1. Fault displacement from Landsat 8 pre- and post-earthquake image differencing and initial field observations of the surface rupture of the M W 7.7 Awaran earthquake of 24 September 2013 Southwestern Pakistan M 7.7 Earthquake of 24 Sept. 2013 24 February 2014 Kenneth W. Hudnut (1), Shuhab D. Khan (2), Francois Ayoub (3), Sinan Akciz (4), Din M. Kakar (5), MohibUllah Baloch (5), Muhammad Shafeh (5), Abdul S. Khan (6) 1) U.S. Geological Survey, 525 S. Wilson Ave., Pasadena, California 2) Univ. of Houston, Houston, Texas 3) Tectonics Observatory, Department of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 4) Univ. of California, Los Angeles 5) Dept. of Geology, University of Balochistan 6) Center of Excellence in Mineralogy, University of Balochistan

2. Damage in Awaran >30 villages damaged; >800 fatalities; >20,000 houses collapsed SW Pakistan; Awaran, Balochistan M W 7.7 Earthquake of 24 Sept. 2013

5. Landsat 8 COSI-Corr Results Courtesy of Francois Ayoub (Caltech) Initial ‘raw’ N-S difference image from COSI-Corr with v. minor adjustments (georegist’n is excellent) Landsat 8 185 km wide swath, nearly perfect timing and location & high quality geometry of sensor; very nice synoptic overview of rupture. USGS makes all data openly available.

6. Landsat 8 COSI-Corr Results Courtesy of Francois Ayoub (Caltech)

7. Landsat 8 COSI-Corr Results slip distribution curve, based on F. Ayoub’s COSI-Corr v.2 results SWNE slip (meters) distance from SW end (kilometers) epicenter - bi-lateral, with most energetic rupture (big slip) towards the SW - not a 45° dipping fault, nearly pure lateral slip, & indication of very large slip (from imagery)

8. Landsat 8 COSI-Corr Results

10. field photos and observations Dandar localities

11. field photos and observations

29. Ken Hudnut hudnut@usgs.gov (626)672-6295 Questions? Special thanks to USAID and Prof. Abdul S. Khan and his students of the University of Balochistan: Din M. Kakar MohibUllah Baloch Muhammad Shafeh Pakistan - U.S. Science and Technology Cooperation Program