IASPEI - Picture Gallery

IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy
(S) - IASPEI - International Association of Seismology and Physics of the Earth's
Interior
JSS005 Poster presentation 1920
Seismicity investigation of Shiraz Region with remote sensing and GIS
Mrs. Azam Nemati
tehran shomal university student IASPEI
Central Zagros is one of the well-defined seimoactive areas in IRAN. My study area is located in Folded
Zagros and bonded by latitudes 27 N and 30 N and longitudes 51 E and 53E.At first seismic activity of
this territory is studied by using Geological, Geomorphological and Seismological methods. On the
available geology maps there arent any near trend between epicenters and active faults. This problem
comes from Salted Hormoz layer, evaporated sediment that underlain and their plastic property. For
solving this problem we use Remote Sensing Data such as ETM+ images, RADAR images that detect in
scansar mode with 50m resolution and SRTM DEM. We merge panchromatic band with multispectral
bands in ETM+ data and provide an image with 15m spatial resolution .For seismic date we use IIEES,
USGS and Tehran geophysics institute catalogs. Using of remote sensing data is a relatively new
technique that can be used to study deformation and identify lineaments. Multisensor remotely sensed,
has a wide view angle and high spatial resolution are very useful for lineament analysis and neotectonic
mapping in this area also a shaded relief Digital Elevation model (DEM) could be useful for the
quantitative approach of activity of faults- segments (morphotectonic analysis, estimation of the
displacement, erosion rate versus uplift rate, etc ). We identify linear features by visual analysis from
surface and morphotectonic evidence and some software filter (sharp edge, sun angle and etc). Finally
the use of satellite images, earthquakes and GIS analysis show that these are very powerful tools for
identification of blind faults and their characteristics.
Keywords: seimisity, shiraz, remotesensing