Cooperative Institute for Research in Environmental Sciences at the University of Colorado Boulder

Roger Bilham

Research Interests

I am a research scientist in CIRES with interests in earthquake, landslide, flood and volcano processes and their impact on society.   I use various terrestrial and remote sensing geodetic methods to capture the deformation of the Earth's crust, and engineering and historical investigative methods to quantify the damage they produce. My current research includes the quantitative study of earthquakes in India and its western margin, and the investigation of aseismic fault slip in Israel, Pakistan, Anatolia and California.

Current Research

Our collaborative investigations with Kandilli Observatory, Istanbul, involve measurements of strain and aseismic slip on the northern and eastern Anatolian faults to learn more about the relationship between earthquakes and fault creep. In December 2019 the largest creep event (10 mm) yet recorded on the northern Anatolian fault propagated eastward near Ismetpasa in seven sub-events with velocities of up to 2.3 m/s.  Surface after-slip in the Mw6.8 2020 Sivrice/Elazig earthquake on the eastern Anatolian fault commenced a few days after the mainshock and decayed with a time constant of approximately 20 days.  Unlike in previous afterslip episodes elsewhere, however, slip rates accelerated after local aftershocks and continues at low rates a year after the event. Slip was also triggered by this earthquake on the East Anatolian fault some 40 km east of the rupture zone initiating a creep event that propagated eastward at 0.26 m/s. Slip was triggered on the southern San Andreas fault following the 2019 Ridgecrest earthquakes and propagated southward eventually triggering minor seismicity near the Salton Sea.

As part of an investigation to document coseismic slip during a major earthquake, we have upgraded Hayward fault creepmeters to capture coseismic rupture in a pending earthquake at 1 Hz sample rates. The Hayward fault creepmeters have been found to act as strain-meters in that they record the harmonics of tidal loading in San Francisco Bay.  Gas was vented from the East Anatolian fault following the Sivrice earthquake and experiments to measure potential CO2, H2, CH4 and 222Rn venting during creep events on the northern and southern San Andreas faults have been implemented.  The introduction of multiple axis extensometers across creeping faults is providing surprising insight into their behavior.  In particular creeping faults appear to dilate several mm during aseismic slip in the dry season and to close rapidly during heavy precipitation, a behavior we suspect is attributable to the rotation and lubrication of lozenge-shaped clay clasts in the fault zone.

In a collaborative project with NED University, Karachi, we have investigated Medieval and pre-historic flooding of the Kashmir Valley.  Quite small landslides in the Pir Panjal mountains can dam the river Jhelum, causing the entire valley to flood.  We calculate that breach of a 3 year transient dam released a 14 cubic km catastrophic flood that drained the valley in the ninth century transporting boulders with diameters exceeding 12 m, similar to those observed in the stream bed near Muzafferabad.  Were the river dammed for a century, as occurred in the Pamir landslide that formed Lake Sarez, 400 cubic km of water could be stored in the Kashmir valley flooding Srinagar to a depth of 170 m.  Although ancient shorelines at this level exist in the Kashmir valley, the absence of mega-boulders much larger than 13 m in diameter donstream suggests that floods with volumes >15 cubic km probably have not occurred, and these shorelines were shifted to their current levels by tectonic processes.
 



The effects of aseismic slip on the San Andreas fault. In the past five years, the Pacific Plate in the foreground has moved 5 cm northwest relative to the road leading to Hollister on the North American Plate. The slip occurs in episodes with 2 hour duration and 3 mm amplitude about twice each year.  Gas is vented from the creeping fault during collapse of the fault zone following months of dilatant opening.

Honors and Awards

  • W. S. Jardetzky Lecture at Lamont-Doherty Earth Observatory, 2015
  • H. L. Welsh Distinguished Lecturer, Unversity of Toronto, Department of Physics, 2012
  • Mallet-Milne Lecture, Society for Earthquake and Civil Engineering Dynamics, 2009
  • Visiting Miller Professor, University of California Berkeley, 2004
  • Fellow, American Geophysical Union, 2002
  • Guggenheim Fellow, Oxford University, 1999

View Publications

  • Kravitz, K; Mueller, K; Bilham, RG; Walton, M. (Jun 2020). Active Steady-State Creep on A Nontectonic Normal Fault in Southeast Utah: Implications for Strain Release in a Rapidly Deforming Salt System. GEOPHYSICAL RESEARCH LETTERS , 47(11). 10.1029/2020GL087081
  • Bilham, R; Castillo, B. (Mar 2020). The July 2019 Ridgecrest, California, Earthquake Sequence Recorded by Creepmeters: Negligible Epicentral Afterslip and Prolonged Triggered Slip at Teleseismic Distances. SEISMOLOGICAL RESEARCH LETTERS , 91(2). 10.1785/0220190293
  • Bilham, R. (2019). Himalayan earthquakes: a review of historical seismicity and early 21st century slip potential. HIMALAYAN TECTONICS: A MODERN SYNTHESIS, 483, 423-+. 10.1144/SP483.16
  • Tymofyeyeva, E; Fialko, Y; Jiang, JL; Xu, XH; Sandwell, D; Bilham, R; Rockwell, TK; Blanton, C; Burkett, F; Gontz, A; Moafipoor, S. (SEP 2019). Slow Slip Event On the Southern San Andreas Fault Triggered by the 2017 M(w)8.2 Chiapas (Mexico) Earthquake. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 124(9), 9956-9975. 10.1029/2018JB016765
  • Bilham, R; Kakar, NU; Kakar, DM; Wang, K; Burgmann, R; Barnhart, WD. (NOV 2019). The 1892 Chaman, Pakistan, Earthquake. SEISMOLOGICAL RESEARCH LETTERS, 90(6), 2293-2303. 10.1785/0220190148
  • Aslan, G; Lasserre, C; Cakir, Z; Ergintav, S; Ozarpaci, S; Dogan, U; Bilham, R; Renard, F. (FEB 2019). Shallow Creep Along the 1999 Izmit Earthquake Rupture (Turkey) From GPS and High Temporal Resolution Interferometric Synthetic Aperture Radar Data (2011-2017). JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 124(2), 2218-2236. 10.1029/2018JB017022
  • Hough, S. E., and R Bilham. (2018). Poroelastic stress changes associated with primary oil production in the Los Angeles Basin, California. The Leading Edge. doi 10.1190/tle37020108.1
  • Hough, SE; Bilham, R. (DEC 2018). Revisiting Earthquakes in the Los Angeles, California, Basin During the Early Instrumental Period: Evidence for an Association With Oil Production. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 123(12), 10684-10705. 10.1029/2017JB014616
  • Bilham, R, D Mencin, R Bendick and R Burgmann. (30-Dec 2017). Implications for elastic energy storage in the Himalaya from the Gorkha 2015 earthquake and other incomplete ruptures of the Main Himalayan Thrust. QUATERNARY INTERNATIONAL, 462, 3-21. 10.1016/j.quaint.2016.09.055
  • Szeliga, W and R Bilham. (OCT 2017). New Constraints on the Mechanism and Rupture Area for the 1905 M-w 7.8 Kangra Earthquake, Northwest Himalaya. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 107(5), 2467-2479. 10.1785/0120160267
  • Bendick, R and R Bilham. (28-Aug 2017). Do weak global stresses synchronize earthquakes?. GEOPHYSICAL RESEARCH LETTERS, 44(16), 8320-8327. 10.1002/2017GL074934
  • England, P and R Bilham. (SEP 2015). The Shillong Plateau and the great 1897 Assam earthquake. TECTONICS, 34(9), 1792-1812. 10.1002/2015TC003902
  • Amoruso, A, L Crescentini, R Scarpa, R Bilham, AT Linde and IS Sacks. (AUG 2015). Abrupt magma chamber contraction and microseismicity at Campi Flegrei, Italy: Cause and effect determined from strainmeters and tiltmeters. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 120(8), 5467-5478. 10.1002/2015JB012085
  • Wei, M, YJ Liu, Y Kaneko, JJ McGuire and R Bilham. (1-Oct 2015). Dynamic triggering of creep events in the Salton Trough, Southern California by regional M >= 5.4 earthquakes constrained by geodetic observations and numerical simulations. EARTH AND PLANETARY SCIENCE LETTERS, 427, 1-10. 10.1016/j.epsl.2015.06.044
  • Bendick, R, SF Khan, R Burgmann, F Jouanne, P Banerjee, MA Khan and R Bilham. (16-Jun 2015). Postseismic relaxation in Kashmir and lateral variations in crustal architecture and materials. GEOPHYSICAL RESEARCH LETTERS, 42(11), 4375-4383. 10.1002/2015GL064670
  • Bilham, R. (2014). Aggravated Earthquake Risk in South Asia: Engineering versus Human Nature. EARTHQUAKE HAZARD, RISK AND DISASTERS, 103-141. 10.1016/B978-0-12-394848-9.00005-5
  • Lindsey, EO, Y Fialko, Y Bock, DT Sandwell and R Bilham. (OCT 2014). Localized and distributed creep along the southern San Andreas Fault. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 119(10), 7909-7922. 10.1002/2014JB011275
  • Vernant, P, R Bilham, W Szeliga, D Drupka, S Kalita, AK Bhattacharyya, VK Gaur, P Pelgay, R Cattin and T Berthet. (AUG 2014). Clockwise rotation of the Brahmaputra Valley relative to India: Tectonic convergence in the eastern Himalaya, Naga Hills, and Shillong Plateau. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 119(8), 6558-6571. 10.1002/2014JB011196
  • Barnhart, WD, GP Hayes, RW Briggs, RD Gold and R Bilham. (1-Oct 2014). Ball-and-socket tectonic rotation during the 2013 M(w)7.7 Balochistan earthquake. EARTH AND PLANETARY SCIENCE LETTERS, 403, 210-216. 10.1016/j.epsl.2014.07.001
  • Bilham, R and BS Bali. (FEB 2014). A ninth century earthquake-induced landslide and flood in the Kashmir Valley, and earthquake damage to Kashmirs Medieval temples. BULLETIN OF EARTHQUAKE ENGINEERING, 12(1), 79-109. 10.1007/s10518-013-9504-x
  • He, JK, P Vernant, J Chery, WM Wang, SJ Lu, WF Ku, WH Xia and R Bilham. (28-Oct 2013). Nailing down the slip rate of the Altyn Tagh fault. GEOPHYSICAL RESEARCH LETTERS, 40(20), 5382-5386. 10.1002/2013GL057497
  • Schiffman, C, BS Bali, W Szeliga and R Bilham. (16-Nov 2013). Seismic slip deficit in the Kashmir Himalaya from GPS observations. GEOPHYSICAL RESEARCH LETTERS, 40(21), 5642-5645. 10.1002/2013GL057700
  • Bilham, R. (24-Oct 2013). The Dynamics of Disaster. NATURE, 502(7472), 438-439.
  • Hauksson, E, J Stock, R Bilham, M Boese, XW Chen, EJ Fielding, J Galetzka, KW Hudnut, K Hutton, LM Jones, H Kanamori, PM Shearer, J Steidl, J Treiman, SJ Wei and WZ Yang. (MAR-APR 2013). Report on the August 2012 Brawley Earthquake Swarm in Imperial Valley, Southern California. SEISMOLOGICAL RESEARCH LETTERS, 84(2), 177-189. 10.1785/0220120169
  • Bilham, R. (MAR-APR 2013). Nicholas Neocles Ambraseys 1929-2012 In Memoriam. SEISMOLOGICAL RESEARCH LETTERS, 84(2), 173-176. 10.1785/0220130007
  • Bilham, R. (22-Jan 2013). Societal and observational problems in earthquake risk assessments and their delivery to those most at risk. TECTONOPHYSICS, 584, 166-173. 10.1016/j.tecto.2012.03.023
  • Lienkaemper, JJ, FS McFarland, RW Simpson, RG Bilham, DA Ponce, JJ Boatwright and SJ Caskey. (FEB 2012). Long-Term Creep Rates on the Hayward Fault: Evidence for Controls on the Size and Frequency of Large Earthquakes. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 102(1), 31-41. 10.1785/0120110033
  • Gaur, VK and R Bilham. (10-Dec 2012). Discussion of seismicity near Jaitapur. CURRENT SCIENCE, 103(11), 1273-1278.
  • Szeliga, W, R Bilham, DM Kakar and SH Lodi. (8-Aug 2012). Interseismic strain accumulation along the western boundary of the Indian subcontinent. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 117. 10.1029/2011JB008822
  • Satyabala, SP, ZH Yang and R Bilham. (FEB 2012). Stick-slip advance of the Kohat Plateau in Pakistan. NATURE GEOSCIENCE, 5(2), 147-150. 10.1038/NGEO1373
  • Perez, OJ, R Bilham, M Sequera, L Molina, P Gavotti, H Codallo, C Moncayo, C Rodriguez, R Velandia, M Guzman and P Molnar. (JAN 2011). GPS DERIVED VELOCITY FIELD IN WESTERN VENEZUELA: DEXTRAL SHEAR COMPONENT ASSOCIATED TO THE BOCONO FAULT AND CONVERGENT COMPONENT NORMAL TO THE ANDES. INTERCIENCIA, 36(1), 39-44.
  • Wei, M, D Sandwell, Y Fialko and R Bilham. (13-Jan 2011). Slip on faults in the Imperial Valley triggered by the 4 April 2010 Mw 7.2 El Mayor-Cucapah earthquake revealed by InSAR. GEOPHYSICAL RESEARCH LETTERS, 38. 10.1029/2010GL045235
  • Bilham, R, BS Bali, MI Bhat and S Hough. (2010). Historical earthquakes in Srinagar, Kashmir: Clues from the Shiva Temple at Pandrethan. ANCIENT EARTHQUAKES, 471, 107-117. 10.1130/2010.2471(10)
  • Bilham, R and S Lodi. (2010). The door knockers of Mansurah: Strong shaking in a region of low perceived seismic risk, Sindh, Pakistan. ANCIENT EARTHQUAKES, 471, 29-37. 10.1130/2010.2471(03)
  • Szeliga, W, S Hough, S Martin and R Bilham. (1-Apr 2010). Intensity, Magnitude, Location, and Attenuation in India for Felt Earthquakes since 1762. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 100(2), 570-584. 10.1785/0120080329
  • Mohadjer, S, R Bendick, A Ischuk, S Kuzikov, A Kostuk, U Saydullaev, S Lodi, DM Kakar, A Wasy, MA Khan, P Molnar, R Bilham and AV Zubovich. (24-Feb 2010). Partitioning of India-Eurasia convergence in the Pamir-Hindu Kush from GPS measurements. GEOPHYSICAL RESEARCH LETTERS, 37. 10.1029/2009GL041737
  • Bilham, R. (11-Feb 2010). Predicting the Unpredictable: The Tumultuous Science of Earthquake Prediction. NATURE, 463(7282), 735-735. 10.1038/463735a
  • Bilham, R. (NOV 2009). The seismic future of cities. BULLETIN OF EARTHQUAKE ENGINEERING, 7(4), 839-887. 10.1007/s10518-009-9147-0
  • Szeliga, W, R Bilham, D Schelling, DM Kakar and S Lodi. (30-Oct 2009). Fold and thrust partitioning in a contracting fold belt: Insights from the 1931 Mach earthquake in Baluchistan. TECTONICS, 28. 10.1029/2008TC002265
  • Hough, S, R Bilham and I Bhat. (JAN-FEB 2009). Kashmir Valley Megaearthquakes Estimates of the magnitudes of past seismic events foretell a very shaky future for this pastoral valley. AMERICAN SCIENTIST, 97(1), 42-49. 10.1511/2009.76.1
  • Clark, MK and R Bilham. (30-May 2008). Miocene rise of the Shillong Plateau and the beginning of the end for the Eastern Himalaya. EARTH AND PLANETARY SCIENCE LETTERS, 269(4-Mar), 336-350. 10.1016/j.epsl.2008.01.045
  • Hough, SE and R Bilham. (NOV 2008). Site response of the Ganges basin inferred from re-evaluated macroseismic, observations from the 1897 Shillong, 1905 Kangra, and 1934 Nepal earthquakes. JOURNAL OF EARTH SYSTEM SCIENCE, 117, 773-782. 10.1007/s12040-008-0068-0
  • Bendick, R, R Bilham, MA Khan and SF Khan. (MAR 2007). Slip on an active wedge thrust from geodetic observations of the 8 October 2005 Kashmir earthquake. GEOLOGY, 35(3), 267-270. 10.1130/G23158A.1
  • Paul, J, AR Lowry, R Bilham, S Sen and R Smalley. (13-Oct 2007). Postseismic deformation of the Andaman Islands following the 26 December, 2004 Great Sumatra-Andaman earthquake. GEOPHYSICAL RESEARCH LETTERS, 34(19). 10.1029/2007GL031024
  • Bilham, R, S Lodi, S Hough, S Bukharyl, AM Khan and SFA Rafeeqi. (NOV-DEC 2007). Seismic hazard in Karachi, Pakistan: Uncertain past, uncertain future. SEISMOLOGICAL RESEARCH LETTERS, 78(6), 601-613. 10.1785/gssrl.78.6.601
  • Bilham, R. (JUL-AUG 2006). Harry Fielding Reid medal citation for Nicholas Ambrasey. Seismol. Res. Lett., 77(4), 487-489.
  • Bendick, R, S McClusky, R Bilham, L Asfaw and S Klemperer. (APR 2006). Distributed Nubia-Somalia relative motion and dike intrusion in the Main Ethiopian Rift. Geophys. J. Int., 165(1), 303-310.
  • Bilham, R. (SEP-OCT 2006). Harry Fielding Reid medal citation for Nicholas Ambraseys. Seismol. Res. Lett., 77(5), 606-608.
  • Satyabala, SP and R Bilham. (8-Dec 2006). Surface deformation and subsurface slip of the 28 March 1999 Mw=6.4 west Himalayan Chamoli earthquake from InSAR analysis. GEOPHYSICAL RESEARCH LETTERS, 33(23). 10.1029/2006GL027422
  • Wallace, K, R Bilham, F Blume, VK Gaur and V Gahalaut. (17-May 2006). Geodetic constraints on the Bhuj 2001 earthquake and surface deformation in the Kachchh Rift Basin. GEOPHYSICAL RESEARCH LETTERS, 33(10). 10.1029/2006GL025775
  • Feldl, N and R Bilham. (9-Nov 2006). Great Himalayan earthquakes and the Tibetan plateau. NATURE, 444(7116), 165-170. 10.1038/nature05199
  • Bilham, R, R Engdahl, N Feldl and SP Satyabala. (MAY-JUN 2005). Partial and complete rupture of the Indo-Andaman plate boundary 1847-2004. SEISMOLOGICAL RESEARCH LETTERS, 76(3), 299-311. 10.1785/gssrl.76.3.299
  • Bilham, R. (JAN-FEB 2005). Coseismic strain and the transition to surface afterslip recorded by creepmeters near the 2004 Parkfield epicenter. SEISMOLOGICAL RESEARCH LETTERS, 76(1), 49-57. 10.1785/gssrl.76.1.49
  • Bilham, R and N Ambraseys. (25-May 2005). Apparent Himalayan slip deficit from the summation of seismic moments for Himalayan earthquakes, 1500-2000. CURRENT SCIENCE, 88(10), 1658-1663.
  • Wallace, K, R Bilham, F Blume, VK Gaur and V Gahalaut. (6-Aug 2005). Surface deformation in the region of the 1905 Kangra Mw=7.8 earthquake in the period 1846-2001. GEOPHYSICAL RESEARCH LETTERS, 32(15). 10.1029/2005GL022906
  • Schulte-Pelkum, V, G Monsalve, A Sheehan, MR Pandey, S Sapkota, R Bilham and F Wu. (30-Jun 2005). Imaging the Indian subcontinent beneath the Himalaya. NATURE, 435(7046), 1222-1225. 10.1038/nature03678
  • Hough, SE, R Bilham, K Mueller, W Stephenson, R Williams and J Odum. (MAY-JUN 2005). Wagon loads of sand blows in White County Illinois. SEISMOLOGICAL RESEARCH LETTERS, 76(3), 373-386. 10.1785/gssrl.76.3.373
  • Hough, SE, R Bilham, N Ambraseys and N Feldl. (25-May 2005). Revisiting the 1897 Shillong and 1905 Kangra earthquakes in northern India: Site response, Moho reflections and a triggered earthquake. CURRENT SCIENCE, 88(10), 1632-1638.
  • Mueller, K, SE Hough and R Bilham. (20-May 2004). Analysing the 1811-1812 New Madrid earthquakes with recent instrumentally recorded aftershocks. NATURE, 429(6989), 284-288. 10.1038/nature02557
  • Wallace, K, GH Yin and R Bilham. (15-May 2004). Inescapable slow slip on the Altyn Tagh fault. GEOPHYSICAL RESEARCH LETTERS, 31(9). 10.1029/2004GL019724
  • Bilham, R, N Suszek and S Pinkney. (JUL-AUG 2004). California creepmeters. SEISMOLOGICAL RESEARCH LETTERS, 75(4), 481-492. 10.1785/gssrl.75.4.481
  • Bilham, R. (APR-JUN 2004). Earthquakes in India and the Himalaya: tectonics, geodesy and history. ANNALS OF GEOPHYSICS, 47(3-Feb), 839-858.
  • Kostoglodov, V, SK Singh, JA Santiago, SI Franco, KM Larson, AR Lowry and R Bilham. (8-Aug 2003). A large silent earthquake in the Guerrero seismic gap, Mexico. GEOPHYSICAL RESEARCH LETTERS, 30(15). 10.1029/2003GL017219
  • Hough, SE, S Martin, R Bilham and GM Atkinson. (SEP 2003). A media-based assessment of damage and ground motions from the January 26th, 2001 M7.6 Bhuj, India earthquake. PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-EARTH AND PLANETARY SCIENCES, 112(3), 353-373.
  • Ambraseys, N and R Bilham. (APR 2003). Reevaluated intensities for the great Assam Earthquake of 12 June 1897, Shillong, India. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 93(2), 655-673. 10.1785/0120020093
  • Ambraseys, N and R Bilham. (AUG 2003). Earthquakes and associated deformation in northern Baluchistan 1892-2001. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 93(4), 1573-1605. 10.1785/0120020038
  • Jade, S, M Mukul, IA Parvez, MB Ananda, PD Kumar, VK Gaur, R Bendick, R Bilham, F Blume, K Wallace, IA Abbasi, MA Khan and S Ulhadi. (SEP 2003). Pre-seismic, co-seismic and post-seismic displacements associated with the Bhuj 2001 earthquake derived from recent and historic geodetic data. PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-EARTH AND PLANETARY SCIENCES, 112(3), 331-345.
  • Bilham, R, R Bendick and K Wallace. (SEP 2003). Flexure of the Indian plate and intraplate earthquakes. PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-EARTH AND PLANETARY SCIENCES, 112(3), 315-329.
  • Hough, S and R Bilham. (FEB 2003). Shaken to the core. Nat. Hist., 112(1), 42-48.
  • Ortiz, M and R Bilham. (23-Apr 2003). Source area and rupture parameters of the 31 December 1881 M-w=7.9 Car Nicobar earthquake estimated from tsunamis recorded in the Bay of Bengal. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 108(B4). 10.1029/2002JB001941
  • Wang, Q, PZ Zhang, ZJ Niu, JT Freymueller, X Lai, YX Li, WY Zhu, JN Liu, R Bilham and KM Larson. (OCT 2002). Present-day crustal movement and tectonic deformation in China continent. SCIENCE IN CHINA SERIES D-EARTH SCIENCES, 45(10), 865-874. 10.1360/02yd9085
  • Hough, SE, S Martin, R Bilham and GM Atkinson. (AUG 2002). The 26 January 2001 M 7.6 Bhuj, India, earthquake: Observed and predicted ground motions. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 92(6), 2061-2079. 10.1785/0120010260
  • Weber, JC, TH Dixon, C DeMets, WB Ambeh, P Jansma, G Mattioli, J Saleh, G Sella, R Bilham and O Perez. (JAN 2001). GPS estimate of relative motion between the Caribbean and South American plates, and geologic implications for Trinidad and Venezuela. GEOLOGY, 29(1), 75-78. 10.1130/0091-7613(2001)029<0075:GEORMB>2.0.CO;2
  • Paul, J, R Burgmann, VK Gaur, R Bilham, KM Larson, MB Ananda, S Jade, M Mukal, TS Anupama, G Satyal and D Kumar. (15-Feb 2001). The motion and active deformation of India. GEOPHYSICAL RESEARCH LETTERS, 28(4), 647-650. 10.1029/2000GL011832
  • Searle, M, BR Hacker and R Bilham. (MAR 2001). The Hindu Kush seismic zone as a paradigm for the creation of ultrahigh-pressure diamond- and coesite-bearing continental rocks. J. Geol., 109(2), 143-153.
  • Bilham, R. (MAR 2001). Slow tilt reversal of the Lesser Himalaya between 1862 and 1992 at 78 degrees E, and bounds to the southeast rupture of the 1905 Kangra earthquake. GEOPHYSICAL JOURNAL INTERNATIONAL, 144(3), 713-728. 10.1046/j.1365-246x.2001.01365.x
  • Perez, OJ, R Bilham, R Bendick, N Hernandez, M Hoyer, JR Velandia, C Moncayo and M Kozuch. (FEB 2001). Relative velocity between the Caribbean and South American plates from GPS observations in northern Venezuela. INTERCIENCIA, 26(2), 69-74.
  • Bilham, R and P England. (12-Apr 2001). Plateau pop-up in the great 1897 Assam earthquake. NATURE, 410(6830), 806-809. 10.1038/35071057
  • Perez, OJ, R Bilham, R Bendick, JR Velandia, N Hernandez, C Moncayo, M Hoyer and M Kozuch. (1-Aug 2001). Velocity field across the southern Caribbean plate boundary and estimates of Caribbean/South-American plate motion using GPS geodesy 1994-2000. GEOPHYSICAL RESEARCH LETTERS, 28(15), 2987-2990. 10.1029/2001GL013183
  • Bendick, R and R Bilham. (SEP 2001). How perfect is the Himalayan arc?. GEOLOGY, 29(9), 791-794. 10.1130/0091-7613(2001)029<0791:HPITHA>2.0.CO;2
  • Lowry, AR, KM Larson, V Kostoglodov and R Bilham. (1-Oct 2001). Transient fault slip in Guerrero, southern Mexico. GEOPHYSICAL RESEARCH LETTERS, 28(19), 3753-3756. 10.1029/2001GL013238
  • Wang, Q, PZ Zhang, JT Freymueller, R Bilham, KM Larson, X Lai, XZ You, ZJ Niu, JC Wu, YX Li, JN Liu, ZQ Yang and QZ Chen. (19-Oct 2001). Present-day crustal deformation in China constrained by global positioning system measurements. SCIENCE, 294(5542), 574-577. 10.1126/science.1063647
  • DeMets, C, PE Jansma, GS Mattioli, TH Dixon, F Farina, R Bilham, E Calais and P Mann. (1-Feb 2000). GPS geodetic constraints on Caribbean-North America plate motion. GEOPHYSICAL RESEARCH LETTERS, 27(3), 437-440. 10.1029/1999GL005436
  • Bendick, R, R Bilham, J Freymueller, K Larson and GH Yin. (2-Mar 2000). Geodetic evidence for a low slip rate in the Altyn Tagh fault system. NATURE, 404(6773), 69-72.
  • Bilham, R and TT Yu. (JUN 2000). The morphology of thrust faulting in the 21 September 1999, Chichi, Taiwan earthquake. JOURNAL OF ASIAN EARTH SCIENCES, 18(3), 351-367. 10.1016/S1367-9120(99)00071-1
  • Ambraseys, N and R Bilham. (10-Jul 2000). A note on the kangra M-s=7.8 earthquake of 4 April 1905. CURRENT SCIENCE, 79(1), 45-50.
  • Acton, GD, A Tessema, M Jackson and R Bilham. (15-Aug 2000). The tectonic and geomagnetic significance of paleomagnetic observations from volcanic rocks from central Afar, Africa. EARTH AND PLANETARY SCIENCE LETTERS, 180(4-Mar), 225-241. 10.1016/S0012-821X(00)00173-4
  • Bilham, R and VK Gaur. (10-Nov 2000). Geodetic contributions to the study of seismotectonics in India. CURRENT SCIENCE, 79(9), 1259-1269.
  • Larson, KM, R Burgmann, R Bilham and JT Freymueller. (10-Jan 1999). Kinematics of the India-Eurasia collision zone from GPS measurements. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 104(B1), 1077-1093. 10.1029/1998JB900043
  • Dickey, JO, CR Bentley, R Bilham, JA Carton, RJ Eanes, TA Herring, WM Kaula, GSE Lagerloef, S Rojstaczer, WHF Smith, HM van den Dool, JM Wahr and MT Zuber. (JUN 1999). Gravity and the hydrosphere: new frontier. Hydrol. Sci. J.-J. Sci. Hydrol., 44(3), 407-415.
  • Bilham, R, R Bendick, K Larson, P Mohr, J Braun, S Tesfaye and L Asfaw. (15-Sep 1999). Secular and tidal strain across the main Ethiopian rift. GEOPHYSICAL RESEARCH LETTERS, 26(18), 2789-2792. 10.1029/1998GL005315
  • Bilham, R, F Blume, R Bendick and VK Gaur. (10-Feb 1998). Geodetic constraints on the translation and deformation of India: Implications for future great Himalayan earthquakes. CURRENT SCIENCE, 74(3), 213-229.
  • Bilham, R. (JUL 1998). Death toll from earthquakes. GEOTIMES, 43(7), 4-4.
  • Bilham, R, K Larson, J Freymueller, F Jouanne, P LeFort, P Leturmy, JL Mugnier, JF Gamond, JP Glot, J Martinod, NL Chaudury, GR Chitrakar, UP Gautam, BP Koirala, MR Pandey, R Ranabhat, SN Sapkota, PL Shrestha, MC Thakuri, UR Timilsina, DR Tiwari, G Vidal, C Vigny, A Galy and B deVoogd. (6-Mar 1997). GPS measurements of present-day convergence across the Nepal Himalaya. NATURE, 386(6620), 61-64. 10.1038/386061a0
  • Bilham, R and S Whitehead. (1-Jun 1997). Subsurface creep on the Hayward fault, Fremont, California. GEOPHYSICAL RESEARCH LETTERS, 24(11), 1307-1310. 10.1029/97GL01244
  • Robertson, D, G Sasagawa, F Klopping and R Bilham. (1-Feb 1996). The use of differencing to eliminate environmental effects in the intercomparison of absolute gravity meters. GEOPHYSICAL RESEARCH LETTERS, 23(3), 245-248. 10.1029/96GL00014
  • Linde, AT, MT Gladwin, MJS Johnston, RL Gwyther and RG Bilham. (5-Sep 1996). A slow earthquake sequence on the San Andreas fault. NATURE, 383(6595), 65-68. 10.1038/383065a0
  • Freymueller, J, R Bilham, R Burgmann, KM Larson, J Paul, S Jade and V Gaur. (1-Nov 1996). Global positioning system measurements of Indian plate motion and convergence across the Lesser Himalaya. GEOPHYSICAL RESEARCH LETTERS, 23(22), 3107-3110. 10.1029/96GL02518
  • SIGMUNDSSON, F, P EINARSSON, R BILHAM and E STURKELL. (10-Apr 1995). RIFT-TRANSFORM KINEMATICS IN SOUTH ICELAND - DEFORMATION FROM GLOBAL POSITIONING SYSTEM MEASUREMENTS, 1986 TO 1992. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 100(B4), 6235-6248. 10.1029/95JB00155
  • JOHNSTON, MJS, DP HILL, AT LINDE, J LANGBEIN and R BILHAM. (JUN 1995). TRANSIENT DEFORMATION DURING TRIGGERED SEISMICITY FROM THE 28 JUNE 1992 M(W)=7.3 LANDERS EARTHQUAKE AT LONG-VALLEY VOLCANIC CALDERA, CALIFORNIA. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 85(3), 787-795.
  • HILL, DP, MJS JOHNSTON, JO LANGBEIN and R BILHAM. (10-Jul 1995). RESPONSE OF LONG-VALLEY CALDERA TO THE M(W)=7.3 LANDERS, CALIFORNIA, EARTHQUAKE. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 100(B7), 12985-13005. 10.1029/95JB00860
  • PAUL, J, F BLUME, S JADE, V KUMAR, PS SWATHI, MB ANANDA, VK GAUR, R BURGMANN, R BILHAM, B NAMBOODRI and D MENCIN. (MAR 1995). MICROSTRAIN STABILITY OF PENINSULAR INDIA 1864-1994. PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-EARTH AND PLANETARY SCIENCES, 104(1), 131-146.
  • BILHAM, R. (25-Jul 1995). LOCATION AND MAGNITUDE OF THE 1833 NEPAL EARTHQUAKE AND ITS RELATION TO THE RUPTURE ZONES OF CONTIGUOUS GREAT HIMALAYAN EARTHQUAKES. CURRENT SCIENCE, 69(2), 101-128.
  • JACKSON, ME and R BILHAM. (15-Jun 1994). 1991-1992 GPS MEASUREMENTS ACROSS THE NEPAL HIMALAYA. GEOPHYSICAL RESEARCH LETTERS, 21(12), 1169-1172. 10.1029/94GL00917
  • BODIN, P and R BILHAM. (15-Nov 1994). 3D GEOMETRY OF THE STRAIN-FIELD AT TRANSFORM PLATE BOUNDARIES - IMPLICATIONS FOR SEISMIC RUPTURE. GEOPHYSICAL RESEARCH LETTERS, 21(23), 2523-2526. 10.1029/94GL02279
  • STURKELL, E, F SIGMUNDSSON, P EINARSSON and R BILHAM. (15-Jan 1994). STRAIN ACCUMULATION 1986-1992 ACROSS THE REYKJANES PENINSULA PLATE BOUNDARY, ICELAND, DETERMINED FROM GPS MEASUREMENTS. GEOPHYSICAL RESEARCH LETTERS, 21(2), 125-128. 10.1029/93GL03421
  • BEHR, J, R BILHAM, P BODIN and S GROSS. (JUN 1994). EUREKA-PEAK FAULT AFTERSLIP FOLLOWING THE 28 JUNE 1992 LANDERS EARTHQUAKE. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 84(3), 826-834.
  • BODIN, P, R BILHAM, J BEHR, J GOMBERG and KW HUDNUT. (JUN 1994). SLIP TRIGGERED ON SOUTHERN CALIFORNIA FAULTS BY THE 1992 JOSHUA-TREE, LANDERS, AND BIG-BEAR EARTHQUAKES. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 84(3), 806-816.
  • JACKSON, M and R BILHAM. (10-Jul 1994). CONSTRAINTS ON HIMALAYAN DEFORMATION INFERRED FROM VERTICAL VELOCITY-FIELDS IN NEPAL AND TIBET. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 99(B7), 13897-13912. 10.1029/94JB00714
  • LINDE, AT, IS SACKS, MJS JOHNSTON, DP HILL and RG BILHAM. (29-Sep 1994). INCREASED PRESSURE FROM RISING BUBBLES AS A MECHANISM FOR REMOTELY TRIGGERED SEISMICITY. NATURE, 371(6496), 408-410. 10.1038/371408a0
  • BILHAM, R. (OCT 1994). THE 1737 CALCUTTA EARTHQUAKE AND CYCLONE EVALUATED. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 84(5), 1650-1657.
  • SYLVESTER, AG, R BILHAM, M JACKSON and S BARRIENTOS. (10-Aug 1993). ASEISMIC GROWTH OF DURMID HILL, SOUTHEASTERNMOST SAN-ANDREAS FAULT, CALIFORNIA. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 98(B8), 14233-14243. 10.1029/93JB01028
  • BILHAM, R. (22-Oct 1993). BOREHOLE INCLINOMETER MONUMENT FOR MILLIMETER HORIZONTAL GEODETIC CONTROL ACCURACY. GEOPHYSICAL RESEARCH LETTERS, 20(20), 2159-2162. 10.1029/93GL02636
  • FOULGER, GR, G BEUTLER, R BILHAM, P EINARSSON, S FANKHAUSER, W GURTNER, U HUGENTOBLER, WJ MORGAN, M ROTHACHER, G THORBERGSSON and U WILD. (JUL 1993). THE ICELAND 1986 GPS GEODETIC SURVEY - TECTONIC GOALS AND DATA-PROCESSING RESULTS. BULLETIN GEODESIQUE, 67(3), 148-172. 10.1007/BF00806254
  • BILHAM, R and J BEHR. (JUN 1992). A 2-LAYER MODEL FOR ASEISMIC SLIP ON THE SUPERSTITION HILLS FAULT, CALIFORNIA. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 82(3), 1223-1235.
  • ASFAW, LM, R BILHAM, M JACKSON and P MOHR. (11-Jun 1992). RECENT INACTIVITY IN AFRICAN RIFT. NATURE, 357(6378), 447-447. 10.1038/357447a0
  • SIGMUNDSSON, F, P EINARSSON and R BILHAM. (24-Jul 1992). MAGMA CHAMBER DEFLATION RECORDED BY THE GLOBAL POSITIONING SYSTEM - THE HEKLA 1991 ERUPTION. GEOPHYSICAL RESEARCH LETTERS, 19(14), 1483-1486. 10.1029/92GL01636
  • JACKSON, M, S BARRIENTOS, R BILHAM, D KYESTHA and B SHRESTHA. (3-Aug 1992). UPLIFT IN THE NEPAL HIMALAYA REVEALED BY SPIRIT LEVELING. GEOPHYSICAL RESEARCH LETTERS, 19(15), 1539-1542. 10.1029/92GL01638
  • BILHAM, R and P BODIN. (9-Oct 1992). FAULT ZONE CONNECTIVITY - SLIP RATES ON FAULTS IN THE SAN-FRANCISCO BAY AREA, CALIFORNIA. SCIENCE, 258(5080), 281-284. 10.1126/science.258.5080.281
  • BILHAM, R. (FEB 1991). EARTHQUAKES AND SEA-LEVEL - SPACE AND TERRESTRIAL METROLOGY ON A CHANGING PLANET. REVIEWS OF GEOPHYSICS, 29(1), 1-29. 10.1029/90RG01205
  • BILHAM, R and S BARRIENTOS. (4-Apr 1991). SEA-LEVEL RISE AND EARTHQUAKES. NATURE, 350(6317), 386-386. 10.1038/350386a0
  • MARONE, CJ, CH SCHOLTZ and R BILHAM. (10-May 1991). ON THE MECHANICS OF EARTHQUAKE AFTERSLIP. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 96(B5), 8441-8452. 10.1029/91JB00275
  • BEHR, J, R BILHAM, P BODIN, RO BURFORD and R BURGMANN. (AUG 1990). ASEISMIC SLIP ON THE SAN-ANDREAS FAULT SOUTH OF LOMA-PRIETA. GEOPHYSICAL RESEARCH LETTERS, 17(9), 1445-1448. 10.1029/GL017i009p01445
  • HACKMAN, MC, GCP KING and R BILHAM. (10-Oct 1990). THE MECHANICS OF THE SOUTH ICELAND SEISMIC ZONE. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 95(B11), 17339-17351. 10.1029/JB095iB11p17339
  • BILHAM, R. (APR 1989). SURFACE SLIP SUBSEQUENT TO THE 24 NOVEMBER 1987 SUPERSTITION HILLS, CALIFORNIA, EARTHQUAKE MONITORED BY DIGITAL CREEPMETERS. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 79(2), 424-450.
  • BILHAM, R and G KING. (10-Aug 1989). THE MORPHOLOGY OF STRIKE-SLIP FAULTS - EXAMPLES FROM THE SAN-ANDREAS FAULT, CALIFORNIA. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 94(B8), 10204-10216. 10.1029/JB094iB08p10204
  • BILHAM, R. (15-Dec 1988). EARTHQUAKES AND URBAN-GROWTH. NATURE, 336(6200), 625-626. 10.1038/336625a0
  • BEAVAN, J, K HURST, R BILHAM and L SHENGOLD. (10-Aug 1986). A DENSELY SPACED ARRAY OF SEA-LEVEL MONITORS FOR THE DETECTION OF VERTICAL CRUSTAL DEFORMATION IN THE SHUMAGIN SEISMIC GAP, ALASKA. J GEOPHYS RES-SOLID EARTH PL, 91(B9), 9067-9080.
  • HURST, K and R BILHAM. (10-Aug 1986). HYDROSTATIC LEVELS IN PRECISION GEODESY AND CRUSTAL DEFORMATION MEASUREMENT. J GEOPHYS RES-SOLID EARTH PL, 91(B9), 9202-9216.
  • BILHAM, R and P WILLIAMS. (1985). SAWTOOTH SEGMENTATION AND DEFORMATION PROCESSES ON THE SOUTHERN SAN-ANDREAS FAULT, CALIFORNIA. Geophys. Res. Lett., 12(9), 557-560.
  • BILHAM, R, J BEAVAN, K EVANS and K HURST. (1985). CRUSTAL DEFORMATION METROLOGY AT LAMONT-DOHERTY GEOLOGICAL OBSERVATORY. EARTHQUAKE PREDICT RES, 3(4-Mar), 391-411.
  • BEAVAN, J, R BILHAM and K HURST. (1984). COHERENT TILT SIGNALS OBSERVED IN THE SHUMAGIN SEISMIC GAP - DETECTION OF TIME-DEPENDENT SUBDUCTION AT DEPTH. J. Geophys. Res., 89(NB6), 4478-4492.
  • WYATT, F, R BILHAM, J BEAVAN, AG SYLVESTER, T OWEN, A HARVEY, C MACDONALD, DD JACKSON and DC AGNEW. (1984). COMPARING TILTMETERS FOR CRUSTAL DEFORMATION MEASUREMENT - A PRELIMINARY-REPORT. Geophys. Res. Lett., 11(10), 963-966.
  • BILHAM, R. (1983). VERTICAL GEODESY WITHOUT SLOPE DEPENDENT ERRORS - PROPOSED HYDROSTATIC-PRESSURE LEVEL USING WATER AT 4-DEGREES-C. Tectonophysics, 97(4-Jan), 337-349.
  • BEAVAN, J, E HAUKSSON, SR MCNUTT, R BILHAM and KH JACOB. (1983). TILT AND SEISMICITY CHANGES IN THE SHUMAGIN SEISMIC GAP. Science, 222(4621), 322-325.
  • EVANS, R, J BEAVAN, R BILHAM and G KING. (1979). SURVEY OF EARTH STRAIN TIDES IN GREAT-BRITAIN. GEOPHYS J ROY ASTRON SOC, 57(1), 119-135.
  • BILHAM, RG and RJ BEAVAN. (1979). STRAINS AND TILTS ON CRUSTAL BLOCKS. TECTONOPHYSICS, 52(4-Jan), 121-138.
  • BERBERIAN, M, I ASUDEH, RG BILHAM, CH SCHOLZ and C SOUFLERIS. (1979). MECHANISM OF THE MAIN SHOCK AND THE AFTERSHOCK STUDY OF THE TABAS-E-GOLSHAN (IRAN) EARTHQUAKE OF SEPTEMBER 16, 1978 - PRELIMINARY-REPORT. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 69(6), 1851-1859.
  • BILHAM, R. (1977). SEA-LEVEL RECORDER FOR TECTONIC STUDIES. GEOPHYS J ROY ASTRON SOC, 48(3), 307-314.
  • BEAVAN, J and R BILHAM. (1977). THERMALLY INDUCED ERRORS IN FLUID TUBE TILTMETERS. J. Geophys. Res., 82(36), 5699-5704.
  • KING, G and R BILHAM. (1976). GEOPHYSICAL WIRE STRAINMETER. Bull. Seismol. Soc. Amer., 66(6), 2039-2047.
  • KING, GCP, RG BILHAM, JW CAMPBELL and DP MCKENZIE. (1975). DETECTION OF ELASTIC STRAINFIELDS CAUSED BY FAULT CREEP EVENTS IN IRAN. NATURE, 253(5491), 420-423.
  • GOODMAN, DJ, AJ ALLAN and RG BILHAM. (1975). WIRE STRAINMETERS ON ICE. NATURE, 255(5503), 45-46.
  • ITSUELI, UJ, RG BILHAM, NR GOULTY and GCP KING. (1975). TIDAL STRAIN ENHANCEMENT OBSERVED ACROSS A TUNNEL. GEOPHYSICAL JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY, 42(2), 555-564.
  • BILHAM, RG, GCP KING and D EMTER. (1974). KILOMETER AND CENTIMETER EARTH STRAINMETERS. NATURE, 249(5452), 25-26.
  • BILHAM, R, G KING and D MCKENZIE. (1974). INHOMOGENEOUS TIDAL STRAINS IN QUEENSBURY-TUNNEL, YORKSHIRE. GEOPHYS J ROY ASTRON SOC, 37(2), 217-226.
  • KING, GCP and RG BILHAM. (1973). TIDAL TILT MEASUREMENT IN EUROPE. NATURE, 243(5402), 74-75.
  • BILHAM, RG. (1973). LOCATION OF EARTH STRAIN INSTRUMENTATION. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 274(1239), 429-433.
  • KING, GCP and RG BILHAM. (1973). STRAIN MEASUREMENT INSTRUMENTATION AND TECHNIQUE. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 274(1239), 209-217.
  • BILHAM, R, D MCKENZIE, R EVANS, A LAWSON and G KING. (1972). EARTH STRAIN TIDES OBSERVED IN YORKSHIRE, ENGLAND WITH A SIMPLE WIRE STRAINMETER. GEOPHYS J ROY ASTRON SOC, 29(4), 473-&.