Results 241 to 250 of about 17,351,400 (291)

Dynamics of the Yellowstone hydrothermal system

Reviews of Geophysics, 2014
Shaul Hurwitz, Jacob Lowenstern
exaly   +2 more sources

Be and Be in Submarine Hydrothermal Systems

1991
The solution chemistry of the hydrothermal fluids emanating from sediment covered ridges is distinct from that observed on the open ridges where the solutions exit directly from basalt. Differences in composition are believed to result from interaction of a “primary” hydrothermal fluid, similar in composition to that characteristic of sediment-starved ...
D. L. Bourlés   +3 more
openaire   +1 more source

Eukaryotic organisms of continental hydrothermal systems

Extremophiles, 2019
Continental hydrothermal systems are a dynamic component of global thermal and geochemical cycles, exerting a pronounced impact on water chemistry and heat storage. As such, these environments are commonly classified by temperature, thermal fluid ionic concentration, and pH.
Sabrina R, Brown, Sherilyn C, Fritz
openaire   +2 more sources

Thermodynamics of strecker synthesis in hydrothermal systems

Origins of Life and Evolution of the Biosphere, 1995
Submarine hydrothermal systems on the early Earth may have been the sites from which life emerged. The potential for Strecker synthesis to produce biomolecules (amino and hydroxy acids) from starting compounds (ketones, aldehydes, HCN and ammonia) in such environments is evaluated quantitatively using thermodynamic data and parameters for the revised ...
M, Schulte, E, Shock
openaire   +2 more sources

Biological Potential of Martian Hydrothermal Systems

Astrobiology, 2003
A source of energy to power metabolism may be a limiting factor in the abundance and spatial distribution of past or extant life on Mars. Although a global average of chemical energy available for microbial metabolism and biomass production on Mars has been estimated previously, issues of how the energy is distributed and which particular environments ...
E S, Varnes, B M, Jakosky, T M, McCollom
openaire   +2 more sources

Short-Term Operation of Hydrothermal Systems

IFAC Proceedings Volumes, 1987
Abstract The objective of short-term operation is to produce a daily schedule for each reservoir that meets the system operating constraints (water balance, bounds on volumes and outflows) and the generation targets established by longer-term scheduling models.
L.M.V.G. Pinto, M.V.F. Pereira
openaire   +1 more source

Theory of Hydrothermal Systems

Annual Review of Earth and Planetary Sciences, 1984
Hydrothermal systems are sets of processes that redistribute energy and mass in response to circulating H20 fluids. These systems are active today in the oceanic and continental crusts, and their fossilized equivalents constitute a substantial portion of the geologic record.
openaire   +1 more source

Hydrothermal Systems in Small Ocean Planets

Astrobiology, 2007
We examine means for driving hydrothermal activity in extraterrestrial oceans on planets and satellites of less than one Earth mass, with implications for sustaining a low level of biological activity over geological timescales. Assuming ocean planets have olivine-dominated lithospheres, a model for cooling-induced thermal cracking shows how variation ...
Vance, Steve   +5 more
openaire   +3 more sources

Microbiology of ancient and modern hydrothermal systems

Trends in Microbiology, 2001
Hydrothermal systems have prevailed throughout geological history on earth, and ancient ARCHAEAN hydrothermal deposits could provide clues to understanding earth's earliest biosphere. Modern hydrothermal systems support a plethora of microorganisms and macroorganisms, and provide good comparisons for paleontological interpretation of ancient ...
A L, Reysenbach, S L, Cady
openaire   +2 more sources

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