节点文献
乌鲁木齐地震台测定的面波震级和台基校正值
SURFACE WAVE MAGNITUDES AND CORRECTION VALUES FOR STATION BASEMENT DETERMINED BY THE URUMQI SEISMOSTATION
【摘要】 利用乌鲁木齐地震台1985、1986年SK中长周期地震仪记录到的279次和763长周期地震仪记录的385次世界各地地震事件(Ms≥4.0,6≥6.0°,h≥80km),计算得出乌鲁木齐台763仪面波震级的平均偏差八M=0.033,标准误差S=±0.211;SK仪面波震级的平均偏差凸M=0.021,标准误差S=±0.238。分析得出震级偏差与震中距离有关,计算了新的起算函数,求出厂部分区域震级偏差值。
【Abstract】 The Urumqi Seismostation had observed many earthquakes occurred in different regionsof the world during 1985 and 1986. In them there are 279 earthquakes recorded by SK medium-long period seismographs and 385 by 763 long period Seismographs. To use these data,Average deviation (aM)and standard error (S) of surface wave magnitude were calculated.For 763 seismograph, 6M~0. 033, S=±0. 211 for SK seismograph, M= 0. 021, S=±0. 238. It is considered that magnitude deviation is concerned with epicentral distance basedon above analyses. In addition, a new zero function was computed and the magnitude tieviations in some regions were obtained.Descriptors: Seismic wave; Surface wave: Earthquake parameter ;Magnitude; Epicentral distance; Seismostation Urumqi
- 【文献出处】 内陆地震 ,INLAND EARTHQUAKE , 编辑部邮箱 ,1997年01期
- 【分类号】P315
- 【被引频次】1
- 【下载频次】20