In frontier areas, satellite data are often brought into play during the earliest stages of exploration, well before seismic survey planning and layout. There, satellite imagery is used to prioritize areas likely to contain oil and gas prospects. Employing a variety of sensors, satellites are especially suited for gross reconnaissance of remote regions and large survey areas. The data from these different types of sensors are useful far beyond their capability to map topography, regional geology, lineaments and structural trends.
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