Search Help

Thorium-234 Activity in Particulate and Dissolved Components Measured during the JGOFS Equatorial Pacific Process Study (EQPAC)

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Thorium-234 Activity in Particulate and Dissolved Components Measured during the JGOFS Equatorial Pacific Process Study (EQPAC)
Description:
Abstract:
The Equatorial Pacific Process Study (EQPAC) was conducted along 140 deg W longitude during 1992. Four cruises took place: February 3 - March 9, March 19 - April 15, August 5 - September 18, and September 24 - October 21. A fifth benthic cruise and sediment trap legs were added. During the first cruise (TT007), 15 stations were occupied along 140 deg W longitude from 12 deg N latitude to 12 deg S latitude. During the second cruise (TT008), data were collected at 8 stations along 140 deg W longitude from 9 deg S latitude to 9 deg N latitude. During the third cruise (TT011), data were collected at 15 stations along 140 deg W from 12 deg N latitude to 12 deg S latitude. During the fourth cruise (TT012), data were collected at 5 stations along 140 deg W longitude from 17 deg S latitude to the equator. Thorium-234 can be used as a tracer to estimate particle and carbon fluxes and cycling rates. Water samples were collected by in situ pump at various depths at the stations. Dissolved thorium-234 was measured by non-destructive gamma spectrometry. Particulate thorium-234 was measured in three different size classes: 0.7-1 micrometer, 1-53 micrometer, and >53 micrometer by low-level beta counting. The thorium-234 data were only collected during the second (TT008) and fourth (TT012) cruises. The data is public domain and can be retrieved on-line at "http://usjgofs.whoi.edu/jg/dir/jgofs/" [The information in this summary was taken from the JGOFS World Wide Web pages.]
Purpose:
Not Available
Supplemental_Information:
Not Available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19920319
Ending_Date: 19921021
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -140.0
East_Bounding_Coordinate: -140.0
North_Bounding_Coordinate: 12.0
South_Bounding_Coordinate: -17.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > STABLE ISOTOPES
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > BIOGEOCHEMICAL CYCLES
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OCEAN TRACERS > THORIUM-234
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > RADIONUCLIDES > THORIUM-234
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > STABLE ISOTOPES > THORIUM-234
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > TRACE ELEMENTS
Theme_Keyword: SHIPS
Theme_Keyword: GAMMA RAY SPECTROMETERS
Theme_Keyword: PARTICLE SPECTROMETERS
Theme_Keyword: SPECTROMETERS
Theme_Keyword: IGBP > INTERNATIONAL GEOSPHERE-BIOSPHERE PROGRAMME
Theme_Keyword: JGOFS > JOINT GLOBAL OCEAN FLUX STUDY, IGBP
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: Biogeochemical Cycling
Theme_Keyword: Carbon Cycling
Theme_Keyword: Carbon Flux
Theme_Keyword: Eqpac
Theme_Keyword: Idn_node Gsfc/whoi
Theme_Keyword: Isotope
Theme_Keyword: Isotope Geochemistry
Theme_Keyword: Jgofs
Theme_Keyword: Marine Geochemistry
Theme_Keyword: Particle Flux
Theme_Keyword: Radioisotope
Theme_Keyword: Thorium
Theme_Keyword: Thorium-234
Theme_Keyword: ENVIRONMENT
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: INLAND WATERS
Theme_Keyword: OCEANS
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > PACIFIC OCEAN
Place_Keyword: GEOGRAPHIC REGION > EQUATORIAL
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: J. KIRK COCHRAN
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: SUNY Stony Brook
Address: Marine Science Research Center
City: Stony Brook
State_or_Province: NY
Postal_Code: 11794
Country: USA
Contact_Voice_Telephone: 516 632-8733
Back to Top
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
Back to Top
Spatial_Reference_Information:
Back to Top
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: JGOFS/US_JGOFS > United States Joint Global Ocean Flux Study
Contact_Person: CINDY CHANDLER
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: WHOI
City: Woods Hole
Country: USA
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: BCO-DMO > Biological and Chemical Oceanography Data Management Office
Contact_Person: ROBERT C. GROMAN
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Woods Hole Oceanographic Institution
Address: Swift House MS#38
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1127
Country: USA
Contact_Voice_Telephone: 508-289-2409
Contact_Facsimile_Telephone: 508-457-2169
Contact_Electronic_Mail_Address: rgroman@whoi.edu
Resource_Description: eqpac/tt008/thor
Resource_Description: eqpac/tt012/thor
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://usjgofs.whoi.edu/
Access_Instructions:
DATA CENTER URL
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.bco-dmo.org
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://usjgofs.whoi.edu/jg/dir/jgofs/
Access_Instructions:
Access US JGOFS data
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://usjgofs.whoi.edu/
Access_Instructions:
US JGOFS Home Page
Fees: Not Available
Back to Top
Metadata_Reference_Information:
Metadata_Date:
Metadata_Review_Date: 20160127
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
Back to Top
[ Update this Record ]


Link to Web Site