TITLE:
A Seismotectonic Zonation Map of Eastern Siberia: New Principles and Methods of Mapping
AUTHORS:
L. P. Imaeva, V. S. Imaev, O. P. Smekalin, N. N. Grib
KEYWORDS:
Seismotectonic Studies, Seismic Hazard, Active Faults, Geological and Geomorphological Methods, Trenching, Seismic Source Zones, Seismic Belts, Seismic Belt Segments, Seismotectonic Zonation Map of Eastern Siberia
JOURNAL NAME:
Open Journal of Earthquake Research,
Vol.4 No.4,
November
13,
2015
ABSTRACT: The paper reviews goals and objectives, stages and components of a seismotectonic study conducted
in Eastern Siberia, Russia. Based on a comprehensive analysis of geological and geophysical
data, our study establishes whether the local earthquakes are of tectonic origin and reveals
relationships among earthquakes with recent geodynamic processes in the area under study.
Seismic hazard assessment and evaluation of tectonic processes are the two major closely interrelated
aspects of seismotectonic studies. A seismotectonic study is generally combined with a
seismic study and conducted prior to the stage of detailed seismic zonation (DSZ) which is followed
by seismic micro-zonation (SMZ). In three stages of the seismotectonic study, we analyze
specific geological structures, reveal the regional dynamics of seismotectonic processes, clarify
details of potential seismic hazard locations and identify sites of the potential instantaneous deformation of the crust which may take place due to active faulting. Based on results of our longterm
studies, a seismotectonic zonation map of Eastern Siberia is compiled. The paper briefly reviews
the methods of mapping and refers to data on active faults and neotectonic structures revealed
in the area under study, which are closely related to regional earthquake sources.