East Palu Valley flowslides induced by the 2018 M 7.5 Palu-Donggala earthquake

Field reconnaissance data from GEER investigation of the 2018 MW 7.5 Palu-Donggala earthquake

“…The data collected by the GEER team is available on DesignSafe [6] , and the findings of related research are presented by Mason et al. [1 , 8] and Gallant et al. [2] .…”

“…In addition, the displacement mapping provides a unique dataset for researchers who are calibrating and verifying simulation models of landslide displacements, or who are seeking a validation dataset for image correlation analysis (including machine learning routines). This dataset is associated with original research presented in “;East Palu Valley Flowslides Induced by the 2018 M W 7.5 Palu-Donggala Earthquake” [1] and also is the basis of research presented by Gallant et al. [2] .…”

“… The M w 7.5 Palu-Donggala earthquake occurred on 28 September 2018 and caused significant damage in Palu City and the surrounding Central Sulawesi region of Indonesia. The earthquake initiated a series of catastrophic landslides (classified as flowslides ) [1 , 2] , collapsed buildings, and generated tsunami waves that impacted Palu Bay's coast. The earthquake claimed over 4000 lives, making it the deadliest natural disaster of 2018.…”

Shortcut Faults and Lateral Spreading Activated in a Pull-Apart Basin by the 2018 Palu Earthquake, Central Sulawesi, Indonesia

“…The earthquake caused left-lateral displacements as great as about 6 m and vertical displacements of about 5 m at the surface [30][31][32][33]. Liquefactioninduced landslides within the Palu basin also caused significant damage [27][28][29].…”

“…However, there has been no opportunity to compare coseismic surface ruptures with the faults that constitute a pull-apart basin. In Sulawesi Island, Indonesia, a pull-apart basin is present near the city of Palu along the Palu-Koro fault (Figure 2), which ruptured during the Mw 7.5 earthquake on 28 September 2018 ('the 2018 earthquake' hereafter), causing extensive damage mainly in the Palu basin, the southward structural continuation of Palu Bay, due to tsunami waves and liquefaction landslides [27][28][29]. The earthquake produced distinct surface ruptures in the Palu basin [30][31][32][33], and many studies have used satellite and seismic data to estimate fault models and rupture propagation [34][35][36][37][38][39][40][41][42].…”