Seismicity and structure of Nazca Plate subduction zone in southern Peru
作者: Hobin LimYoungHee KimRobert W. ClaytonClifford H. Thurber
作者单位: 1School of Earth and Environmental Sciences, Seoul National University, Seoul, 08826, Republic of Korea
2Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
3Department of Geoscience, University of Wisconsin-Madison, Madison, WI 53706-1692, USA
刊名: Earth and Planetary Science Letters, 2018, Vol.498 , pp.334-347
来源数据库: Elsevier Journal
DOI: 10.1016/j.epsl.2018.07.014
关键词: SeismicitySubduction zone systemNazca PlateRelocationDouble-difference tomographySouthern Peru
原始语种摘要: Abstract(#br)We define subducting plate geometries in the Nazca subduction zone by (re)locating intra-slab earthquakes in southern Peru (14–18°S) and using previously published converted phase analysis results to clarify the slab geometry and inferred relationships to the seismicity. We also provide both P - and S -wave velocity models of the subducting Nazca Plate and mantle layer above the slab using double-difference tomography to understand upper-plate volcanism and subduction zone process. The double-difference constraints for determining the hypocenters and velocity model ensure high accuracy of the relative location of earthquakes with respect to velocity structure. The relocated seismicity shows a smooth contortion in the slab-dip transition zone for ∼400 km between the shallow...
全文获取路径: Elsevier  (合作)
影响因子:4.349 (2012)

  • subduction 俯冲
  • velocity 速度
  • southern 南边的
  • structure 构造
  • dipping 浸渍
  • seismicity 地震活动
  • converted 转[变]换
  • depth 
  • transition 转移
  • shallow 浅的