noaa-coral-1901
Pirotan Island - Stable Isotope Data
Chakraborty, S.; Ramesh, R.
Pirotan Island - Stable Isotope Data
1998-07-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/1901
Investigator
S.
Chakraborty
Investigator
R.
Ramesh
earth science
paleoclimate
corals and sclerosponges
age,null,null,year Common Era,null,corals and sclerosponges,null,null,N,null
earth science
paleoclimate
corals and sclerosponges
delta 13C,Dipsastraea speciosa,null,per mil VPDB,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
corals and sclerosponges
delta 18O,Dipsastraea speciosa,null,per mil VPDB,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
corals and sclerosponges
oxygen isotopes
earth science
paleoclimate
corals and sclerosponges
carbon isotopes
geoscientificInformation
1948 AD
1989 AD
2 cal yr BP
-39 cal yr BP
Complete
22.6
22.6
70
70
Continent
Asia
Southcentral Asia
India
Pirotan Island>LATITUDE 22.6>LONGITUDE 70
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Chakraborty, S., and R. Ramesh. 1998. Stable isotope variations in a coral (Favia speciosa) from the Gulf of Kutch during 1948-1989 AD: Environmental implications. Proceedings of the Indian Academy of Science (Earth and Planetary Sciences) 107(4):331-341.
The stable isotopic analyses (d18O and d13C) of a coral Favia speciosaspanning forty two years (1948-1989), collected from the Pirotan island(22.6 N, 70E) in the Gulf of Kutch have been carried out to assess its potential for retrieving past environmental changes in this region. It is seen that the summer (minima) d18O variations in the coral CaCO3 are negatively correlated with seasonal (summer) monsoon rainfall in the adjoining region of Kutch and Saurashtra and a qualitative reconstructionof historical rainfall variations in this region can be obtained by analyzing the d18O in this species of coral. The observed mean seasonal range of d18O variations is 0.34 +/- 0.17 per mil (n=42), whereas the expected range calculated (from available SST and measured d18O of seawater) is ~1.1 +/- 0.15 per mil. The difference is due to the coarse resolution of sampling, which can be corrected. The seasonal range ind13C is ~1 per mil and is explained by changes in: a) the light intensityrelated to the cloudiness during monsoons and b) phytoplankton productivity.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/pirotan1998.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11