scholarly journals The distribution of annual maximum earthquake magnitude around Taiwan and its application in the estimation of catastrophic earthquake recurrence probability

2011 ◽  
Vol 59 (1) ◽  
pp. 553-570 ◽  
Author(s):  
Jui-Pin Wang ◽  
Chung-Han Chan ◽  
Yih-Min Wu
Keyword(s):  
Earthquake Magnitude ◽  
Annual Maximum ◽  
Earthquake Recurrence ◽  
Catastrophic Earthquake ◽  
Maximum Earthquake Magnitude ◽  
Maximum Earthquake

Application of Extreme Value Statistics to Annual Maximum Magnitudes in Jordan Employing a Mixture Distribution

1999 ◽  
Vol 15 (4) ◽  
pp. 711-724 ◽  
Author(s):  
Abdallah I. Husein Malkawi ◽  
Fayez A. Abdulla ◽  
Samer A. Barakat ◽  
Mohanned S. Al-Sheriadeh
Keyword(s):  
Maximum Likelihood ◽  
Simplex Method ◽  
Mixture Distribution ◽  
Maximum Likelihood Estimators ◽  
Extreme Value ◽  
Annual Maximum ◽  
Maximum Earthquake Magnitude ◽  
Newton Raphson ◽  
Maximum Earthquake ◽  
Raphson Method

The concept of extreme value mixture distribution (EVmix) has been implemented in this study to estimate maximum earthquake magnitude occurrence. The EVmix model is applied to annual maximum earthquake magnitude occurrence in Jordan and conterminous regions spanning over the period 1918 to 1997. The maximum likelihood method, in conjunction with the two optimization methods, was employed for determining the statistical parameters of the Gumbel's asymptotic distribution, i.e., GI, and the extreme value distributions EVIII and EVmix. The Simplex method of Nelder and Mead (1965) was found to be more successful in obtaining the maximum likelihood estimators of the three given distributions than the Newton-Raphson method. The difficulties inherent to the Newton-Raphson method were overcome by the Simplex method. It is shown in this study that the EVmix model fits the observed annual maxima far better than GI and EVIII models. In addition, the maximum likelihood estimators obtained using the Simplex method were used to calculate the earthquake risk for a given return period and a design lifetime of structures.

scholarly journals THE ATALANTI ACTIVE FAULT: RE-EVALUATION USING NEW GEOLOGICAL DATA

2004 ◽  
Vol 36 (4) ◽  
pp. 1560 ◽  
Author(s):  
Σ. B. Παυλίδης ◽  
Σ. Βαλκανιώτης ◽  
A. Γκανάς ◽  
Δ. Κεραμυδάς ◽  
Σ. Σμπόρας
Keyword(s):  
Active Fault ◽  
Active Faults ◽  
Earthquake Magnitude ◽  
Earthquake Sequence ◽  
Historical Earthquake ◽  
Geological Data ◽  
Maximum Earthquake Magnitude ◽  
Surface Ruptures ◽  
Fault Trace ◽  
Maximum Earthquake

The Northern Gulf of Evoia is a region with an intense neotectonic activity, dominated by characteristic and impressive active faults. The only fault in the region which is connected with a strong historical earthquake, is the Atalanti fault, with the well-known earthquake sequence of 1894. For an accurate mapping of the fault trace, the 1894 surface ruptures investigation and the estimation of the area's seismic hazard, there has been made a detailed geological - neotectonic investigation of the Atalanti city area. The results of this investigation show that the Atalanti fault comprises a 20- 30km long fault zone, divided in at least 4 segments: Atalanti, Kiparissi-Almyra, Tragana-Proskyna, Martino and possibly Larymna segment. The maximum earthquake magnitude is estimated in Msmax=6.8, and the recurrence interval, concerning the same magnitude, for Atalanti fault is larger than 1000 years, possibly even more than 2000 years. Paleoseismological trenching in Agios Konstantinos area excludes the connection of this fault with the earthquake sequence of 1894.

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