Results 51 to 60 of about 2,632 (195)

Deep Sources of Recent Volcanism in Armenia Inferred From Ambient Noise Tomography

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract We perform Rayleigh wave ambient noise tomography to investigate crustal seismic velocity structure and sources of volcanism in Armenia. Armenia, a key part of the tectonically and volcanically active Caucasus‐Anatolia region, is actively being deformed by the ongoing Arabian‐Eurasian continental collision.
Kh. Meliksetian, L. Sargsyan, I. Koulakov, N. Toghramadjian, N. Belovezhets, Y. Berezhnev, G. Navasardyan, E. Grigoryan, A. Vasilevsky, E. Sahakyan   +9 more
wiley   +1 more source

A new combined quasigeoid model in Tierra del Fuego [PDF]

, 2014
This work focuses on the development of a combined quasigeoid model for Tierra del Fuego province. The Equivalent Source Technique (EST) is applied together with the remove-compute-restore technique in order to combine gravity and GPS/levelling ...
Cogliano, D. del, Gómez, M. E., Hormaechea, J. L., Perdomo, Raúl   +3 more
core   +1 more source

Mélange‐Driven Coupling Between the Central Pine Island Ice Shelf and the Piglet Glacier Reverses Recent Acceleration Trends

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract By analyzing velocity changes of the Pine Island Ice Shelf (PIIS) from October 2014 to August 2025 using Sentinel‐1A/B imagery, we find that the PIIS flow changed markedly over this period. A distinct slowdown occurred at the central PIIS from 14 March 2022 to 20 January 2023, during which velocities decreased from 13.15 ± 0.04 to 12.71 ± 0.17 
Yite Chien, Chunxia Zhou, Bryan Riel
wiley   +1 more source

Evaluating two numerical methods for developing a local geoid model and a local digital elevation model for the Red Sea Coast, Egypt

Journal of King Saud University: Engineering Sciences, 2023
Global Navigation Satellite System (GNSS) provides ellipsoidal heights, whereas engineering projects need orthometric heights of points. Thus, to take advantage of GNSS in engineering work, the relation between orthometric and ellipsoid height must be ...
Hamdy M. Ahmed, Elshewy A. Mohamed, Shaheen A. Bahaa   +2 more
doaj   +1 more source

Pemodelan Geoid Lokal Kota Semarang Berdasarkan Model Geopotensial Globalgrace [PDF]

, 2015
Semarang geoid models determined by gravimetric method. The wavelength components used in the gravimetric method is long-wavelength, medium-wavelength, and short-wavelength.
Awaluddin, M. -. (Moehammad), Rizky, R. A. (Risa), Yuwono, B. D. (Bambang)   +2 more
core  

Almost Everything You Always Wanted to Know About Representing Gravity in Global Models but Were Afraid to Ask

Journal of Advances in Modeling Earth Systems, Volume 17, Issue 12, December 2025.
Abstract For over 60 years, an approximation involving spherical geopotentials has underlain the representation of gravity in global numerical models of Earth's atmosphere and oceans. This article explores how departures from sphericity can be allowed by assuming spheroidal geopotentials instead. A route to more accurate model formulation is indicated,
Andrew Staniforth, Andy White
wiley   +1 more source

The road toward a general relativistic metric inside the Earth and its effect on neutrino travel from CERN to GRAN-SASSO Laboratory [PDF]

, 2012
In a first attempt to describe the effect on neutrino travel inside the Earth caused by general relativity in the case of a dense Earth, we have neglected the Earth's rotation, the Earth's ellipticity and also the surface terrain variation, nevertheless ...
Besida, Olivier
core   +2 more sources

Braided Rivers From SWOT: Water Surface Dynamics Over the Multi‐Channel Brahmaputra River

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract The Surface Water and Ocean Topography (SWOT) satellite can simultaneously observe river elevation, width, and slope with high spatio‐temporal coverage and resolution (Fu et al., 2024, https://doi.org/10.1029/2023gl107652). The River Single‐Pass (RiverSP) product from SWOT provides geolocated river surface water dynamics with global coverage ...
Sarah E. Franze, Simon Köhn, Connor Chewning, Karina Nielsen   +3 more
wiley   +1 more source

Avaliação da correção gravimétrica do terreno calculada a partir de Modelos Digitais de Elevação e associados ao Sistema Geodésico Brasileiro e ao EGM2008

Revista Agrogeoambiental, 2011
A avaliação dos curtos comprimentos de onda do geopotencial normalmente está vinculada aos efeitos gravimétricos da topografia do terreno. Em vista da ausência de informação altimétrica em resolução adequada, utilizam-se modelos digitais de elevação, os ...
Karoline Paes Jamur, Rogers A. D. Pereira, Silvio Rogério Correia de Freitas, Fabiani D. Abati Miranda   +3 more
doaj   +1 more source

An Atomic Gravitational Wave Interferometric Sensor in Low Earth Orbit (AGIS-LEO)

, 2010
We propose an atom interferometer gravitational wave detector in low Earth orbit (AGIS-LEO). Gravitational waves can be observed by comparing a pair of atom interferometers separated over a ~30 km baseline.
Bouyer, Philippe, Chiow, Sheng-wey, Dickerson, Susannah, Feinberg, Lee, Graham, Peter W., Hogan, Jason M., Johnson, David M. S., Kasevich, Mark A., Keski-Kuha, Ritva, Kovachy, Tim, Rajendran, Surjeet, Saif, Babak, Seery, Bernard D., Sugarbaker, Alex   +13 more
core   +2 more sources