Ground motion database for Lombok-Sumbawa back arc thrust in 2007-2021 period

Abstract

The Back Arc Thrust Zone in northern part of Lombok- Sumbawa region is considered as destructive earthquake source due to 5th August 2018 event which cause high loss in West Nusa Tenggara Province. Hence, development of ground motion is necessary in hazard assesment. We present a database of ground motion from accelerograph recordings, together with metadata on earthquake source parameter and site condition. We also conducted magnitudo moment conversion and hypocenter relocation to increase the data quality. The database includes 136 event that have occurred in The Back Arc Thrust area for the period 2007-2021. It consists of 281 recorded accelerograph from five sites. This database improves significantly the uniformly metadata for use in ground-motion prediction equation (GMPE) development and other engineering applications.