noaa-ocean-8458
Kuroshio-Oyashio Transition Area 40KYr Alkenone SST Estimates
Harada, N.; Ahagon, N.; Uchida, M.; Murayama, M.
Kuroshio-Oyashio Transition Area 40KYr Alkenone SST Estimates
2004-07-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/8458
Investigator
N.
Harada
Investigator
N.
Ahagon
Investigator
M.
Uchida
Investigator
M.
Murayama
earth science
paleoclimate
climate reconstructions|paleoceanography
sea surface temperature,alkenone unsaturation index,one standard deviation,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,standard deviation estimated from duplicate analysis
earth science
paleoclimate
paleoceanography
age,null,null,calendar year before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
alkenone,null,null,microgram per gram,null,paleoceanography,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleoceanography
sea surface temperature,alkenone unsaturation index,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
alkenone unsaturation index Uk37 prime,null,null,dimensionless,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
biomarkers
earth science
paleoclimate
paleocean
reconstruction
earth science
paleoclimate
paleocean
age control
geoscientificInformation
39300 14C yr BP
0 14C yr BP
43291 cal yr BP
0 cal yr BP
Complete
37.75
49.367
152.533
170.167
-5498
-1780
Ocean
Pacific Ocean
North Pacific Ocean
PC-04>LATITUDE 49.367>LONGITUDE 153.017
Ocean
Pacific Ocean
North Pacific Ocean
PC-01>LATITUDE 46.317>LONGITUDE 152.533
Ocean
Pacific Ocean
North Pacific Ocean
Station 5>LATITUDE 40>LONGITUDE 165.067
Ocean
Pacific Ocean
North Pacific Ocean
Station 6>LATITUDE 37.75>LONGITUDE 162.717
Ocean
Pacific Ocean
North Pacific Ocean
Station 8s>LATITUDE 44.783>LONGITUDE 170.167
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
Harada, N., N. Ahagon, M. Uchida, and M. Murayama. 2004. Northward and southward migrations of frontal zones during the past 40 kyr in the Kuroshio-Oyashio transition area. Geochem. Geophys. Geosyst., 5, Q09004.
The variation of sea surface temperature (SST) in the Kuroshio-Oyashio transition area and the Okhotsk Sea during the last 40 kyr was estimated using long-chain unsaturated alkyl ketones (alkenones). The temperature difference between the present and the last glacial period was about 5-6 C in the Kuroshio-Oyashio transition area, slightly larger than the 4 C previously reported. Moreover, alkenones were not detected before 18 kyr B.P. in or near the Okhotsk Sea, perhaps because of nearly year-round sea-ice expansion, which would have prevented the growth of alkenone producers, or because alkenones were less well preserved in surface sediments during the glacial period. The northward and southward migrations of frontal zones were evaluated using differences in alkenone temperatures between stations located in the vicinity of the Subarctic Front (SAF), Subarctic Boundary (SAB), and Kuroshio Bifurcation Front (KBF). All three frontal zones migrated southward during the glacial period, compared with their present positions, and their relative positions were different between the Holocene and glacial periods. In particular, the distance between the SAF and the SAB was reduced during the glacial period compared with at present. The northward and southward migration of the frontal zones may relate to both mid to low atmospheric circulation and polar atmospheric circulation.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/harada2004
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/station8-tab.txt
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https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/station6-tab.txt
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https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/pc-01-sytr-tab.txt
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https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/pc-01-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/pc-04-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/pc-04-sytr-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/station5-tab.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11