Prof Shamita Das

Professor of Earth Sciences


Research Theme
Tectonics, volcanoes and hazards

Research Area
Seismology


Research Profile

I am a seismologist and received my doctorate at MIT in 1976. My research in earthquake studies has been conducted in several broad areas of observational and theoretical seismology over the last three decades. The major goal of the work is to understand the physics of the earthquake preparation and faulting process, and to predict expected motion at sites of engineering interest (the built environment) due to large earthquakes. The long-term goal is to prepare the physical basis for developing the capability to predict earthquakes, in future, if possible. Current research is focussed on the scaling of small to large earthquakes, study of very large submarine earthquake which cannot be studied by any other means such as GPS or SAR, and study of deep earthquakes and shapes of deep seismic zones along with its implications for mantle dynamics.

Recently, I have been working on great earthquakes in Sumatra, Antarctica, and Indonesia. I have served on the UK Government's Natural Hazards Working Group, set up by Sir David King, Chief Scientific Advisor to the UK Government. I am a Fellow of the American Geophysical Union.


Selected Publications (Complete Publications) (CV)

  • Bizzarri, A, Das, S, (2012) 'Mechanics of 3-D shear cracks between Rayleigh and shear wave rupture speeds', EARTH AND PLANETARY SCIENCE LETTERS. pp. 397-404 doi: 10.1016/j.epsl.2012.09.053
  • Twardzik, C, Das, S, Madariaga, R, Custódio, S, (2012) 'Robust features of the source process for the 2004 Parkfield, California, earthquake from strong-motion seismograms', Geophysical Journal International. pp. 1245-1254 doi: 10.1111/j.1365-246X.2012.05653.x
  • Singh, SC, Hananto, N, Mukti, M, Robinson, DP, Das, S, Chauhan, A, Carton, H, Gratacos, B, Midnet, S, Djajadihardja, Y, Harjono, H, (2011) 'Aseismic zone and earthquake segmentation associated with a deep subducted seamount in Sumatra', NATURE GEOSCIENCE. pp. 308-311 doi: 10.1038/NGEO1119
  • Das, S, Chen, Y-T, (2011) 'Yun-tai Chen Receives 2010 International Award', Eos, Transactions American Geophysical Union. pp. 113-113 doi: 10.1029/2011EO130009
  • Das, S, (2010) 'Earthquake supershear rupture speeds Preface', TECTONOPHYSICS. pp. 213-215 doi: 10.1016/j.tecto.2010.07.009
  • Robinson, DP, Das, S, Searle, MP, (2010) 'Earthquake fault superhighways', TECTONOPHYSICS. pp. 236-243 doi: 10.1016/j.tecto.2010.01.010
  • Das, S, (2010) 'Earthquake supershear rupture speeds', Tectonophysics. pp.
  • Bouchon, M, Renard, F, Karabulut, H, Bouin, M-P, Schmittbuhl, J, Vallée, M, Archuleta, R, Das, S, Marsan, D, (2010) 'Faulting characteristics of supershear earthquakes', Tectonophysics. pp. 244-253 doi: 10.1016/j.tecto.2010.06.011
  • Das, S, (2007) 'Geophysics. The need to study speed.', Science. pp. 905-906 doi: 10.1126/science.1142143
  • Robinson, DP, Brough, C, Das, S, (2006) 'The M-w 7.8, 2001 Kunlunshan earthquake: Extreme rupture speed variability and effect of fault geometry', JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH. pp. doi: 10.1029/2005JB004137
  • Robinson, DP, Das, S, Watts, AB, (2006) 'Earthquake rupture stalled by a subducting fracture zone.', Science. pp. 1203-1205 doi: 10.1126/science.1125771
  • Ammon, CJ, Ji, C, Thio, HK, Robinson, D, Ni, S, Hjorleifsdottir, V, Kanamori, H, Lay, T, Das, S, Helmberger, D, Ichinose, G, Polet, J, Wald, D, (2005) 'Rupture process of the 2004 Sumatra-Andaman earthquake.', Science. pp. 1133-1139 doi: 10.1126/science.1112260
  • Das, S, (2004) 'Seismicity gaps and the shape of the seismic zone in the Banda Sea region from relocated hypocenters', JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH. pp. 1-18 doi: 10.1029/2004JB003192
  • Das, S, (2004) 'Dynamic fracture mechanics in study of the earthquake rupturing process: theory and observation (vol 51, pg 11, 2003)', JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS. pp. 2185-2186 doi: 10.1016/j.jmps.2004.06.003
  • Das, S, (2004) 'Erratum to “Dynamic fracture mechanics in the study of the earthquake rupturing process: theory and observation” [Journal of the Mechanics and Physics of Solids 2003; 51 (11–12): 1939–1955]', Journal of the Mechanics and Physics of Solids. pp. 2185-2186 doi: 10.1016/j.jmps.2004.06.003
  • Das, S, Henry, C, (2003) 'Spatial relation between main earthquake slip and its aftershock distribution', REVIEWS OF GEOPHYSICS. pp. doi: 10.1029/2003RG000119
  • Henry, C, Das, S, (2002) 'The M-w 8.2, 17 February 1996 Biak, Indonesia, earthquake: Rupture history, aftershocks, and fault plane properties', JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH. pp. doi: 10.1029/2001JB000796
  • Antonioli, A, Cocco, M, Das, S, Henry, C, (2002) 'Dynamic stress triggering during the great 25 March 1998 Antarctic Plate earthquake', BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA. pp. 896-903 doi: 10.1785/0120010164
  • Das, S, (2002) 'Simple models in the mechanics of earthquake rupture', IMAGING OF COMPLEX MEDIA WITH ACOUSTIC AND SEISMIC WAVES. pp. 311-332
  • Henry, C, Das, S, (2001) 'Aftershock zones of large shallow earthquakes: fault dimensions, aftershock area expansion and scaling relations', GEOPHYSICAL JOURNAL INTERNATIONAL. pp. 272-293 doi: 10.1046/j.1365-246X.2001.00522.x
  • Robinson, DP, Henry, C, Das, S, Woodhouse, JH, (2001) 'Simultaneous rupture along two conjugate planes of the Wharton Basin earthquake.', Science. pp. 1145-1148 doi: 10.1126/science.1059395
  • Henry, C, Das, S, Woodhouse, JH, (2000) 'The great March 25, 1998, Antarctic Plate earthquake: Moment tensor and rupture history', JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH. pp. 16097-16118 doi: 10.1029/2000JB900077
  • Das, S, Schoffel, HJ, Gilbert, F, (2000) 'Mechanism of slab thickening near 670 km under Indonesia', GEOPHYSICAL RESEARCH LETTERS. pp. 831-834 doi: 10.1029/1999GL010865
  • Campus, P, Das, S, (2000) 'Comparison of the rupture and radiation characteristics of intermediate and deep earthquakes', JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH. pp. 6177-6189 doi: 10.1029/1999JB900384
  • Pavlis, GL, Das, S, (2000) 'The Pamir-Hindu Kush seismic zone as a strain marker for flow in the upper mantle', TECTONICS. pp. 103-115 doi: 10.1029/1999TC900062
  • Schoffel, HJ, Das, S, (1999) 'Fine details of the Wadati-Benioff zone under Indonesia and its geodynamic implications', JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH. pp. 13101-13114 doi: 10.1029/1999JB900091
  • Pegler, G, Das, S, (1998) 'An enhanced image of the Pamir Hindu Kush seismic zone from relocated earthquake hypocentres', GEOPHYSICAL JOURNAL INTERNATIONAL. pp. 573-595 doi: 10.1046/j.1365-246x.1998.00582.x
  • Sarao, A, Das, S, Suhadolc, P, (1998) 'Effect of non-uniform station coverage on the inversion for earthquake rupture history for a Haskell-type source model', JOURNAL OF SEISMOLOGY. pp. 1-25 doi: 10.1023/A%3A1009795916726
  • Das, S, Kostrov, BV, (1997) 'Determination of the polynomial moments of the seismic moment rate density distribution with positivity constraints', GEOPHYSICAL JOURNAL INTERNATIONAL. pp. 115-126 doi: 10.1111/j.1365-246X.1997.tb00598.x
  • Pegler, G, Das, S, (1996) 'The 1987-1992 Gulf of Alaska earthquakes', TECTONOPHYSICS. pp. 111-136 doi: 10.1016/0040-1951%2895%2900112-3
  • Pegler, G, Das, S, (1996) 'Analysis of the relationship between seismic moment and fault length for large crustal strike-slip earthquakes between 1977-92', GEOPHYSICAL RESEARCH LETTERS. pp. 905-908 doi: 10.1029/96GL00963
  • Das, S, Suhadolc, P, (1996) 'On the inverse problem for earthquake rupture: The Haskell-type source model', JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH. pp. 5725-5738 doi: 10.1029/95JB03533
  • PEGLER, G, DAS, S, WOODHOUSE, J, (1995) 'A SEISMOLOGICAL STUDY OF THE EASTERN NEW-GUINEA AND THE WESTERN SOLOMON SEA REGIONS AND ITS TECTONIC IMPLICATIONS', GEOPHYSICAL JOURNAL INTERNATIONAL. pp. 961-981 doi: 10.1111/j.1365-246X.1995.tb06849.x
  • DAS, S, KOSTROV, B, (1994) 'DIVERSITY OF SOLUTIONS OF THE PROBLEM OF EARTHQUAKE FAULTING INVERSION - APPLICATION TO SH-WAVES FOR THE GREAT 1989 MACQUARIE RIDGE EARTHQUAKE', PHYSICS OF THE EARTH AND PLANETARY INTERIORS. pp. 293-318 doi: 10.1016/0031-9201%2894%2990119-8
  • DAS, S, (1993) 'THE MACQUARIE RIDGE EARTHQUAKE OF 1989', GEOPHYSICAL JOURNAL INTERNATIONAL. pp. 778-798 doi: 10.1111/j.1365-246X.1993.tb01492.x
  • DAS, S, (1992) 'REACTIVATION OF AN OCEANIC FRACTURE BY THE MACQUARIE RIDGE EARTHQUAKE OF 1989', NATURE. pp. 150-153 doi: 10.1038/357150a0