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Satellite Data- Based Natural Hazard Study in Iran
Farrokh . Barzegar
Georesources & Environment Expolration Group
1. Introduction
The revolution caused by placing earth observation satellites into orbit and data acquired, has provided a new opportunity to geoscientists to access to a series of precise and complementary tools with a significant impact on their understanding of earth phenomena and features. Development of new sensors multiplied by increased temporal, spectral and spatial resolution have made these data as an ideal means not only to monitor different surfacial and environmental phenomena but also tom define the parameters involved, to delineate the areas affected and finally to extract information for requoied planning and management.
This report represents the results obtained from investigation made on some of the existing natural disasters of the country and their respective impavts which are carried out on the base of application of data acquired by space platforms and their subsequent integration through the use of geographic information systems.
2. Data Used
Space taken data which are used for the projects under investigations includes:
- Manned spacecrafts (Gemini and Appolo)
- Landsat imageries ( MSS ,TM, ETM+ )
- NOAA images (AVHRR )
- SPOT data (HRV, XS)
- Terra and Aqua Data (ASTER. MODIS )
- ENVISAT Data (ASAR )
- Space Stations (Astronauts Photographs )
Complementary data such as topographic and thematic maps at different scales ,aerial photographs at available scales, ground observation data etc, are also used not only to carry out these projects but to be used in establishment of a GIS-based databank as well.
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