GEOL 1340 Lecture Notes - Lecture 3: Digital Elevation Model, Electromagnetic Spectrum, Spheroid
29 Aug 2016
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Document Summary
Put stationary obj. in motion or changes motion of moving obj. Measures and monitors earth"s systems at various wavelengths. Radiation absorbed and emitted by earth can be measured by satellites. Satellite orbital paths for remote sensing o o o. Sun-synchronous: low earth, crosses equator same time each day. Active directs beam of e at surface and analyze reflected back (radar) (digital elevation model) o. Computer-based, data-processing tool for gathering, manipulating, and analyzing geo info o o o. Layers can be overlain to form composite map. Can be used to map spread disease, pop. Changes, land use, and geology and earth resources. Sea level not uniform, but varies in height due to gravity. Rep. of sea level and distorted relative to perfect spheroid formed solely by rotation o o o o o. Shape that surface of oceans would take due to gravity and rotation.
