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首页> 外文会议>International Symposium on Earth Hazard and Disaster Mitigation >Strain Analyis in Banda Sea Using Grid Strain Based On GPS Observation
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Strain Analyis in Banda Sea Using Grid Strain Based On GPS Observation

机译：基于GPS观察的栅格菌株的Banda海中的应变分析

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摘要

Eastern Indonesia has very high deformation due to tectonic activity in triple junction area. Convergencing between plate in Eastern Indonesia trigger some microblocks. Tectonic block as one of deformation phenomenom due to the interaction of between plates can be understood by using strain analysis. Strain analysis shows the change of position, shape and dimension from an object. This research use 80 GPS from previous study by Koulali et al, (2015) and 7 continuous GPS in Bird's Head to calculate strain rates in order to find relation between tectonic activity and strain rates in Banda Sea, and to identify block boundary. The GPS data are calculated using GAMIT/GLOBK software to obtain time series in each station. Strain rates are calculated using softwae package named grid strain which calculate strain based on interpolation using discretized geodetic measurement resulting strain rates in grid system. The data distribution and algorithm in grid strain influence the result of strain rates from grid strain. The result from strain calculation is in ranges -16,421×l0-~8 to -0,194×10~(-8) for shortening parameter and l,653×10~(-8) to 18,92×10~(-8) for extension parameter. From strain analysis known that strain rates can identify tectonic activity but not accurately for block boundary. Banda Block, Timor Block, and Bird's Head Block has different strain pattern especially in their boundary. Timor and eastern part of Banda Block dominated by shortening according to the back arc located in there, meanwhile western part of Banda Block and mostly of Bird's Head dominated by very low shortening according to collision between Eurasia and Australia Plates. For further analysis need some additional data such as density of GPS sites, sesimicity, and gravity data.
机译：印尼东部具有很高的变形是由于三结区域构造活动。在印尼东部板之间Convergencing引发一些微块。由于板之间的相互作用的构造块作为变形phenomenom中的一个可以通过使用应变分析来理解。应变分析显示位置，形状和尺寸的从物体的变化。这项研究利用从先前的研究80个GPS通过Koulali等人（2015年）和鸟头7个连续GPS来计算应变率，以便找到在班达海构造活动和应变率之间的关系，并确定块边界。 GPS数据是使用GAMIT / GLOBK软件，以获得在每个站的时间序列计算的。应变速率使用命名格应变softwae包使用导致网格系统的应变率离散测地测量其计算应变基于内插计算。在网格的应变数据分配和算法影响从格应变的应变率的结果。从应变计算的结果是在范围-16,421×l0-〜8至-0,194×10〜（-8）缩短参数和升，653×10〜（-8）到18,92×10〜（-8）延期参数。从应变分析已知的应变率可以识别构造活动的但不是精确对块边界。邦达座帝座，和鸟头座具有特别是在他们的边界不同的应变方式。帝和班达座东部由根据设在那里的弧后，班达亚齐的座同时西部大部分的鸟头根据欧亚大陆和澳洲板之间的碰撞占主导地位非常低的缩短，缩短为主。用于进一步分析需要一些额外的数据，诸如GPS位点，sesimicity，和重力的数据密度。

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