Enhanced reflectivity of backthrusts in the recent great Sumatran earthquake rupture zones

Geophysical Research Letters

Volumn 38, Issue 4, 2011, Pages

  Singh, S C ^a   Hananto, N D ^a   Chauhan, A P S ^a  

^a INSTITUT DE PHYSIQUE DU GLOBE DE PARIS   (France)

Author keywords

[No Author keywords available]

Indexed keywords

EARTHQUAKE EFFECTS; SEISMIC WAVES; SEISMOLOGY;

BEFORE AND AFTER; DEEP SEISMIC REFLECTIONS; EARTHQUAKE PRECURSORS; EARTHQUAKE RUPTURE; FLUID CONTENT; FLUID MOVEMENT; FORE-ARC BASIN; GREAT EARTHQUAKE; MANTLE WEDGE; MEGATHRUST EARTHQUAKES; SEISMIC IMAGE; SUBDUCTION ZONES; SUMATRA;

REFLECTION;

EARTHQUAKE PRECURSOR; EARTHQUAKE RUPTURE; FOREARC BASIN; SEISMIC REFLECTION; SEISMIC SURVEY; SUBDUCTION ZONE; THRUST;

GREATER SUNDA ISLANDS; SUMATRA; SUNDA ISLES;

EID: 79951901320     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2010GL046227     Document Type: Article

References (26)

1. Bangs, N. L., G. L. Christenson, and T. H. Shipley (2003), Structure of the Lesser Antilles subduction zone backstop and its role in a large accre-tionary system, J. Geophys. Res., 108(B7), 2358, doi:10.1029/ 2002JB002040.
2. Briggs, R. W., et al. (2008), Deformation and slip along the Sunda Megathrust in the great 2005 Nias-Simeulue earthquake, Science, 311, 1897-1901.
3. Brown, K., and G. K. Westbrook (1988), Mud diapirism and subcretion in the Barbados ridge accretionary complex: The role of fluids in accretion-ary processes, Tectonics, 7, 613-640.
4. Chauhan, A. P. S. (2010), Structure of the northern Sumatra subduction megathrust using seismic reflection and refraction data, Ph.D. thesis, Institut de Physique du Globe de Paris, Paris.
5. Chauhan, A. P. S., et al. (2009), Seismic imaging of forearc backthrusts at northern Sumatra subduction zone, Geophys. J. Int., 179, 1772-1780.
6. Chlieh, M., et al. (2007), Coseismic slip and afterslip of the great Mw 9.15 (Pubitemid 46881341)
7. Chlieh, M., J.-P. Avouac, K. Sieh, D. H. Natawidjaja, and J. Galetzka (2008), Heterogeneous coupling of the Sumatran megathrust constrained by geodetic and paleogeodetic measurements, J. Geophys. Res., 113, B05305, doi:10.1029/2007JB004981.
8. Dessa, J.-X., et al. (2009), Megathrust earthquakes can nucleate in the forearc mantle: Evidence from the 2004 Sumatra event, Geology, 37, 659-662.
9. Fryer, P., K. L. Saboda, L. E. Johnson, M. E. MacKay, G. F. Moore, and P. Stoffers (1990), Conical seamount: Sea-MARC II, Alvin submersible, and seismic reflection studies, Proc. Ocean Drill. Program Initial Rep., 125, 5-14.
10. Fryer, P., J. P. Lockwood, N. Becker, S. Phipps, and C.S. Todd (2000), Significance of serpentine mud volcanism in convergent margins, in Ophiolites and Oceanic Crust, edited by Y. Dilek and E. Moore, Spec. Publ. Geol. Soc. Am., 349, 35-51.
11. Hulme, S. M., C. G. Wheat, P. Fryer, and M. J. Mottl (2010), Pore water chemistry of the Mariana serpentinite mud volcanoes: A window to the seismogenic zone, Geochem. Geophys. Geosyst., 11, Q01X09, doi:10.1029/2009GC002674.
12. Konca, A. O., et al. (2008), Partial rupture of a locked patch of the Sumatra megathrust during the 2007 earthquake sequence, Nature, 456, 631-635.
13. Kopf, A. J. (2002), Significance of mud volcanism, Rev. Geophys., 40(2), 1005, doi:10.1029/2000RG000093.
14. Maekawa, H., M. Shozui, T. Ishii, P. Fryer, and J. A. Pearce (1993), Blues-chist metamorphism in an active subduction zone, Nature, 364, 520-523, doi:10.1038/364520a0. (Pubitemid 24419413)
15. McCloskey, J., D. Lange, F. Tilmann, S. Nalbant, A. Bell, D. Natawidjaja, and A. Rietbrock (2010), The September 2009 Padang earthquake, Nat. Geosci., 3, 70-71.
16. Prawirodirdjo, L., and Y. Bock (2004), Instantaneous global plate motion model from 12 years of continuous GPS observations, J. Geophys. Res., 109, B08405, doi:10.1029/2003JB002944. (Pubitemid 39428449)
17. Samuel, M. A., and N. A. Harbury (1996), The Mentawai fault zone and deformation of the Sumatra foreac in Nias area, in Tectonic Evolution of Southeast Asia, edited by R. Hall and D. Blundell, Geol. Soc. Spec. Publ., 106, 337-351.
18. Sieh, K., et al. (2008), Earthquake supercycles inferred from sea-level changes recorded in the corals of West Sumatra, Science, 322, 1674-1678.
19. Singh, S. C., T. A. Minshull, and G. D. Spence (1993), Velocity structure of a gas hydrate reflector, Science, 260, 204-207. (Pubitemid 23391423)
20. Singh, S. C., et al. (1998), Melt to mush variations in crustal magma properties along the ridge crest at the southern East Pacific Rise, Nature, 394, 874-878. (Pubitemid 28410905)
21. Singh, S. C., et al. (2008), Seismic evidence for broken oceanic crust in the 2004 Sumatra earthquake epicentral region, Nat. Geosci., 1, 777-781.
22. Singh, S. C., S. Midenet, and Y. Djajadihardja (2009), Seismic survey of the locked and unlocked Sumatra subduction zone, Eos Trans. AGU, 90(49), 471-478.
23. Singh, S. C., N. Hananto, A. Chauhan, H. Permana, M. Denolle, A. Hendriyana, and D. Natawidjaja (2010), Evidence of active back-thrusting at the NE Margin of Mentawai Islands, SW Sumatra, Geophys. J. Int., 180, 703-714.
24. Subarya, C., M. Chlieh, L. Prawirodirdjo, J.-P. Avouac, Y. Bock, K. Sieh, A. Meltzner, D. Natawidjaja, and R. Caffrey (2006), Plate-boundary deformation associated with great Sumatra-Andaman earthquake, Nature, 440, 46-51. (Pubitemid 43336262)
25. Trehu, A., et al. (1994), Crustal architecture of the Cascadia forearc, Science, 266, 237-243. (Pubitemid 24343932)
26. Verschuur, D. J., A. J. Berkhout, and C. Wapenaar (1992), Adaptive surface-related multiple elimination, Geophysics, 57(9), 1166-1177. doi:10.1190/1.1443330. (Pubitemid 23385858)