DOI: 10.1002/2013GL059066
论文题名: High-resolution lunar gravity fields from the GRAIL Primary and Extended Missions
作者: Konopliv A.S. ; Park R.S. ; Yuan D.-N. ; Asmar S.W. ; Watkins M.M. ; Williams J.G. ; Fahnestock E. ; Kruizinga G. ; Paik M. ; Strekalov D. ; Harvey N. ; Smith D.E. ; Zuber M.T.
刊名: Geophysical Research Letters
ISSN: 0094-10279
EISSN: 1944-10010
出版年: 2014
卷: 41, 期: 5 起始页码: 1452
结束页码: 1458
语种: 英语
英文关键词: gravity
; spherical harmonics
Scopus关键词: Gravitation
; Spacecraft
; Gravity field
; Harmonic degree
; High resolution
; Least squares techniques
; Lower average
; Lunar gravity field
; Spherical harmonics
; Surface resolution
; Harmonic analysis
; accuracy assessment
; Bouguer anomaly
; GRAIL
; gravity field
; lunar crust
; satellite mission
; spacecraft
; spherical harmonics
; tracking
英文摘要: The resolution and accuracy of the lunar spherical harmonic gravity field have been dramatically improved as a result of the Gravity Recovery and Interior Laboratory (GRAIL) mission. From the Primary Mission, previous harmonic gravity fields resulted in an average n = 420 surface resolution and a Bouguer spectrum to n = 330. The GRAIL Extended Mission improves the resolution due to a lower average 23 km altitude orbit. As a result, new harmonic degree 900 gravity fields (GL0900C and GL0900D) show nearly a factor of 2 improvement with an average surface resolution n = 870 and the Bouguer spectrum extended to n = 550. Since the minimum spacecraft altitude varies spatially between 3 km and 23 km, the surface resolution is variable from near n = 680 for the central farside to near n = 900 for the polar regions. These gravity fields with 0.8 million parameters are by far the highest-degree fields of any planet ever estimated with a fully dynamic least squares technique using spacecraft tracking data. Key Points A degree 900 gravity field from the GRAIL Primary and Extended Mission The GRAIL Extended Mission doubles the resolution of the gravity field The Bouguer spectrum is well determined to near harmonic degree 550 ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84895914021&doi=10.1002%2f2013GL059066&partnerID=40&md5=1664ff9670249257deb55af9688627d7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7543
Appears in Collections: 气候减缓与适应
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作者单位: Jet Propulsion Laboratory, California Institute of Technology, Pasadena CA, United States
Recommended Citation:
Konopliv A.S.,Park R.S.,Yuan D.-N.,et al. High-resolution lunar gravity fields from the GRAIL Primary and Extended Missions[J]. Geophysical Research Letters,2014-01-01,41(5).