Kinematics of Crustal Deformation along the Central Himalaya (original) (raw)

Abstract

Using an updated set of GPS surface velocities, the present study provides fault locking behavior and slip rate distribution of the Main Himalayan Thrust (MHT) along the central Himalaya. The two-dimensional velocity field is inverted through Bayesian inversion to estimate fault geometry and kinematic parameters of the MHT along the central Himalaya. The modeling results reveal that: (1) MHT is fully locked in the upper flat (0-9 km), partially locked along the mid-crustal ramp (15-21 km), and it is creeping in the deeper flat (> 21 km); (2) there is an insignificant slip rate of MHT along the locked-to-creeping transition zone, indicating its partially coupled/locked behavior; (3) along the deeper flat of the MHT, the estimated creeping rate is ~16.3 mm/yr, ~14.7 mm/yr, and ~14.3 mm/yr along western, central, and eastern Nepal, respectively; and (4) along the MHT on the upper crust, the modeled locking width turns out to be 97 km, 106 km, and 129 km in the western, central, and ...

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References (51)

  1. Ader T, Avouac JP, Liu-Zeng J, Lyon-Caen H, Bollinger L, Galetzka J, Genrich J, Thomas M, Chanard K, Sapkota SN, Rajaure S (2012) Convergence rate across the Nepal Himalaya and interseismic coupling on the Main Himalayan Thrust: Implications for seismic hazard. J Geophys Res Solid Earth 117(B4).
  2. Amey RMJ, Hooper A, Walters RJ (2018) A Bayesian method for incorporating self-similarity into earthquake slip inversions. J Geophys Res Solid Earth 123(7), 6052-6071.
  3. Avouac JP (2003) Mountain building, erosion, and the seismic cycle in the Nepal Himalaya. Adv Geophys 46, 1-80.
  4. Bagnardi M, Hooper A (2018) Inversion of surface deformation data for rapid estimates of source parameters and uncertainties: A Bayesian approach. Geochem, Geophys, Geosys 19(7), 2194-2211.
  5. Bettinelli P, Avouac JP, Flouzat M, Jouanne F, Bollinger L, Willis P, Chitrakar GR (2006) Plate motion of India and interseismic strain in the Nepal Himalaya from GPS and DORIS measurements. J Geod 80(8-11), 567-589.
  6. Bilham R, Larson K, Freymueller J ( 1997) GPS measurements of present-day convergence across the Nepal Himalaya. Nat 386, 61.
  7. Bilham R, Blume F, Bendick R, Gaur VK (1998) Geodetic constraints on the translation and deformation of India: Implications for future great Himalayan earthquakes. Cur Sci 213-229.
  8. Bilham R, Gaur VK, Molnar P (2001) Himalayan seismic hazard. Sci 293(5534), 1442-1444.
  9. Bilham R, Mencin D, Bendick R, Burgmann R (2017) Implications for elastic energy storage in the Himalaya from the Gorkha 2015 earthquake and other incomplete ruptures of the Main Himalayan Thrust. Quaternary Int 462, 3- 21. Bollinger L, Sapkota SN, Tapponnier P, Klinger Y, Rizza M, Van der Woerd J, Tiwari DR, Pandey R, Bitri A, Bes de Berc S (2014) Estimating the return times of great Himalayan earthquakes in eastern Nepal: Evidence from the Patu and Bardibas strands of the Main Frontal Thrust. J Geophys Res Solid Earth 119(9), 7123-7163.
  10. Burgmann R, Larson KM, Bilham R (1999) Model inversion of GPS and leveling measurements across the Himalaya: Implications of earthquake hazards and geodetic networks. Himalayan Geol 20, 59-72.
  11. Burgmann R, Kogan MG, Steblov GM, Hilley G, Levin VE, Apel E (2005) Interseismic coupling and asperity distribution along the Kamchatka subduction zone. J Geophys Res Solid Earth 110(B7).
  12. Cattin R, Avouac JP (2000) Modeling mountain building and the seismic cycle in the Himalaya of Nepal. J Geophys Res Solid Earth 105(B6), 13389-13407.
  13. Chen Q, Freymueller JT, Yang Z, Xu C, Jiang W, Wang Q, Liu J (2004) Spatially variable extension in southern Tibet based on GPS measurements. J Geophys Res Solid Earth 109(B9).
  14. Ching KE, Gourley JR, Lee YH, Hsu SC, Chen KH, Chen CL (2016) Rapid deformation rates due to development of diapiric anticline in southwestern Taiwan from geodetic observations. Tectonophys 692, 241-251.
  15. Dal Zilio L, Jolivet R, van Dinther Y (2020) Segmentation of the Main Himalayan Thrust illuminated by Bayesian inference of interseismic coupling. Geophys Res Let 47(4), e2019GL086424.
  16. Fukuda JI, Johnson KM (2008) A fully Bayesian inversion for spatial distribution of fault slip with objective smoothing. Bull Seismolo Soci America 98(3), 1128-1146.
  17. Gahalaut VK, Kundu B (2012) Possible influence of subducting ridges on the Himalayan arc and on the ruptures of great and major Himalayan earthquakes. Gondwana Res 21(4), 1080-1088.
  18. Harvey JE, Burbank DW, Bookhagen B (2015) Along-strike changes in Himalayan thrust geometry: Topographic and tectonic discontinuities in western Nepal. Lithosphere 7(5), 511-518.
  19. Hubbard J, Almeida R, Foster A, Sapkota SN, Burgi P, Tapponnier P (2016) Structural segmentation controlled the 2015 Mw 7.8 Gorkha earthquake rupture in Nepal. Geolo 44(8), 639-642.
  20. Hsu YJ, Simons M, Yu SB, Kuo LC, Chen HY (2003) A two-dimensional dislocation model for interseismic deformation of the Taiwan mountain belt. Earth Planetary Sci Let 211(3-4), 287-94.
  21. Johnson KM, Segall P, Yu SB (2005) A viscoelastic earthquake cycle model for Taiwan. J Geophys Res Solid Earth 110(B10).
  22. Jouanne F, Mugnier JL, Pandey MR, Gamond JF, Le Fort P, Serrurier L, Vigny C, Avouac JP (1999) Oblique convergence in the Himalayas of western Nepal deduced from preliminary results of GPS measurements. Geophys Res Let 26(13), 1933-1936.
  23. Jouanne F, Mugnier JL, Gamond JF, Le Fort P, Pandey MR, Bollinger L, Flouzat M, Avouac JP (2004) Current shortening across the Himalayas of Nepal. Geophys J Int 157(1), 1-4.
  24. Jouanne F, Mugnier JL, Sapkota SN, Bascou P, Pecher A (2017) Estimation of coupling along the Main Himalayan Thrust in the central Himalaya. J Asian Earth Sci 133, 62-71.
  25. Kumar P, Yuan X, Kind R, Ni J (2006) Imaging the colliding Indian and Asian lithospheric plates beneath Tibet. J Geophys Res Solid Earth 111(B6).
  26. Larson KM, Burgmann R, Bilham R, Freymueller JT (1999) Kinematics of the India-Eurasia collision zone from GPS measurements. J Geophys Res Solid Earth 104(B1), 1077-1093.
  27. Lave J, Avouac JP (2000) Active folding of fluvial terraces across the Siwaliks Hills, Himalayas of central Nepal. J Geophys Res Solid Earth 105(B3), 5735-5770.
  28. Li Y, Song X, Shan X, Qu C, Wang Z (2016) Locking degree and slip rate deficit distribution on MHT fault before 2015 Nepal Mw 7.9 earthquake. J Asian Earth Sci 119, 78-86.
  29. Li S, Wang Q, Chen G, He P, Ding K, Chen Y, Zou R (2019) Interseismic Coupling in the Central Nepalese Himalaya: Spatial Correlation with the 2015 Mw 7.9 Gorkha Earthquake. Pur Appl Geophys 176(9), 3893-3911.
  30. Lindsey EO, Almeida R, Mallick R, Hubbard J, Bradley K, Tsang LL, Liu Y, Burgmann R, Hill EM (2018) Structural control on downdip locking extent of the Himalayan megathrust. J Geophys Res Solid Earth 123(6), 5265-5278.
  31. Liu M, Yang Y, Stein S, Zhu Y, Engeln J (2000) Crustal shortening in the Andes: Why do GPS rates differ from geological rates?. Geophys Res Let 27(18), 3005-3008.
  32. Mugnier JL, Huyghe P, Gajurel AP, Becel D (2005) Frontal and piggy-back seismic ruptures in the external thrust belt of western Nepal. J Asian Ear Sci 25(5) 707-717.
  33. Mugnier JL, Gajurel A, Huyghe P, Jayangondaperumal R, Jouanne F, Upreti B (2013) Structural interpretation of the great earthquakes of the last millennium in the central Himalaya. Ear Sci Rev 127, 30-47.
  34. Nicol A, Wallace LM (2007) Temporal stability of deformation rates: Comparison of geological and geodetic observations, Hikurangi subduction margin, New Zealand. Ear Planet Sci Let 258(3-4), 397-413.
  35. Nikolaev VG (2002) Afghan-Tajik depression: Architecture of sedimentary cover and evolution. Russ J Ear Sci 4(6).
  36. Pandey MR, Tandukar RP, Avouac JP, Lave J, Massot JP (1995) Interseismic strain accumulation on the Himalayan crustal ramp (Nepal). Geophys Res Let 22(7) 751-754.
  37. Rajendran CP, Sanwal J, John B, Anandasabari K, Rajendran K, Kumar P, Jaiswal M, Chopra S (2019) Footprints of an elusive mid-14th century earthquake in the central Himalaya: Consilience of evidence from Nepal and India. Geolo J 54(5), 2829-2846.
  38. Robinson DM (2008) Forward modeling the kinematic sequence of the central Himalayan thrust belt, western Nepal Himalayan thrust belt, western Nepal. Geosph 4(5), 785-801.
  39. Sapkota SN, Bollinger L, Klinger Y, Tapponnier P, Gaudemer Y, Tiwari D (2013) Primary surface ruptures of the great Himalayan earthquakes in 1934 and 1255. Nat Geosci 6(1), 71-76.
  40. Shen ZK, Jackson DD, Ge BX (1996) Crustal deformation across and beyond the Los Angeles basin from geodetic measurements. J Geophys Solid Earth 101(B12) 27957-27980.
  41. Song TR, Simons M (2003) Large trench-parallel gravity variations predict seismogenic behavior in subduction zones. Sci 301(5633), 630-633.
  42. Sreejith KM, Sunil PS, Agrawal R, Saji AP, Rajawat AS, Ramesh DS (2018) Audit of stored strain energy and extent of future earthquake rupture in central Himalaya. Scient Rep 8(1), 1-9.
  43. Stevens VL, Avouac JP (2015) Interseismic coupling on the main Himalayan thrust. Geophs Res Let 42(14), 5828- 5837.
  44. Sun J, Johnson KM, Cao Z, Shen Z, Burgmann R, Xu X (2011) Mechanical constraints on inversion of coseismic geodetic data for fault slip and geometry: Example from InSAR observation of the 6 October 2008 Mw 6.3
  45. Dangxiong-Yangyi (Tibet) earthquake. J Geophys Res Solid Earth 116(B1).
  46. Wallace K, Bilham R, Blume F, Gaur VK, Gahalaut V (2005) Surface deformation in the region of the 1905 Kangra Mw=7.8 earthquake in the period 1846-2001. Geophys Res Let 32(15).
  47. Wells RE, Blakely RJ, Sugiyama Y, Scholl DW, Dinterman PA (2003) Basin-centered asperities in great subduction zone earthquakes: A link between slip, subsidence, and subduction erosion?. J Geophys Res Solid Earth 108(B10).
  48. Wesnousky SG, Kumahara Y, Chamlagain D, Pierce IK, Reedy T, Angster SJ, Giri B (2017) Large paleoearthquake timing and displacement near Damak in eastern Nepal on the Himalayan Frontal Thrust. Geophys Res Let 44(16), 8219-8226.
  49. Wobus C, Heimsath A, Whipple K, Hodges K (2005) Active out-of-sequence thrust faulting in the central Nepalese Himalaya. Nat 434(7036), 1008-1011.
  50. Yin A (2006) Cenozoic tectonic evolution of the Himalayan orogen as constrained by along-strike variation of structural geometry, exhumation history, and foreland sedimentation. Ear-Sci Rev 76(1-2), 1-31.
  51. Zheng G, Wang H, Wright TJ, Lou Y, Zhang R, Zhang W, Shi C, Huang J, Wei N (2017) Crustal deformation in the India-Eurasia collision zone from 25 years of GPS measurements. J Geophys Res Solid Earth 122(11), 9290- 9312.