Relations between Some Horizontal-Component Ground-Motion Intensity Measures Used in Practice

被引:57
|
作者
Boore, David M. [1 ]
Kishida, Tadahiro [2 ]
机构
[1] US Geol Survey, 345 Middlefield Rd, Menlo Pk, CA 94025 USA
[2] Univ Calif Berkeley, Pacific Earthquake Engn Res Ctr, Berkeley, CA 94720 USA
关键词
CANTERBURY EARTHQUAKES; DIRECTIONALITY;
D O I
10.1785/0120160250
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Various measures using the two horizontal components of recorded ground motions have been used in a number of studies that derive ground-motion prediction equations and construct maps of shaking intensity. We update relations between a number of these measures, including those in Boore et al. (2006) and Boore (2010), using the large and carefully constructed global database of ground motions from crustal earthquakes in active tectonic regions developed as part of the Pacific Earthquake Engineering Research Center-Next Generation Attenuation-West2 project. The ratios from the expanded datasets generally agree to within a few percent of the previously published ratios. We also provide some ratios that were not considered before, some of which will be useful in applications such as constructing Shake-Maps. Finally, we compare two important ratios with those from a large central and eastern North American database and from many records from subduction earthquakes in Japan and Taiwan. In general, the ratios from these regions are within several percent of those from crustal earthquakes in active tectonic regions.
引用
收藏
页码:334 / 343
页数:10
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