Description
Indonesia is considered one of the zones prone to earthquakes and tsunamis due to its position in the boundary of 3 major tectonic plates, Indian-Australian, Eurasian, and Pacific. Currently, Indonesia has about 1,568 locations for seismic monitoring instruments, and it is supported by several tsunami monitoring. The instruments consist of 511 seismographs, 669 accelerographs, 400 intensity meters, four seismic boreholes (8 units), and 2 Seismic Health Monitors (12 units). However, monitoring subsurface disasters caused by non-tectonic earthquakes is not yet massively available. Indonesia has some locations with high levels of vulnerability to non-tectonic tsunamis, such as Semangka, Lampung, Pelabuhan Ratu, and Gorontalo Bay. Included active volcanoes in which eruption occurs to cause non-tectonic tsunamis, are Mount Anak Krakatau, Gamkonora, Ruang, Rokatenda, Ibu, Ile Lewotolok, and Lewotobi. Scientific analyst only refers based on infrasound sensors, I06AU, I07AU, I40PG, and I39PW. However, the long distances from the event location and several other factors potentially cause the information obtained to be not optimal and biased. Based on this reason, Indonesia urgently needs an infrasound station to monitor its potential for non-tectonic tsunamis. The recommended locations for installation are around the Sunda Strait and the Sea of Moluccas.
Keywords: seismic, tsunami, subsurface, infrasound, non-tectonic.
| [email protected] |
