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Advanced Earth Data Collection Technologies Overview

Remote sensing involves gathering Earth data using satellites, planes, and ships. Landsat satellites capture Earth's energy wavelengths, TOPEX/Poseidon maps ocean floors using radar, and Sea Beam on ships relies on sonar. Global Positioning System (GPS) aids in navigation and earthquake detection. Geographic Information System (GIS) helps analyze spatial data.

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Advanced Earth Data Collection Technologies Overview

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  1. Remote Sensing Section 2.3

  2. Landsat Satellite • The process of gathering data about Earth using satellites, airplanes, or ships is called remote sensing • Landsat satellites record reflected wavelengths of energy from Earth’s surface; equipped with a moving mirror; images are converted by computer

  3. TOPEX/Poseidon • TOPEX/Poseidon uses radar to map the ocean floor; Topography Experiment; also used to estimate ocean depths, study tidal changes, and ocean currents

  4. Sea Beam • Also used to map the ocean floor • Located on a ship not a satellite • Relies on sonar – the use of sound waves to detect and measure underwater objects • Used by fishing fleets, offshore drilling companies, etc…

  5. Global Positioning System • GPS is a satellite navigation system that allows users to locate their approximate position on Earth • 27 satellites cover the entire Earth simultaneously • Can also help detect earthquakes, create maps, and track wildlife

  6. Geographic Information System • Describe GIS

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