Geoscience Reference
In-Depth Information
Earthquake Precursory Signals
from Satellite Imagery and Seismography:
A Review
Habibeh Valizadeh Alvan and Shattri Mansor
Abstract Earthquake prediction has been always an interesting, controversial
subject among researchers. Scientists, data providers, geologists, geochemists, and
remote sensing experts are working on new theories and data compositions to
provide better understanding of earthquake related processes to present opportu-
nities for detection short term precursory events. Satellite based data are now used
for a wide variety of experimental earth studies. Several atmospheric and surface
phenomena have been recognized as precursory events and efforts are being made
to produce local prediction models which encompass all the regional, climatic, and
geological setting of earthquake prone areas. The first step of a successful pre-
diction would be producing thorough information about the geodynamics of the
region. While long term prediction enable scientists to identify regions with
expected future earthquakes, continuous monitoring of changes of known pre-
cursors may pave the way for establishing local warning systems. For this, in situ
and satellite-based measurements should be compounded and co analyzed so that
all seismic and non-seismic factors in a particular region are identified. This
review is a quick look at the recent advances and problems in identifying earth-
quake precursors as well as new technologies for solving old problems of geolo-
gists such as mapping hidden faults.
Keywords Earthquake prediction
Phenomenon
Fault, remote sensing
Early
warning
