期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Improving Airgun Signal Detection with Small-Aperture Seismic Array in Yunnan 预览
1
作者 WANG Weijun ZHOU Qingyun +3 位作者 KOU Huadong LIU Guiping ZHU Hongbo YAN Kun 《中国地震研究:英文版》 CSCD 2019年第2期248-264,共17页
Repeating airgun sources are eco-friendly sources for monitoring the changes in the physical properties of subsurface mediums,but their signals decay quickly and are buried in the noises soon after traveling short dis... Repeating airgun sources are eco-friendly sources for monitoring the changes in the physical properties of subsurface mediums,but their signals decay quickly and are buried in the noises soon after traveling short distances.Stacking waveforms from different airgun shots recorded by a single seismic station(shot stacking)is the most popular technique to detect weak signals from noisy backgrounds,and has been widely used to process the data of Fixed Airgun Signal Transmission Stations(FASTS)in China.However,shot stacking sacrifices the time resolution in monitoring to recover a qualified airgun signal by stacking many shots at distance stations,and also suffers from persistent local noises.In this paper,we carried out several small-aperture seismic array experiments around the Binchuan FAST Station(BCFASTS)in Yunnan Province,China,and applied the array technique to improve airgun signal detection.The results show that seismic array processing combining with shot stacking can suppress seismic noises more efficiently,and provide better signal-to-noise ratio(SNR)and coherent airgun signals with less airgun shots.This work suggests that the array technique is a feasible and promising tool in FAST to increase the time resolution and reduce noise interference on routine monitoring. 展开更多
关键词 Airgun SIGNAL Detection Small-Aperture SEISMIC Array Binchuan Fixed Airgun SIGNAL Transmission Stations(BCFASTS)
在线阅读 免费下载
上一页 1 下一页 到第
使用帮助 返回顶部 意见反馈