Abstract:Microseisms caused by the landslide deformation are called slidequakes,which are the response of unstable areas on the landslide to external environmental factors. Analyzing the seismological properties of slidequakes helps to understand the dynamics of landslides,to analyze landslide stability and to prevent potential disasters. The seismometers deployed on the landslide can record the microseisms related to the deformation of the landslide along with some human activity signals. However,events generated by human activities on landslides pose challenges for slidequake detection. The Suopo landslide is located at the end of the Houhouyan Reservoir on the left bank of the Dadu River in Danba County,Sichuan Province,where is famous for ancient blockhouses in Danba County. In recent years,landslide disasters have occurred frequently on Suopo landslide. So the stability of Suopo landslide is key to the protection of the ancient blockhouses and the determination of water level of local reservoirs. In order to monitor the microseismic signal generated by the local rupture of the landslide,we deployed 34 three-component short-period seismometers on the landslide from February to March 2017. Based on the signal arrival time and waveform characteristics several types of template events are determined firstly,then the sliding time window cross-correlation method is used to detect microseismic events,and the events with high signal-to-noise ratio are located. According to the location and time information of the event,we find that there exist certain differences in the wave velocity structure of the shallow sedimentary layer between the east and the west of the landslide,indicating the lateral unevenness of the material distribution in the shallow sedimentary layer of the landslide. Based on the time and waveform characteristics of these events,we believe that in addition to slidequakes,there are also vibration events caused by fireworks on the Suopo landslide. Our results provide a reference for the detection of slidequakes and the inversion of shallow structures of landslides.