使用中国地震台网1970—2022年赤峰—通辽地区（116°—124°E，41°—46°N）地震目录，分别采用最大曲率法、拟合度检测法和震级—序号法计算研究区域不同时间段最小完整性震级Mc，计算结果基本相互吻合。在地震事件较少的情况下拟合度检测法结果偏大，最大曲率法计算结果整体看要小于其他两种方法。
Using the earthquake catalogue of Chifeng-Tongliao area (116°-124°E, 41°-46°N) of the China Earthquake Networks Center from 1970 to 2022, the minimum magnitude of completeness Mc of different time periods in the study area is calculated by the maximum curvature method, the goodness-of-fit test method and the magnitude-sequence-number method, and the three calculation methods are basically consistent in terms of calculation results. In the case of fewer earthquake events, the goodness-of-fit test method results are relatively large, and the maximum curvature method calculation results are generally smaller than the other two methods.
2023,44（6）: 32-36 收稿日期：2023-5-4
DOI：10.3969/j.issn.1003-3246.2023.06.005
基金项目：内蒙古自治区地震局局长基金（项目编号：2022JC09）
作者简介：范东海（1989—），男，助理工程师，主要从事地震监测和仪器运维工作。E-mail：631780094@qq.com
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