By H. Benjamin Mason, Aaron P. Gallant, Daniel Hutabarat, Jack Montgomery, A. Nicole Reed, Joseph Wartman. Contributors: Masyhur Irsyam (Indonesian team leader), Widjojo Prakoso, Didiek Djarwadi, Dandung Harnanto, Idrus Alatas, Paulus Rahardjo, Pintor Simatupang, Aksan Kawanda, Rahma Hanifa.
April 2019, Geotechnical Extreme Events Reconnaissance Association (GEER)
The Mw 7.5 Palu earthquake occurred on September 28, 2019 at 6:02 p.m. local time caused significant structural and geotechnical damage in Central Sulawesi. Much of the damage along the coastal areas was caused by the tsunami. Details of the damage caused by the tsunami are described by Robertson et al. (2019) and Yalciner et al. (2018). Outside of the coastal areas, damage was primarily caused by flowslides, which occurred along the margins of the Palu Basin. All of the flowslides, with the exception of Balaroa, occurred near an irrigation canal, which provides water for irrigating rice fields. Three of these flowslides occurred within a zone of large ground deformation that extended for more than 6 km south of the Palu Airport.
Click here to go to the GEER 2018 Palu earthquake and tsunami website
Read the Report: Geotechnical Reconnaissance: The 28 September 2018 M7.5 Palu-Donggala, Indonesia Earthquake (9 MB PDF)
