Details
| Original language | English |
|---|---|
| Title of host publication | Dynamic Planet |
| Subtitle of host publication | Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools - lAG Symposium |
| Pages | 461-466 |
| Number of pages | 6 |
| ISBN (electronic) | 9783540493501 |
| Publication status | Published - 2007 |
| Event | IAG Symposium on Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools - Cairns, QLD, Australia Duration: 22 Aug 2005 → 26 Aug 2005 |
Publication series
| Name | International Association of Geodesy Symposia |
|---|---|
| Volume | 130 |
| ISSN (Print) | 0939-9585 |
Abstract
Temporal variations of the atmospheric density distribution induce changes in the gravitational air mass attraction at a specific observation site. Additionally, the load of the atmospheric masses deforms the Earth's crust and the sea surface. Variations in the local gravity acceleration and atmospheric pressure are known to be correlated with an admittance of about -3 nms-2 per hPa as an average factor, which is in accordance with the IAG Resolution No. 9, 1983. A more accurate correlation factor for a gravity station is varying with time and depends on the total global mass distribution of the atmosphere. For the absolute gravimetric observations of the Fennoscandian land uplift, the atmospheric attraction effect of the local zone has been calculated with 3D atmospheric data describing different pressure levels up to a height of 50 km. To model the regional and global attraction and deformation components with Green's functions method, 2D surface atmospheric data have been used. The improved atmospheric effects have been computed for the position-dependent absolute gravity observations in Fennoscandia performed by the Institut für Erdmessung (IfE) in 2003. The objective is to ensure an air mass reduction within ±3 nms-2 accuracy. For the 2003 campaigns, the use of atmospheric actual data has improved the reductions by about 9 nms-2 (max. 14 nms-2).
Keywords
- 3D atmospheric data, Absolute gravimetry, Air pressure reductions, Atmospheric attraction and deformation, Green's functions
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Computers in Earth Sciences
- Earth and Planetary Sciences(all)
- Geophysics
Cite this
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Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools - lAG Symposium. 2007. p. 461-466 (International Association of Geodesy Symposia; Vol. 130).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Atmospheric mass flow reduction for terrestrial absolute gravimetry in the fennoscandian land uplift network
AU - Gitlein, O.
AU - Timmen, L.
PY - 2007
Y1 - 2007
N2 - Temporal variations of the atmospheric density distribution induce changes in the gravitational air mass attraction at a specific observation site. Additionally, the load of the atmospheric masses deforms the Earth's crust and the sea surface. Variations in the local gravity acceleration and atmospheric pressure are known to be correlated with an admittance of about -3 nms-2 per hPa as an average factor, which is in accordance with the IAG Resolution No. 9, 1983. A more accurate correlation factor for a gravity station is varying with time and depends on the total global mass distribution of the atmosphere. For the absolute gravimetric observations of the Fennoscandian land uplift, the atmospheric attraction effect of the local zone has been calculated with 3D atmospheric data describing different pressure levels up to a height of 50 km. To model the regional and global attraction and deformation components with Green's functions method, 2D surface atmospheric data have been used. The improved atmospheric effects have been computed for the position-dependent absolute gravity observations in Fennoscandia performed by the Institut für Erdmessung (IfE) in 2003. The objective is to ensure an air mass reduction within ±3 nms-2 accuracy. For the 2003 campaigns, the use of atmospheric actual data has improved the reductions by about 9 nms-2 (max. 14 nms-2).
AB - Temporal variations of the atmospheric density distribution induce changes in the gravitational air mass attraction at a specific observation site. Additionally, the load of the atmospheric masses deforms the Earth's crust and the sea surface. Variations in the local gravity acceleration and atmospheric pressure are known to be correlated with an admittance of about -3 nms-2 per hPa as an average factor, which is in accordance with the IAG Resolution No. 9, 1983. A more accurate correlation factor for a gravity station is varying with time and depends on the total global mass distribution of the atmosphere. For the absolute gravimetric observations of the Fennoscandian land uplift, the atmospheric attraction effect of the local zone has been calculated with 3D atmospheric data describing different pressure levels up to a height of 50 km. To model the regional and global attraction and deformation components with Green's functions method, 2D surface atmospheric data have been used. The improved atmospheric effects have been computed for the position-dependent absolute gravity observations in Fennoscandia performed by the Institut für Erdmessung (IfE) in 2003. The objective is to ensure an air mass reduction within ±3 nms-2 accuracy. For the 2003 campaigns, the use of atmospheric actual data has improved the reductions by about 9 nms-2 (max. 14 nms-2).
KW - 3D atmospheric data
KW - Absolute gravimetry
KW - Air pressure reductions
KW - Atmospheric attraction and deformation
KW - Green's functions
UR - http://www.scopus.com/inward/record.url?scp=37249072026&partnerID=8YFLogxK
U2 - 10.1007/978-3-540-49350-1_67
DO - 10.1007/978-3-540-49350-1_67
M3 - Conference contribution
AN - SCOPUS:37249072026
SN - 9783540493495
T3 - International Association of Geodesy Symposia
SP - 461
EP - 466
BT - Dynamic Planet
T2 - IAG Symposium on Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools
Y2 - 22 August 2005 through 26 August 2005
ER -