Multiple seismological evidences of basin effects revealed by Array of Binchuan(ABC), northwest Yunnan, China
作者：Yihe Xu,Baoshan Wang,Weitao Wang,Bo Zhang,Tianwei Sun
摘要：Dense array seismology, which is characterized by large number, densely deployed autonomous geophone/seismographs, has received great concerns worldwide recently, especially after the great success of dense array in Long Beach. One of the biggest curiosity is that if the great success in Long Beach is replicable in China. Hence, we analyze the seismic records from a dense array in Binchuan basin, Yunnan province, which consists of three-component short-period seismographs of three most common domestic models. The Binchuan basin is located near the intersection between the Chenghai-Binchuan fault and the Red River fault,with the latter being the major fault accommodating significant tectonic deformation resulting from eastern extrusion of the Tibetan plateau. Both faults pose serious seismic threats to local residents in Binchuan basin. Basinrange differences, faults, local earthquakes, and a Fixed Airgun Seismic Transmitting Station(FASTS), make the Binchuan basin a perfect experiment site for dense array experiment. The array is named Array of Binchuan(ABC)and the main target is imaging the shallow crustal structure,especially the structure of the basin. To examine the monitoring capability of ABC, we analyze the seismograms to check if they can reveal the basin, the most significant geological feature in the area. Power spectral density analysis,travel time and amplitude analysis of FASTS signals, and amplitude analysis of earthquakes and noise cross-correlation functions are used in the analysis. All the results show correlation with the basin and clear difference between basin and non-basin area. Therefore, the preliminary results support that the ABC has the potential to provide constraints on local structures.
发文机构：Key Laboratory of Seismic Observation and Geophysical Imaging School of Earth Sciences and Engineering School of Earth and Space Sciences
关键词：ARRAYofBinchuanDENSEARRAYBASINeffects
分类号： P315.7[天文地球—地震学][天文地球—固体地球物理学][天文地球—地球物理学]
- Shallow velocity structure of the Luoyang basin derived from dense array observations of urban ambient noise
- Multiple seismological evidences of basin effects revealed by Array of Binchuan(ABC), northwest Yunnan, China
- Pattern recognition of seismogenic nodes using Kohonen self- organizing map： example in west and south west of Alborz region in Iran
- Seismic hazard assessment of Western Coastal Province of Saudi Arabia： deterministic approach
- Estimating the site effects in Luoyang basin using horizontal-to-vertical spectral ratio method from a short-period dense array
- Seismic detections of the 15 February 2013 Chelyabinsk meteor from the dense ChinArray
- Using large dynamite shots to image the structure of the Moho from deep seismic reflection experiment between the Sichuan basin and Qinling orogen
- A practical approach for seismic risk assessment of underground structures:A case study of Iranian subway tunnels
- Cumulative damage effects of mainshock-aftershock sequences on RC-frame structures
- Preface to the special issue on electromagnetic phenomena related to seismic and volcanic activities from EMSEV in 2016