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- MakaleYalnız künye2018EMPIRICAL RELATIONS AMONG THE PARAMETERS ASSOCIATED WITH EARTHQUAKE RUPTURE MECHANISMS FOR IRANIAN EARTHQUAKES
Öztürk, Serkan; Ghassemi, Mohammad Reza; Sari, Mahmut
In this study, we aimed to derive the new and more reliable empirical relationships among different seismic parameters associated with the earthquake rupture mechanisms for Iranian earthquakes. For this purpose, we firstly converted the surface wave magnitudes into moment magnitudes in order to prepare a uniform earthquake dataset. Thereafter, we estimated the empirical relationships between moment magnitude and surface rupture length, moment magnitude and maximum displacement, and surface rupture length and maximum displacement. These linear empirical equations were obtained by orthogonal regression and the goodness of fits were discussed in terms of the correlation coefficients. The results obtained by the orthogonal regression in this paper are compared with the results obtained by the least square method in the literature. The present study confirms that representations of statistical correlations among different earthquake faulting parameters can be given more clear and straightforward by the orthogonal regression as compared to the least square method. In addition, such kind of relationships may provide some significant insights for the calculation of the maximum surface rupture length, maximum surface displacement, and associated maximum credible earthquakes for different seismotectonic regions of Iran as well as the estimation of earthquake magnitudes in paleoseismological studies.
- MakaleYalnız künye2013A PRACTICAL APPROACH FOR TREATMENT OF MUNICIPAL WASTEWATER BY ACTIVATED SLUDGE PROCESS
Nas, S. S.
This study deals with calculating reactor volumes using a graphical process in treatment of wastewaters by activated sludge process for discharge and carbonaceous biochemical oxygen demand (CBOD), different sludge ages, biomass concentrations, pollution loads and effluent soluble CBOD concentration. CBOD, measurements are carried out by using the standard oxidation (or incubation) test. Ultimate CBOD values are also estimated by the moment ad the least square methods. This study shows that the daily average pollution load of wastewaters is 352.5 kg d(-1) (monthly average discharge 20.4 1 s(-1), influent CBOD concentration 200 mg l(-1), activated sludge pond volume is 203-258 m(3) for different effluent CBOD concentration (50-40-30-20-10 mg l(-1) and biomass concentrations (3-3.5-4-4.5-5 g l(-1)) that are obtained from pollution loads volume charts. Therefore, data collection and the facility sizing are being illustrated by determining both quality quantity profile of a residential (KTU Central Campus) wastewater and the effect of the various parameters to the reactor.