ON THE STABILITY OF SPAC AND LINEAR ARRAY METHODS
The modified SPAC methods such as 2sSPAC and linear array methods allow estimating shear wave structure by using only two sensors, but in these cases the instability problem of the spatial autocorrelation coefficient could arise in frequency range higher than 1Hz. We carried out observations in Tsukuba city, Japan, with four arrays with four sensors, as well as from four 25m linear arrays with two sensors, showed good stability of SPAC coefficient for 2-4, 5Hz frequency range.To check the influence of the anthropogenic sources on the results of microtremor array observation the arrays were deployed in different distances from the road passing near by.
SPAC linear array stability
S. Margaryan T. Yokoi
Senior Researcher, Laboratory of Applied Geology, Faculty of Geology, Yerevan State University, Arme Senior Research Scientist, Interational. Institute of Seismology and Earthquake Engineering BRI, Jap
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12(万方平台首次上网日期,不代表论文的发表时间)