Details
| Original language | English |
|---|---|
| Title of host publication | Observing our Changing Earth |
| Subtitle of host publication | Proceedings of the 2007 IAG General Assembly, Perugia, Italy, July 2 - 13, 2007 |
| Editors | Michael E. Sideris |
| Pages | 177-185 |
| Number of pages | 9 |
| Publication status | Published - 2009 |
| Event | 24th General Assembly of the International Union of Geodesy and Geophysics, IUGG 2007 - Perugia, Italy Duration: 2 Jul 2007 → 13 Jul 2007 |
Publication series
| Name | International Association of Geodesy Symposia |
|---|---|
| Volume | 133 |
| ISSN (Print) | 0939-9585 |
Abstract
The European Gravity and Geoid Project (EGGP) is a project within IAG Commission 2, reporting to Sub-commission 2.4. The main goal of the project is to compute an improved European geoid and quasigeoid model based on new and improved data sets which have become available since the last computation in 1997 (EGG97). The improvements include better global geopotential models from the CHAMP and GRACE missions, better digital elevation models (DEMs) in some regions (e.g., new national DEMs, SRTM3, GTOPO30), updated gravity data sets for selected areas, updated ship and altimetric gravity data, improved procedures for the merging of ship and altimetric data, the use of GPS/levelling data, as well as refined computation techniques This contribution describes the progress made during the 4-year term from 2003 to 2007, including the development of a new geoid and quasigeoid model EGG07 for entire Europe. First, the status of the gravity and terrain data sets as well as the development of the EGG07 model by the spectral combination approach is described. Then, the EGG07 and other models are evaluated by independent GPS and levelling data, showing that the use of GRACE geopotential models as well as upgraded gravity and terrain data leads to significant improvements compared to EGG97 (in total by 25 - 65%). The results indicate an accuracy potential of the EGG07 model in the order of 0.03 - 0.05 m at continental scales and 0.01 - 0.02 m over shorter distances up to a few 100 km, provided that high quality and resolution input data are available.
Keywords
- CHAMP, EGGP, Geoid, GPS/levelling, GRACE, Gravity field modelling, Quasigeoid
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Computers in Earth Sciences
- Earth and Planetary Sciences(all)
- Geophysics
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Observing our Changing Earth : Proceedings of the 2007 IAG General Assembly, Perugia, Italy, July 2 - 13, 2007. ed. / Michael E. Sideris. 2009. p. 177-185 (International Association of Geodesy Symposia; Vol. 133).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - The Development of the European Gravimetric Geoid Model EGG07
AU - Denker, H.
AU - Barriot, J. P.
AU - Barzaghi, R.
AU - Fairhead, D.
AU - Forsberg, R.
AU - Ihde, J.
AU - Kenyeres, A.
AU - Marti, U.
AU - Sarrailh, M.
AU - Tziavos, I. N.
N1 - Copyright: Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2009
Y1 - 2009
N2 - The European Gravity and Geoid Project (EGGP) is a project within IAG Commission 2, reporting to Sub-commission 2.4. The main goal of the project is to compute an improved European geoid and quasigeoid model based on new and improved data sets which have become available since the last computation in 1997 (EGG97). The improvements include better global geopotential models from the CHAMP and GRACE missions, better digital elevation models (DEMs) in some regions (e.g., new national DEMs, SRTM3, GTOPO30), updated gravity data sets for selected areas, updated ship and altimetric gravity data, improved procedures for the merging of ship and altimetric data, the use of GPS/levelling data, as well as refined computation techniques This contribution describes the progress made during the 4-year term from 2003 to 2007, including the development of a new geoid and quasigeoid model EGG07 for entire Europe. First, the status of the gravity and terrain data sets as well as the development of the EGG07 model by the spectral combination approach is described. Then, the EGG07 and other models are evaluated by independent GPS and levelling data, showing that the use of GRACE geopotential models as well as upgraded gravity and terrain data leads to significant improvements compared to EGG97 (in total by 25 - 65%). The results indicate an accuracy potential of the EGG07 model in the order of 0.03 - 0.05 m at continental scales and 0.01 - 0.02 m over shorter distances up to a few 100 km, provided that high quality and resolution input data are available.
AB - The European Gravity and Geoid Project (EGGP) is a project within IAG Commission 2, reporting to Sub-commission 2.4. The main goal of the project is to compute an improved European geoid and quasigeoid model based on new and improved data sets which have become available since the last computation in 1997 (EGG97). The improvements include better global geopotential models from the CHAMP and GRACE missions, better digital elevation models (DEMs) in some regions (e.g., new national DEMs, SRTM3, GTOPO30), updated gravity data sets for selected areas, updated ship and altimetric gravity data, improved procedures for the merging of ship and altimetric data, the use of GPS/levelling data, as well as refined computation techniques This contribution describes the progress made during the 4-year term from 2003 to 2007, including the development of a new geoid and quasigeoid model EGG07 for entire Europe. First, the status of the gravity and terrain data sets as well as the development of the EGG07 model by the spectral combination approach is described. Then, the EGG07 and other models are evaluated by independent GPS and levelling data, showing that the use of GRACE geopotential models as well as upgraded gravity and terrain data leads to significant improvements compared to EGG97 (in total by 25 - 65%). The results indicate an accuracy potential of the EGG07 model in the order of 0.03 - 0.05 m at continental scales and 0.01 - 0.02 m over shorter distances up to a few 100 km, provided that high quality and resolution input data are available.
KW - CHAMP
KW - EGGP
KW - Geoid
KW - GPS/levelling
KW - GRACE
KW - Gravity field modelling
KW - Quasigeoid
UR - http://www.scopus.com/inward/record.url?scp=77950104086&partnerID=8YFLogxK
U2 - 10.1007/978-3-540-85426-5_21
DO - 10.1007/978-3-540-85426-5_21
M3 - Conference contribution
AN - SCOPUS:77950104086
SN - 9783540854258
T3 - International Association of Geodesy Symposia
SP - 177
EP - 185
BT - Observing our Changing Earth
A2 - Sideris, Michael E.
T2 - 24th General Assembly of the International Union of Geodesy and Geophysics, IUGG 2007
Y2 - 2 July 2007 through 13 July 2007
ER -