Sentences with phrase «hydrothermal flow»

Marine geological and geophysical exploration methods, ocean ridge processes, continental margin processes, slope stability, marine mineral resources, seafloor hydrothermal systems, acoustic imaging and quantification of hydrothermal flow

The major influences on ocean chemistry today are hydrothermal flow (hot water that has circulated through the crust) and surface weathering (the river transport of material eroded from land into the ocean).

The bladed barite would represent a mix of ocean chemistry and hydrothermal flow.

«When people were thinking about ocean chemistry, it was always centered on hydrothermal flow, but there was little data,» Johnson says.

Not exact matches

We started finding the same organisms that people were reporting from deep - sea hydrothermal vents [where hot, mineral - laden fluid flows through volcanic rock into the ocean from deep within the Earth].

As the hot hydrothermal fluid flows through this mud, it «cooks» organic material, forming methane (natural gas) and oil - like hydrocarbons.

In the third type of vent environment, «hydrothermal seeps,» much cooler (less than 30 - 60 degrees Celsius) water trickles out of lava flows interleaved with seafloor mud.

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

According to a report in today's issue of the journal Nature, that modest rumble caused 10-fold increases in the flow of fluids in hydrothermal vent systems located nearly five miles away.

The models reveal a «hydrothermal siphon» driven by heat loss from deep in the Earth and the flow of cold seawater down into the crust and of warmed water up out of the crust.

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.

«Hydrothermal siphon» drives water circulation through seafloor: New study explains previous observations of ocean water flowing through the seafloor from one seamount to another.»

Scientists working off the California coast use chemical - sniffing probes, robotically driven subs, and seafloor - tethered temperature sensors to watch flows of lava pave over a once - thriving ecosystem at hydrothermal vents several kilometers below the ocean's surface.

Acoustic visualization and mapping of hydrothermal vent flows on the East Pacific Rise and the Juan de Fuca Ridge.

After analyzing the water temperatures and the locations of the eggs, the researchers realized that these littered in hot water around known locations of hydrothermal vents, an opening in the sea floor out of which geothermally heated water flows.

This Website offers information and resources for studying seafloor animals, hydrothermal vents, mid-ocean ridges, axial volcano, lava flow, and tools and technology.

Unfortunately, conductive heat flow versus age data do not confirm the cooling models because much of the heat is advected by hydrothermal circulation near the ridge axes (Hofmeister and Criss, 2005; Pollack et al., 1993).