Results 21 to 30 of about 3,935 (259)

High-frequency analysis of Earth gravity field models based on terrestrial gravity and GPS/levelling data: a case study in Greece

open access: yesJournal of Geodetic Science, 2015
The present study aims at the validation of global gravity field models through numerical investigation in gravity field functionals based on spherical harmonic synthesis of the geopotential models and the analysis of terrestrial data. We examine gravity
Papanikolaou T. D., Papadopoulos N.
doaj   +1 more source

THE SUCCESS OF SATELLITE GRAVIMETRY IN GEOPHYSICAL INVESTIGATIONS [PDF]

open access: yesGeological Behavior
Terrestrial measurements of gravity data are limited to only accessible areas. Areas that are not easily accessible due to lack of access route, security, cost etc. are found unfavorable for terrestrial measurements.
Ahmad Alhassan   +6 more
doaj   +1 more source

Using a SPATIAL INS/GNSS MEMS Unit to Detect Local Gravity Variations in Static and Mobile Experiments: First Results

open access: yesSensors, 2023
In this study, we present the feasibility of using gravity measurements made with a small inertial navigation system (INS) during in situ experiments, and also mounted on an unmanned aerial vehicle (UAV), to recover local gravity field variations.
Benjamin Beirens   +5 more
doaj   +1 more source

Discussion of the Non-Destructive Testing Possibilities for the Study of the Great Pyramid of Giza

open access: yesHeritage, 2023
Many constructions built by ancient civilization hold many mysteries and attract the attention of historians, archaeologists and tourists from all over the world.
Sergey Ivashov   +2 more
doaj   +1 more source

Precise levelling data processing near terraced landforms

open access: yesGeodesy and Cartography, 2014
Precise levelling results are affected by the Earth’s gravity field, especially in areas of abrupt changes of landscape, such as terraced landforms. To eliminate the effect of the gravity field gradient, corrections need to be used in precise levelling ...
Silja Talvik
doaj   +1 more source

Hidden pressurized fluids prior to the 2014 phreatic eruption at Mt Ontake

open access: yesNature Communications, 2022
Phreatic volcanic eruptions can be unexpected and devastating. Here the authors, using seismic-based methodologies, find that pressurized fluids accumulated 5 months before the deadly phreatic eruption at Mt Ontake; a period previously considered as ...
Corentin Caudron   +7 more
doaj   +1 more source

Cartographic scripting for geophysical mapping of Malawi Rift Zone [PDF]

open access: yesTehnika, 2022
This paper describes a scripting cartographic techniques that automatically generate maps from open source spatial data using syntax of General Mapping Tools (GMT) and R. A case study present mapping East Africa with a focus on Malawi. In this study, two
Lemenkova Polina
doaj   +1 more source

Fifty years of geophysical researches of glaciers in Institute of Geography, the Russian Academy of Sciences, 1966–2016

open access: yesЛëд и снег, 2016
In 1967‑2015, Institute of Geography of the USSR/Russian Academy of Sciences together with other organizations carried out field expeditions in different areas of mountain and polar glaciations in many regions: the Polar Urals, Caucasus, Pamir, Zailiysky
V. M. Kotlyakov, Yu. Ya. Macheret
doaj   +1 more source

Gravity field modelling and gravimetry

open access: yesGeodesy and Cartography, 2015
The summary of research activities concerning gravity field modelling and gravimetric works performed in Poland in the period of 2011-2014 is presented.
Krynski Jan
doaj   +1 more source

Recent gravity changes in China Mainland

open access: yesGeodesy and Geodynamics, 2011
Based on results of the mobile gravity measurements of the Crustal Movement Observation Network of China and Digital Earthquake Observation Network of China, this paper shows the pattern of temporal gravity changes in China mainland on a time scale of 2 –
Li Hui   +5 more
doaj   +1 more source

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