Results 161 to 170 of about 1,865 (202)
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On geoid determination from airborne gravity
Journal of Geodesy, 2003Recent advances in the performance of scalar airborne gravimetry, routinely yielding gravity data with an accuracy as high as 1 mGal with a minimum spatial resolution (full wavelength) of 10 km, allow for the use of airborne gravity in precise geoid computations.
Novak, Pavel +7 more
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Airborne gravity for resource exploration
8th International Congress of the Brazilian Geophysical Society, 2003The AIRGrav system has been used for oil and mining exploration projects in North and South America, Africa and the Middle East. Results are presented for some representative surveys. Accuracy of the AIRGrav data is a function of aircraft speed, and line spacing.
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Noise and Repeatability of Airborne Gravity Gradiometry
Proceedings, 2014When evaluating the capability of any Airborne Gravity Gradiometer (AGG) system some of the most useful inputs are data collected over areas with good-quality ground truth. A gravity test range has been established at Kauring in Western Australia for such comparisons.
A.N. Christensen, M.H. Dransfield
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Airborne Laboratory for Gravity Field Research
Seismic Instruments, 2019Modern methods of studying the Earth’s gravity field on a mobile base are discussed, among them aerogravimetric research. The features of creating a highly autonomous airborne gravimetric laboratory with a long flight duration for operations in remote territories and waters are described.
N. V. Drobyshev +3 more
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Leveling airborne and surface gravity surveys
Applied Geomatics, 2021For both airborne gravimetric and airborne magnetic surveys, systematic residual errors usually remain in the data after standard data processing. In the literature, the mismatches at the crossover points are used to either adjust the processing procedures or directly adjust the results. This is usually called crossover adjustment.
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2019
A system using a helicopter, 30 to 70 knots, was perfected in the early 1970s, a slow flying airplane system, 80 to 130 knots, became available in the early 1980s, and an over water fast airplane system, 200 to 320 knots, was flown in the mid 1980s.
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A system using a helicopter, 30 to 70 knots, was perfected in the early 1970s, a slow flying airplane system, 80 to 130 knots, became available in the early 1980s, and an over water fast airplane system, 200 to 320 knots, was flown in the mid 1980s.
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Airborne gravity is here; discussion and reply
Geophysics, 1985Abstract Hammer's replies to Steenland's, Herring's and Pearson's discussions of his paper, “Airborne gravity is here!,” are nothing short of incredulous. Both his paper and his replies would suggest that he did not expect those with experience in dynamic gravity to read them. Hammer accuses his critics of ignoring “…
M. J. Hall, Sigmund Hammer
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Noise and repeatability of airborne gravity gradiometry
First Break, 2015For the past 15 years airborne gravity gradiometry has been used on a variety of petroleum and mineral exploration plays. As explorers focus on increasingly deeper targets with ever more subtle geophysical signatures, there is a growing need to accurately gauge the accuracy and resolution of airborne gravity gradiometer systems.
Asbjorn Norlund Christensen +2 more
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Successful applications of airborne gravity gradiometry
International Workshop and Gravity, Electrical & Magnetic Methods and their Applications, Chenghu, China, 19-22 April 2015, 2015Airborne gravity gradiometry is the latest major advance in one hundred years of gravity exploration. It is now a well accepted technique for collecting high resolution gravity with continuouus coverage. The breadth of applications is large. Here three examples demonstrate its value in geothermal exploration in rugged terrains, structural and ...
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Topographic and terrain correction for airborne gravity
Geophysics, 1974Abstract A simple, convenient procedure is outlined for evaluating topographic and terrain effects in airborne gravimetry. The method assumes that continuous terrain data (flight elevation and terrain clearance) are available along a traverse.
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