Sentences with phrase «for hydrothermal»

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.

The pathways for the hydrothermal vents at a mid ocean ridge are marked clearly.

But where does the energy for the hydrothermal systems that drive the transport of matter come from?

Heat from the friction of rocks caused by tidal forces could be the «engine» for the hydrothermal activity on Saturn's moon Enceladus.

Puma navigates and hunts for hydrothermal vents using chemical sniffers and lasers to detect smoke traces.

J. H. Waite et al., «Cassini finds molecular hydrogen in the Enceladus plume: Evidence for hydrothermal processes,» Science 356, 6334 (14 April 2017)

Not exact matches

Marbles in metamorphic aureoles and iron - rich skarns appear to be favored sites for gold mineralization in these deposits, perhaps due to the rheological character, permeability after fracturing, and chemical reactivity of those rocks to alteration by hydrothermal fluids.

The hydrothermal vent system was discovered by researchers from the Centre for Geobiology at University of Bergen (Norway).

Biochemists have managed to synthesise 10 of them in experiments that simulate lifeless prebiotic environments, using proxies for lightning, ionising radiation from space, or hydrothermal vents to provide the necessary energy.

Given developing efforts to mine deep - sea hydrothermal vent fields for precious metals, the scientists involved in this research suggest that conservationists and management agencies need to consider a broader range of factors in their efforts to predict the environmental impacts and the resiliency of affected communities.

Farmer helped select the landing site for Mars Pathfinder and thinks that the Mars Surveyor and Mars Odyssey spacecraft now in orbit have begun the job of meeting the first - stage requirements of finding potential ancient hydrothermal systems — for example, the Mars hematite site at Terra Meridiani.

This chemical reaction between rock and water occurs, for example, in hydrothermal vents on the ocean floor.

Impacts exposing subsurface ice deposits and generating hydrothermal activity are one possible explanation for the bright spots and Herschel's water vapor; «cryovolcanoes» that erupt volatiles such as water rather than rock are another.

And other data suggest that this ocean sits on a rocky mantle that could be dotted with hydrothermal vents — potential hotspots for life.

Everything looks fine — except for one segment, which is draped over a previously unknown hydrothermal system.

He is head of the Centre for Geobiology, which examines volcanic hydrothermal activity and the formation of the mineral resources.

It also confirms that hydrothermal vents are a plausible location for at least part of this process to have occurred.

Ancient impact craters on Mars were probably also home to hydrothermal activity, making them good places to search for signs of life, the team reports online February 19 in Geochimica et Cosmochimica Acta.

For more than two decades, scientists studying hydrothermal circulation in the water under the seafloor have assumed that the flow is relatively stable.

A study described here today at the American Geophysical Union's biennial Ocean Sciences Meeting shows that RNA's chemical building blocks fall apart within days to years at temperatures near boiling — a finding that poses problems for some origin of life theories, especially ones picturing that life arose in scalding settings such as deep - sea hydrothermal vents.

Within two years, scientists from the Woods Hole Oceanographic Institution and the University of Maryland will release self - guided robots to visit the hydrothermal vents deep beneath the Arctic ice shelves for the first time.

Steaming hot pools and scalding undersea hydrothermal vents provide a cosy habitat for heat - loving extremists.

Hydrothermal vents may have existed once on Mars and may still exist in an ocean under Europa's icy crust, some scientists say, making them prime targets in the search for extraterrestrial life.

Some impact simulations suggest that these hydrothermal conditions could persist for perhaps thousands of years, making for potentially habitable conditions.

The field work was complemented with high - temperature high - pressure experiments in the laboratory to replicate the hydrothermal observations and to suggest mechanisms for the processes.

We have shown that hydrothermal vent fluids contain almost none of the organic carbon which accumulates in the oceans, which means that vents are a sink for this unreactive «stored» carbon.»

Gravest doubts emerged in 2002, when a team led by Oxford's Professor Martin Brasier (co-author of this current study) revealed that the host rock was not part of a simple sedimentary unit but rather came from a complex, high - temperature hydrothermal vein, with evidence for multiple episodes of subsurface fluid flow over a long time.

While mud volcanoes are fairly common on Java, Lusi is a hybrid between a mud volcano and a hydrothermal vent, and its connection to the nearby volcano will keep sediments cooking for years to come.

The paper, «Coupling Hydrothermal Liquefaction and Anaerobic Digestion for Energy Valorization From Model Biomass Feedstocks,» was co-authored by Rodrigo A. Labatut, Pontifical Catholic University of Chile; Andrew H. Kim; and former post-doctoral researcher Joseph G. Usack.

But this past August, when scientists reported observing water from a hydrothermal vent acting like a liquid and a gas simultaneously at 867 °F, nature had thrown them for a loop.

The results launched a hunt for life's origins that's now uncovering these building blocks in surprising places, like the surface of comets and in deep - sea hydrothermal vents.

«The aqueous product from hydrothermal processing is much better for bugs in anaerobic digestion than using the raw biomass directly.

Cooperation with AVA Biochem is part of comprehensive KIT activities for manufacture of chemical energy carriers as well as intermediates from biomass with emphasis on so - called hydrothermal methods i.e. reactions in water at increased temperatures.

Water locked away in rocks for 1.5 billion years reveals conditions were right for complex organic molecules to form in deep sea hydrothermal vents

At the time of their designation, the largest of the sites was the 95,000 - square - mile Marianas Trench monument near the Northern Mariana Islands and Guam, an area that has been compared to an underwater Yellowstone and Grand Canyon for its unique geology of hydrothermal vents, mud volcanoes and pools of boiling sulfur.

However, potent compounds from the marine environment, especially extreme surroundings such as hydrothermal vents or arctic regions only await to be unveiled which undoubtedly hold promises in the discovery of tyrosinase inhibition, thus opening new perspective for treatment of skin disorders as well as neurodegeneration related diseases.

The NOAA portion of the prize is meant to spur the development of specific technologies that can help detect «sources of pollution, enable rapid response to leaks and spills, identify hydrothermal vents and methane seeps, as well as track marine life for scientific research and conservation efforts,» Richard Spinrad, chief scientist at NOAA, said in a statement.

Such reactions at hydrothermal vents and in other extreme environments on Earth produce high abundances of hydrogen, which some microbes use for food.

In 2009, scientists from Woods Hole Oceanographic Institution embarked on a NASA - funded mission to the Mid-Cayman Rise in the Caribbean, in search of a type of deep - sea hot - spring or hydrothermal vent that they believed held clues to the search for life on other planets.

Finding out how methane and other organic species are formed in deep - sea hydrothermal systems is compelling because these compounds support modern day life, providing energy for microbial communities in the deep biosphere, and because of the potential role of abiotically - formed organic compounds in the origin of life.

But for Van Dover, that value can not compare with the richness of the thriving animal communities inhabiting Earth's hydrothermal vents.

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.

A mysterious glow from deep - sea hydrothermal vents may provide the light source for a newly - discovered bacterium.

Transport by these deep - reaching eddies provides a mechanism for spreading the hydrothermal chemical and heat flux into the deep - ocean interior and for dispersing propagules hundreds of kilometers between isolated and ephemeral communities.

Silica found in the jets can be produced only in water close to boiling point, indicating that hydrothermal vents are also present in the subsurface ocean — making the icy moon a hot target in the search for life.

At the moment, scientists have confirmed, using DNA analysis, that snotworms are closely related to the tubeworms that thrive around hydrothermal vents and probably have existed for as long as whales, if not longer.

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.

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 hydrothermal synthesis of perylene bisimide dyes now shows for the first time that small molecules can also be generated «in the pressure cooker.»

Although the evidence was subsequently contested, some single - celled microbial life lacking a nucleus that segregates their internal DNA or RNA («prokaryotes») from the surrounding cytoplasm may have flourished in darkness within cracks in Earth's seafloor crust and around deep, warm or boiling hot ocean springs (hydrothermal or volcanic vents, such as at Lost City or at black smokers) without a need for light or free oxygen in the oceans or atmosphere.