ratio mass spectrometry Joides Resolution Monsoon Nitrogen nitrogen isotope oxygen isotope oxygen minimum zone Sample code/label δ15N bulk sediment |
spellingShingle |
355-U1456A 355-U1456C AGE Arabian Sea Carbon total Chromium reduction destillation hot single step denitrification Depth composite sediment/rock DRILL Drilling/drill rig Event label Exp355 Globigerinoides ruber δ13C δ18O Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Depth Scale Terminology Isotope ratio mass spectrometry Joides Resolution Monsoon Nitrogen nitrogen isotope oxygen isotope oxygen minimum zone Sample code/label δ15N bulk sediment Kim, Ji-Eun Khim, Boo-Keun Ikehara, Minoru Lee, Jongmin Nitrogen isotope ratio and oxygen isotope ratio from Arabian Sea IODP Site 355-U1456 |
topic_facet |
355-U1456A 355-U1456C AGE Arabian Sea Carbon total Chromium reduction destillation hot single step denitrification Depth composite sediment/rock DRILL Drilling/drill rig Event label Exp355 Globigerinoides ruber δ13C δ18O Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Depth Scale Terminology Isotope ratio mass spectrometry Joides Resolution Monsoon Nitrogen nitrogen isotope oxygen isotope oxygen minimum zone Sample code/label δ15N bulk sediment |
description |
Denitrification in the Arabian Sea is closely related to the monsoon-induced upwelling and subsequent phytoplankton production in the surface water. The δ15N values of bulk sediments collected at Site U1456 of the International Ocean Discovery Program (IODP) Expedition 355 reveal the orbital-scale denitrification history in response to the Indian Monsoon. Age reconstruction based on the correlation of planktonic foraminifera (Globigerinoides ruber) δ18O values with the LR04 stack together with the shipboard biostratigraphic and paleomagnetic data assigns the study interval to be 1.2 Ma. Comparison of δ15N values during the last 800 kyrs between Site U1456 (Eastern Arabian Sea) and Site 722B (Western Arabian Sea) showed that δ15N values were high during interglacial periods, indicating intensified denitrification, while the opposite was observed during glacial periods. Taking 6‰ as the empirical threshold of denitrification, the Eastern Arabian Sea has experienced a persistent oxygen minimum zone (OMZ) to maintain strong denitrification whereas the Western Arabian Sea has undergone OMZ breakdown during some glacial periods. The results of this study also suggests that five principal oceanographic conditions were changed in response to the Indian Monsoon following the interglacial and glacial cycles, which controls the degree of denitrification in the Arabian Sea. |
format |
Dataset |
author |
Kim, Ji-Eun Khim, Boo-Keun Ikehara, Minoru Lee, Jongmin |
author_facet |
Kim, Ji-Eun Khim, Boo-Keun Ikehara, Minoru Lee, Jongmin |
author_sort |
Kim, Ji-Eun |
title |
Nitrogen isotope ratio and oxygen isotope ratio from Arabian Sea IODP Site 355-U1456 |
title_short |
Nitrogen isotope ratio and oxygen isotope ratio from Arabian Sea IODP Site 355-U1456 |
title_full |
Nitrogen isotope ratio and oxygen isotope ratio from Arabian Sea IODP Site 355-U1456 |
title_fullStr |
Nitrogen isotope ratio and oxygen isotope ratio from Arabian Sea IODP Site 355-U1456 |
title_full_unstemmed |
Nitrogen isotope ratio and oxygen isotope ratio from Arabian Sea IODP Site 355-U1456 |
title_sort |
nitrogen isotope ratio and oxygen isotope ratio from arabian sea iodp site 355-u1456 |
publisher |
PANGAEA |
publishDate |
2020 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.911694 https://doi.org/10.1594/PANGAEA.911694 |
op_coverage |
MEDIAN LATITUDE: 16.621496 * MEDIAN LONGITUDE: 68.838865 * SOUTH-BOUND LATITUDE: 16.621425 * WEST-BOUND LONGITUDE: 68.838787 * NORTH-BOUND LATITUDE: 16.621567 * EAST-BOUND LONGITUDE: 68.838943 * MINIMUM DEPTH, sediment/rock: 0.06 m * MAXIMUM DEPTH, sediment/rock: 133.50 m |
long_lat |
ENVELOPE(68.838787,68.838943,16.621567,16.621425) |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
Kim, Ji-Eun; Khim, Boo-Keun; Ikehara, Minoru; Lee, Jongmin (2018): Orbital-scale denitrification changes in the Eastern Arabian Sea during the last 800 kyrs. Scientific Reports, 8(1), https://doi.org/10.1038/s41598-018-25415-7 https://doi.pangaea.de/10.1594/PANGAEA.911694 https://doi.org/10.1594/PANGAEA.911694 |
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.911694 https://doi.org/10.1038/s41598-018-25415-7 |
_version_ |
1766170513292394496 |