Seismic noise test analysis for Lembang active fault observatory.

The Lembang Fault, which extends for more than 20 km, passes through a relatively dense to moderate settlement area, from Padalarang at the western end, across Ngamprah, Cimahi, and Lembang to the foot of Mount Manglayang. The threat of earthquake hazards that may cause from this fault is still unclear. Fault line drawing based on morphology on the surface does not provide much information about the probability of a fault being active or not. However, several low-magnitude earthquakes (M<5) were recorded by the earthquake catalog from the Indonesian Agency for Meteorological, Climatological, and Geophysics (BMKG). Even some low-energy earthquakes can damage the houses of residents around the epicenter. Therefore, it is important to monitor seismic activity at close range. The information will be very helpful in preparing hazard level maps, risk assessments, and other mitigation efforts. Four stations are needed to create a seismic network, with data sent directly by telemetry to the BRIN data center at the Cisitu Office. In the preparation stage of installment, analyses of noise tests were conducted at three stations, namely in Tahura, Cipada Village, and the BPBD Office of West Bandung Regency. The result indicated the feasibility of the location as permanent stations for seismic monitoring. [ABSTRACT FROM AUTHOR]