jgg     2015 35 (5):  840-843    ISSN: 0412-1961  CN: 21-1139/TG The Structural Characteristics of Shallow Strata and Shear Wave  Velocity in Changzhi Urban District 1 Changzhi Digital Seismic Network, 135 Xinying Road，Changzhi 046000, China 2 Geophysical Exploration Center，CEA, 75 Wenhua Road，Zhengzhou 450002, China 3 Lanzhou Institute of Seismology，CEA, 450 West-Donggan Road，Lanzhou 730000, China 4 Earthquake Administration of Changzhi, 135 Xinying Road，Changzhi 046000, China Received: 2014-06-24  Revised: null  Online: 2015-10-10 Supporting info