Paper Title
New Updated Classification of Earthquakes Based on Faulting Style

Abstract
Earthquakes occur on fault and create new fault. Normal, reverse and strike-slip faults earthquakes occur on normal, reverse and strike-slip faults, respectively. The aim of this work is to suggest a new unified classification of earthquakes based on the faulting styles and characterization of each class. The characterization criteria include the maximum magnitude, focal depth, b-constant value, return periodand relations between magnitude, focal depth and dip of fault plane. Global Centroid Moment Tensor (GCMT) catalog are source of the used data. This catalog covers the period from Jan.1976 to Dec. 2017. We selected only the shallow (depth less than 70kms) pure normal, strike-slip and reverse faults earthquakes magnitude ≤ 5 and excluded the oblique faults earthquakes. Majority of normal and strike-slip faults earthquakes occurred in the upper crust and reverse fault earthquakes occur throughout the thickness of crust. The main trend for the derived b-values for the three classes is: b normal fault>bstrike-slip fault>breverse fault. The mean return period for normal faulting earthquake is longer than of strike-slip faulting earthquakes while for the reverse faulting earthquakes is the shorter. The obtained results reported relation between magnitude and focal depth of normal fault earthquakes. Negative significant correlation between the magnitude and dip class for normal and reverse faults earthquakes was reported. Negative and positive relations between the focal depth and dip class were recorded for normal and reverse faulting earthquakes, respectively. The suggested classification of earthquakes provides significant information to understand seismicity, seismtectonics, and seismic hazard analysis. Key words - Faulting; earthquake; magnitude; b-constant; earthquakes classification