1. Lay, T. et al. Depth-varying rupture properties of subduction zone megathrust faults. J. Geophys. Res. 117, B04311 (2012).

2. Lay, T. & Bilek, S. L. in The Seismogenic Zone of Subduction Thrust Faults (eds. Dixon, T. & Moore, C.) 476–511 (Columbia Univ. Press, 2007).

3. Bilek, S. L. & Lay, T. Subduction zone megathrust earthquakes. Geosphere 14, 1468–1500 (2018).

4. Tobin, H. J. & Saffer, D. M. Elevated fluid pressure and extreme mechanical weakness of a plate boundary thrust, Nankai Trough subduction zone. Geology 37, 679–682 (2009).

5. Noda, H. & Lapusta, N. Stable creeping fault segments can become destructive as a result of dynamic weakening. Nature 493, 518–521 (2013).

6. Huang, Y., Meng, L. & Ampuero, J.-P. A dynamic model of the frequency-dependent rupture process of the 2011 Tohoku-Oki earthquake. Earth Planets Space 64, 1061–1066 (2012).

7. Ikari, M. J., Kameda, J., Saffer, D. M. & Kopf, A. J. Strength characteristics of Japan Trench borehole samples in the high-slip region of the 2011 Tohoku-oki earthquake. Earth Planet. Sci. Lett. 412, 35–41 (2015).

8. Scholz, C. Earthquakes and friction laws. Nature 391, 37–42 (1998).

9. Fujiwara, T. et al. The 2011 Tohoku-Oki earthquake: displacement reaching the trench axis. Science 334, 1240 (2011).

10. Maksymowicz, A. et al. Coseismic seafloor deformation in the trench region during the M w 8.8 Maule megathrust earthquake. Sci. Rep. 7, 45918 (2017).

11. Kanamori, H. Mechanism of tsunami earthquakes. Phys. Earth Planet. Inter. 6, 346–359 (1972).

12. Kanamori, H. & Kikuchi, M. The 1992 Nicaragua earthquake: a slow tsunami earthquake associated with subducted sediments. Nature 361, 714–716 (1993).

13. Polet, J. & Kanamori, H. Shallow subduction zone earthquakes and their tsunamigenic potential. Geophys. J. Int. 142, 684–702 (2000).

14. Satake, K. & Tanioka, Y. Sources of tsunami and tsunamigenic earthquakes in subduction zones. Pure Appl. Geophys. 154, 467–483 (1999).

15. Geist, E. L. & Bilek, S. L. Effect of depth-dependent shear modulus on tsunami generation along subduction zones. Geophys. Res. Lett. 28, 1315–1318 (2001).

16. Bilek, S. L. & Lay, T. Rigidity variations with depth along interplate megathrust faults in subduction zones. Nature 400, 443–446 (1999).

17. von Huene, R., Klaeschen, D., Cropp, B. & Miller, J. Tectonic structure across the accretionary and erosional parts of the Japan Trench margin. J. Geophys. Res. 99, 22, 349–22,361 (1994).

18. Ranero, C. R. & von Huene, R. Subduction erosion along the Middle America convergent margin. Nature 404, 748–752 (2000).

19. Brocher, T. M. Empirical relations between elastic wavespeeds and density in the Earth’s crust. Bull. Seismol. Soc. Am. 95, 2081–2092 (2005).

20. Allmann, B. P. & Shearer, P. M. Global variations of stress drop for moderate to large earthquakes. J. Geophys. Res. 114, B01310 (2009).

21. Bilek, S. L. & Lay, T. Tsunami earthquakes possibly widespread manifestations of frictional conditional stability. Geophys. Res. Lett. 29, 18-1–18-4 (2002).

22. Pelayo, A. M. & Wiens, D. A. Tsunami earthquakes; slow thrust-faulting events in the accretionary wedge. J. Geophys. Res. 97, 15321–15337 (1992).

23. Newman, A. V., Hayes, G., Wei, Y. & Convers, J. The 25 October 2010 Mentawai tsunami earthquake, from real-time discriminants, finite-fault rupture, and tsunami excitation. Geophys. Res. Lett. 38, L05302 (2011).

24. Sun, T., Wang, K., Fujiwara, T., Kodaira, S. & He, J. Large fault slip peaking at trench in the 2011 Tohoku-Oki earthquake. Nat. Commun. 8, 14044 (2017).

25. Hirono, T. et al. Near-trench slip potential of megaquakes evaluated from fault properties and conditions. Sci. Rep. 6, 28184 (2016).

26. Okal, E. A. & Newman, A. V. Tsunami earthquakes: the quest for a regional signal. Phys. Earth Planet. Inter. 124, 45–70 (2001).

27. Abercrombie, R. E., Antolik, M., Felzer, K. & Ekström, G. The 1994 Java tsunami earthquake: slip over a subducting seamount. J. Geophys. Res. 106, 6595–6607 (2001).

28. Murphy, S. et al. Shallow slip amplification and enhanced tsunami hazard unravelled by dynamic simulations of mega-thrust earthquakes. Sci. Rep. 6, 35007 (2016).

29. Bilek, S. L. Using earthquake source durations along the Sumatra-Andaman subduction system to examine fault-zone variations. Bull. Seismol. Soc. Am. 97, S62–S70 (2007).

30. Bilek, S. L., DeShon, H. R. & Engdahl, E. R. Spatial variations in earthquake source characteristics within the 2011 M w = 9.0 Tohoku, Japan rupture zone. Geophys. Res. Lett. 39, L09304 (2012).

31. Wang, D. & Mori, J. Frequency-dependent energy radiation and fault coupling for the 2010 M w 8.8 Maule, Chile, and 2011 M w 9.0 Tohoku, Japan, earthquakes. Geophys. Res. Lett. 38, L22308 (2011).

32. Koper, K. D., Hutko, A. R., Lay, T. & Sufri, O. Imaging short-period seismic radiation from the 27 February 2010 Chile (M W 8.8) earthquake by back-projection of P, PP, and PKIKP waves. J. Geophys. Res. 117, B02308 (2012).

33. Melgar, D. et al. Slip segmentation and slow rupture to the trench during the 2015, M w 8.3 Illapel, Chile earthquake. Geophys. Res. Lett. 43, 961–966 (2016).

34. Zelt, C. A. & Smith, R. B. Seismic travel time inversion for 2-D crustal velocity structure. Geophys. J. Int. 108, 16–34 (1992).

35. Van Avendonk, H. J. A., Harding, A. J., Orcutt, J. A. & McClain, J. S. A two-dimensional tomographic study of the Clipperton transform fault. J. Geophys. Res. 103, 17885–17899 (1998).

36. Korenaga, J. et al. Crustal structure of the southeast Greenland margin from joint refraction and reflection seismic tomography. J. Geophys. Res. 105, 21591–21614 (2000).

37. Hobro, J. W. D., Singh, S. C. & Minshull, T. A. Three-dimensional tomographic inversion of combined reflection and refraction seismic traveltime data. Geophys. J. Int. 152, 79–93 (2003).

38. Contreras-Reyes, E., Grevemeyer, I., Flueh, E. R. & Reichert, C. Upper lithospheric structure of the subduction zone offshore of southern Arauco peninsula, Chile, at 38° S. J. Geophys. Res. 113, B07303 (2008).

39. Contreras-Reyes, E. et al. Structure and tectonics of the central Chilean margin (31°–33° S): implications for subduction erosion and shallow crustal seismicity. Geophys. J. Int. 203, 776–791 (2015).

40. Sallarès, V. & Ranero, C. R. Structure and tectonics of the erosional convergent margin off Antofagasta, north Chile (23.30° S). J. Geophys. Res. 110, B06101 (2005).

41. Sallarès, V. et al. Overriding plate structure of the Nicaragua convergent margin: relationship to the seismogenic zone of the 1992 tsunami earthquake. Geochem. Geophys. Geosyst. 14, 3436–3461 (2013).

42. Svetlizky, I. & Fineberg, J. Classical shear cracks drive the onset of dry frictional motion. Nat. Phys. 509, 205–208 (2014).

43. Freund, L. B. Dynamic Fracture Mechanics (Cambridge Univ. Press, 1998).

44. Ambraseys, N. N. & Douglas, J. Near-field horizontal and vertical earthquake ground motions. Soil. Dyn. Earthquake Eng. 23, 1–18 (2003).

45. Atkinson, G. M. & Boore, D. M. Empirical ground-motion relations for subduction-zone earthquakes and their application to Cascadia and other regions. Bull. Seismol. Soc. Am. 93, 1703–1729 (2003).

46. Wessel, P., Smith, W. H. F., Scharroo, R., Luis, J. & Wobbe, F. Generic Mapping Tools: improved version released. Eos 94, 409–410 (2013).

47. IOC. IHO and BODC, Centenary Edition of the GEBCO Digital Atlas. https://www.gebco.net/data_and_products/gridded_bathymetry_data (2003).

48. Martinez-Loriente, S. et al. Influence of incoming plate relief on upper plate structure and on earthquake nucleation: the case of Southern Costa Rica. Tectonics (in the press).

49. Agudelo, W., Ribodetti, A., Collot, J.-Y. & Operto, S. Joint inversion of multichannel seismic reflection and wide-angle seismic data: Improved imaging and refined velocity model of the crustal structure of the north Ecuador–south Colombia convergent margin. J. Geophys. Res. 114, B02306 (2009).

50. Contreras-Reyes, E., Becerra, J., Kopp, H., Reichert, C. & Díaz-Naveas, J. Seismic structure of the north-central Chilean convergent margin: Subduction erosion of a paleomagmatic arc. Geophys. Res. Lett. 41, 1523–1529 (2014).

51. Moscoso, E. et al. Revealing the deep structure and rupture plane of the 2010 Maule, Chile earthquake (M w = 8.8) using wide angle seismic data. Earth Planet. Sci. Lett. 307, 147–155 (2011).

52. Scherwath, M. et al. Deep lithospheric structures along the southern central Chile margin from wide-angle P-wave modelling. Geophys. J. Int. 179, 579–600 (2009).

53. Contreras-Reyes, E. et al. Deep seismic structure of the Tonga subduction zone: implications for mantle hydration, tectonic erosion, and arc magmatism. J. Geophys. Res. 116, B10103 (2011).

54. Klingelhoefer, F. et al. Limits of the seismogenic zone in the epicentral region of the 26 December 2004 great Sumatra-Andaman earthquake: Results from seismic refraction and wide-angle reflection surveys and thermal modeling. J. Geophys. Res. 115, B01304 (2010).

55. Arai, R. et al. Structure of the tsunamigenic plate boundary and low-frequency earthquakes in the southern Ryukyu Trench. Nat. Commun. 7, 12255 (2016).

56. Kodaira, S., Takahashi, N., Nakanishi, A., Miura, S. & Kaneda, Y. Subducted seamount imaged in the rupture zone of the 1946 Nankaido earthquake. Science 289, 104–106 (2000).

57. Nakamura, Y. et al. Seismic imaging and velocity structure around the JFAST drill site in the Japan Trench: low Vp, high Vp/Vs in the transparent frontal prism. Earth Planets Space 66, 121 (2014).

58. Horning, G. et al. 2-D tomographic model of the Juan de Fuca plate from accretion at axial seamount to subduction at the Cascadia margin from an active source ocean bottom seismometer survey. J. Geophys. Res. 121, 5859–5879 (2016).

59. Krabbenhöft, A., Bialas, J., Kopp, H., Kukowski, N. & Hübscher, C. Crustal structure of the Peruvian continental margin from wide-angle seismic studies. Geophys. J. Int. 159, 749–764 (2004).

60. Hampel, A., Kukowski, N., Bialas, J., Huebscher, C. & Heinbockel, R. Ridge subduction at an erosive margin: the collision zone of the Nazca Ridge in southern Peru. J. Geophys. Res. 109, B02101 (2004).

61. Shulgin, A. et al. Structural architecture of oceanic plateau subduction offshore Eastern Java and the potential implications for geohazards. Geophys. J. Int. 184, 12–28 (2011).

62. Bassett, D. et al. Three dimensional velocity structure of the northern Hikurangi margin, Raukumara, New Zealand: implications for the growth of continental crust by subduction erosion and tectonic underplating. Geochem. Geophys. Geosyst. 11, Q10013 (2010).

63. Miura, S. et al. Seismological structure and implications of collision between the Ontong Java Plateau and Solomon Island Arc from ocean bottom seismometer-airgun data. Tectonophysics 389, 191–220 (2004).

64. Takahashi, N., Suyehiro, K. & Shinohara, M. Implications from the seismic crustal structure of the northern Izu–Bonin arc. Isl. Arc 7, 383–394 (1998).

65. Walther, C. H. E., Flueh, E. R., Ranero, C. R., von Huene, R. & Strauch, W. Crustal structure across the Pacific margin of Nicaragua: evidence for ophiolitic basement and a shallow mantle sliver. Geophys. J. Int. 141, 759–777 (2000).

66. Sallarès, V., Dañobeitia, J. J. & Flueh, E. Lithospheric structure of the Costa Rican Isthmus: effects of subduction zone magmatism on an oceanic plateau. J. Geophys. Res. 106, 621–643 (2001).

67. Bassett, D. et al. Crustal structure of the Kermadec arc from MANGO seismic refraction profiles. J. Geophys. Res. 121, 7514–7546 (2016).

68. Klingelhoefer, F. et al. P-wave velocity structure of the southern Ryukyu margin east of Taiwan: results from the ACTS wide-angle seismic experiment. Tectonophysics 578, 50–62 (2012).

69. Kopp, H., Klaeschen, D., Flueh, E. R., Bialas, J. & Reichert, C. Crustal structure of the Java margin from seismic wide-angle and multichannel reflection data. J. Geophys. Res. 107, ETG 1-1–ETG 1-24 (2002).

70. Planert, L. et al. Lower plate structure and upper plate deformational segmentation at the Sunda–Banda arc transition, Indonesia. J. Geophys. Res. 115, B08107 (2010).

71. Ye, S., Flueh, E. R., Klaeschen, D. & von Huene, R. Crustal structure along the EDGE transect beneath the Kodiak shelf off Alaska derived from OBH seismic refraction data. Geophys. J. Int. 130, 283–302 (1997).

72. Nakanishi, A. et al. Crustal evolution of the southwestern Kuril Arc, Hokkaido Japan, deduced from seismic velocity and geochemical structure. Tectonophysics 472, 105–123 (2009).

73. Nakanishi, A. et al. Crustal structure across the coseismic rupture zone of the 1944 Tonankai earthquake, the central Nankai Trough seismogenic zone. J. Geophys. Res. 107, EPM 2-1–EPM 2-21 (2002).

74. Kodaira, S. et al. Western Nankai Trough seismogenic zone: results from a wide-angle ocean bottom seismic survey. J. Geophys. Res. 105, 5887–5905 (2000).

75. Singh, S. C. et al. Seismic evidence of bending and unbending of subducting oceanic crust and the presence of mantle megathrust in the 2004 Great Sumatra earthquake rupture zone. Earth Planet. Sci. Lett. 321–322, 166–176 (2012).

76. Kopp, H. et al. Deep structure of the central Lesser Antilles Island Arc: relevance for the formation of continental crust. Earth Planet. Sci. Lett. 304, 121–134 (2011).

77. Zhu, J. et al. Crustal structure of the central Costa Rica subduction zone: implications for basal erosion from seismic wide-angle data. Geophys. J. Int. 178, 1112–1131 (2009).

78. Begovic, S., Ranero, C. R., Sallarès, V. & Grevemeyer, I. 2D velocity and interplate geometry model of the North Chile margin from joint refraction and wide-angle reflection travel time inversion. In Subduction Interface Processes (SIP) Int. Conf. (2017).

79. Graindorge, D., Calahorrano, A., Charvis, P., Collot, J.-Y. & Bethoux, N. Deep structures of the Ecuador convergent margin and the Carnegie Ridge, possible consequence on great earthquakes recurrence interval. Geophys. Res. Lett. 31, L04603 (2004).

80. Gailler, A., Charvis, P. & Flueh, E. R. Segmentation of the Nazca and South American plates along the Ecuador subduction zone from wide angle seismic profiles. Earth Planet. Sci. Lett. 260, 444–464 (2007).

81. Krabbenhoeft, A., von Huene, R., Klaeschen, D. & Miller, J. J. Subduction-related structure in the M w 9.2, 1964 megathrust rupture area offshore Kodiak Island, Alaska. In AGU Fall Meet. https://ui.adsabs.harvard.edu/abs/2016AGUFM.T11D2641K/abstract (2016).

82. Miura, S. et al. Structural characteristics off Miyagi forearc region, the Japan Trench seismogenic zone, deduced from wide-angle reflection and refraction study. Tectonophysics 407, 165–188 (2005).

83. Nishizawa, A. et al. Variations in seismic velocity distribution along the Ryukyu (Nansei-Shoto) Trench subduction zone at the northwestern end of the Philippine Sea plate. Earth Planets Space https://doi.org/10.1186/s40623-017-0674-7 (2017).

84. Barrientos, S. E. & Ward, S. N. The 1960 Chile earthquake: inversion for slip distribution from surface deformation. Geophys. J. Int. 103, 589–598 (1990).

85. Kanamori, H. The Alaska Earthquake of 1964: radiation of long-period surface waves and source mechanism. J. Geophys. Res. 75, 5029–5040 (1970).

86. Lay, T. et al. The great Sumatra–Andaman earthquake of 26 December 2004. Science 308, 1127–1133 (2005).

87. Koketsu, K. et al. A unified source model for the 2011 Tohoku earthquake. Earth Planet. Sci. Lett. 310, 480–487 (2011).

88. Delouis, B., Nocquet, J.-M. & Vallée, M. Slip distribution of the February 27, 2010 M w = 8.8 Maule Earthquake, central Chile, from static and high-rate GPS, InSAR, and broadband teleseismic data. Geophys. Res. Lett. 37, L17305 (2010).

89. Wu, F. T. & Kanamori, H. Source mechanism of February 4, 1965, Rat Island earthquake. J. Geophys. Res. 78, 6082–6092 (1973).

90. Ihmlé, P. F., Gómez, J.-M., Heinrich, Ph. & Guibourg, S. The 1996 Peru tsunamigenic earthquake: broadband source process. Geophys. Res. Lett. 25, 2691–2694 (1998).

91. Bell, R., Holden, C., Power, W., Wang, X. & Downes, G. Hikurangi margin tsunami earthquake generated by slow seismic rupture over a subducted seamount. Earth Planet. Sci. Lett. 397, 1–9 (2014).

92. Newman, A. V. et al. The energetic 2010 M w 7.1 Solomon Island tsunami earthquake. Geophys. J. Int. 186, 775–781 (2011).

93. Ammon, C. J., Kanamori, H., Lay, T. & Velasco, A. A. The 17 July 2006 Java tsunami earthquake. Geophys. Res. Lett. 33, L24308 (2006).

94. Tanioka, T. & Satake, K. Fault parameters of the 1896 Sanriku tsunami earthquake estimated from tsunami numerical modeling. Geophys. Res. Lett. 23, 1549–1552 (1996).