 |
| Titel |
Determination of geocenter motion from SLR data |
| VerfasserIn |
V. Luceri, C. Sciarretta, G. Bianco |
| Konferenz |
EGU General Assembly 2012
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250069001
|
|
|
|
|
|
| Zusammenfassung |
| Mass redistribution on the Earth affects the position of its center of mass whose translations, relative to the International Terrestrial Reference Frame (ITRF), range from a few millimeters to centimeters. This translation is generally referred to as “geocenter motion” and can be estimated from the degree one unnormalized Stokes coefficients.
The most recent and updated ASI/CGS analyses of SLR data, spanning more than 25 years, from several geodetic satellites (Lageos I-II, Stella, Starlette, Ajisai, Etalon I-II) provide dynamic time series of monthly estimates of the first degree geopotential coefficients.
The dynamic time series will be compared with the geocenter offsets from a conventional origin as determined by the translations of the weekly ILRS coordinate time series w.r.t. to ITRF. The ILRS loose solutions, indeed, are determined in a satellite-based reference system whose origin is naturally located in the center of common mass (CM).
This work will show and discuss models, results, accuracies and spectral content. |
|
|
|
|
|
|