Sentences with phrase «of plate motions»

This implies that the timing of plate motions is not globally uniform.

«Normally, earthquakes occur naturally because of plate motions,» says Katie Keranen, a geophysics professor at Cornell University and the study's lead author.

«It was as if I was seeing the «ghosts» of ancient mantle flow patterns, recorded in the geologic record of plate motions!»

Not exact matches

or — on the basis of our Israeli license plates — to a simple wave of the hand motioning us through.

In one slow motion, I flipped half of the cake onto the plate and half of into onto the floor.

Today, scientists know that Earth's outer layer is divided into giant pieces and that the motion of tectonic plates — as they bump together or slide past each other — helps explain how some earthquakes occur.

If this hotspot motion is considered, only a smaller change of Pacific plate motions is needed to explain the volcano chain.

Finding that rift helped to prove the existence of plate tectonics and that Earth's surface is shaped by the motion of vast subsurface forces.

The system also includes strong motion instruments placed further inland, closer to Mexico City, that monitor «in slab» seismicity; that is, earthquakes within the part of the Cocos plate that is already buried beneath the North American Pplate that is already buried beneath the North American PlatePlate.

Recent studies have suggested that apparently two processes were effective: On the one hand, the Pacific Plate has changed its direction of motion.

«These new results are important for understanding plate tectonics, the theory of which argues that Earth's lithosphere consists of rigid plates that glide on the hotter and less rigid asthenosphere that serves as a lubricant, enabling plate motion.»

The work revealed an underlying layer of partially melted rock, 100 kilometers belowground and 10 kilometers thick, that lubricates the motion of the Pacific Plate (SN: 3/7/15, p. 6).

The study finds, however, that the direction of the crystals doesn't correlate with the apparent plate motion at any depth in the asthenosphere.

The Earth's lithosphere is divided into several plates that are in constant motion, and today's geologists have a good understanding of what drives these plate movements: heavier ocean plates are submerged beneath lighter continental plates along what are known as subduction zones.

«Here's an archipelago of volcanic islands that are broadly active over a large region, and the plume is almost decoupled from the plate motion itself,» Toomey said.

The ability to send large amounts of energy across greater physical distance to in - motion platforms from low cost charging plates could one day allow the technology to expand beyond small consumer electronics like cell phones and begin powering bigger things like automobiles.

This conveyor - belt motion causes the crust's tectonic plates at the surface to jostle against each other, a process that has continued for at least half of Earth's 4.5 billion - year history.

Using geological and geophysical data from the New Guinea region, Schellart was able to reconstruct the geological evolution of the region over the last 70 million years, including the motion of the tectonic plates and plate boundaries.

The scientists who deployed these GPS receivers expected to see both the slow, relentless motion of the planet's shell of tectonic plates and the relatively quick movements that earthquakes and volcanoes trigger.

«While the Himalayas are the prime example of continent - continent collisions that take place due to plate tectonic motion today, our work suggests plate tectonics operated far, far back into the geologic past,» Frost says.

Or, is there also a source of positive buoyancy arising from heat at the base of the mantle associated with heat extracted from the core and, if so, how much does it contribute to plate motions?

On Earth, the motion of magma in the mantle pushes continental plates around on the surface, but if the magma became too hot and runny it would lose the grip needed to do this.

A large earthquake on a «weak» fault releases most of the stress, and before the next large earthquake the stress is reloaded due to motion of Earth's tectonic plates.

«The deflection of the plumes into these finger - like channels represents an intermediate scale of convection in the mantle, between the large - scale circulation that drives plate motions and the smaller scale plumes, which we are now starting to image.»

Heavy landforms like the Himalayas slow the motion of a tectonic plate, essentially pinning it down.

«This global pattern of finger - like structures that we're seeing, which has not been documented before, appears to reflect interactions between the upwelling plumes and the motion of the overlying plates,» Lekic said.

And they also show that the fingers align with the motion of the overlying tectonic plate.

Using underwater microphones, motion sensors and high - speed videos, she observed that lobsters produce their typical noise by rubbing the plectrum against the equivalent of a stringa smooth plate tissue covered with microscopic ridges located just below the eye.

«With some mathematical work, I described the plate tectonic «quadrupole», which defines two points of «net convergence» and two points of «net divergence» of tectonic plate motions.»

More importantly, Clinton Conrad, Associate Professor of Geology at the University of Hawaii — Manoa's School of Ocean and Earth Science and Technology (SOEST) and colleagues revealed that these upwelling locations have remained remarkably stable over geologic time, despite dramatic reconfigurations of tectonic plate motions and continental locations on the Earth's surface.

Because plate motions are merely the surface expression of the underlying dynamics of the Earth's mantle, Conrad and his colleagues were able to infer that upwelling flow in the mantle must also remain stable over geologic time.

«It can track the motion of tectonic plates to explain the formation of oceans and mountain ranges as these plates break apart and crash into one another, and even holds far - reaching implications for the distribution of animal species and Earth's climate though time.»

«This work highlights how the motion of tectonic plates and their related landmasses are intricately linked to the motion of other plates and plate boundaries surrounding them, and those further afield,» he said.

The creation and destruction of ocean basins makes plate motion possible.

Now Yoshida and Madhava Santosh of Kochi University, Japan, have modelled how convection in the mantle — including the superplumes — will drive plate motion over the next 250 million years.

Geophysicists have traced the process back to early in Earth's history by measuring magnetic fields in ancient rocks, and some have attempted to extrapolate from the present motion of the plates the likely shape of the next supercontinent.

«The changes in the motion of the two plates were in sync although counter to each other.»

In this case, Mitchell and his team suggest that the rates of Gondwana's motion exceed those of «normal» plate tectonics as derived from the record of the past few hundred million years.

As the Pacific Plate continues to move west - northwest, the Island of Hawaii will be carried beyond the hotspot by plate motion, setting the stage for the formation of a new volcanic island in its pPlate continues to move west - northwest, the Island of Hawaii will be carried beyond the hotspot by plate motion, setting the stage for the formation of a new volcanic island in its pplate motion, setting the stage for the formation of a new volcanic island in its place.

A sharp bend in the chain indicates that the motion of the Pacific Plate abruptly changed about 43 million years ago, as it took a more westerly turn from its earlier northerly direction.

We can even directly measure the motion of Earth's great tectonic plates and reconstruct their movements through time.

The Earth's lithosphere is a patchwork of plates in slow but constant motion caused by the release to space of the heat in the Earth's mantle and core.

The high proper motion of this system was probably discovered by Willem Jacob Luyten (1899 - 1994), who found the proper motions of over 520,000 stars despite the loss of sight in one eye since 1925 by building an automated photographic plate scanner and measuring machine.

The high proper motion of this dim star was probably discovered by Willem Jacob Luyten (1899 - 1994), who found the proper motions of over 520,000 stars despite the loss of sight in one eye since 1925 by building an automated photographic plate scanner and measuring machine.

The consensus is that several factors are important: atmospheric composition (the concentrations of carbon dioxide, methane); changes in the Earth's orbit around the Sun known as Milankovitch cycles (and possibly the Sun's orbit around the galaxy); the motion of tectonic plates resulting in changes in the relative location and amount of continental and oceanic crust on the Earth's surface, which could affect wind and ocean currents; variations in solar output; the orbital dynamics of the Earth - Moon system; and the impact of relatively large meteorites, and volcanism including eruptions of supervolcanoes.

-- «on Palomar survey plates with an interval of 15 years, give 0.63» in 207 degrees thus fully confirming van Biesbroek's measure»), the proper motion of Gamma Leporis itself is given as 0.47» in 219 degees, and its parallax as 0.122».

In order to allow for full range of motion I will use a couple of 25 - lb plates that I will put next to each other in order to put the ball of my feet on them and have my heels go down (thus giving me a much needed stretch).

Placed weight (plates, dumbbells, kettlebells) on the front portion of your quads above your knees and then raise your calves up through the full range of motion for the desired number of reps.

Features: Some features include forward / backward pedaling motion option, a variety of workout programs available, heart rate sensor, MP3 capabilities, extra large cup holder, built - in towel hook and a fan, cushioned foot plates for added comfort, programmable computer for inputting data to monitor and keep track of your work out.

Placing the bar on blocks or plates at 2» -6», shortening the range of motion, is another option.