enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Geophysical survey - Wikipedia

   en.wikipedia.org/wiki/Geophysical_survey

   Geophysical survey is the systematic collection of geophysical data for spatial studies. Detection and analysis of the geophysical signals forms the core of Geophysical signal processing. The magnetic and gravitational fields emanating from the Earth's interior hold essential information concerning seismic activities and the internal structure.

3. Aeromagnetic survey - Wikipedia

   en.wikipedia.org/wiki/Aeromagnetic_survey

   An aeromagnetic survey is a common type of geophysical survey carried out using a magnetometer aboard or towed behind an aircraft. The principle is similar to a magnetic survey carried out with a hand-held magnetometer, but allows much larger areas of the Earth's surface to be covered quickly for regional reconnaissance.

4. 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

5. Near-surface geophysics - Wikipedia

   en.wikipedia.org/wiki/Near-surface_geophysics

   A geophysical survey is a set of measurements made with a geophysical instrument. Often a set of measurements are along a line, or traverse. Many surveys have a set of parallel traverses and another set perpendicular to it to get good spatial coverage. [5] Technologies used for geophysical surveys include:

6. Survey vessel - Wikipedia

   en.wikipedia.org/wiki/Survey_vessel

   A survey vessel is any type of ship or boat that is used for underwater surveys, usually to collect data for mapping or planning underwater construction or mineral extraction. It is a type of research vessel , and may be designed for the purpose, modified for the purpose or temporarily put into the service as a vessel of opportunity , and may ...

7. Magnetic anomaly detector - Wikipedia

   en.wikipedia.org/wiki/Magnetic_anomaly_detector

   The magnetic anomaly from a submarine is usually very small. One source estimates that it is only about 0.2 nT at a distance of 600 m. [5] Another source estimates that a 100 m long and 10 m wide submarine would produce a magnetic flux of 13.33 nT at 500 m, 1.65 nT at 1 km and 0.01 nT at 5 km. [6] To reduce interference from electrical equipment or metal in the fuselage of the aircraft, the ...

8. 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 scanning; Level; Level staff; Measuring tape; Plane table; Pole (surveying) Prism (surveying) (corner cube retroreflector) Prismatic compass (angle measurement) Ramsden surveying ...

9. Electrical resistance survey - Wikipedia

   en.wikipedia.org/wiki/Electrical_resistance_survey

   Electrical resistance surveys (also called earth resistance or resistivity survey) are one of a number of methods used in archaeological geophysics, as well as in engineering geological investigations. In this type of survey electrical resistance meters are used to detect and map subsurface archaeological features and patterning.