Study on Various Fault Slip Behavior and Frictional Properties on Subducting Plates Based on Geodetic Data
Study on Various Fault Slip Behavior and Frictional Properties on Subducting Plates Based on Geodetic Data
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基于大地测量数据的俯冲板块上各类断层滑动行为及摩擦特性研究
DOI：
10.11366/sokuchi.68.14
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发表时间：
2022
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通讯作者：
加納 将行
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作者：
中山雅晴;大矢浩代;土屋史紀;塩川和夫;中田裕之;Yamamoto K. Okuno J. Doi K. Fukuda Y.;加納 将行
密集的大地测量观测网络有助于观测各种不同时间尺度的断层滑动，包括同震滑动、慢滑动事件、后滑动和稳定滑动。这些滑移行为可能是由于不均匀的物理性能，特别是摩擦性能，沿沿着板界面。为了理解和预测这种基于大地测量数据分析、数值模拟和数据同化的断层滑动行为，我进行了一系列研究。本文简要地总结了我在2003年十胜冲余滑的情况下估计摩擦性质和预测断层滑动的数据同化，以及与日本西南部预期地震有关的慢滑动事件的大地测量数据分析方面的工作。
Dense geodetic observation networks have contributed to observing a wide variety of fault slips with different time scales including coseismic slips, slow slip events, afterslips, and stable slips. These slip behaviors may be a result of heterogeneous physical properties, especially frictional properties, along the plate interface. I have conducted a series of studies for understanding and predicting such various fault slip behavior based on geodetic data analysis, numerical simulation, and data assimilation. This article briefly summarizes my works on data assimilation of estimating frictional properties and predicting fault slip in the case of the 2003 Tokachi-oki afterslip, and geodetic data analysis on slow slip events concerning anticipated earthquakes in southwest Japan.