GANGA 47th Issue | Page 3

The boundary region of the India and It has been observed that several large Eurasia plates has a history of large and valley-blocking landslides mostly comprise great earthquakes. Prior to April 25, four comparatively small rockfalls and debris events of M6 or larger magnitude had avalanches that have a significant local occurred within 250 km of this area over the impact and loss of life. The need to plan past century. One, a M 6.9 earthquake in measures to mitigate landslide deaths and August 1988, 140 km to the south-southeast disruption in the forthcoming monsoon of the May 12 event, caused close to 1500 season must remain a priority. Many more death. The largest, an M 8.0 event known as damaging landslides may occur in the 2015 the 1934 Nepal-Bihar earthquake, ruptured a monsoon, likely to start in late June, than large section of the fault to the south of this would be expected if a major earthquake had May 2015 event, and east of the April 2015 not occurred. main shock, in a similar location to the 1988 earthquake. It severely damaged Kathmandu, and is thought to have caused around 10,600 death. Prior to the 20th century, a large earthquake in 1833 is thought to have taken place near the same area as the April 25, event. Till date, close to hundred and more aftershocks of the Gorkha Hundreds of people might be missing in landslides, triggered by the devastating earthquake. The whole of Mailung settlement, which lies between Dandagaun and Haku VDCs in Rasuwa district were buried under landslide. Rescuers have fished out 12 bodies from the debris as of 10th May earthquake have taken place there. In the 2015. Locals said around 250 workers and first two hours after the May 12 event, six locals at the 60 megawatt Upper Trishuli further aftershocks have occurred, to the hill, a hydroelectricity project and on its southwest-to-southeast of that earthquake. access road have been buried in landslides. A number of major or disruptive landsliding has taken place followed by the earthquake approx. parallel to the transition between the Lesser and High Himalayas. This zone includes parts of the districts of Gorkha, Dhading, Nuwakot, Rasuwa