Science Keywords>OCEANS>OCEAN CIRCULATION>WATER MASSES

Study of tracer distribution in the Drake Passage

Federal Geographic Data Committee (FGDC) Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Study of tracer distribution in the Drake Passage
Description:
Abstract:
In English: R/V Hesperides occupied the World Ocean Circulation Experiment SR1b repeat section across the Scotia Sea in February 1995, February 1996, and February 1998. On each cruise the same set of 21 hydrographic stations with characteristic spacing <20 nautical miles was visited. The results of the three surveys display a characteristic zonation of water masses in the region, which is defined by four hydrographic fronts. The net geostrophic transport of the Antarctic Circumpolar Current (ACC) across SR1b, computed with reference to the deepest common depth of each pair of adjacent stations, is similar in all three cruises, 144 Sv in February 1995, 131 Sv in February 1996, and 134 Sv in February 1998, and compares well with earlier computations of the ACC transport across Drake Passage. A close comparison of the vertical distributions of water properties on SR1b reveals changes in the structure of the ACC that are linked to undersampled current mesoscale activity, as suggested by infrared satellite images contemporary to the cruises. The most remarkable features are several hydrographic discontinuities observed in the Antarctic Zone south of the Southern ACC Front (SACCF), which are believed to be signatures of eddies produced east of the Shackleton Fracture Zone. The paper further addresses the different contribution of each ACC zonal band to the net geostrophic transport across SR1b on each Hesperides occupation.
Purpose:
Not Available
Supplemental_Information:
Not Available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19980113
Ending_Date: 19980218
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -58.0
East_Bounding_Coordinate: -41.0
North_Bounding_Coordinate: -54.0
South_Bounding_Coordinate: -62.0
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_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OCEAN TRACERS
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PIGMENTS
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > EDDIES
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS > SVERDRUP TRANSPORT
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > WATER MASSES
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL
Theme_Keyword: SHIPS
Theme_Keyword: CTD > CONDUCTIVITY, TEMPERATURE, DEPTH
Theme_Keyword: NISKIN BOTTLES
Theme_Keyword: AUTOANALYZER
Theme_Keyword: PHOTOMETERS
Theme_Keyword: FLUOROMETERS
Theme_Keyword: WOCE > WORLD OCEAN CIRCULATION EXPERIMENT
Theme_Keyword: Antarctic Circumpolar Current
Theme_Keyword: Nutrients
Theme_Keyword: Tracer
Theme_Keyword: Woce
Theme_Keyword: Phytoplankton
Theme_Keyword: Water Masses
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: OCEANS
Theme_Keyword: SPANISH
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA > ANTARCTIC PENINSULA
Place_Keyword: CONTINENT > ANTARCTICA > SCOTIA SEA
Place_Keyword: CONTINENT > ANTARCTICA > DRAKE PASSAGE
Place_Keyword: CONTINENT > ANTARCTICA > ANTARCTIC CIRCUMPOLAR CURRENT (ACC)
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: ANTONIO CRUZADO ALORDA
Contact_Position: INVESTIGATOR
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Centro de Estudios Avanzados de Blanes (CEAB)
Address: c/Acces a la Cala St. Francesc, 14
City: BLANES
State_or_Province: GERONA
Postal_Code: 17300
Country: SPAIN
Contact_Voice_Telephone: +34972336101
Contact_Facsimile_Telephone: +34972337806
Contact_Electronic_Mail_Address: cruzado@ceab.csic.es
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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
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ES/CPE/CNDA > Centro Nacional de Datos Antarticos, National Antarctic Data Centre, Comite Polar Espanol, Spain
Contact_Person: ANTONIO BARRAGAN SANABRIA
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Centro Nacional de Datos Antarticos
Address: Instituto Geologico y Minero de Espana
Address: c/Rios Rosas 23
City: Madrid
Postal_Code: 28003
Country: SPAIN
Contact_Voice_Telephone: +34913495731
Contact_Facsimile_Telephone: +34913495929
Contact_Electronic_Mail_Address: a.barragan@igme.es
Resource_Description: CNDA-ESP_ANT95-1718-E
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII;BINARY
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://hielo.igme.es/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.agu.org/pubs/crossref/2002.../2000JC000...
Access_Instructions:
Observed variability of water properties and transports on the World Ocean Circulation Experiment SR1b section across the Antarctic Circumpolar Current, Journal of Geophysical Research (Article can be accessed on-line through AGU)
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20050517
Metadata_Review_Date: 20050517
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: OSCAR BERMUDEZ MOLINA
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Centro Nacional de Datos Antarticos
Address: Instituto Geologico y Minero de Espana
Address: C/ Rios Rosas 23
City: Madrid
Postal_Code: E-28003
Country: SPAIN
Contact_Voice_Telephone: +34913495889
Contact_Facsimile_Telephone: +34913495929
Contact_Electronic_Mail_Address: o.bermudez@igme.es
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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