Analysis of Cimandiri Fault Mechanism Type Based on Strain Pattern from GPS Observations in the Year 2010 – 2017

2018 IEEE Asia-Pacific Conference on Geoscience, Electronics and Remote Sensing Technology (AGERS) Pub Date : 2018-09-01 DOI:10.1109/AGERS.2018.8554204

Intan Hairani Fitri, A. B. Setyadji, I. Meilano, Susilo

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Abstract

Cimandiri is an active fault located in the region of southern Sukabumi, West Java, that extends from Pelabuhan Ratu to Padalarang. Some researches done with the aim of defining the mechanism of Cimandiri Fault result in various outcomes. INA-CORS GPS observation data around the fault was processed using scientific software, GAMIT 10.6. The processing result in daily coordinates for each GPS site in ITRF2008 that were used to calculate velocity vector and strain around Cimandiri Fault. The results for principal strain around Segment I and II are dominated by both compression and extension, with most of the direction of principal strain axes are around 40°. While for Segment III, principal strain around the fault are much more dominated by compression and the direction is around 20°. According to the principal strain rate and velocity pattern around fault, Segment I and II of Cimandiri Fault have sinistral strike-slip mechanism, while Segment III of Cimandiri Fault has thrust mechanism

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基于2010 - 2017年GPS观测应变模式的Cimandiri断裂机制类型分析

Cimandiri是位于西爪哇苏卡布米南部地区的一个活动断层，从Pelabuhan Ratu延伸到Padalarang。一些旨在确定Cimandiri断裂机制的研究得出了不同的结果。采用科学软件GAMIT 10.6对故障周围的INA-CORS GPS观测数据进行处理。处理结果为ITRF2008中每个GPS站点的日坐标，用于计算Cimandiri断层周围的速度矢量和应变。第一段和第二段主应变以压缩和拉伸为主，主应变轴方向多在40°左右。而在第三段，断层周围主应变以压缩为主，方向在20°左右。根据断层周围主应变速率和速度模式，Cimandiri断裂一段和二段具有左旋走滑机制，Cimandiri断裂三段具有逆冲机制

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 IEEE Asia-Pacific Conference on Geoscience, Electronics and Remote Sensing Technology (AGERS)

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