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Northwest Pacific MD01-2421 Glacial/Interglacial d18O Data and SST Reconstruction

Federal Geographic Data Committee (FGDC) Metadata:

Identification_Information
Data_Quality_Information
Spatial_Reference_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Oba, T., T. Irino, M. Yamamoto, M. Murayama, A. Takamura, and K. Aoki

Publication_Date: 9/2006

Title: Northwest Pacific MD01-2421 Glacial/Interglacial d18O Data and SST Reconstruction

Edition:

Geospatial_Data_Presentation_Form:

Series_Information:

Series_Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER:2006-085
Issue_Identification: 2006-085

Publication_Information:

Publication_Place: Boulder CO
Publisher: IGBP PAGES/World Data Center for Paleoclimatology

Other_Citation_Details:

NOAA/NCDC Paleoclimatology Program

Online_Linkage: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/oba2006/oba2006.txt

Description:

Abstract:: Oxygen and carbon isotopes of both benthic and planktonic foraminifera were measured in an IMAGES giant piston core (MD01-2421, 36°01.4'N, 141°46.8'E, \2224m. water depth, length 45.82m) collected from the area off the east coast of central Japan, in the northwest Pacific. Paleo-SST at the core site for the last 144,000 years was calculated from oxygen isotope differences between benthic and planktonic foraminifera, based on an assumption of latitudinal movements of the oceanic condition similar to the present day. Samples for oxygen and carbon isotope measurements of foraminiferal tests were collected at about 15 cm intervals. Each sample was taken using a plastic cube of 2.2 cm3. The sample was dried with a freeze drier and washed using a 63 um sieve after ultrasonic cleaning. About 40 individuals for planktonic and 20 specimens for benthic foraminifera were selected with a test size range between 150 and 250 um for Globigerina bulloides and Bulimina aculeata, and those between 250 and 355 um for Globorotalia inflata and Uvigerina spp. The procedure for the isotope measurement is identical to that described by Oba and Murayama (2004). Abstract; Very large sea surface temperature (SST) fluctuations are expected in the northwest Pacific Ocean between glacial and interglacial periods due to possible latitudinal migrations of the steep SST front between the Oyashio and Kuroshio Currents. To reconstruct the SST changes for the past 144,000 years, we conducted high-resolution oxygen and carbon isotope analysis of both benthic and planktonic foraminifera from an IMAGES core off central Japan. Using a newly developed method [Oba, T., Murayama, M., 2004. Sea surface temperature and salinity changes in the northwest Pacific since the last glacial maximum. J. Quat. Sci. 19(4), 335-346] for the reconstruction of the SST, we have found very large (~20°C) SST fluctuations, with minimum SSTs of 3-4°C during Marine Isotope Stage (MIS) 2 and the MIS 6/5e transition, and with peak SSTs of 22-23°C during early MIS 1 and the MIS 5a/4, 5c/5b and 5e/5d transitions. The SSTs varied in parallel with changing carbon isotope differences between Globorotalia inflata and Globigerina bulloides, which suggests that the SST changes were primarily caused by the latitudinal displacements of the Kuroshio-Oyashio Currents. We have also found that northward shifts of the Kuroshio Current lagged up to several thousand years at these transitions. Strong correlation between the SST shifts and orbital forcing indicates that the latitudinal displacement of the Kurosho-Oyashio Currents were influenced by summer insolation at 65N associated with ENSO-like climatic variability in the tropical Pacific.
Purpose:: Not Available
Supplemental_Information:: REFERENCE: Oba, T., T. Irino, M. Yamamoto, M. Murayama, A. Takamura, and K. Aoki. 2006. Paleoceanographic change off central Japan since the last 144,000 years based on high-resolution oxygen and carbon isotope records. Global and Planetary Change, Vol. 53, pp. 5-20.

Status:

Progress: Complete
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: 141.78
East_Bounding_Coordinate: 141.78
North_Bounding_Coordinate: 36.02
South_Bounding_Coordinate: 36.02

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > STABLE ISOTOPES
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > ISOTOPES
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > MICROFOSSILS
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > OXYGEN ISOTOPES
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > PALEOCLIMATE RECONSTRUCTIONS > SEA SURFACE TEMPERATURE RECONSTRUCTION
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > AMOEBOIDS > FORAMINIFERS
Theme_Keyword: PAGES > PAST GLOBAL CHANGES, IGBP
Theme_Keyword: Sea Surface Temperature Reconstruction
Theme_Keyword: Carbon Isotopes
Theme_Keyword: Stable Isotopes
Theme_Keyword: Oxygen Isotopes
Theme_Keyword: Sst Reconstruction
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN
Place_Keyword: OCEAN > PACIFIC OCEAN > NORTHWEST PACIFIC OCEAN

Access_Constraints: Not Available

Use_Constraints:

Not Available

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: TADAMICHI OBA

Contact_Person_Primary:

Contact_Person: TOMOHISA IRINO

Contact_Person_Primary:

Contact_Person: M. YAMAMOTO

Contact_Person_Primary:

Contact_Person: M. MURAYAMA

Contact_Person_Primary:

Contact_Person: A. TAKAMURA

Contact_Person_Primary:

Contact_Person: K. AOKI

Contact_Position: INVESTIGATOR

Contact_Address:

Address_Type: Mailing and Physical Address
Address: Graduate School of Environmental Earth Science
Address: Hokkaido University
Country: Japan

Contact_Address:

Address_Type: Mailing and Physical Address

Contact_Address:

Address_Type: Mailing and Physical Address

Contact_Address:

Address_Type: Mailing and Physical Address

Contact_Address:

Address_Type: Mailing and Physical Address

Contact_Address:

Address_Type: Mailing and Physical Address

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:: Not Available

Logical_Consistency_Report:

Not Available

Completeness_Report:

Not Available

Lineage:

Process_Step:

Process_Description:: Not Available
Process_Date: Unknown

Spatial_Reference_Information:

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: WDC/PALEOCLIMATOLOGY, BOULDER > World Data Center for Paleoclimatology, Boulder
Contact_Person: WDC/PALEOCLIMATOLOGY, BOULDER

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address
Address: World Data Center for Paleoclimatology
Address: NOAA/NCDC Code E/GCx3
Address: 325 Broadway
City: Boulder
State_or_Province: CO
Postal_Code: 80303
Country: USA

Contact_Voice_Telephone: +1 (303) 497-6160

Contact_Facsimile_Telephone: +1 (303) 497-6513

Contact_Electronic_Mail_Address: paleo@noaa.gov

Resource_Description: NOAA_NCDC_PALEO_2006-085

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: text, excel

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://www.ncdc.noaa.gov/paleo/

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/b...

Access_Instructions:

Access to data and documentation

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20061218

Metadata_Review_Date: 20070412

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory

Contact_Address:

Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA

Contact_Voice_Telephone: Not Available

Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

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