Comparison tomography relocation hypocenter grid search and guided grid search method in Java island

8th International Conference on Physics and its Applications

Nurdian, S.W.^1 ; Adu, N.^1 ; Palupi, I.R.^1 ; Raharjo, W.^1

Geophysical Engineering, Universitas Pembangunan Nasional Veteran Yogyakarta, Jln. SWK 104, Condongcatur, Sleman Yogyakarta, Indonesia^1

关键词: Broad areas;    Earthquake data;    Geological research;    Grid search;    Grid-search method;    Inversion process;    P waves;    Velocity variations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/776/1/012113/pdf
DOI  :  10.1088/1742-6596/776/1/012113

来源: IOP

【 摘 要 】

The main data in this research is earthquake data recorded from 1952 to 2012 with 9162 P wave and 2426 events are recorded by 30 stations located around Java island. Relocation hypocenter processed using grid search and guidded grid search method. Then the result of relocation hypocenter become input for tomography pseudo bending inversion process. It can be used to identification the velocity distribution in subsurface. The result of relocation hypocenter by grid search and guided grid search method after tomography process shown in locally and globally. In locally area grid search method result is better than guided grid search according to geological reseach area. But in globally area the result of guided grid search method is better for a broad area because the velocity variation is more diverse than the other one and in accordance with local geological research conditions.