ESTIMASI KEDALAMAN SESAR SORONG MENGGUNAKAN METODE DOUBLE DIFFERENCE
Keywords:
fault sorong, hypocenter relocation, double difference methodAbstract
Papua is a region with a high level of seismicity caused by complex tectonic activity. There are several active faults in Papua and recorded a number of seismic history in the region, one of them is Sesar Sorong. To pass the analysis of Sorong Fault depth estimation, the accuracy of the hypocenter position is required. One method to relocate the hypocenter is the double difference method, hypocenter relocation by double difference method is expected to improve the accuracy of the hypocenter position. The principle of the double difference method is the residual time of the observed travel time and the calculation results between two adjacent earthquake events at the same recording station, provided that the distance between events must be closer than the event distance to the recording station. Data on the earthquake used as many as 2,374 events from the BMKG catalog recorded on 15 stations INA-Tews. Based on the results of the analysis of the Papua region faults, it was found that the North Sorong Fault (3-35 km), West Sorong Fault (10-38 km), and East Sorong Fault (3-40 km) were classified into shallow faults because of the depth of <60 km. The relocation result using doule difference method is quite effective because it shows the improvement of quality when viewed from residual distribution obtained after relocation compared to residual before relocation.
Downloads
Published
How to Cite
Issue
Section
License
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.