By Jason R. Patton, Rick Wilson, Lori Dengler, Yvette LaDuke, and Kevin Miller
February 2019, EERI.
On 28 September 2018 an earthquake with magnitude (M) 7.5 occurred in the Sulawesi region of Indonesia. Minutes after the earthquake, a tsunami hit the coasts within Palu Bay. The tsunami, which was generated immediately after the earthquake, caused significant loss of life in the area. The tsunami was captured in a number of videos, was measured on tide gauges, and appeared to have run-up elevations up to 9 meters (the elevation of the ground surface at the position of maximum inundation distance). During the earthquake, landslides up to several square-kilometers in size were triggered by soil liquefaction along the floor of Palu Valley on gently sloping alluvial fans. There is also extensive evidence for landslides along the coastline of Palu Bay. All earthquake- and tsunami-related hazards contributed to the significant structure and infrastructure damage and casualties in the area.
Read the Report: EERI Preliminary Notes on Tsunami Information and Response: Tsunami Generated by Mw7.5 Sulawesi, Indonesia Earthquake on 28 September 2018Tsunami Generated by Mw7.5 Sulawesi, Indonesia Earthquake on 28 September 2018
