caa a22 4500 463172329 CHVBK 20180406164817.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10950-006-9041-z doi (NATIONALLICENCE)springer-10.1007/s10950-006-9041-z Kalyoncuoglu U. Department of Geophysics, Süleyman Demirel University, 32260, Isparta, Turkey aut Evaluation of seismicity and seismic hazard parameters in Turkey and surrounding area using a new approach to the Gutenberg-Richter relation [Elektronische Daten] [U. Kalyoncuoglu] In this study, the spatial distributions of seismicity and seismic hazard were assessed for Turkey and its surrounding area. For this purpose, earthquakes that occurred between 1964 and 2004 with magnitudes of M ≥ 4 were used in the region (30-42°N and 20-45°E). For the estimation of seismicity parameters and its mapping, Turkey and surrounding area are divided into 1,275 circular subregions. The b-value from the Gutenberg-Richter frequency-magnitude distributions is calculated by the classic way and the new alternative method both using the least-squares approach. The a-value in the Gutenberg-Richter frequency-magnitude distributions is taken as a constant value in the new alternative method. The b-values calculated by the new method were mapped. These results obtained from both methods are compared. The b-value shows different distributions along Turkey for both techniques. The b-values map prepared with new technique presents a better consistency with regional tectonics, earthquake activities, and epicenter distributions. Finally, the return period and occurrence hazard probability of M ≥ 6.5 earthquakes in 75years were calculated by using the Poisson model for both techniques. The return period and occurrence hazard probability maps determined from both techniques showed a better consistency with each other. Moreover, maps of the occurrence hazard probability and return period showed better consistency with the b-parameter seismicity maps calculated from the new method. The occurrence hazard probability and return period of M ≥ 6.5 earthquakes were calculated as 90-99% and 5-10years, respectively, from the Poisson model in the western part of the studying region. Springer Science+Business Media, Inc., 2006 seismicity nationallicence b -value nationallicence earthquake physics nationallicence Mediterranean region nationallicence seismic hazard nationallicence Journal of Seismology Kluwer Academic Publishers 11/2(2007-04-01), 131-148 1383-4649 11:2<131 2007 11 10950 https://doi.org/10.1007/s10950-006-9041-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10950-006-9041-z text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Kalyoncuoglu U. Department of Geophysics, Süleyman Demirel University, 32260, Isparta, Turkey aut NATIONALLICENCE 773 0- Journal of Seismology Kluwer Academic Publishers 11/2(2007-04-01), 131-148 1383-4649 11:2<131 2007 11 10950 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer