MODEL-ZD9 TELLURIC EQUIPMENT
Thao Jianu;Su Mingda; Wang Yanqiong;Song Baochang;Zhang Xiaofan(Earthquake Research Institute of Lanzhou,SSB,Lanzhou 730000)
In this paper the technical indexes,principle,function of a new specialized electrotelluricmeasuring instrument(Medel-ZD9)developed by authors is introduced. This instrument canbe used for routine observation of earth electric field at field stations and to detect deep earthresistivity by using the tensor method. It can also be used in other cases where multi-channeldata collecting is required. The tests of various performances and long use in earthquake sitesshow that the instrument can meet the needs of observing the geoelectric field.