Determination of Temporal-Spatial Distribution of the Regional Minimum Magnitudes of Completeness: Application to the Longmenshan Fault Zonespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

• 责任者：Long Feng （School of Earth and Space Sciences ; USTC ; Hefei 230026 ; China） ; Wen Xueze
• 刊名：Earthquake
• 出版年：2009
• 卷期：29(3)
• 关键词：震级—频度比值 ; magnitude-frequency ratios ; 龙门山断裂带 ; Longmenshan Fault Zone
• 页码：p.27-36
• 图表：8 illus., 22 refs.
• 分类号：0500
• issnNo：ISSN1000-3274
• isbnNo：CN11-1893/P

In this paper, the goodness-of-fit test (GFT) method for estimating the minimum magnitude of completeness (MC) is introduced first and then applied to determine the temporal-spatial distribution of MC of the Longmenshan fault zone, space prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Sichuan Province, and its surrounding area. Finally, advantage and problems of the method in application are summarized and discussed. The study suggests that based on the assumption that the G-R relationship has the power-low distribution, the GFT method is used to estimate a minimum magnitude of completeness MC through fitting a G-R relationship for a set of observed data by adjusting various minimum magnitudes gradually from small to big ones and eventually taking that minimum magnitude when the fitted G-R relationship can match best the set of observed data to be the result.