Data of Core Angular Momentum Changes

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: Dominique Jault et al.

Publication_Date: Unknown

Title: Data of Core Angular Momentum Changes

Edition:

Geospatial_Data_Presentation_Form: Table

Series_Information:

Series_Name:

Issue_Identification:

Publication_Information:

Publication_Place:

Publisher: Special Bureau for the Core, GGFC, IERS

Other_Citation_Details:

Online_Linkage: http://www.astro.oma.be/SBC/data3.html

Description:

Abstract:

Core angular momentum (CAM) is estimated by Jault et al. using modelling hypotheses applied to magnetic data. CAM is then transformed into change in the length of day (LOD). Data is expressed as excess length of day in milliseconds over a standard day of 86400 seconds. Details on modelling hypotheses and data used for model computations are available at the following URL: "http://www.astro.oma.be/SBC/data3.html"

Purpose:

Not Available

Supplemental_Information:

REFERENCE: Reference to be mentioned when data are used: Jault D., Gire C., and Le Mouel J.-L., 'Westward drift, core motions and exchanges of angular momentum between core and mantle', Nature, 333, 353-356, #1988.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19690101

Ending_Date: 19871231

Currentness_Reference:Unknown

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: Not Available

East_Bounding_Coordinate: Not Available

North_Bounding_Coordinate: Not Available

South_Bounding_Coordinate: Not Available

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 > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > ROTATIONAL MOTION/VARIATIONS

Theme_Keyword: SBC > SPECIAL BUREAU FOR THE CORE, GGFC, IERS

Theme_Keyword: Core

Theme_Keyword: Angular Momentum

Theme_Keyword: Rotation

Theme_Keyword: Lod

Theme_Keyword: Legnth Of Day

Theme_Keyword: Iers

Theme_Keyword: GEOSCIENTIFIC INFORMATION

Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD

Place_Keyword: SOLID EARTH > CORE

Access_Constraints: No constraints

Use_Constraints:

Please cite data provider. Reference to be mentioned when data are used: Jault D., Gire C., and Le Mouel J.-L., 'Westward drift, core motions and exchanges of angular momentum between core and mantle', Nature, 333, 353-356, #1988.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: DOMINIQUE JAULT

Contact_Position: INVESTIGATOR

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Laboratoire de Geophysique Interne et de Tectonophysique

Address: BP 53

Address: Grenoble Cedex 9

Postal_Code: 38041

Country: FRANCE

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: IERS/GGFC > Global Geophysical Fluids Center, International Earth Rotation Service

Contact_Person: BENJAMIN F. CHAO

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Space Geodesy Branch, Code 926

Address: NASA's Goddard Space Flight Center (GSFC)

City: Greenbelt

State_or_Province: Maryland

Postal_Code: 20771

Country: USA

Contact_Electronic_Mail_Address: chao@bowie.gsfc.nasa.gov

Resource_Description: IERS_GGFC_SBC_CAM_LOD_JAULT

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ASCII

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://bowie.gsfc.nasa.gov/ggfc/

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://www.astro.oma.be/SBC/jault_table.txt

Access_Instructions:

Excess length of day in milliseconds over standard day of 86400 seconds data in ASCII format

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://www.astro.oma.be/SBC/main.html

Access_Instructions:

IERS GGFC Special Bureau for the Core home page.

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20031016

Metadata_Review_Date: 20031017

Metadata_Future_Review_Date: 20041016

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: GENE R. MAJOR

Contact_Position: DIF AUTHOR

Contact_Address:

Address_Type: Mailing and Physical Address

Contact_Electronic_Mail_Address: gsfc-gcmduso@mail.nasa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time