Core Angular Momentum Change Data: Excess length of day in milliseconds over standard day of 86400 seconds - Jault et al. data
Entry ID: IERS_GGFC_SBC_CAM_LOD_JAULT

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Summary
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"

Related URL
Link: GET DATA
Description: Excess length of day in milliseconds over standard day of 86400
seconds data in ASCII format


Link: VIEW PROJECT HOME PAGE
Description: IERS GGFC Special Bureau for the Core home page.


Parent DIF
This data set description is a member of a collection. The collection is described in
IERS_GGFC_SBC_CAM_LOD


Data Set Citation
Dataset Originator/Creator: Dominique Jault et al.
Dataset Title: Data of Core Angular Momentum Changes
Dataset Publisher: Special Bureau for the Core, GGFC, IERS
Data Presentation Form: Table
Online Resource: http://www.astro.oma.be/SBC/data3.html


Temporal Coverage
Start Date: 1969-01-01
Stop Date: 1987-12-31


Location Keywords
SOLID EARTH > CORE


Science Keywords
SOLID EARTH >GRAVITY/GRAVITATIONAL FIELD >ROTATIONAL MOTION/VARIATIONS    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION


Project
SBC >Special Bureau for the Core, GGFC, IERS    [Information]


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.


Keywords
CORE
ANGULAR MOMENTUM
ROTATION
LOD
LEGNTH OF DAY
IERS


Data Set Progress
COMPLETE


Originating Center


Data Center
Global Geophysical Fluids Center, International Earth Rotation Service    [Information]
Data Center URL: http://bowie.gsfc.nasa.gov/ggfc/

Data Center Personnel
Name: BENJAMIN F. CHAO
Email: chao at bowie.gsfc.nasa.gov
Contact Address:
Space Geodesy Branch, Code 926
NASA's Goddard Space Flight Center (GSFC)
City: Greenbelt
Province or State: Maryland
Postal Code: 20771
Country: USA



Distribution
Distribution_Media: Online (HTTP)
Distribution_Format: ASCII
Fees: None


Personnel
GENE R. MAJOR
Role: DIF AUTHOR
Email: gsfc-gcmduso at mail.nasa.gov


DOMINIQUE JAULT
Role: INVESTIGATOR
Contact Address:
Laboratoire de Geophysique Interne et de Tectonophysique
BP 53
Grenoble Cedex 9
Postal Code: 38041
Country: FRANCE


Publications/References
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.

Creation and Review Dates
DIF Creation Date: 2003-10-16
Last DIF Revision Date: 2003-10-17
Future DIF Review Date: 2004-10-16

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