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为了了解泉州台基式仪测定面波震级所存在的偏差,本文选取了泉州台基式仪记录到的715个Ms≥4.0的地震以及泉州台和北京台基式仪共同记录到的315个Ms≥4.5的地震,比较《中国台网观测报告》中有关参数,考虑观测误差,地壳厚度,区域构造等因素对震级偏差的影响,分析偏差值与震中距、方位、震级,周期之间的关系,并求出泉州台对全国台网面波平均震级的偏差值和地区校正值,泉州台相对于北京台的台基校正值和地区校正值,以及泉州台的面波震级起算函数。
In order to know the deviation of surface wave magnitude of Quanzhou Taiji instrument, this paper selected 715 Ms ≥ 4.0 earthquakes recorded by Quanzhou Taiji instrument and 315 Ms together recorded by Quanzhou Taiji and Beijing Taiji instrument ≥4.5 earthquakes, compare the relevant parameters in the “China Taiwan Network Observation Report”, consider the impact of observational error, crustal thickness and regional structure on the magnitude deviation, and analyze the relationship between the deviation value and epicentral distance, azimuth, magnitude and period , And find out the deviation value and regional correction value of Quanzhou station to the average magnitude of the national network surficial wave in Taiwan, the station-based correction value of Quanzhou station relative to Beijing station and the regional correction value, and the surface wave magnitude of Quanzhou station.