Details
| Original language | English |
|---|---|
| Title of host publication | Earth Observation with CHAMP |
| Subtitle of host publication | Results from Three Years in Orbit |
| Pages | 59-64 |
| Number of pages | 6 |
| Publication status | Published - 2005 |
Abstract
The new CHAMP and GRACE global gravity field models provide a significantly improved long wavelength gravity spectrum. These satellite-only models are therefore a good basis for studying long wavelength errors of the terrestrial gravity data, as they can be considered as a completely independent source of information. In this contribution, the models from the CHAMP and GRACE mission as well as EGM96 are used for the evaluation of a terrestrial gravity data set for Europe. The differences are examined both geographically and spectrally. Different techniques are applied for the evaluation, including spherical harmonic expansions, degree variances and the multiresolution analysis based on spherical wavelets. All techniques confirm the existence of small long wavelength errors in the terrestrial gravity data. The reason for such errors may be various, e.g., lacking or poor quality gravity data in some regions, or effects of datum inconsistencies.
Keywords
- degree variances, gravity anomaly errors, multiresolution analysis, spherical harmonics
ASJC Scopus subject areas
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Earth Observation with CHAMP: Results from Three Years in Orbit. 2005. p. 59-64.
Research output: Chapter in book/report/conference proceeding › Contribution to book/anthology › Research › peer review
}
TY - CHAP
T1 - Evaluation of Terrestrial Gravity Data by Independent Global Gravity Field Models
AU - Roland, Markus
AU - Denker, Heiner
N1 - Copyright: Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2005
Y1 - 2005
N2 - The new CHAMP and GRACE global gravity field models provide a significantly improved long wavelength gravity spectrum. These satellite-only models are therefore a good basis for studying long wavelength errors of the terrestrial gravity data, as they can be considered as a completely independent source of information. In this contribution, the models from the CHAMP and GRACE mission as well as EGM96 are used for the evaluation of a terrestrial gravity data set for Europe. The differences are examined both geographically and spectrally. Different techniques are applied for the evaluation, including spherical harmonic expansions, degree variances and the multiresolution analysis based on spherical wavelets. All techniques confirm the existence of small long wavelength errors in the terrestrial gravity data. The reason for such errors may be various, e.g., lacking or poor quality gravity data in some regions, or effects of datum inconsistencies.
AB - The new CHAMP and GRACE global gravity field models provide a significantly improved long wavelength gravity spectrum. These satellite-only models are therefore a good basis for studying long wavelength errors of the terrestrial gravity data, as they can be considered as a completely independent source of information. In this contribution, the models from the CHAMP and GRACE mission as well as EGM96 are used for the evaluation of a terrestrial gravity data set for Europe. The differences are examined both geographically and spectrally. Different techniques are applied for the evaluation, including spherical harmonic expansions, degree variances and the multiresolution analysis based on spherical wavelets. All techniques confirm the existence of small long wavelength errors in the terrestrial gravity data. The reason for such errors may be various, e.g., lacking or poor quality gravity data in some regions, or effects of datum inconsistencies.
KW - degree variances
KW - gravity anomaly errors
KW - multiresolution analysis
KW - spherical harmonics
UR - http://www.scopus.com/inward/record.url?scp=84895384185&partnerID=8YFLogxK
U2 - 10.1007/3-540-26800-6_9
DO - 10.1007/3-540-26800-6_9
M3 - Contribution to book/anthology
AN - SCOPUS:84895384185
SN - 9783540228042
SP - 59
EP - 64
BT - Earth Observation with CHAMP
ER -