Results 1 to 10 of about 93,230 (195)

Thirty years of volcano geodesy from space at Campi Flegrei caldera (Italy) [PDF]

Scientific Data, 2022
Measurement(s) ground deformation process Technology Type(s) satellite imaging of a planet Factor Type(s) Satellite Line-of-Sight Displacement Sample Characteristic - Environment ground deformation process Sample Characteristic - Location Campi ...
Marco Polcari, Sven Borgstrom, Carlo Del Gaudio, Prospero De Martino, Ciro Ricco, Valeria Siniscalchi, Elisa Trasatti   +6 more
doaj   +4 more sources

Magma chambers: what we can, and cannot, learn from volcano geodesy [PDF]

Philosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences, 2019
Geodetic observations on volcanoes can reveal important aspects of crustal magma chambers. The rate of decay of deformation with distance reflects the centroid depth of the chamber. The amplitude of the deformation is proportional to the product of the pressure change and volume of the reservoir.
Paul Segall
exaly   +5 more sources

Satellite Geodesy Unveils a Decade of Summit Subsidence at Ol Doinyo Lengai Volcano, Tanzania

Geophysical Research Letters
The processing of hundreds of Synthetic Aperture Radar (SAR) images acquired by two satellite systems: Sentinel‐1 and COSMO‐SkyMed reveals a decade of ground deformation for a ∼0.5 km diameter area around the summit crater of the only active carbonatitic
Christelle Wauthier
exaly   +3 more sources

Magmatic connectivity among six Galápagos volcanoes revealed by satellite geodesy. [PDF]

Nat Commun, 2023
AbstractShallow magmatic reservoirs that produce measurable volcanic surface deformation are often considered as discrete independent systems. However, petrological analyses of erupted products suggest that these may be the shallowest expression of extensive, heterogeneous magmatic systems that we show may be interconnected.
Reddin E, Ebmeier SK, Rivalta E, Bagnardi M, Baker S, Bell AF, Mothes P, Aguaiza S.   +7 more
europepmc   +8 more sources

Two Distinct Magma Storage Regions at Ambrym Volcano Detected by Satellite Geodesy

Geophysical Research Letters, 2023
The flux of eruptible magma into a magmatic plumbing system influences eruption size and timing. If magma transfer is possible between two hydraulically‐connected magma lenses, system destabilization can tap a larger magma volume than stored in any one ...
T. Shreve, Y. Zhan, H. Le Mével, D. Roman, Y. Moussallam   +4 more
doaj   +2 more sources

The 2008–2010 Subsidence of Dallol Volcano on the Spreading Erta Ale Ridge: InSAR Observations and Source Models

Remote Sensing, 2021
In this work, we study the subsidence of Dallol, an explosive crater and hydrothermal area along the spreading Erta Ale ridge of Afar (Ethiopia). No volcanic products exist at the surface.
Carolina Pagli, Maurizio Battaglia
exaly   +3 more sources

Satellite Geodesy Captures Offset Magma Supply Associated With Lava Lake Appearance at Masaya Volcano, Nicaragua [PDF]

Geophysical Research Letters, 2018
Ascending and descending Interferometric Synthetic Aperture Radar data sets from various satellites (CSK, RSAT‐2, ALOS‐2, and Sentinel‐1) show a maximum of ∼8 cm ground inflation in Masaya caldera over a 10 month period (6 November 2015 to 1 September ...
K. J. Stephens, C. Wauthier
doaj   +2 more sources

Source Model for Sabancaya Volcano Constrained by DInSAR and GNSS Surface Deformation Observation

Remote Sensing, 2020
Sabancaya is the most active volcano of the Ampato-Sabancaya Volcanic Complex (ASVC) in southern Perú and has been erupting since 2016. The analysis of ascending and descending Sentinel-1 orbits (DInSAR) and Global Navigation Satellite System (GNSS ...
Luis F Cruz, Maurizio Battaglia
exaly   +3 more sources

Geodetic monitoring of the recent activity and the dome forming eruption at Nevado del Ruiz (Colombia), 2010–2023 [PDF]

Scientific Reports
Nevado del Ruiz (Colombia) is infamous for the catastrophic eruption of 1985 that destroyed the villages of Armero and Chinchiná. However, this was not the volcano’s first destructive event; similar eruptions also occurred in 1595 and 1845.
Milton Ordoñez, Juan Idárraga, Roberta Adamo, Maurizio Battaglia   +3 more
doaj   +2 more sources

Satellite Geodesy Reveals Shallow, Transient Magma Intrusions at Sotará Volcano, Colombia

Journal of Geophysical Research: Solid Earth
Abstract Sotará is a little‐known andesitic‐dacitic stratovolcano in southwestern Colombia. Although there are no recorded historical eruptions, the volcano shows clear evidence of geothermal activity, deformation, and volcano‐tectonic seismicity.
Leonardo Daniel Euillades, Patricia Alejandra Rosell, Jorge Alpala   +2 more
exaly   +2 more sources