Exploring the association between the occurrence of earthquakes and the geologic-tectonic variables in the Red Sea using logistic regression and GIS

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• 作者：Khalid Al-Ahmadi (1)
  Sharaf Al-Ahmadi (2)
  Abdullah Al-Amri (3)
  
• 关键词：Earthquakes ; GIS ; Logistic regression ; Red Sea
• 刊名：Arabian Journal of Geosciences
• 出版年：2014
• 出版时间：September 2014
• 年：2014
• 卷：7
• 期：9
• 页码：3871-3879
• 全文大小：1,771 KB
• 参考文献：1. Al-Ahmadi K, Al-Amri A, See L (2013) A spatial statistical analysis of the occurrence of earthquakes along the Red Sea floor spreading: clusters of seismicity. Arab J Geosci. doi:10.1007/s12517-013-0974-6
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• 作者单位：Khalid Al-Ahmadi (1)
  Sharaf Al-Ahmadi (2)
  Abdullah Al-Amri (3)
  
  1. King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
  2. Taibah University, Madinah, Saudi Arabia
  3. King Saud University, Riyadh, Saudi Arabia
  
• ISSN：1866-7538

文摘

Al-Ahmadi et al. (Arab J Geosci doi:10.1007/s12517-013-0974-6, 2013) applied spatial pattern analysis techniques to a seismic data catalogue of earthquakes beneath the Red Sea in order to explore and detect global and local spatial patterns in the occurrence of earthquakes over the years from 1900 to 2009 using a geographical information system (GIS). They found that the techniques of spatial pattern analysis that they applied could detect global and local clusters and broader spatial patterns in the occurrence of earthquakes and concluded that earthquakes with higher magnitudes were notably concentrated beneath the central and southern areas of the Red Sea, while earthquakes with low and moderate magnitudes were concentrated beneath the northern area of the Red Sea. The aim of this paper is to report on the application of logistic regression models to explore the associations between the likelihood of the occurrence of an earthquake beneath the Red Sea and four selected variables, namely: (1) proximity to the boundary of the African–Arabian plates, (2) proximity to transform faults, (3) proximity to the mid-Red Sea ridge and (4) the stage of rift evolution. The study was undertaken to evaluate the potential of logistic regression modelling for research exploring potential associations between earthquakes and geological and tectonic variables. The results revealed that none of the assumptions underpinning the logistic regression models had been violated for the three logistic regression models that were used in this research. The authors inferred that the occurrence of the earthquakes beneath the Red Sea was statistically significantly associated with the proximity to the African–Arabian plate boundary. We concluded that earthquakes of moderate magnitudes occurred in the zone which represents the late evolutionary stage of the Red Sea rift, including the transition zone beneath the central area and the late-stage continental rift zone beneath the northern area of the Red Sea. In contrast, earthquakes with high magnitudes tended to occur in close proximity to the mid-ridges of the Red Sea.