Sentences with phrase «hydrothermal activity»

Hydrothermal activity refers to the natural process of hot water and steam moving under the Earth's surface. It usually occurs in volcanic areas where water is heated by magma or hot rocks. This activity can create hot springs, geysers, and even underwater vents where minerals and gases are released into the surrounding environment. Full definition
Cassini, which began its journey over two decades ago, facilitated the publication of more than 3,000 scientific papers with the data it collected and is responsible for several major discoveries, including liquid methane seas on Titan and evidence of hydrothermal activity on Enceladus.
Suggestions of hydrothermal activity on Europa led researchers to speculate that life there could resemble ecosystems around hydrothermal vents on Earth and would survive on chemosynthesis, extracting energy from chemicals.
Volcanic and tectonic controls on the distribution and characteristics of hydrothermal activity at mid-ocean ridges; geochemistry of rock - water interactions and the rate of the associated hydrothermal fluxes in global geochemical mass balances.
Key hypotheses of the origin of this soil include hydrothermal activity generating sulfate - rich, hydrated deposits on early Mars similar to what is found along the flanks of active Hawaiian volcanoes on Earth.
In an email interview with Newsweek, lead author Gaël Choblet, from the French National Center for Scientific Research, said that while he can not speculate on the presence of alien life on Enceladus, their timescale for hydrothermal activity does bolster the case that microbial life could emerge.
Hydrothermal activity occurs when seawater infiltrates and reacts with a rocky crust and emerges as a heated, mineral - laden solution, a natural occurrence in Earth's oceans.
The paper from researchers with the Cassini mission, published in the journal Science, indicates hydrogen gas, which could potentially provide a chemical energy source for life, is pouring into the subsurface ocean of Enceladus from hydrothermal activity on the seafloor.
We found that the particles seen in our images, which were droplets of ocean only hours earlier, bore evidence of large organic molecules and compounds that indicated hydrothermal activity similar to that observed at deep - sea vents on Earth's seafloor.
The presence of hydrothermal activity in Enceladus that could last for such a long time has major implications for the potential for life to evolve.
The second paper, recently published in Geophysical Research Letters, suggests hydrothermal activity as one of two likely sources of methane in the plume of gas and ice particles that erupts from the south polar region of Enceladus.
As NASA explains on its website, among other discoveries, Cassini revealed the icy jets that shoot from Saturn's minuscule moon Enceladus, which showed evidence of an underground ocean with hydrothermal activity within it.
While hydrothermal activity can produce considerable quantities of hydrogen, in porous rocks often found under seafloors, radiolysis could produce copious amounts as well.
He is head of the Centre for Geobiology, which examines volcanic hydrothermal activity and the formation of the mineral resources.
A new study of an impact crater in Finland suggests that such hydrothermal activity could have lasted up to 1.6 million years — at least 10 times longer than theory suggested, providing plenty of time for life to emerge and spread.
«Frictional heat powers hydrothermal activity on Enceladus.»
Formation of metallic ore deposits are predicted to accompany the underwater hydrothermal activity, so the team also plan to evaluate these undersea resources.
Fuel - coolant reactions deposited volcanic rocks and promoted hydrothermal activity.
It was an exciting moment — we hadn't expected to find hydrothermal activity in this area.»
Ceres shows clear signatures of pervasive hydrothermal activity, aqueous alteration and fluid mobility, so the organic - rich areas may be the result of internal processes.
But he says there is not yet enough evidence to know whether the icy moon boasts hydrothermal activity, which would provide energy and key elements necessary for life.
The simplest and most consistent explanation of the data is that biological activity played a role in the formation of the tubular textures in the Ries glasses, likely during postimpact hydrothermal activity.
Researchers estimate an age of about 3.7 billion years for the Martian deposits attributed to seafloor hydrothermal activity.
Evaporation of water or ice seems to be involved, but whether the spots formed after impacts or perhaps hydrothermal activity isn't clear yet.
Scientists believe the ocean exists as the result of heat generated by hydrothermal activity the moon's interior.
The possibility of undersea hydrothermal activity inside icy moons such as Europa at Jupiter and Enceladus at Saturn feeds interest in them as destinations in the quest to find extraterrestrial life.
NE Syrtis is an impact crater that may have hosted hydrothermal activity for some time in the distant past.
«If a new theory published last year is correct, then powerful hydrothermal activity could have been occurring since the formation of the moon, possibly as much as the age of the solar system,» he says, adding that which timescale they are working on — tens of millions or billions — could be determined with future research.
A new analysis of Cassini spacecraft data points to the distinct possibility that Saturn's icy moon Enceladus exhibits hydrothermal activity on its seafloor.
«Carbonates support the idea that Ceres had interior hydrothermal activity, which pushed these materials to the surface within Occator.»
This cutaway view of Saturn's moon Enceladus is an artist's rendering that depicts possible hydrothermal activity that may be taking place on and under the seafloor of the moon's subsurface ocean, based on recently published results from NASA's Cassini mission.
On Earth, the most common way to form silica grains of this size is hydrothermal activity under a specific range of conditions; namely, when slightly alkaline and salty water that is super-saturated with silica undergoes a big drop in temperature.
NASA's Cassini spacecraft has provided scientists the first clear evidence that Saturn's moon Enceladus exhibits signs of present - day hydrothermal activity which may resemble that seen in the deep oceans on Earth.
The team describes newly discovered geological and biological manifestations of hydrothermal activity at two sites on young abyssal hills flanking the East Pacific Rise, a fast - spreading portion of the global mid-ocean ridge system.
The authors argue that it comes from hydrothermal activity on the ocean floor, perhaps seafloor vents like those on Earth that spew H2 and support rich microbial life.
The Dawn probe has previously detected salts, ammonia - rich clays and water ice on Ceres, which together indicate hydrothermal activity, says study coauthor Carol Raymond, a planetary scientist
They announced strong evidence for a regional sea in 2014, and more recently, in 2015, they shared results that suggest hydrothermal activity is taking place on the ocean floor.
Hypocenter data for geothermal data system is intended as a tool to identify seismically active areas that are often associated with hydrothermal activity, thus the content model does not include detailed information that would be important for seismological analysis; such information should be accessed by including related resource links.
Hydrothermal activity generates sulfate - rich hydrated mineral deposits along volcanoes, similar to the soil surrounding Hawaiian volcanoes.
Newly discovered geological and biological manifestations of hydrothermal activity at two sites on the sea floor to the west of Central America are reported by Haymon, lead author, and three other UCSB geologists in the February issue of the journal, Geology.
In 2015, the researchers had already shown that there must be hydrothermal activity on Saturn's moon.
Thermodynamic model for uplift and deflation episodes (bradyseism) associated with magmatic - hydrothermal activity at the Campi Flegrei (Italy).
Those analyses are likely to take several weeks, but should provide important insights about the composition of the global ocean beneath Enceladus» surface and any hydrothermal activity occurring on the ocean floor.
But the signal is contested, and there's no evidence yet of hydrothermal activity.
Those investigations showed not only that there was an entire ocean of briny water beneath the ice, but also that hydrothermal activity taking place on and under this alien sea could provide abundant energy and nutrients for ecosystems.
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