بررسي ساختار شكستگي سراب قنبر در جنوب شهر كرمانشاه با استفاده از روش رادار

Study of fractured Structure Ghanbar at south of Kerrnanshah GPRmethod

Radar method (GPR) is one of the electromagnetic methods to detect shallow depth of underground layers. Sarab E Ghanbar region which is situated at south of Kermanshah city is at thrusted Zagros region. At this region lime stone with different ages are adjacent to radiolarites sediments. Due to fractured Limestone and low permeability of radiolarites, study of radiolarites is important as the latter acts as a dam to water flow from lime stone. 100 MHZ unshielded antenna has been lIsed to a small part of 3 radiolarites to detect fractured and deformed layers. Depth of penetration of radar waves is 1m and their velocity is 0.069m/ns. Radargrams show the main fracture at 8m from the first point of the measurements. Deformed layers are located at different horizontal distances at maximum depth of 1.5m. Some radargrams show an anticline at 22m which is in agreement with field observation.