Results 81 to 90 of about 10,989 (307)

Re-pressurized magma at Mt. Etna, Italy, may feed eruptions for years

open access: yesCommunications Earth & Environment, 2021
Melt accumulating in multiple reservoirs beneath Mt Etna could feed eruptions for decades to come, according to detailed seismic tomography modelling.
Pasquale De Gori   +5 more
doaj   +1 more source

Cost Analysis Insights for Offshore CCS Hubs: A Case Study of the Santos Basin, Brazil

open access: yesGreenhouse Gases: Science and Technology, EarlyView.
ABSTRACT The reuse of decommissioned offshore platforms for geological carbon storage offers a cost‐effective and technically feasible strategy to reduce greenhouse gas emissions in emerging economies. This study presents a comprehensive techno‐economic assessment of offshore carbon capture and storage (CCS) hubs in Brazil, with a focus on the Merluza ...
Norah A. Ordoñez   +4 more
wiley   +1 more source

The Stromboli geophysical experiment. Preliminary report on wide angle refraction seismics and morphobathymetry of Stromboli island (Southern Tyrrhenian sea, Italy)based on integrated offshore-onshore data acquisition (cruise STRO-06 R/V Urania) [PDF]

open access: yes, 2007
The Stromboli geophysical experiment, performed to acquire onshore and offshore seismic data through a combined on-land and marine network, was finalized to reconstruct the seismic tomography of the volcano and to investigate the deep structures and the
Ciampi, Maurizio   +33 more
core  

Fully nonlinear inversion of fundamental mode surface waves for a global crustal model [PDF]

open access: yes, 2007
We use neural networks to find 1-dimensional marginal probability density functions (pdfs) of global crustal parameters. The information content of the full posterior and prior pdfs can quantify the extent to which a parameter is constrained by the data.
Meier, U.   +2 more
core   +1 more source

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

open access: yesGeological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito   +8 more
wiley   +1 more source

Reactive Preservation of Carbonate in Earth's Mantle Transition Zone

open access: yesGeophysical Monograph Series, Page 167-177., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Jie Li   +3 more
wiley  

+5 more sources

Seismic Reflection Tomography [PDF]

open access: yesExploration Geophysics, 1988
Velocity analysis in current conventional seismic processing is beginning to appear inadequate for dealing with the increasingly complex geological structures of interest today. Tomographic imaging using individual arrival traveltimes from a given reflector may offer the prospect of reconstructing in detail an accurate velocity field above that ...
openaire   +1 more source

Global travel time tomography with 3-D reference models

open access: yes, 2007
In this study, a global high-resolution P-wave velocity model is obtained for the Earth's crust and mantle using travel time tomography. Improvements to previous models are achieved by incorporating additional data and advancing the method to use 3-D ...
Amaru, M.L.   +2 more
core  

One-dimensional physical reference models for the upper mantle and transition zone: combining seismic and mineral physics constraints

open access: yes
One-dimensional seismic reference models are known to be a nonunique solution to global seismic data, hampering an interpretation in terms of physical structure. Here we test the compatibility of the simplest hypothesis of a mantle convecting as a whole,
Giardini, D.   +3 more
core   +1 more source

Time-lapse seismic attenuation as a tool for monitoring hydrocarbons and CO2 in geological materials [PDF]

open access: yes, 2011
Both laboratory experiments and theoretical models have shown seismic attenuation to be sensitive to various petrophysical properties of rock and pore fluids, making attenuation a potentially useful time-lapse attribute to measure and interpret through ...
Blanchard, Thomas David
core  

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