Results 81 to 90 of about 598 (190)

Examination of two major approximations used in the scalar airborne gravimetric system — a case study based on the LCR system

Journal of Geodetic Science, 2013
Airborne gravimetry has been proved to be the primary technique to efficiently obtain middle to short wavelength signals of the Earth’s gravity field in regional geodetic applications. In particular, the LCR (LaCoste & Romberg) based scalar system (i.e.,
Li X.
doaj   +1 more source

Airborne geoid determination [PDF]

, 2000
Airborne geoid mapping techniques may provide the opportunity to improve the geoid over vast areas of the Earth, such as polar areas, tropical jungles and mountainous areas, and provide an accurate "seam-less" geoid model across most coastal regions ...
Bastos, L., Forsberg, René, Gidskehaug, A., Olesen, Arne Vestergaard, Meyer, U., Timmen, L.   +5 more
core  

Imaging of microplastic distribution–related unsaturated water flow in sand

Vadose Zone Journal, Volume 25, Issue 2, March/April 2026.
Abstract Soil is the largest sink of microplastic (MP) in terrestrial ecosystems, yet little is known about the transport of MP in soils and its effect on water flow. Since pristine MP can generally be considered water repellent, the transport of MP and water flow are subject to feedback processes.
A. Cramer, P. Benard, A. Kaestner, M. Zarebanadkouki, P. Lehmann, A. Carminati   +5 more
wiley   +1 more source

Smoothed monthly Greenland ice sheet elevation changes during 2003–2023 [PDF]

Earth System Science Data
The surface elevation of the Greenland Ice Sheet is constantly changing due to the interplay between surface mass balance processes and ice dynamics, each exhibiting distinct spatiotemporal patterns.
S. A. Khan, H. Seroussi, M. Morlighem, W. Colgan, V. Helm, G. Cheng, D. Berg, V. R. Barletta, N. K. Larsen, W. Kochtitzky, M. van den Broeke, K. H. Kjær, A. Aschwanden, B. Noël, J. E. Box, J. A. MacGregor, R. S. Fausto, K. D. Mankoff, K. D. Mankoff, I. M. Howat, K. Oniszk, D. Fahrner, A. Løkkegaard, E. Y. H. Lippert, A. Bråtner, J. Hassan   +25 more
doaj   +1 more source

A case study of geoid modeling in Sulawesi and accuracy verification strategies for accommodating diverse MSL vertical datums

Terrestrial, Atmospheric and Oceanic Sciences
This study aims to introduce the geoid modeling process in Sulawesi and demonstrate the practical issues faced. There are limitations of terrestrial gravity surveys in Sulawesi due to its complex geography, so airborne gravity surveys were conducted from
Hsuan-Chang Shih, Leni Sophia Heliani, Yu-Shen Hsiao, Cheinway Hwang, Arisauna Maulidyan Pahlevi   +4 more
doaj   +1 more source

A Sensitivity Study into Strapdown Airborne Gravimetry

, 2010
Airborne gravimetry is an important tool for the geodesy and geophysics communities. Able to provide medium to high-resolution measurements over large areas, it is the link between the low-resolution satellite measurements and expensive terrestrial ...
Inácio, P.M.G. (author)
core  

Airborne gravimetry from a small twin engine aircraft over the Long Island Sound

, 1991
In January 1990, a test of the feasibility of airborne gravimetry from a small geophysical survey aircraft, a Cessna 404, was conducted over the Long Island Sound using a Bell Aerospace BGM-3 sea gravity meter.
Bell, Robin E., Coakley, Bernard J., Stemp, Robert W.   +2 more
core   +1 more source

Geoid determination using airborne gravity vectors

Earth, Planets and Space
In traditional airborne gravimetry, the vertical component of the gravity vector is used as an approximation of the measured magnitude of the gravity vector, which enters the determination of the local geoid.
Mehdi Goli, Ismael Foroughi, Spiros Pagiatakis, Stephen Ferguson, Pavel Novák   +4 more
doaj   +1 more source

Mapping iron oxides with Landsat-8/OLI and EO-1/Hyperion imagery from the Serra Norte iron deposits in the Carajás Mineral Province, Brazil

Brazilian Journal of Geology
: Mapping methods for iron oxides and clay minerals, using Landsat-8/Operational Land Imager (OLI) and Earth Observing 1 (EO-1)/Hyperion imagery integrated with airborne geophysical data, were applied in the N4, N5, and N4WS iron deposits, Serra Norte ...
Diego Fernando Ducart, Adalene Moreira Silva, Catarina Labouré Bemfica Toledo, Luciano Mozer de Assis   +3 more
doaj   +1 more source

Geoid profiles in the Baltic sea determined using GPS and sea level surface

Geodesy and Cartography, 2012
The idea was to compare the geoid in sea areas by an independent method, like GPS levelling, on the mainland. On the earth surface we can compare the gravimetric geoid with GPS levelling to get an accuracy estimation and tilt information.
Harli Jürgenson, Aive Liibusk, Artu Ellmann   +2 more
doaj   +1 more source