Results 21 to 30 of about 29,363 (158)

When do we need pan-global freeze to explain ^(18)O-depleted zircons and rocks? [PDF]

open access: yes, 2011
Rocks with δ^(18)O values of less than 5‰ SMOW (Standard Mean Ocean Water) contain oxygen derived from ∼0‰ seawater or meteoric (rain or melted snow,
Bindeman, Ilya
core   +1 more source

Numerical computation of hydrothermal fluid circulation in fractured Earth structures [PDF]

open access: yesGeophysical Journal International, 1998
Summary Hydrothermal fluid circulation through porous Earth materials is an important physical phenomenon occurring in both submarine and continental environments. Irregularly interconnected discrete fractures are pervasive in nearly all Earth materials, providing preferential paths for fluid flow and controlling the circulating fluid patterns. Most
Jianwen Yang   +2 more
openaire   +2 more sources

Convective instabilities in two superposed horizontal liquid layers heated laterally [PDF]

open access: yes, 2003
This work is devoted to the theoretical study of the stability of two superposed horizontal liquid layers bounded by two solid planes and subjected to a horizontal temperature gradient.
Lebon, G., Madruga, S., Perez-Garcia, C.
core   +4 more sources

The role of high- and low-temperature ocean crust alteration for the marine calcium budget [PDF]

open access: yes, 2007
Calcium (Ca) is a key element for the understanding of the chemical evolution of the ocean and for the global climate on long geological time scales.
Amini, Marghaleray
core  

Numerical simulation of hydrothermal vent‐induced circulation at Endeavour Ridge [PDF]

open access: yesJournal of Geophysical Research: Oceans, 2005
Hydrothermal venting at Endeavour Ridge is focused at five major vent fields spaced at ∼2‐km intervals along a narrow (∼1 km wide) north‐south trending rift‐valley. A Princeton Ocean Model with an axially symmetric rift‐valley centered within a rotating, full‐depth (2400 m) stratified ocean is used to simulate the circulation and associated temperature
Mikhail V. Anisimov   +2 more
openaire   +2 more sources

Cap rock efficiency of geothermal systems in fold-and-thrust belts: Evidence from paleo-thermal and structural analyses in Rosario de La Frontera geothermal area (NW Argentina) [PDF]

open access: yes, 2016
Cap rock characterization of geothermal systems is often neglected despite fracturing may reduce its efficiency and favours fluid migration. We investigated the siliciclastic cap rock of Rosario de La Frontera geothermal system (NW Argentina) in order to
Aldega, L.   +7 more
core   +2 more sources

Idealised modelling of ocean circulation driven by conductive and hydrothermal fluxes at the seabed

open access: yesOcean Modelling, 2018
Geothermal heating is increasingly recognised as an important factor affecting ocean circulation, with modelling studies suggesting that this heat source could lead to first-order changes in the formation rate of Antarctic Bottom Water, as well as a significant warming effect in the abyssal ocean.
Alex Megann   +4 more
openaire   +5 more sources

The vertical distribution of iron stable isotopes in the North Atlantic near Bermuda [PDF]

open access: yes, 2012
Seawater dissolved iron isotope ratios (δ^(56)Fe) have been measured in the North Atlantic near Bermuda. In a full-depth profile, seawater dissolved δ^(56)Fe is isotopically heavy compared to crustal values throughout the water column (δ^(56)Fe_(IRMM-014)
Adkins, Jess, John, Seth G.
core   +1 more source

Space-weighted seismic attenuation mapping of the aseismic source of Campi Flegrei 1983-84 unrest [PDF]

open access: yes, 2017
Peer reviewedPublisher ...
Amoruso, A   +5 more
core   +1 more source

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