C. J. Ammon, C. Ji, H. K. Thio, D. Robinson, S. Ni et al., Rupture Process of the 2004 Sumatra-Andaman Earthquake, Science, vol.308, issue.5725, pp.1133-1139, 2005.
DOI : 10.1126/science.1112260

E. Araki, M. Shinohara, K. Obana, T. Yamada, Y. Kaneda et al., Aftershock distribution of the 26 December 2004 Sumatra-Andaman earthquake from ocean bottom seismographic observation, Earth, Planets and Space, vol.79, issue.47, pp.113-119, 2004.
DOI : 10.1186/BF03353367

F. Avedik, V. Renard, J. P. Allenou, and B. Morvan, Single bubble" air­gun array for deep exploration, 1993.

K. Berglar, C. Gaedicke, R. Lutz, D. Franke, and Y. S. Djajadihardja, Neogene subsidence and stratigraphy of the Simeulue forearc basin, Northwest Sumatra, Marine Geology, vol.253, issue.1-2, 2008.
DOI : 10.1016/j.margeo.2008.04.006

D. E. Byrne, D. M. Davis, and L. R. Sykes, Loci and maximum size of thrust earthquakes and the mechanics of the shallow region of subduction zones, Tectonics, vol.13, issue.4, 1988.
DOI : 10.1029/TC007i004p00833

T. Byrne and D. Fisher, Evidence for a weak and overpressured d??collement beneath sediment-dominated accretionary prisms, Journal of Geophysical Research, vol.300, issue.B6, pp.9081-9097, 1990.
DOI : 10.1029/JB095iB06p09081

R. L. Carlson and C. N. Herrick, Densities and porosities in the oceanic crust and their variations with depth and age, Journal of Geophysical Research, vol.102, issue.53, pp.95-9153, 1990.
DOI : 10.1029/JB095iB06p09153

N. I. Christensen and W. D. Mooney, Seismic velocity structure and composition of the continental crust: A global view, Journal of Geophysical Research: Solid Earth, vol.64, issue.585, pp.9761-9788, 1995.
DOI : 10.1029/95JB00259

A. P. Chauhan, S. C. Singh, N. D. Hananto, H. Carton, F. Klingelhoefer et al., and the Sumatra­OBS scientific team, submitted to Geophys, Role of the forearc backthrusting in generation of the massive tsunami of 26 December 2004 offshore Northern Sumatra, p.24

N. I. Christensen and W. D. Mooney, Seismic velocity structure and composition of the continental crust: A global view, Journal of Geophysical Research: Solid Earth, vol.64, issue.585, pp.9761-9788, 1995.
DOI : 10.1029/95JB00259

J. K. Cohen and J. W. Stockwell, Seismic Unix Release 37: a free package for seismic research and processing, 2003.

J. R. Curray, G. G. Shor, R. W. Raitt, and M. Henry, Seismic refraction and relection studies of the crustal structure of the Eastern Sunda and Western Banda Arcs, J. Geophys. Res, issue.17, pp.82-2479, 1977.

C. A. Currie, R. D. Hyndman, K. Wang, and V. Kostoglodov, Thermal models of the Mexico subduction zone: Implications for the megathrust seismogenic zone, Journal of Geophysical Research: Solid Earth, vol.90, issue.47, 2002.
DOI : 10.1029/2001JB001227

C. A. Currie and R. D. Hyndman, The thermal structure of subduction zone back arcs, Journal of Geophysical Research, vol.90, issue.4, pp.10-1029, 2006.
DOI : 10.1029/2005JB004024

D. Davis, J. Suppe, and F. Dahlen, Mechanics of fold-and-thrust belts and accretionary wedges, Journal of Geophysical Research, vol.69, issue.B2, pp.1153-1172, 1983.
DOI : 10.1029/JB088iB02p01153

G. Delisle and M. Zeibig, Marine Heat Flow Measurements in Hard Ground Offshore Sumatra, Eos, Transactions American Geophysical Union, vol.88, issue.4, pp.38-39, 2007.
DOI : 10.1029/2007EO040004

J. X. Dessa, S. Operto, S. Kodaira, A. Nakanishi, G. Pascal et al., Deep seismic imaging of the eastern Nankai trough, Japan, from multifold Ocean Bottom Seismometer data by combined traveltime tomography and prestack depth migration, J. Geophys. Res, vol.109, pp.10-129, 2004.

J. ­. Dessa, F. Klingelhoefer, D. Graindorge, C. André, H. Permana et al., and the SUMATRA­OBS scientific team, Megathrust earthquakes can nucleate in the fore­arc mantle: Evidence from the, Sumatra event Geology, p.37, 2004.

E. R. Engdahl, R. D. Van-der-hilst, and R. Buland, Global teleseismic earthquake relocation with improved travel times and procedures for depth relocation, 1998.

D. Franke, M. Schnabel, S. Ladage, D. R. Tappin, S. Neben et al., The great Sumatra???Andaman earthquakes ??? Imaging the boundary between the ruptures of the great 2004 and 2005 earthquakes, Earth and Planetary Science Letters, vol.269, issue.1-2, pp.118-130, 2004.
DOI : 10.1016/j.epsl.2008.01.047

Y. Fuji and K. Satake, Tsunami source of ther 2004 Sumatra­Andaman earthquake and the Indian Ocean tsunami, Bull. Seism. Soc. Am, vol.97, 2007.

A. Gailler, P. Charvis, and E. Flueh, Segmentation of the Nazca and South American plates along the Ecuador subduction zone from wide angle seismic profiles, Earth and Planetary Science Letters, vol.260, issue.3-4, pp.260-444, 2007.
DOI : 10.1016/j.epsl.2007.05.045
URL : https://hal.archives-ouvertes.fr/ird-00194762

D. Graindorge, F. Klingelhoefer, J. ­. Sibuet, L. Mcneill, T. Henstock et al., Impact of lower plate structure on upper plate deformation at the NW Sumatran convergent margin from seafloor morphology, Earth and Planetary Science Letters, vol.275, issue.3-4, pp.3-4, 2008.
DOI : 10.1016/j.epsl.2008.04.053
URL : https://hal.archives-ouvertes.fr/insu-00354708

I. Grevemeyer, N. Kaul, J. L. Diaz­naveas, H. W. Villinger, C. R. Ranero et al., Heat flow and bending-related faulting at subduction trenches: Case studies offshore of Nicaragua and Central Chile, Earth and Planetary Science Letters, vol.236, issue.1-2, pp.238-248, 2005.
DOI : 10.1016/j.epsl.2005.04.048

I. Grevemeyer, C. R. Ranero, E. R. Flueh, D. Kläschen, and J. Bialas, Passive and active seismological study of bending­related faulting and mantle serpentinization at the 26, 2007.

M. ­. Gutscher and S. M. Peacock, Thermal models of flat subduction and the rupture zone of great subduction earthquakes, Journal of Geophysical Research: Solid Earth, vol.105, issue.B1, pp.10-1029, 2003.
DOI : 10.1029/2001JB000787

T. Henstock, L. Mcneill, and D. R. Tappin, Seafloor morphology of the Sumatran subduction zone: Surface rupture during megathrust earthquakes?, Geology, vol.34, issue.6, pp.34-485, 2006.
DOI : 10.1130/22426.1

E. L. Hamilton, Sound velocity???density relations in sea???floor sediments and rocks, The Journal of the Acoustical Society of America, vol.63, issue.2, pp.366-377, 1978.
DOI : 10.1121/1.381747

R. N. Harris and K. Wang, Thermal models of the Middle America Trench at the Nicoya Peninsula, Costa Rica, Geophysical Research Letters, vol.15, issue.47, p.1029, 2002.
DOI : 10.1029/2002GL015406

. Hasegawa, Aftershock distribution of the 1994 Sanriku­oki earthquake (Mw 7.7) revealed by ocean bottom seismographic observation, J. Geophys. Res, vol.105, 2000.

S. Hippchen and R. D. Hyndman, Thermal and structural models of the Sumatra subduction zone: Implications for the megathrust seismogenic zone, Journal of Geophysical Research, vol.108, issue.B1, pp.10-1029, 2008.
DOI : 10.1029/2008JB005698

M. L. Hubbert and W. W. Rubey, ROLE OF FLUID PRESSURE IN MECHANICS OF OVERTHRUST FAULTING, Geological Society of America Bulletin, vol.70, issue.2, pp.115-206, 1959.
DOI : 10.1130/0016-7606(1959)70[115:ROFPIM]2.0.CO;2

S. Hughes, P. J. Barton, and D. Harrison, Exploration in the Shetland­Faeroe Basin using densely spaced arrays of ocean­bottom seismometer, Geophys, vol.63, issue.2, pp.328-334, 1998.

R. D. Hyndman, The seismogenic zone of subduction thrust faults; what we know and don't know The seismogenic zone of subduction thrust faults. MARGINS theoretical and experimental earth science series, 2007.

R. D. Hyndman and K. Wang, Thermal constraints on the zone of major thrust earthquake failure: The Cascadia Subduction Zone, Journal of Geophysical Research: Solid Earth, vol.90, issue.2, 1993.
DOI : 10.1029/92JB02279

R. D. Hyndman and K. Wang, The rupture zone of Cascadia great earthquakes from current deformation and the thermal regime, Journal of Geophysical Research: Solid Earth, vol.7, issue.12, pp.22133-22154, 1995.
DOI : 10.1029/95JB01970

R. D. Hyndman, M. Yamano, and K. Wang, Thermal constraints on the seismogenic portion of the southwestern Japan subduction thrust, Journal of Geophysical Research: Solid Earth, vol.66, issue.B8, pp.15373-15392, 1995.
DOI : 10.1029/95JB00153

R. D. Hyndman, M. Yamano, and D. A. Oleskevich, The seismogenic zone of subduction thrust faults, The Island Arc, vol.109, issue.3, pp.244-260, 1997.
DOI : 10.1029/95JB00516

A. Izart, M. Kemal, B. Malod, and J. A. , Seismic stratigraphy and subsidence evolution of the northwest Sumatra fore-arc basin, Marine Geology, vol.122, issue.1-2, pp.109-124, 1994.
DOI : 10.1016/0025-3227(94)90207-0

H. R. Jackson, I. Reid, and R. K. Falconer, Crustal structure near the Arctic Mid-Ocean Ridge, Crustal structure near the Arctic mid­ocean ridge, pp.1773-1783, 1982.
DOI : 10.1029/JB087iB03p01773

J. M. Johnson, K. Satake, S. R. Holdahl, and J. Sauber, The 1964 Prince William Sound earthquake: Joint inversion of tsunami and geodetic data, Journal of Geophysical Research: Solid Earth, vol.70, issue.593, pp.14965-14991, 1996.
DOI : 10.1029/95JB02806

W. Jokat and M. Schmidth­aursch, Geophysical characteristics of the ultraslow spreading Gakkel Ridge, Arctic Ocean, Geophysical Journal International, vol.168, issue.3, pp.983-998, 2007.
DOI : 10.1111/j.1365-246X.2006.03278.x

H. Kanamori, Tectonic implications of the 1944 Tonankai and the 1946 Nankaido earthquakes, Physics of the Earth and Planetary Interiors, vol.5, pp.129-139, 1972.
DOI : 10.1016/0031-9201(72)90082-9

D. E. Karig, M. B. Lawrence, G. F. Moore, and J. R. Curray, Structural framework of the fore­arc basin, NW Sumatra, J. Geol. Soc. London, pp.137-77, 1980.

G. Khazaradze, A. Qamar, and H. Dragert, Tectonic deformation in western Washington from continuous GPS measurements, Geophysical Research Letters, vol.76, issue.20, pp.3153-3156, 1999.
DOI : 10.1029/1999GL010458

E. M. Klein and C. H. Langmuir, Global correlations of ocean ridge basalt chemistry with axial depth and crustal thickness, Journal of Geophysical Research, vol.14, issue.53, pp.92-8089, 1987.
DOI : 10.1029/JB092iB08p08089

H. Kopp, D. Klaeschen, E. R. Flueh, and J. Bialas, Crustal structure of the Java margin from seismic wide-angle and multichannel reflection data, Journal of Geophysical Research, vol.79, issue.45, pp.2034-2044, 1029.
DOI : 10.1029/2000JB000095

H. Kopp, E. R. Flueh, D. Klaeschen, J. Bialas, and C. Reichert, Crustal structure of the central Sunda margin at the onset of oblique subduction, Geophysical Journal International, vol.147, issue.2, pp.449-474, 2001.
DOI : 10.1046/j.0956-540x.2001.01547.x

S. Ladage, C. Gaedicke, and Y. Djajadihardja, Great Sumatran earthquakes: MCS images and bathymetry offshore Sumatra ­ first results of SEACAUSE2 Leg1 cruise SO186, Proc. EGU Meeting, p.6774, 2006.

T. Lay, H. Kanamori, C. J. Ammon, M. Nettles, S. N. Ward et al., The Great Sumatra-Andaman Earthquake of 26 December 2004, Science, vol.308, issue.5725, pp.1127-1133, 2004.
DOI : 10.1126/science.1112250

J. ­. Malod and B. M. Kemal, The Sumatra margin: oblique subduction and lateral displacement of the accretionary prism, Geological Society, London, Special Publications, vol.106, issue.1, 1996.
DOI : 10.1144/GSL.SP.1996.106.01.03

C. Marone and D. M. Saffer, Fault friction and the upper transition from seismic to aseismic faulting The seismogenic zone of subduction thrust faults. MARGINS theoretical and experimental earth science series, 2007.

J. C. Moore and T. H. Shipley, Abnormal fluid pressures and fault-zone dilation in the Barbados accretionary prism: Evidence from logging while drilling, Geology, vol.23, issue.7, pp.605-608, 1995.
DOI : 10.1130/0091-7613(1995)023<0605:AFPAFZ>2.3.CO;2

J. C. Moore and D. Saffer, Updip limit of the seismogenic zone beneath the accretionary prism of southwest Japan: An effect of diagenetic to low-grade metamorphic processes and increasing effective stress, Geology, vol.29, issue.2, pp.29-183, 2001.
DOI : 10.1130/0091-7613(2001)029<0183:ULOTSZ>2.0.CO;2

D. Mueller, W. R. Roest, J. ­. Royer, L. M. Gahagan, and J. G. Sclater, Digital isochrons of the world's ocean floor, Journal of Geophysical Research: Solid Earth, vol.86, issue.44, pp.3211-3214, 1997.
DOI : 10.1029/96JB01781

M. R. Muller, C. J. Robinson, T. A. Minshull, R. S. White, and M. J. Bickle, Thin crust beneath ocean drilling program borehole 735B at the Southwest Indian Ridge?, Earth and Planetary Science Letters, vol.148, issue.1-2, pp.295-317, 1997.
DOI : 10.1016/S0012-821X(97)00030-7

D. A. Oleskevich, R. D. Hyndman, and K. Wang, The updip and downdip limits to great subduction earthquakes: Thermal and structural models of Cascadia, south Alaska, SW Japan, and Chile, Journal of Geophysical Research: Solid Earth, vol.100, issue.96, pp.14965-14991, 1999.
DOI : 10.1029/1999JB900060

J. F. Pacheco, L. R. Sykes, and C. H. Scholz, Nature of seismic coupling along simple plate boundaries of the subduction type, Journal of Geophysical Research: Solid Earth, vol.17, issue.B8, pp.14133-14159, 1993.
DOI : 10.1029/93JB00349

S. M. Peacock and K. Wang, Seismic consequences of warm versus cool subduction zone metamorphism: Examples from northeast and southwest Japan, Science, pp.286-937, 1999.

K. Ramachandran, R. D. Hynman, and T. M. Brocher, Regional P wave velocity structure of the Northern Cascadia Subduction zone, J. Geophys. Res, vol.111, pp.10-1029, 2006.

C. R. Ranero, J. Phipps-morgan, K. Mcintosh, and C. Reichert, bending­related faulting and mantle serpentinization at the Middle America Trench, Nature, pp.425-367, 2003.

J. ­. Royer and D. T. Sandwell, Evolution of the eastern Indian Ocean since the Late Cretaceous: Constraints from Geosat altimetry, Journal of Geophysical Research: Solid Earth, vol.132, issue.11, pp.755-13782, 1989.
DOI : 10.1029/JB094iB10p13755

L. Ruff and H. Kanamori, Seismicity and the subduction process, Physics of the Earth and Planetary Interiors, vol.23, issue.3, pp.240-252, 1980.
DOI : 10.1016/0031-9201(80)90117-X

D. M. Saffer and B. A. Bekins, Hydrological controls on the morphology and mechanics of accretionary wedges, Geology, vol.29, pp.183-186, 2002.

V. Sallares, R. , and C. R. , Structure and tectonics of the erosional convergent margin off Antofagasta, north Chile (23??30???S), Journal of Geophysical Research, vol.106, issue.B2, pp.10-1029, 2005.
DOI : 10.1029/2004JB003418
URL : https://hal.archives-ouvertes.fr/hal-00407465

D. Sandwell and W. Smith, Marine gravity from satellite altimetry, digital file, version 7, Geol. Data Cent., Scripps Inst. of Oceanogr, issue.2, 1995.

K. Satake, Depth distribution of coseismic slip along the Nankai Trough, Japan, from joint inversion of geodetic and tsunami data, Journal of Geophysical Research: Solid Earth, vol.78, issue.B3, pp.4553-4565, 1993.
DOI : 10.1029/92JB01553

K. Satake, K. Shimazaki, Y. Tsuji, and K. Ueda, Time and size of a giant earthquake in Cascadia inferred from Japanese tsunami records of, Nature, pp.379-246, 1700.

J. C. Savage, A dislocation model of strain accumulation and release at a subduction zone, Journal of Geophysical Research: Solid Earth, vol.88, issue.B6, pp.4984-4996, 1983.
DOI : 10.1029/JB088iB06p04984

C. H. Scholz, The Mechanics of Earthquakes and Faulting, 439 pp, 1990.

T. Seno, Variation of downdip limit of the seismogenic zone near the Japanese islands: implications for the serpentinization mechanism of the forearc mantle wedge, Earth and Planetary Science Letters, vol.231, issue.3-4, pp.249-262, 2005.
DOI : 10.1016/j.epsl.2004.12.027

J. ­. Sibuet, Aftershocks cruise report, publication of the, 2005.

J. ­. Sibuet, C. Rangin, X. Le-pichon, S. Singh, A. Cattaneo et al., 26th December 2004 great Sumatra???Andaman earthquake: Co-seismic and post-seismic motions in northern Sumatra, Earth and Planetary Science Letters, vol.263, issue.1-2, pp.88-103, 2004.
DOI : 10.1016/j.epsl.2007.09.005
URL : https://hal.archives-ouvertes.fr/insu-00204272

M. Simoes, J. P. Avouac, R. Cattin, H. , and P. , The Sumatra subduction zone: A case for a locked fault zone extending into the mantle, Journal of Geophysical Research: Solid Earth, vol.90, issue.B1, pp.10-1029, 2004.
DOI : 10.1029/2001JB001227

S. C. Singh, H. Carton, P. Tapponnier, N. D. Hananto, A. P. Chauhan et al., Seismic evidence for broken oceanic crust??in the 2004 Sumatra earthquake epicentral??region, Nature Geoscience, vol.410, issue.11, pp.777-781, 2008.
DOI : 10.1038/nature05199

D. Stanley and A. Villasenor, Models of downdip frictional coupling for the Cascadia Megathrust, Geophysical Research Letters, vol.98, issue.B9, pp.1551-1554, 2000.
DOI : 10.1029/1999GL005441

S. Stein and E. A. Okal, Speed and size of the Sumatra earthquake, Nature, pp.434-581, 2005.

C. A. Stein and S. Stein, A model for the global variation in oceanic depth and heat flow with lithospheric age, Nature, vol.359, issue.6391, pp.123-126, 1992.
DOI : 10.1038/359123a0

J. W. Stockwell, The CWP, Seismic Unix Package, Computers and Geosciences, pp.415-419, 1999.

B. W. Tichelaar and L. J. Ruff, Depth of seismic coupling along subduction zones, Journal of Geophysical Research: Solid Earth, vol.90, issue.2, 1993.
DOI : 10.1029/92JB02045

K. L. Wang, R. D. Hyndman, and M. , Thermal regime of the Southwest Japan subduction zone: effects of age history of the subducting plate, Tectonophysics, vol.248, issue.1-2, pp.53-69, 1995.
DOI : 10.1016/0040-1951(95)00028-L

K. Wang and J. He, Effects of Frictional Behavior and Geometry of Subduction Fault on Coseismic Seafloor Deformation, Bulletin of the Seismological Society of America, vol.98, issue.2, pp.10-1785, 2008.
DOI : 10.1785/0120070097

D. L. Wells and K. J. Coppersmith, New empirical relationships among magnitude, rupture length, rupture width, rupture area, and surface displacement, Bull. Seismol, 1994.

P. Wessel and W. H. Smith, New version of the generic mapping tools, Eos, Transactions American Geophysical Union, vol.72, issue.33, p.329, 1995.
DOI : 10.1029/95EO00198

R. S. White, D. Mckenzie, O. Nions, and R. , Oceanic crustal thickness from seismic measurements and rare earth element inversions, Journal of Geophysical Research, vol.13, issue.10, pp.683-19715, 1992.
DOI : 10.1029/92JB01749

P. Vrolijk, On the mechanical role of smectite in subduction zones, Geology, vol.18, issue.8, pp.18-703, 1990.
DOI : 10.1130/0091-7613(1990)018<0703:OTMROS>2.3.CO;2

C. A. Zelt and P. J. Barton, Three-dimensional seismic refraction tomography: A comparison of two methods applied to data from the Faeroe Basin, Journal of Geophysical Research: Solid Earth, vol.108, issue.B4, pp.7187-7210, 1998.
DOI : 10.1029/97JB03536

C. A. Zelt and R. B. Smith, Seismic traveltime inversion for 2-D crustal velocity structure, Geophysical Journal International, vol.108, issue.1, pp.16-31, 1992.
DOI : 10.1111/j.1365-246X.1992.tb00836.x

C. A. Zelt, Modelling strategies and model assessment for wide­angle seismic traveltime data, Geophys, J. Int, vol.139, pp.183-204, 1999.