Sentences with phrase «rising plumes»
The phrase "rising plumes" refers to columns or streams of something, like smoke, water, or dust, that are going up into the air. They are called "rising" because they move upward and "plumes" because they appear in a shape like a feather or a fountain. Full definition
Back in the 1970s, geophysicist Jason Morgan — the father of plate tectonics — posited that hotspots were caused by rising plumes of superheated magma that originated deep in the outer core.
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Sinking slabs of ocean crust and rising plumes of hot rock in Earth's mantle are observed to behave differently below one megameter (1,000 kilometers) depth.
«While explaining one mystery — the behavior of rising plumes and sinking slabs — our results lead to a new conundrum,» Lekic said.
Similarly, rising plumes of molten rock encounter the same layer and have difficulty punching through from below.
She noted that if higher temperature alone were responsible for the rising plumes, they would be only 100 - 200 kilometers wide, ballooning out only when they approach the surface.
With no rising plumes of warm air to carry moisture into the stratosphere, clouds almost never form; the stratosphere is drier than most deserts.
Their shape and movement result from a devilishly complex interaction between the rising plume and the sideways rotation of the planet.
Some recent studies reproduced key geophysical factors in a laboratory setting, including a rising plume and a sinking oceanic plate.
Now, a computer modeling approach, developed by University of Maryland seismologist Vedran Lekic and colleagues at the University of California Berkeley, has produced new seismic wave imagery which reveals that the rising plumes are, in fact, influenced by a pattern of finger - like structures carrying heat deep beneath Earth's oceanic plates.
Rising plumes of relatively warm, but still solid, ice may produce pockets of liquid water tantalizingly close to the satellite's surface, but new research suggests that any such surface reservoirs won't stick around for long, geologically speaking.
In Iceland, the Grimsvotn volcano, buried miles beneath the ice sheet, melts the ice cap above it in the same way that the rising plumes might melt Europa's shell, causing the surface of the Icelandic ice sheet to cave in.
The authors note that this ULVZ's location, shape and large diameter, which is proportionate with the width of the plume higher up in the lower mantle, suggests a close link between the ULVZ and the rising plume above it.
The giant volcano lurking under the state of Wyoming might not have originated from a rising plume of hot rock, as previously thought
Manga, who models the internal heat flow of Mars, such as the rising plumes of molten rock that erupt into volcanoes at the surface, tried to explain the irregular shorelines of the plains of Mars 11 years ago with another theory.
But in reality, rising plumes that form turbulent storm clouds can often carry raindrops, snowflakes, and even hailstones upward before they fall out.
They will increasingly bring in water from beside the rising plume.