Seawater oxygen isotope data in the western Pacific
Abstract:
This study presents a new set of paired d18Osw and salinity data (n = 83) from a large region of the western Pacific (mainly the western south Pacific) collected during the 2014–2015 El Niño period. We determined regional salinity–d18Osw relationships for three ocean regions (40º–20ºN, 20ºN–30ºS, and30º–66ºS) and found that all three regions exhibited highly linear relationships between d18Osw and salinity. The 40º–20ºN and 20ºN–30ºS regions had relatively low slopes (0.33 and 0.37 ‰/psu, respectively), while the 30º–66ºS region had a relatively high slope (0.54 ‰/psu). Each regional regression was statistically different from those of the GEOSECS (1973–1974 La Niña) data, indicating that inter-annual ENSO variability has an impact on salinity–d18Osw relationships over a wide area of the western Pacific.
How to cite this dataset:
Horikawa, K., 2023. Seawater oxygen isotope data in the western Pacific, Version 1.0. Interdisciplinary Earth Data Alliance (IEDA).
https://doi.org/10.26022/IEDA/112770. Accessed 2024-07-26.
DOI Creation Date:
2023-02-07
Related
Publication(s):
Horikawa, Keiji; Kodaira, Tomohiro; Zhang, Jing; Obata, Hajime (2023): Salinity–oxygen isotope relationship during an El Niño (2014–2015) in the southwestern Pacific and comparisons with GEOSECS data (La Niña, 1973–1974). Marine Chemistry, 2023, 104222, https://doi.org/10.1016/j.marchem.2023.104222.
License:
Creative Commons Attribution-ShareAlike 4.0 International [CC-BY-SA-4.0]
Funding source(s):
JSPS KAKENHI
Keyword(s):
Coverage Scope: Regional (Continents, Oceans)
Geographic Location: Western Pacific Ocean
User Contributed Keyword(s):
GEOSECS, GEOTRACES, GP19, western Pacific, oxygen isotopic composition of seawater, salinity–d18Osw relationship, seawater d18O
Data Available On:
2023-02-08