论文标题
沿着北部和东安纳托利亚断层从INSAR和GPS数据推论
Distribution of interseismic coupling along the North and East Anatolian Faults inferred from InSAR and GPS data
论文作者
论文摘要
北安纳托利亚断层（NAF）造成了许多主要地震。经过数十年的静止，$ \ rm {M_W} $ 6.8Elazığestresquake（2020年1月24日）最近提醒我们，东安纳托利亚断层（EAF）也能够产生重大的地震。为了更好地估计与这两个断层相关的地震危害，我们共同反转干涉合成孔径雷达（INSAR）和GPS数据，以对沿北部和东部Anatolian断层东部的跨震动耦合的空间分布进行图像。我们在贝叶斯框架中执行反演，从而可以估计长期相对板运动和耦合的不确定性。我们发现，在NAF上，耦合高和深（0-20 km），在EAF上的异质和表面（0-5 km）。我们的模型预测，Elazığasheatquake释放了200至250年的积累时刻，这表明双年复发时间。
The North Anatolian Fault (NAF) has produced numerous major earthquakes. After decades of quiescence, the $\rm{M_w}$ 6.8 Elazığ earthquake (January 24, 2020) has recently reminded us that the East Anatolian Fault (EAF) is also capable of producing significant earthquakes. To better estimate the seismic hazard associated with these two faults, we jointly invert Interferometric Synthetic Aperture Radar (InSAR) and GPS data to image the spatial distribution of interseismic coupling along the eastern part of both the North and East Anatolian Faults. We perform the inversion in a Bayesian framework, enabling to estimate uncertainties on both long-term relative plate motion and coupling. We find that coupling is high and deep (0-20 km) on the NAF and heterogeneous and superficial (0-5 km) on the EAF. Our model predicts that the Elazığ earthquake released between 200 and 250 years of accumulated moment, suggesting a bi-centennial recurrence time.
