Fault Distribution, Segmentation and Earthquake Generation Potential of the Philippine Fault in Eastern Mindanao, Philippines

Autor:	Jeffrey S. Perez, Mabelline T. Cahulogan, Hiroyuki Tsutsumi, Ma. Isabel T. Abigania, Desiderio P. Cabanlit, Takashi Nakata
Rok vydání:	2015
Předmět:	geography geography.geographical_feature_category business.industry Distribution (economics) Segmentation Paleoseismology Fault (geology) Safety Risk Reliability and Quality business Engineering (miscellaneous) Seismic hazard assessment Geology Seismology
Zdroj:	Journal of Disaster Research. 10:74-82
ISSN:	1883-8030 1881-2473
DOI:	10.20965/jdr.2015.p0074
Popis:	The 1,250-km-long, NNW-trending, arc-parallel Philippine fault, one of the world’s most active tectonic structures, traverses the Philippine archipelago and has been the source of surface-rupturing earthquakes during the last four centuries. In this paper, we will discuss Philippine fault distribution and segmentation in Mindanao Island by integrating detailed fault mapping together with new geological and paleoseismic data and the analysis of historical surface-rupturing earthquakes. Using geometric segmentation criteria, we have identified nine geometric segments separated by discontinuities such as en echelon steps, bends, changes in strike, gaps, steps and bifurcation in the surface trace. Fault segments ranges from 20 to 100 km in length and are capable of generating earthquakes ofMw6.6 toMw7.4. The results of our study have important implications for earthquake generation potential and seismic hazard assessment of the Philippine fault in Mindanao Island.
Databáze:	OpenAIRE
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