Results 41 to 50 of about 226 (172)

3D Model of the Shallow Crustal Density Distribution of the Krafla Volcanic System in Iceland

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 7, July 2025.
Abstract Krafla volcano, located in Iceland's North Volcanic Zone, has been extensively studied using static gravity surveys since 1975. This study integrates measurements acquired between 2022 and 2023 with legacy data to produce a new gravity map of the area. We produce gravity gradient maps to delineate shallow subsurface density features and invert
Ana Martinez‐Garcia, Joachim Gottsmann, James Wookey, Alison Rust, Magnús T. Gudmundsson, Yan Lavallée   +5 more
wiley   +1 more source

Fitting gravimetric geoid models to vertical deflections [PDF]

Journal of Geodesy, 2008
Regional gravimetric geoid and quasigeoid models are now commonly fitted to GPS-levelling data, which simultaneously absorbs levelling, GPS and quasi/geoid errors due to their inseparability. We propose that independent vertical deflections are used instead, which are not affected by this inseparability problem.
Featherstone, Will, Lichti, D.
openaire   +2 more sources

Combined Classical and Quantum Accelerometers for Future Satellite Gravity Missions

Earth and Space Science, Volume 12, Issue 4, April 2025.
Abstract Cold atom interferometry based quantum accelerometers (Q‐ACCs) are very promising for future satellite gravity missions thanks to their strength in providing long‐term stable and precise measurements of non‐gravitational accelerations. However, their limitations due to the low measurement rate and the existence of ambiguities in the raw sensor
Alireza HosseiniArani, Manuel Schilling, Benjamin Tennstedt, Alexey Kupriyanov, Quentin Beaufils, Annike Knabe, Arpetha C. Sreekantaiah, Franck Pereira dos Santos, Steffen Schön, Jürgen Müller   +9 more
wiley   +1 more source

On the topographic effects by Stokes’ formula

Journal of Geodetic Science, 2014
Traditional gravimetric geoid determination relieson Stokes’ formula with removal and restoration of thetopographic effects. It is shown that this solution is in errorof the order of the quasigeoid-to-geoid difference, which ismainly due to incomplete ...
Sjöberg L.E.
doaj   +1 more source

Preliminary study of the Gravimetric Local Geoid Model in Jordan: case study (GeoJordan Model)

Annals of Geophysics, 2007
Recently, there has been an increased interest in studying and defining the Local and Regional Geoid Model worldwide, due to its importance in geodetic and geophysics applications.The use of the Global Positioning System (GPS) is internationally growing,
A. Al-Zoubi, O. Al-Bayari
doaj   +1 more source

Validation of European Gravimetric Geoid models in context of realization of EVRS system in Poland [PDF]

Geodesy and Cartography, 2019
In this study, several variants create and choose of a local quasi-geoid model in Poland have been considered. All propositions have a source in European Gravimetric Geoid models – EGG2008 and EGG2015, which are purely gravimetric models of reference ...
Dorota Marjańska, Tomasz Olszak, Dominik Piętka   +2 more
doaj   +1 more source

Quantification of the Flood Discharge Following the 2023 Kakhovka Dam Breach Using Satellite Remote Sensing

Water Resources Research, Volume 61, Issue 3, March 2025.
Abstract Fourteen months post the Ukrainian‐Russian war outbreak, the Kakhovka Dam collapsed, leading to weeks of catastrophic flooding. Yet, scant details exist regarding the reservoir draining process. By using a new technique for processing gravimetric satellite orbital observations, this study succeeded in recovering continuous changes in reservoir
Shuang Yi, Hao‐si Li, Shin‐Chan Han, Nico Sneeuw, Chunyu Yuan, Chunqiao Song, In‐Young Yeo, Christopher M. McCullough   +7 more
wiley   +1 more source

Species‐By‐Species Pattern Analysis of Coastal Dune Vegetation

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 2, February 2025.
Abstract Vegetation is crucial for stabilizing and developing coastal dunes. Different plant species exhibit different spatial distributions which reflect their environmental role and adaptation strategy. This study aims to provide a fine‐scale species‐by‐species analysis of vegetation spatial patterns on coastal dunes within the San Rossore–Migliarino–
D. Demichele, E. Belcore, M. Piras, C. Camporeale   +3 more
wiley   +1 more source

Crustal Heterogeneity Onshore Central Spitsbergen: Insights From New Gravity and Vintage Geophysical Data

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 1, January 2025.
Abstract Gravity data provide constraints on lateral subsurface density variations and thus provide crucial insights into the geological evolution of the region. Previously, gravity data from the Norwegian Arctic archipelago of Svalbard comprised an onshore regional gravity database with coarse station spacing of 2–20 km, offshore gravity profiles ...
Kim Senger, Fenna Ammerlaan, Peter Betlem, Marco Brönner, Marie‐Andrée Dumais, Jomar Gellein, Tormod Henningsen, Julian Janocha, Erik P. Johannessen, Jonas Liebsch, Jakob Machleidt, Tereza Mosočiová, Snorre Olaussen, Bo Olofsson, Nil Rodes, Sofia Rylander, Grace E. Shephard, Aleksandra Smyrak‐Sikora, Juan D. Solano‐Acosta, Anna Sterley   +19 more
wiley   +1 more source

Hybrid Geoid Model: Theory and Application in Brazil

Anais da Academia Brasileira de Ciências
Determination of the ellipsoidal height by Global Navigation Satellite Systems (GNSS) is becoming better known and used for purposes of leveling with the aid of geoid models.
DANIEL ARANA, PAULO O. CAMARGO, GABRIEL N. GUIMARÃES   +2 more
doaj   +1 more source