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对发生在宁夏境内及邻区的地震,宁夏地震台网测定的震级与区外台网测定的震级有时相差较大。本文应用1982年至1986年间的124次地震,讨论了宁夏地震台网近震震级M_(LN)与甘肃省地震台网近震震级M_(LG)、面波震级M_(SB)、《中国地震台网观测报告》的面波震级M_(SB)的关系,以及宁夏地震台网震级与台网内15个台的震级关系,并用震级残差方法给出了适合于宁夏地区的区域起算函数和各台站校正值。
For the earthquakes occurring in the territory of Ningxia and its neighboring areas, the magnitudes measured by Ningxia Seismic Network sometimes differ greatly from those measured by extraterrestrial networks. In this paper, 124 earthquakes between 1982 and 1986 were used to discuss the near-earthquakes M_ (LN) of Ningxia seismic network and M_ (LG) and M_ (SB) of earthquakes of Gansu seismic network, (SB), and the magnitude relationship between Ningxia Seismic Station and the network of 15 stations in the network, and the region threshold function suitable for Ningxia region is given by magnitude residual method Each station correction value.