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  2. Seismic vibrator - Wikipedia

    en.wikipedia.org/wiki/Seismic_vibrator

    Seismic Research at the KGS, description of seismic vibrator and how the Kansas Geological Survey uses it; Alaska Department of Fish and Game, image of a vibroseis in use; Geosys IVI Pictures and descriptions of seismic vibrators manufactured by Geosys, Inc. of Japan; Vibrator truck Images of a vibrator trucks used by the University of Calgary

  3. United States Geological Survey - Wikipedia

    en.wikipedia.org/.../United_States_Geological_Survey

    United States Geological Survey marker on the summit of Maiden Peak (Washington) While much less expensive to compile and produce, the revised digital U.S. topo maps have been criticized for a lack of accuracy and detail in comparison to older generation maps based on aerial photo surveys and field checks. [ 34 ]

  4. Center for Earth Resources Observation and Science - Wikipedia

    en.wikipedia.org/wiki/Center_for_Earth_Resources...

    The Center for Earth Resources Observation and Science (EROS) is a United States Geological Survey data management, systems development, and research field center It serves as the national archive of remotely sensed images of the Earth's land surface acquired by civilian satellites and aircraft.

  5. List of surveying instruments - Wikipedia

    en.wikipedia.org/wiki/List_of_surveying_instruments

    Instruments used in surveying include: . Alidade; Alidade table; Cosmolabe; Dioptra; Dumpy level; Engineer's chain; Geodimeter; Graphometer; Groma (surveying) Laser ...

  6. Geological survey - Wikipedia

    en.wikipedia.org/wiki/Geological_survey

    A geological survey is the systematic investigation of the geology beneath a given piece of ground for the purpose of creating a geological map or model.Geological surveying employs techniques from the traditional walk-over survey, studying outcrops and landforms, to intrusive methods, such as hand augering and machine-driven boreholes, to the use of geophysical techniques and remote sensing ...

  7. United States Coast and Geodetic Survey - Wikipedia

    en.wikipedia.org/wiki/United_States_Coast_and...

    The commission looked into three main issues: the role of geodesy in the U.S. government's scientific efforts and whether responsibility for inland geodetics should reside in the U.S. Coast and Geodetic Survey or the U.S. Geological Survey; whether the Coast and Geodetic Survey should be removed from the Department of the Treasury and placed ...