DOI: 10.1002/2015GL064325
论文题名: Fluid-faulting interactions: Fracture-mesh and fault-valve behavior in the February 2014 Mammoth Mountain, California, earthquake swarm
作者: Shelly D.R. ; Taira T. ; Prejean S.G. ; Hill D.P. ; Dreger D.S.
刊名: Geophysical Research Letters
ISSN: 0094-9231
EISSN: 1944-8962
出版年: 2015
卷: 42, 期: 14 起始页码: 5803
结束页码: 5812
语种: 英语
英文关键词: earthquake swarm
; fault valve
; fluids
; fracture mesh
; Mammoth Mountain
Scopus关键词: Faulting
; Fluids
; Fracture
; Geophysics
; Landforms
; Mesh generation
; Transport properties
; Coupled process
; Earthquake swarms
; Event detection
; Fault-valve
; Fluid pressure pulse
; Fluid transport
; High resolution
; Mammoth Mountain
; Earthquakes
; earthquake swarm
; faulting
; fluid dynamics
; fracture
; precision
; spatiotemporal analysis
; waveform analysis
; California
; Mammoth Mountain
; United States
英文摘要: Faulting and fluid transport in the subsurface are highly coupled processes, which may manifest seismically as earthquake swarms. A swarm in February 2014 beneath densely monitored Mammoth Mountain, California, provides an opportunity to witness these interactions in high resolution. Toward this goal, we employ massive waveform-correlation-based event detection and relative relocation, which quadruples the swarm catalog to more than 6000 earthquakes and produces high-precision locations even for very small events. The swarm's main seismic zone forms a distributed fracture mesh, with individual faults activated in short earthquake bursts. The largest event of the sequence, M 3.1, apparently acted as a fault valve and was followed by a distinct wave of earthquakes propagating ∼1km westward from the updip edge of rupture, 1-2h later. Late in the swarm, multiple small, shallower subsidiary faults activated with pronounced hypocenter migration, suggesting that a broader fluid pressure pulse propagated through the subsurface. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938970508&doi=10.1002%2f2015GL064325&partnerID=40&md5=10de95a9249dec17fd11d3c36a11fee6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8847
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Volcano Science Center, U.S. Geological Survey, Menlo Park, CA, United States
Recommended Citation:
Shelly D.R.,Taira T.,Prejean S.G.,et al. Fluid-faulting interactions: Fracture-mesh and fault-valve behavior in the February 2014 Mammoth Mountain, California, earthquake swarm[J]. Geophysical Research Letters,2015-01-01,42(14).