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Seismic assessment of the Weihe Graben, central China: Insights from geomorphological analyses and Be-10-derived catchment denudation rates
He, Chuanqi1,2; Yang, Ci-Jian2; Rao, Gang1; Yuan, Xiao-Ping2; Roda-Boluda, Duna C.2; Cheng, Yali1; Yang, Rong1; Zhang, Li3,4; Yao, Qi5
通讯作者Rao, Gang(raogang@zju.edu.cn)
2020-06-15
发表期刊GEOMORPHOLOGY
ISSN0169-555X
卷号359页码:9
摘要The tectonic activity and potential for linkage of adjacent active faults are crucial for seismic assessment. As the two largest faults that bound the Weihe Graben (central China), the Qinling Northern Piedmont Fault (QNF, similar to 200 km) and the Huashan Piedmont Fault (HPF, similar to 150 km) are mainly responsible for seismic risk in this densely-populated area, where the 1556 M 8.5 Huaxian earthquake occurred with 830,000 fatalities. However, their tectonic activity and the degree of interaction remain poorly constrained, hampering an adequate seismic risk assessment of the Weihe Graben. Here, we integrate 23 new Be-10-derived catchment-averaged denudation rates of similar to 0.06-0.32 mm/yr with topographic metrics to evaluate the seismic risk. The results demonstrate that the landscape of the Qinling and Huashan Mountains is in transient state in response to the tectonic perturbations of the QNF and the HPF, with tectonic knickpoints formed along main streams and tributaries, and widespread unstable drainage divides. These two faults have comparable tectonic activity, and are potentially capable of generating earthquakes with the maximum magnitude of M-w similar to 7.7-7.9. Moreover, they have likely started linking, posing a greater seismic risk than previously estimated. (C) 2020 Elsevier B.V. All rights reserved.
关键词Topographic indices Be-10-derived denudation rates Active normal faults Seismic risk Weihe Graben Central China
DOI10.1016/j.geomorph.2020.107151
关键词[WOS]ACTIVE NORMAL FAULTS ; LATE QUATERNARY ACTIVITY ; LAZIO-ABRUZZO APENNINES ; BE-10 EROSION RATES ; ROCK-UPLIFT RATES ; PIEDMONT FAULT ; LANDSCAPE RESPONSE ; NUCLIDE PRODUCTION ; CHANNEL STEEPNESS ; RUPTURE LENGTH
收录类别SCI ; SCI
语种英语
资助项目National Natural Science Foundation of China[41502203] ; National Natural Science Foundation of China[41602210] ; National Natural Science Foundation of China[41602195] ; Research Funding of School of Earth Sciences at Zhejiang University[2019QNA3015] ; National Science and Technology Major Project of China[2017ZX05008-001]
WOS研究方向Physical Geography ; Geology
项目资助者National Natural Science Foundation of China ; Research Funding of School of Earth Sciences at Zhejiang University ; National Science and Technology Major Project of China
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号WOS:000532096300011
出版者ELSEVIER
引用统计
被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/13965
专题加速器质谱中心
通讯作者Rao, Gang
作者单位1.Zhejiang Univ, Sch Earth Sci, Hangzhou 310027, Peoples R China
2.German Res Ctr Geosci GFZ, D-14473 Potsdam, Germany
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
4.Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian 710061, Peoples R China
5.China Earthquake Networks Ctr, Beijing 100045, Peoples R China
推荐引用方式
GB/T 7714
He, Chuanqi,Yang, Ci-Jian,Rao, Gang,et al. Seismic assessment of the Weihe Graben, central China: Insights from geomorphological analyses and Be-10-derived catchment denudation rates[J]. GEOMORPHOLOGY,2020,359:9.
APA He, Chuanqi.,Yang, Ci-Jian.,Rao, Gang.,Yuan, Xiao-Ping.,Roda-Boluda, Duna C..,...&Yao, Qi.(2020).Seismic assessment of the Weihe Graben, central China: Insights from geomorphological analyses and Be-10-derived catchment denudation rates.GEOMORPHOLOGY,359,9.
MLA He, Chuanqi,et al."Seismic assessment of the Weihe Graben, central China: Insights from geomorphological analyses and Be-10-derived catchment denudation rates".GEOMORPHOLOGY 359(2020):9.
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