noaa-coral-1887
Tongue of the Ocean - Sclerosponge Stable Isotope Data
Swart, P.K.; Torrold, S.; Esienhauer, A.; Rosenheim, B.; Harrison, C.G.A.; Grammer, M.; Latkoczy, C.
Tongue of the Ocean - Sclerosponge Stable Isotope Data
2002-07-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/1887
Investigator
P.K.
Swart
Investigator
S.
Torrold
Investigator
A.
Esienhauer
Investigator
B.
Rosenheim
Investigator
C.G.A.
Harrison
Investigator
M.
Grammer
Investigator
C.
Latkoczy
earth science
paleoclimate
corals and sclerosponges
delta 13C,Ceratoporella nicholsoni,null,per mil VPDB,annual,corals and sclerosponges,averaged,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
corals and sclerosponges
age,null,null,null,null,corals and sclerosponges,null,null,N,null
earth science
paleoclimate
corals and sclerosponges
delta 18O,Ceratoporella nicholsoni,null,per mil VPDB,annual,corals and sclerosponges,averaged,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
corals and sclerosponges
oxygen isotopes
earth science
paleoclimate
corals and sclerosponges
carbon isotopes
geoscientificInformation
1885 AD
1992 AD
65 cal yr BP
-42 cal yr BP
Complete
23.92
23.92
-76.83
-76.83
-146
-146
Ocean
Atlantic Ocean
North Atlantic Ocean
Caribbean Sea
Bahamas
Tongue of the Ocean>LATITUDE 23.92>LONGITUDE -76.83
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
Swart, P.K., S. Torrold, A. Esienhauer, B. Rosenheim, C.G.A. Harrison, M. Grammer, and C. Latkoczy. 2002. Intra-annual variation in the stable oxygen and carbon and trace element composition of sclerosponges. Paleoceanography 17(3):1045.
This paper presents data to support the presence of (i) intra-annual signals in the chemical composition of the skeletons of sclerosponges from the Bahamas, and (ii) variable rates of skeletal accretion. These conclusions are based on data obtained by using a microsampling method for the stable oxygen and carbon isotopes in which material was extracted at a resolution of one sample every 32 mm and a laser microprobe which obtained trace element data every 20 mm (Sr, Mg, and Pb). An age model was established using a combination of U-Th dating, changes in the concentration of Pb, and the change in the d13C of the skeleton of the sclerosponges. These methods yield a mean growth rate of 220 mm/yr, but suggest that the growth rate in this particular sclerosponge was in fact not constant and varied between 100 and 400 mm/yr. The variable growth rate was confirmed through spectral analysis of the d18O and Sr/Ca data that showed peaks corresponding to the annual cycle in these parameters as well as peaks corresponding to growth rates of approximately 128, 212, 270, and 400 mm/yr. The presence of these additional frequencies suggests a growth rate between approximately 100 and 400 mm/yr. These conclusions were supported by modeling of oxygen isotopic data measured on a scleractinian coral as well as model isotope data generated on synthetic time series. These findings have important implications for the use of sclerosponges as proxies of paleoclimate, because they emphasize the need for a precise yearly chronology in order that proxy data can be compared with climatic variables such as the North Atlantic Oscillation or the Atlantic Multidecadal Oscillation.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/bahamas-sclerosponge-2002.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11