کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5781117 | 1635367 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tectonic characteristics of the Lishan Piedmont Fault in the SE Weihe Graben (central China), as revealed by the geomorphological and structural analyses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The fault kinematics, slip rate and paleoseismicity along the approximate EW-trending Lishan Piedmont Fault (LPF) in the SE Weihe Graben, central China have been determined. The results of geomorphological analysis, field investigations and radiocarbon (14C) age dating indicate that: (i) slope angles of the observed triangular facets cluster around 20°; (ii) empirical correlations yield a vertical slip rate (throw rate) of ~ 0.11-0.25 mm yrâ 1, which is lower than the neighboring active faults; (iii) the LPF is characterized by almost purely normal slip, and was active within the past ~ 18,000 yr. These findings can provide a basis for the assessment of seismic risk in and around the densely-populated city of Xi'an (an old capital of China). However, we suggest more precise constraints on the fault slip rate and detailed paleoseismological studies on the timing of the most recent earthquake and the repeat time of paleo-earthquakes are needed in order to better understand the seismogenic behaviors of the active LPF.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geomorphology - Volume 282, 1 April 2017, Pages 52-63
Journal: Geomorphology - Volume 282, 1 April 2017, Pages 52-63
نویسندگان
Gang Rao, Yali Cheng, Yangli Yu, Bing Yan, Aiming Lin,