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Core Angular Momentum Change Data: Excess length of day in milliseconds over standard day of 86400 seconds - Boggs data

Entry ID: IERS_GGFC_SBC_CAM_LOD_BOGGS

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Summary

Abstract: [Adapted from http://www.astro.oma.be/SBC/data5.htm]

Core angular momentum (CAM) is estimated by Boggs 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.

Modelling hypotheses :
The zonal toroidal t_1^0 and t_3^0 components of ...

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.

Data Set Citation

Dataset Originator/Creator: Dale Boggs

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/data5.htm

Parent DIF

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

Temporal Coverage

Start Date: 1840-01-01

Stop Date: 1990-12-31

Location Keywords

SOLID EARTH > CORE

Data Resolution

Temporal Resolution: 2.5 years

Science Keywords

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

ISO Topic Category

GEOSCIENTIFIC INFORMATION

Project

SBC > Special Bureau for the Core, GGFC, IERS

Access Constraints No constraints

Use Constraints Please cite data provider.

References to be mentioned when data are used :
R. Hide, D. H. Boggs and J. O. Dickey, "Angular Momentum fluctuations
within the Earth's liquid core and torsional oscillations of the
core-mantle system", Geophys. J. Int. 143, 777-786, 2000.

Ancillary Keywords

CORE

ANGULAR MOMENTUM

Data Set Progress

COMPLETE

Originating Center

Data Center

Global Geophysical Fluids Center, International Earth Rotation Service

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

DALE BOGGS

Role: INVESTIGATOR

Contact Address:

Jet Propulsion Laboratory Caltech

City: Pasadena

Province or State: California

Country: USA

Publications/References

References to be mentioned when data are used :
R. Hide, D. H. Boggs and J. O. Dickey, "Angular Momentum fluctuations
within the Earth's liquid core and torsional oscillations of the
core-mantle system", Geophys. J. Int. 143, 777-786, 2000.

Creation and Review Dates

DIF Creation Date: 2003-10-17

Last DIF Revision Date: 2003-10-17

Future DIF Review Date: 2004-10-16

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