HR: 0800h
AN: G31B-0793    [Abstracts]
TI: Atmospheric Loading Blue-Sky Effects on SLR Station Coordinates
AU: * Otsubo, T
EM: otsubo@nict.go.jp
AF: National Institute of Information and Communications Technology, 893-1 Hirai, Kashima, 314-8501 Japan
AU: Kubo-oka, T
EM: tkubooka@nict.go.jp
AF: National Institute of Information and Communications Technology, 893-1 Hirai, Kashima, 314-8501 Japan
AU: Gotoh, T
EM: tara@nict.go.jp
AF: National Institute of Information and Communications Technology, 893-1 Hirai, Kashima, 314-8501 Japan
AU: Ichikawa, R
EM: richi@nict.go.jp
AF: National Institute of Information and Communications Technology, 893-1 Hirai, Kashima, 314-8501 Japan
AB: Satellite laser ranging (SLR) station coordinates are found to be dependent on local atmospheric pressure through a precise 5-year orbit analysis of LAGEOS-I and LAGEOS-II satellites. The loading coefficients of the station heights are estimated to be mostly around -0.3 to -0.5 mm/hPa. This result indicates that the site displacement due to the atmospheric pressure loading effect is detected for the first time by the SLR technique. Furthermore, due to its weather restriction, a -0.4 to -1.3 mm offset is theoretically predicted in the height of SLR stations when it is compared to all-weather microwave-based geodetic techniques like GPS and VLBI.
DE: 1223 Ocean/Earth/atmosphere interactions (3339)
DE: 1241 Satellite orbits
DE: 1247 Terrestrial reference systems
SC: Geodesy [G]
MN: 2004 AGU Fall Meeting