Seismically reactivated Hattian slide in Kashmir, Northern Pakistan

Jean F. Schneider (1)

1 Institute of Applied Geology, IAG-BOKU

The Pakistan 2005 earthquake, of magnitude 7.6, caused severe damage on landscape and infrastructure, in addition to numerous casualties. The event reactivated Hattian Slide, creating a rock avalanche in a location where earlier mass movements had happened already, as indicated by satellite imagery and ground investigation. The slide originated on Dana Hill, in the upper catchment area of Hattian on Karli Stream, a tributary of Jhelum River, Pakistan, and buried the hamlet Dandbeh and several farms nearby. A natural dam accumulated, impounding two lakes, the larger one threatening parts of downstream Hattian Village with flooding. An access road and artificial spillways needed to be constructed in very short time to minimize the flooding risk. As shown by this example, when pointing out the risk of large-scale damage to population and infrastructure by way of hazard indication maps of seismically active regions, and preparing for alleviation of that risk, it is advisable to consider the complete Holocene history of the slopes involved.

Mots clés: Mass movements; Landslides; Seismic triggering; Kashmir earthquake; Landslide dam; Reservoir impounding

Jean F. Schneider. Seismically reactivated Hattian slide in Kashmir, Northern Pakistan. Journal of Seismology, 2008, 13 (3), pp.387-398. ⟨10.1007/s10950-008-9103-5⟩. ⟨hal-00478432⟩