کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5781607 | 1636693 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Depth varying rupture properties during the 2015 Mw 7.8 Gorkha (Nepal) earthquake
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Depth varying rupture properties during the 2015 Mw 7.8 Gorkha (Nepal) earthquake Depth varying rupture properties during the 2015 Mw 7.8 Gorkha (Nepal) earthquake](/preview/png/5781607.png)
چکیده انگلیسی
On April 25th 2015, the Mw 7.8 Gorkha (Nepal) earthquake ruptured a portion of the Main Himalayan Thrust underlying Kathmandu and surrounding regions. We develop kinematic slip models of the Gorkha earthquake using both a regularized multi-time-window (MTW) approach and an unsmoothed Bayesian formulation, constrained by static and high rate GPS observations, synthetic aperture radar (SAR) offset images, interferometric SAR (InSAR), and teleseismic body wave records. These models indicate that Kathmandu is located near the updip limit of fault slip and approximately 20Â km south of the centroid of fault slip. Fault slip propagated unilaterally along-strike in an ESE direction for approximately 140Â km with a 60Â km cross-strike extent. The deeper portions of the fault are characterized by a larger ratio of high frequency (0.03-0.2Â Hz) to low frequency slip than the shallower portions. From both the MTW and Bayesian results, we can resolve depth variations in slip characteristics, with higher slip roughness, higher rupture velocity, longer rise time and higher complexity of subfault source time functions in the deeper extents of the rupture. The depth varying nature of rupture characteristics suggests that the up-dip portions are characterized by relatively continuous rupture, while the down-dip portions may be better characterized by a cascaded rupture. The rupture behavior and the tectonic setting indicate that the earthquake may have ruptured both fully seismically locked and a deeper transitional portions of the collision interface, analogous to what has been seen in major subduction zone earthquakes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tectonophysics - Volumes 714â715, 13 September 2017, Pages 44-54
Journal: Tectonophysics - Volumes 714â715, 13 September 2017, Pages 44-54
نویسندگان
Han Yue, Mark Simons, Zacharie Duputel, Junle Jiang, Eric Fielding, Cunren Liang, Susan Owen, Angelyn Moore, Bryan Riel, Jean Paul Ampuero, Sergey V. Samsonov,