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هفتمین کنفرانس بین المللی زلزله شناسی و مهندسی زلزله
جزئیات رویداد
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همایش ، رویداد ، ژورنال
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  • application of pattern recognition techniques to long-term earthquake prediction in alborz region on iranian plate

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    • تاریخ ارائه: 1394/02/01
    • تاریخ انتشار در تی پی بین: 1394/02/01
    • تعداد بازدید: 629
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     pattern recognition was one of the first methods used in geophysical application and has found wide applications in seismology. this paper is presented seismic spatial patterns recognition of west alborz by using historical earthquake catalog data with data mining techniques. in this paper, clustering techniques are used to obtain patterns of model in behavior of seismic temporal data that can help to predict large earthquakes its future behavior by the past behavior of earthquake catalogs. this algorithm has the ability to learn new mapping for finding earthquake clustering to show all or some of the patterns before major earthquakes such as the seismic silence pattern and doughnut pattern, these patterns in different earthquake considerably change so unsupervised learning techniques is used. in this case study after identifying morpho-structural nodes in western alborz, earthquakes clusters studied and the event location of future large earthquakes has been identified by using kohonen self-organizing feature maps, the novelty of this work lies on discovering clustering-based patterns and the use of them as seismological precursor in iran iiees data. the results of the experiments show that recognition rates achieved with this system are much higher than those achieved when only the feature map is used the seismic silence and the doughnut pattern before large earthquakes.sofm model is a quite useful tool for statistical properties of earthquakes, for generating huge number of events required to cluster the earthquakes. figa shows a simple example about the capabilities of sofm in clustering. the input probability distribution contains continuous structures that are partially interleaved. clustering by sofm is based on continuous compact areas, and it thus easily finds the natural cluster boundary.

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