Estimation of b-value without levels of completeness (MC)
عنوان دوره: نوزدهمین کنفرانس ژئوفیزیک ایران
کد مقاله : 1673-NIGS
نویسندگان
1گروه زلزله شناسی، موسسه ژئوفیزیک، دانشگاه تهران، تهران، ایران
2Department of Earth Sciences, University of Western Ontario, London, Canada
چکیده
One of the challenges of estimating the Gutenberg–Richter b-value is to determine the levels of completeness of earthquakes (MC) with numerous methods, and their difficulties. In this research we provided a de-clustered and homogeneous earthquake catalog to estimate the b-value for five major seismotectonic provinces of Iran using a procedure without assumptions on levels of completeness. Comparison of the results of this study with results from previous methods that required determination of MC indicate the success of the method. Comparison of the estimated Gutenberg–Richter b-values from recorded earthquakes in major seismotectonic provinces of Iran with those obtained from previous works done with other methods show that estimation of b-value using the method without levels of completeness (MC) has been successful. This method can reduce time duration for evaluation of seismicity parameters.
کلیدواژه ها
Seismicity parameters؛ Level of Completeness (MC)؛ b-value؛ Seismotectonic provinces؛ Maximum Likelihood؛ Iran
Title
Estimation of b-value without levels of completeness (MC)
Authors
Soheil Azizi, Noorbakhsh Mirzaei, Javad Kazemian
Abstract
One of the challenges of estimating the Gutenberg–Richter b-value is to determine the levels of completeness of earthquakes (MC) with numerous methods, and their difficulties. In this research we provided a de-clustered and homogeneous earthquake catalog to estimate the b-value for five major seismotectonic provinces of Iran using a procedure without assumptions on levels of completeness. Comparison of the results of this study with results from previous methods that required determination of MC indicate the success of the method. Comparison of the estimated Gutenberg–Richter b-values from recorded earthquakes in major seismotectonic provinces of Iran with those obtained from previous works done with other methods show that estimation of b-value using the method without levels of completeness (MC) has been successful. This method can reduce time duration for evaluation of seismicity parameters.
Keywords
Seismicity parameters, Level of Completeness (MC), b-value, Seismotectonic provinces, Maximum Likelihood, Iran