An efficient procedure is used for explicit description and evaluation of uncertainty of earthquake parameters in the uniform catalog of earthquakes in Iran and neighboring regions.An inadequate number of local and re...An efficient procedure is used for explicit description and evaluation of uncertainty of earthquake parameters in the uniform catalog of earthquakes in Iran and neighboring regions.An inadequate number of local and regional seismographic stations,poor station distribution,and Inadequacy of velocity models have resulted in conspicuous uncertainty in different parameters of recorded events.In a comprehensive seismic hazard analysis such uncertainties should be considered.Uncertainty of magnitude and location of events are evaluated for three different time periods,namely,historical,early instrumental,and modern instrumental time periods,for which existing seismological information differ widely in quantity,quality,and type.It is concluded that an uncertainty of 0.2-0.3 units of magnitude and 10-15 km in epicenter determinations should be considered in the most favorable conditions.None of the hypocenters of earthquakes in Iran can be considered as reliable,unless supported by other information such as展开更多
Foreword The purpose of geology is tracing the past,exploring the future,supporting development and benefiting mankind.Especially since the Industrial Revolution,geology has played crucial roles in supporting the soci...Foreword The purpose of geology is tracing the past,exploring the future,supporting development and benefiting mankind.Especially since the Industrial Revolution,geology has played crucial roles in supporting the socio-economic development,studying the earth evolution and the human origins,and promoting the scientific and technological progress.Facing an era of worldwide changes,traditional modes of展开更多
文摘An efficient procedure is used for explicit description and evaluation of uncertainty of earthquake parameters in the uniform catalog of earthquakes in Iran and neighboring regions.An inadequate number of local and regional seismographic stations,poor station distribution,and Inadequacy of velocity models have resulted in conspicuous uncertainty in different parameters of recorded events.In a comprehensive seismic hazard analysis such uncertainties should be considered.Uncertainty of magnitude and location of events are evaluated for three different time periods,namely,historical,early instrumental,and modern instrumental time periods,for which existing seismological information differ widely in quantity,quality,and type.It is concluded that an uncertainty of 0.2-0.3 units of magnitude and 10-15 km in epicenter determinations should be considered in the most favorable conditions.None of the hypocenters of earthquakes in Iran can be considered as reliable,unless supported by other information such as
文摘Foreword The purpose of geology is tracing the past,exploring the future,supporting development and benefiting mankind.Especially since the Industrial Revolution,geology has played crucial roles in supporting the socio-economic development,studying the earth evolution and the human origins,and promoting the scientific and technological progress.Facing an era of worldwide changes,traditional modes of
