Results 51 to 60 of about 93,230 (195)

Isostasy – Geodesy

, 2015
Isostasy (Greek isos “equal,” stasis “stand still”) is a term in geology, geophysics, and geodesy to describe the state of mass balance (equilibrium) between the Earth’s crust and upper mantle.
Mohammad Bagherbandi, Lars E. Sjöberg, Sjöberg, Lars E.,, Bagherbandi, Mohammad,   +3 more
core   +1 more source

2021–2023 Unrest and Geodetic Observations at Askja Volcano, Iceland

Geophysical Research Letters
Unrest began in July 2021 at Askja volcano in the Northern Volcanic Zone (NVZ) of Iceland. Its most recent eruption, in 1961, was predominantly effusive and produced ∼0.1 km3 lava field. The last plinian eruption at Askja occurred in 1875.
Michelle M. Parks, Freysteinn Sigmundsson, Vincent Drouin, Sigrún Hreinsdóttir, Andrew Hooper, Yilin Yang, Benedikt G. Ófeigsson, Erik Sturkell, Ásta R. Hjartardóttir, Ronni Grapenthin, Halldór Geirsson, Elisa Trasatti, Sara Barsotti, Rikke Pedersen, Páll Einarsson, Bergrún A. Óladóttir, Hildur M. Friðriksdóttir   +16 more
doaj   +1 more source

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki, Michael E. Jackson, Glen S. Mattioli, David J. Mencin, Karl Feaux, Donna J. Charlevoix   +5 more
wiley   +1 more source

Evaluation of Pelletized Artificial Geopolymer Aggregate Manufactured From Volcano Ash [PDF]

, 2013
This paper introduced the new pelletized artificial geopolymer aggregate made from volcano ash. This is one of the effort to diminish the high quantity of volcano mud from East Java, Indonesia, that become a major issue since May 29, 2006 when it ...
Nizar, I. Khairul, Bakri, A. M. Mustafa Al, I Khairul Nizar, Y Zarina, Rafiza, A. R., A R Rafiza, A M Mustafa Al Bakri, Hardjito, Djwantoro, H Kamarudin, D Hardjito, Kamarudin, H., Zarina, Y.   +11 more
core  

The critical role of volcano monitoring in risk reduction [PDF]

, 2008
International audienceData from volcano-monitoring studies constitute the only scientifically valid basis for short-term forecasts of a future eruption, or of possible changes during an ongoing eruption. Thus, in any effective hazards-mitigation program,
Tilling, R. I.
core   +2 more sources

Short‐Wavelength Seafloor Topography From SWOT Marine‐Gravity Products Using a Transformer U‐Net With Hybrid Loss

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Classical satellite altimetry has limited sensitivity to seafloor topography at wavelengths shorter than about 150 km, leaving short‐wavelength structure poorly constrained away from ship tracks. The Surface Water and Ocean Topography (SWOT) mission improves gravity recovery at these scales.
Ruichen Zhou, Peng Peng, Haoming Yan, Zizhan Zhang, Jiuke Wang, Binbin Liao, Jinyun Guo, Nico Sneeuw   +7 more
wiley   +1 more source

Coupled subdaily and multiweek cycles during the lava dome erupt of Soufriere Hills Volcano, Montserrat [PDF]

, 2013
Observations of volcanoes extruding andesitic lava to produce lava domes often reveal cyclic behaviour. At Soufriere Hills Volcano, Montserrat, cycles with sub-daily and multi-week periods have been recognised on many occasions.
Costa, A., Costa, Antonio, Stewart, R.C, A. Costa, H. Odbert, Stewart, R., Costa, A, Odbert, H., Odbert, H.M, Wadge, G., R. Stewart, Wadge, G, G. Wadge   +12 more
core   +1 more source

Crustal Shear‐Wave Velocity and Azimuthal Anisotropy Imaging Reveals the Merapi‐Merbabu‐Telomoyo Volcanic Chain, Central Java

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract We present new results from ambient noise tomography and azimuthal anisotropy analysis of the DOMERAPI data set to investigate crustal structure beneath the Merapi‐Merbabu‐Telomoyo region in central Java. The 3D shear‐wave velocity (Vs) model reveals a prominent high‐Vs anomaly extending from south of Merapi through Merbabu to Telomoyo ...
Iqwal Ramadhan, Sri Widiyantoro, Zulfakriza, Jean‐Philippe Metaxian, Nicholas Rawlinson, Jean‐Paul Montagner, Tedi Yudistira   +6 more
wiley   +1 more source

The Role of Tectonic Inheritance in Active Rift Seismicity and Magmatism: Constraints From 3‐D Gravity Inversion and D‐InSAR Modeling of the 2025 Fentale Swarm, Ethiopia

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract The role of inherited lithospheric structures in active rift seismicity and magma intrusion remains a key uncertainty in continental breakup dynamics. We investigate the January 2025 Northern Main Ethiopian Rift swarm using constrained 3‐D gravity inversion and D‐InSAR observations to characterize crustal architecture, seismicity, and active ...
Denberu Besfat, Tilahun Mammo
wiley   +1 more source

Together Again for Geodesy

This open access volume contains 46 selected papers from the symposia organised or co-organised by the International Association of Geodesy (IAG) in the framework of the 28th General Assembly of the International Union of Geodesy and Geophysics (IUGG ...

core   +2 more sources