Figure 7

Observations and model results related to the 1697 CE. Sadiya earthquake of a magnitude of 7.9 ± 0.2. Surface rupture information from paleoseismological studies: Him: Himebasti (this study), Nig: Niglok⁴⁷, sites with no observed seventeenth-century surface rupture, according to Kumar et al.¹³ and Priyanka et al.¹⁷. Na Nameri, Har Harmutty, and Pa Pasighat. Intensity observations are described in the text: Sa Sadiya, Ba Barnadi Bridge. Possible loci of hypocenters as constrained here are shown for the M7.7 and M8.1 scenarios (purple contours; see text for details). Red star and blue circle, respectively, indicate the location of the 1950 Tibet-Assam earthquake and its aftershocks of Mw > 6, HFT Himalayan Frontal Thrust, MT Mishmi thrust, NT Naga Thrust and MA Manabhum Anticline. Map was prepared in Arc GIS v10.3 using SRTM GTOPO 30 m imagery available at http://glcfapp.glcf.umd.edu/data/srtm/description.shtml.