PANGAEA_930736
Centennial scale denitrification variability based on isotopic and geochemical proxies from the Arabian Sea since the last glacial period
Tiwari, Manish; Nagoji, Sidhesh
Centennial scale denitrification variability based on isotopic and geochemical proxies from the Arabian Sea since the last glacial period
2021-04-23
PANGAEA
Dataset
https://doi.pangaea.de/10.1594/PANGAEA.930736
Investigator
Manish
Tiwari
manish@ncpor.res.in
Earth Science
AGE
Carbon, organic, total
δ13C, total organic carbon
Nitrogen, total
δ15N
Carbon/Nitrogen ratio
geoscientificInformation
Arabian Sea
Carbon isotopes
Denitrification
Foraminifera abundance
G. bulloides
geochemical archives
global
Gravity corer
Monsoons
nitrogen isotope
organic carbon (OC)
Paleoceanography
paleoclimatology
Quaternary
SK274
SK274-4G
Stable isotopes
Teleconnection
ventilation
Isotope Ratio Mass Spectrometer, IsoPrime
Sagar Kanya
Complete
13.98333
13.98333
72.0
72.0
unrestricted
CC-BY-4.0: Creative Commons Attribution 4.0 International
English
PANGAEA
Data Publisher for Earth & Environmental Science
https://www.pangaea.de/
Data Center Contact
Michael
Diepenbroek
info@pangaea.de
Leobener Str.
Bremen
Bremen
28359
Germany
online
1280 data points
text/tab-separated-values
Nagoji, Sidhesh; Tiwari, Manish (2021): Causes and Climatic Influence of Centennial Scale Denitrification Variability in the Southeastern Arabian Sea since the Last Glacial Period. Quaternary Research, 1-13, https://doi.org/10.1017/qua.2020.118
Isotopic (nitrogen and carbon isotope ratio of sedimentary organic matter), geochemical (total organic carbon and total nitrogen content of sediment), and micropaleontological (Globigerina bulloides abundance) analyses were done in samples from a marine sediment core. This gravity-core was collected during the 274th cruise of the ORV Sagar Kanya from the Southeastern Arabian Sea. The chronology of the core is based on nine radiocarbon dates obtained using two species of planktic foraminifera (Globigerinoides ruber, Globigerinoides sacculifer; size range: 250–420 μm). It spans the last ~ 43 thousand years and the average resolution is ~150 years. For total organic carbon concentration and carbon isotope ratio estimation, carbonate was removed by treating the sample with 2N hydrochloric acid for 16 hours followed by centrifuging. Given the known problems of loss of nitrogen compounds from the sedimentary organic matter on acidification of samples, resulting in a bias in nitrogen content and nitrogen isotope ratios, untreated samples were used for their analysis. This data was used to study centennial-scale denitrification and productivity variability from the Southeastern Arabian Sea. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.930736"!
http://en.wikipedia.org/wiki/Kyr
AGE
https://doi.org/10.1017/qua.2020.118
Causes and Climatic Influence of Centennial Scale Denitrification Variability in the Southeastern Arabian Sea since the Last Glacial Period
DIF
9.4
2021-04-23
2026-04-30