简介:Weemployedadouble-differencealgorithm(hypoDD)torelocateearthquakeswithintheregionboundedby66°E-78°Eand32°N-42°Nintheperiodof1964?2003reportedbytheInternationalSeismologicalCenter(ISC).Theimprovedhypocentrallocationsdelineateadouble-layeredWadati-BenioffzoneintheeasternHinduKushintermediateseismicbelt.Basedonthisfeatureandotherevidences,weproposethattheintermediate-depthearthquakesbeneaththePamir-HinduKushregionmayoccurintwocollidedsubductionzoneswithoppositedipdirections.