Regional gravity decrease after the 2010 Maule (Chile) earthquake indicates large-scale mass redistribution

Geophysical Research Letters

Volumn 37, Issue 23, 2010, Pages

  Han, Shin Chan ^a,b   Sauber, Jeanne ^a   Luthcke, Scott ^a  

^a NASA GODDARD SPACE FLIGHT CENTER   (United States)

^b UNIVERSITY OF MARYLAND BALTIMORE COUNTY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

DEFORMATION; EARTHQUAKES; GEODETIC SATELLITES;

EARTH'S INTERIOR; FILLING IN; GEODETIC MEASUREMENTS; GRAVITY ANOMALIES; GRAVITY CHANGES; GRAVITY FIELD; GREAT EARTHQUAKE; LONG WAVELENGTH; MASS REDISTRIBUTION; SCALE GRAVITY; SEISMIC DATAS; SPATIAL SCALE; SURFACE SUBSIDENCE;

GRAVITATION;

COSEISMIC PROCESS; DATA SET; DEFORMATION; DILATION; EARTHQUAKE EPICENTER; EARTHQUAKE EVENT; EARTHQUAKE MAGNITUDE; GEODESY; GRACE; GRAVITY ANOMALY; GRAVITY FIELD; NUMERICAL MODEL; SEISMIC DATA; SUBSIDENCE; UPLIFT;

EID: 78650147800     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2010GL045449     Document Type: Article

References (13)

1. Case, K., G. Kruizinga, and S.-C. Wu (2010), GRACE level 1B data product user handbook, JPL Publ., D-22027.
2. Chen, J., C. Wilson, B. Tapley, D. Blankenship, and E. Ivins (2007), Patagonia Icefield melting observed by Gravity Recovery and Climate Experiment (GRACE), Geophys. Res. Lett., 34, L22501, doi:10.1029/ 2007GL031871.
3. De Linage, C., et al. (2009), Separation of coseismic and postseismic gravity changes for the 2004 Sumatra-Andaman earthquake from 4.6 yr of GRACE observations and modelling of the coseismic change by normal-modes summation, Geophys. J. Int., 176, 695-714, doi:10.1111/j.1365-246X.2008.04025.x.
4. Han, S.-C, C. K. Shum, M. Bevis, C. Ji, and C. Kuo (2006), Crustal dilatation observed by GRACE After the 2004 Sumatra-Andaman earthquake, Science, 313, 658-662, doi:10.1126/science.1128661. (Pubitemid 44201141)
5. Han, S.-C, J. Sauber, S. Luthcke, C. Ji, and F. Pollitz (2008), Implications of postseismic gravity change following the great 2004 Sumatra- Andaman earthquake from the regional harmonic analysis of GRACE intersatellite tracking data, J. Geophys. Res., 113, B11413, doi:10.1029/2008JB005705.
6. Lay, T., C. J. Ammon, H. Kanamori, K. D. Koper, O. Sufri, and A. R. Hutko (2010), Teleseismic inversion for rupture process of the 27 February 2010 Chile(Mw 8.8) earthquake, Geophys. Res. Lett, 37, L13301, doi:10.1029/ 2010GL043379.
7. Ogawa, R., and K. Heki (2007), Slow postseismic recovery of geoid depression formed by the 2004 Sumatra-Andaman Earthquake by mantle water diffusion, Geophys. Res. Lett., 34, L06313, doi:10.1029/2007GL029340. (Pubitemid 46865303)
8. Okubo, S. (1992), Gravity and potential changes due to shear and tensile faults in a half-space, J. Geophys. Res., 97, 7137-7144, doi:10.1029/92JB00178.
9. Panet, I., et al. (2007), Coseismic and post-seismic signatures of the Sumatra 2004 December and 2005 March earthquakes in GRACE satellite gravity, Geophys. J. Int., 171, 177-190, doi:10.1111/j.1365-246X.2007.03525.x. (Pubitemid 47566484)
10. Pollitz, F. (1996), Coseismic deformation from earthquake faulting on a layered spherical Earth, Geophys. J. Int., 125, 1-14, doi:10.1111/j.1365-246X. 1996.tb06530.x.
11. Pollitz, F. (1997), Gravity anomaly from faulting on a layered spherical Earth with application to central Japan, Phys. Earth Planet. Inter., 99, 259-271, doi:10.1016/S0031-9201(96)03204-9.
12. Rodell, M., et al. (2004), The Global Land Data Assimilation System, Bull. Am. Meteorol. Soc, 85, 381-394, doi:10.1175/BAMS-85-3-381.
13. Tapley, B., et al. (2005), GGM02-An improved Earth gravity field model from GRACE, J. Geod., 79, 467-478, doi:10.1007/s00190-005-0480-z. (Pubitemid 41801092)