地震学报（英文版）2006，Vol.19Issue(1)：1-7,7.
Comparison between earthquake magnitudes determined by China seismograph network and US seismograph network (Ⅱ):Surface wave magnitude
Comparison between earthquake magnitudes determined by China seismograph network and US seismograph network (Ⅱ):Surface wave magnitude
摘要
Abstract
By using orthogonal regression method, a systematic comparison is made between surface wave magnitudes determined by Institute of Geophysics of China Earthquake Administration (IGCEA) and National Earthquake Information Center of US Geological Survey (USGS/NEIC) on the basis of observation data collected by the two institutions between 1983 and 2004. A formula is obtained which reveals the relationship between surface wave magnitudes determined by China seismograph network and US seismograph network. The result shows that, as different calculation formulae and observational instruments are used, surface wave magnitude determined by IGCEA is generally greater by 0.2 than that determined by NEIC: for M=3.5～4.5 earthquakes, it is greater by 0.3;for M=5.0～6.5 earthquakes, it is greater by 0.2;and for M≥7.0 earthquakes, it is greater by no more than 0.1.关键词
local earthquake magnitude/surface wave magnitude/body wave magnitudeKey words
local earthquake magnitude/surface wave magnitude/body wave magnitude分类
天文与地球科学引用本文复制引用
..Comparison between earthquake magnitudes determined by China seismograph network and US seismograph network (Ⅱ):Surface wave magnitude[J].地震学报（英文版）,2006,19(1):1-7,7.基金项目
Project "Seismic Data Share" from China Ministry of Science and Technology.Contribution No. 06FE3004, Institute of Geophysics, China Earthquake Administration. （）
