DOI: 10.1007/s00531-015-1283-y
Scopus记录号: 2-s2.0-84949958000
论文题名: Geophysical characterization of buried active faults: the Concud Fault (Iberian Chain, NE Spain)
作者: Pueyo Anchuela Ó. ; Lafuente P. ; Arlegui L. ; Liesa C.L. ; Simón J.L.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2016
卷: 105, 期: 8 起始页码: 2221
结束页码: 2239
语种: 英语
英文关键词: Active fault
; EM induction
; Geophysical survey
; GPR
; Magnetometry
; Seismic hazard
; Trench
Scopus关键词: active fault
; anomaly
; electromagnetic method
; geophysical survey
; ground penetrating radar
; sedimentology
; seismic hazard
; trench
; Iberian Cordillera
; Spain
英文摘要:
The Concud Fault is a ~14-km-long active fault that extends close to Teruel, a city with about 35,000 inhabitants in the Iberian Range (NE Spain). It shows evidence of recurrent activity during Late Pleistocene time, posing a significant seismic hazard in an area of moderate-to-low tectonic rates. A geophysical survey was carried out along the mapped trace of the southern branch of the Concud Fault to evaluate the geophysical signature from the fault and the location of paleoseismic trenches. The survey identified a lineation of inverse magnetic dipoles at residual and vertical magnetic gradient, a local increase in apparent conductivity, and interruptions of the underground sediment structure along GPR profiles. The origin of these anomalies is due to lateral contrast between both fault blocks and the geophysical signature of Quaternary materials located above and directly south of the fault. The spatial distribution of anomalies was successfully used to locate suitable trench sites and to map non-exposed segments of the fault. The geophysical anomalies are related to the sedimentological characteristics and permeability differences of the deposits and to deformation related to fault activity. The results illustrate the usefulness of geophysics to detect and map non-exposed faults in areas of moderate-to-low tectonic activity where faults are often covered by recent pediments that obscure geological evidence of the most recent earthquakes. The results also highlight the importance of applying multiple geophysical techniques in defining the location of buried faults. © 2015, Springer-Verlag Berlin Heidelberg.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84949958000&doi=10.1007%2fs00531-015-1283-y&partnerID=40&md5=bffa213130896b5557064aceb9c343ad
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70097
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Departamento de Ciencias de la Tierra, Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza, Spain; Centro Uned-Calatayud, Avda. San Juan El Real, nº 1, Calatayud, Zaragoza, Spain
Recommended Citation:
Pueyo Anchuela Ó.,Lafuente P.,Arlegui L.,et al. Geophysical characterization of buried active faults: the Concud Fault (Iberian Chain, NE Spain)[J]. International Journal of Earth Sciences,2016-01-01,105(8)