A simulation study of effects of GRACE orbit decay on the gravity field recovery
-
- Yamamoto Keiko
- Department of Geophysics, Graduate School of Science, Kyoto University
-
- Otsubo Toshimichi
- National Institute of Information and Communications Technology
-
- Kubo-oka Toshihiro
- National Institute of Information and Communications Technology
-
- Fukuda Yoichi
- Department of Geophysics, Graduate School of Science, Kyoto University
書誌事項
- タイトル別名
-
- simulation study of effects of GRACE orbit decay on the gravity field recovery
この論文をさがす
抄録
The effects of satellite ground track changes of GRACE on monthly gravity field recoveries are investigated. In the case of a gravity field recovery using a relatively short period of a month or so, the variation of ground tracks affects the precision of the gravity field solutions. It is a serious problem when the solutions are employed for detecting temporal gravity changes which are almost at their detection limits. In this study, the recoveries of four-weekly gravity fields are simulated and the relation between the recovery precision and the ground track is investigated. The result shows that the GRACE ground track of the year 2003 was in good condition for four-week gravity field recovery, but it will sometimes appear as worse cases as the orbit altitude decays. In those cases, the global standard deviations of geoid height errors will be about one order worse than the best case. From our simulation, ground tracks of around altitudes of 473, 448, 399, 350 and 337 km give insufficient spatial resolutions, even for gravity field recovery up to degree 30.
収録刊行物
-
- Earth, Planets and Space
-
Earth, Planets and Space 57 (4), 291-295, 2005
地球電磁気・地球惑星圏学会 、公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390001206513856640
-
- NII論文ID
- 10017468408
- 130003956495
-
- NII書誌ID
- AA11211921
-
- ISSN
- 18805981
- 13438832
- http://id.crossref.org/issn/13438832
-
- NDL書誌ID
- 7310862
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
-
- 抄録ライセンスフラグ
- 使用不可