کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8908737 1636682 2018 34 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multivariate statistical analysis to investigate the subduction zone parameters favoring the occurrence of giant megathrust earthquakes
ترجمه فارسی عنوان
تجزیه و تحلیل آماری چند متغیره برای بررسی پارامترهای منطقه فرورانش که به دنبال وقوع زلزله های بزرگی می گویند
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی
The observed maximum magnitude of subduction megathrust earthquakes is highly variable worldwide. One key question is which conditions, if any, favor the occurrence of giant earthquakes (Mw ≥ 8.5). Here we carry out a multivariate statistical study in order to investigate the factors affecting the maximum magnitude of subduction megathrust earthquakes. We find that the trench-parallel extent of subduction zones and the thickness of trench sediments provide the largest discriminating capability between subduction zones that have experienced giant earthquakes and those having significantly lower maximum magnitude. Monte Carlo simulations show that the observed spatial distribution of giant earthquakes cannot be explained by pure chance to a statistically significant level. We suggest that the combination of a long subduction zone with thick trench sediments likely promotes a great lateral rupture propagation, characteristic of almost all giant earthquakes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tectonophysics - Volumes 728–729, 20 March 2018, Pages 92-103
نویسندگان
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