noaa-ocean-6420
Equatorial Pacific Sediment Composition and Radionuclide Data
Bradtmiller, L.I.; Anderson, R.F.; Fleisher, M.Q.; Burckle, L.H.
Equatorial Pacific Sediment Composition and Radionuclide Data
2006-07-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/6420
Investigator
L.I.
Bradtmiller
Investigator
R.F.
Anderson
Investigator
M.Q.
Fleisher
Investigator
L.H.
Burckle
earth science
paleoclimate
paleoceanography
biogenic silica,sediment,null,percent,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
230Th,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,238th mass flux
earth science
paleoclimate
paleoceanography
230Th,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,244th mass flux
earth science
paleoclimate
paleoceanography
230Th,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,247th mass flux
earth science
paleoclimate
paleoceanography
230Th,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,245th mass flux
earth science
paleoclimate
paleoceanography
230Th,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,240th mass flux
earth science
paleoclimate
paleoceanography
230Th,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,241st mass flux
earth science
paleoclimate
paleoceanography
230Th,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,242nd mass flux
earth science
paleoclimate
paleoceanography
231Pa,sediment,unspecified margin of error,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,radiocarbon ages
earth science
paleoclimate
paleoceanography
230Th,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,246th mass flux
earth science
paleoclimate
paleoceanography
231Pa/230Th excess,sediment,null,dimensionless,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
234U,sediment,unspecified margin of error,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
230Th,sediment,unspecified margin of error,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
230Th excess,sediment,null,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
232Th,sediment,unspecified margin of error,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
230Th,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,239th mass flux
earth science
paleoclimate
paleoceanography
230Th,sediment,null,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
age,null,unspecified margin of error,radiocarbon year before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
234U,sediment,null,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
calcium carbonate,sediment,null,weight percent,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
230Th,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,243rd mass flux
earth science
paleoclimate
paleoceanography
231Pa,sediment,null,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
238U,sediment,unspecified margin of error,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
230Th,sediment,null,gram per square centimeter per kiloyear,null,paleoceanography,null,null,N,237th mass flux
earth science
paleoclimate
paleoceanography
231Pa excess,sediment,null,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
232Th,sediment,null,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
238U,sediment,null,disintegration per minute per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
radiogenic isotope
earth science
paleoclimate
paleocean
lithology
earth science
paleoclimate
paleocean
age control
geoscientificInformation
475800 cal yr BP
0 cal yr BP
Complete
-5.52
2
-179.42
161
-4354
-1900
Ocean
Pacific Ocean
South Pacific Ocean
RC11-238>LATITUDE -1.52>LONGITUDE -85.82
Ocean
Pacific Ocean
South Pacific Ocean
TT013-PC18>LATITUDE -1.83>LONGITUDE -139.7
Ocean
Pacific Ocean
South Pacific Ocean
MW91-9 GGC48>LATITUDE 0>LONGITUDE 161
Ocean
Pacific Ocean
North Pacific Ocean
TT013-PC72>LATITUDE .1>LONGITUDE -139.4
Ocean
Pacific Ocean
South Pacific Ocean
V19-30>LATITUDE -3>LONGITUDE -83
Ocean
Pacific Ocean
South Pacific Ocean
V21-40>LATITUDE -5.52>LONGITUDE -106.77
Ocean
Pacific Ocean
South Pacific Ocean
RC13-114>LATITUDE -1.65>LONGITUDE -103.63
Ocean
Pacific Ocean
North Pacific Ocean
RC17-177>LATITUDE 2>LONGITUDE 159
Ocean
Pacific Ocean
North Pacific Ocean
V28-203>LATITUDE .95>LONGITUDE -179.42
Ocean
Pacific Ocean
South Pacific Ocean
MD97-2138>LATITUDE -1.25>LONGITUDE 146.23
Ocean
Pacific Ocean
South Pacific Ocean
RC13-140>LATITUDE -2.87>LONGITUDE -87.75
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
Bradtmiller, L.I., R.F. Anderson, M.Q. Fleisher, and L.H. Burckle. 2006. Diatom productivity in the equatorial Pacific Ocean from the last glacial period to the present: A test of the silicic acid leakage hypothesis. Paleoceanography, 21, PA4201.
The silicic acid leakage hypothesis (SALH) suggests that during glacial periods, unused silicic acid escaped the Southern Ocean into the equatorial oceans, causing an ecological shift favoring diatoms relative to coccolithophorids and a drawdown of CO2. The 230Th normalized opal fluxes and 231Pa/230Th ratios were measured in eleven equatorial Pacific cores to reconstruct diatom productivity over the past 30 kyr and to test the SALH. Holocene spatial patterns of opal flux are strongly correlated with 231Pa/230Th ratios and with satellite estimates of primary productivity. Down-core opal flux records do not support the SALH but show Holocene opal burial to exceed that of the late glacial period by 35%, or 2.8 Gt opal/kyr, across the equatorial Pacific. This suggests that the SALH may not account for lower atmospheric CO2 levels during the late glacial. However, the data do support results from previous studies that invoke increased El Niņoŋlike conditions during this time.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/v19-30lb-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/r13140lb-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/v21-40lb-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/rc13-114-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/tpc18-lb-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/r11238lb-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/m9-ggc48-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/r17177lb-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/m97-2138-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/tpc72-lb-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/v28203lb-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bradtmiller2006
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11