Sentences with phrase «smaller quakes»

There was an M5.6 earthquake on 2014-04-30 15:52:40 UTC north of Ascension Island (1.184 ° S 13.455 ° W depth = 10.0 km) followed by smaller quakes throughout May, including an M5.1 one on 2014-05-16 21:11:29 UTC (10.396 ° S, 13.234 ° W depth = 10.0 km).

We have some smaller quakes from time to time still now.

But because a fault system can only release as much energy as is built up by grinding tectonic plates, increasing the frequency of large events means there will be less energy to fuel smaller quakes.

Older crust, which is cooler and denser, was thought to slide much more readily downward, triggering smaller quakes.

There have been thousands of smaller quakes over the past week at Bardarbunga.

Something — perhaps a seamount on the sinking plate — pinned the high - slip patch of fault in place for 500 or 1000 years, they argue, while patches around it failed repeatedly in smaller quakes.

March's huge quake (yellow contours) and past smaller quakes (colored loops) have left a patch of threatening fault (question mark).

The trouble is that large earthquakes generate tectonic waves that ripple around the world's surface and routinely trigger smaller quakes on distant faults, so increased activity in China is hardly a surprise.

New Madrid - area faults produced earthquakes as large as 7 or 8 - magnitude in the early 1800s and have produced smaller quakes since then.

Several smaller quakes also were recorded.

To do that, scientists needed to identify reliable signals that a fault was about to fail: a distinctive flurry of small quakes, a whiff of radon gas oozing from the ground, some oddly perturbed wildlife.

The area experiences about 20 small quakes a year, plus the occasional monster, such as the magnitude 7.3 shake in 1886 that killed 60 people.

For instance, a giant quake off the coast or deep underground may produce only mild shaking in the closest city, while a small quake can wreak havoc if its fault breaks the surface where people live.

The estimations presented by Marco Bohnhoff and his team are based on the analysis of numerous small quakes along the Marmara fault.

The small quakes, which were typically magnitude 3 or 4, occurred along the entire length of the fault line, but each one occurred at the same spot every few years.

The temblor spawned no eruptions, but it set off small quakes all across the western United States, especially near active volcanic and geothermal regions.

That was the unequivocal evidence for the hypotheses postulated by Charles Lyell in his «Principles of Geology»: mountains such as the Andes had not been formed in one colossal upheaval, but grew, barely perceptibly, over the course of millions of years, as the result of countless small quakes, to which Darwin had just been a witness.

Although there is evidence that the ground motions induced by major temblors trigger small quakes thousands of kilometres away, there's no sign that such triggering occurs for large quakes, he adds.

Yet when an Italian commission was convened to assess the situation, one commission member — an engineer and government official — reassured residents that the small quakes were normal or even eased seismic strain.

Research suggests that small quakes immediately raise the risk of a large quake by as much as a thousandfold, says Thomas Jordan, director of the Southern California Earthquake Center, though the probability is still only about 1 percent per day and falls rapidly with time.

The new study found the landslide triggered 16 small quakes.

In recent years, seismologists have realized that the biggest quakes can trigger more quakes thousands of kilometers away, but these are typically small and often located at hot springs or volcanic areas already prone to small quakes.

The volcano trembled back to life with a series of small quakes in the early morning hours of September 23 and has rumbled with seismic swarms ever since.

Records of small quakes can help us gauge how close we are to really big ones, using a technique borrowed from economics and finance

Minutes later, Chengdu experienced its own smaller quake — magnitude 3.9 — that triggered the evacuation of office buildings.

Knowing whether small quakes are foreshocks for a larger temblor is impossible, according to seismologists.

Spokeswoman Julia Jarema says there have already been four small quakes in the North Carolina this year.

The second unknown is the net damage from hundreds of small quakes to structures.

However, even a small quake can cause serious structural damage to your home.

Even small quakes can cause damage, so it's important to make sure your family and your home are prepared and have coverage in case of an earthquake.

Not exact matches

This is just a precaution,» head stonemason Joe Alonso told CNN while holding small pieces that fell during the initial quake.

It was something God could have allowed in small, 2.0 quakes over and over... until the tectonic plates were at rest once again.

On my walk to work I pass a small, historic, blue circular plaque attached to the Quaking Bridge over Castle Mill Stream, Oxford, that states «Buddleja Davidii flowered here from June to Sept 2014».

Some news reports say that there have been over 200 quakes in this valley, all small, but enough to rattle even the calmest nerves.

A surprisingly big quake arrives where smaller ones were expected, as in Japan; an unseen fault breaks far from obviously dangerous faults, as in New Zealand.

Image courtesy of iStockphoto / kickers A magnitude 5.8 earthquake that shook buildings and sent people in New York, Philadelphia, Washington, D.C., and surrounding areas streaming outside into the summer weather on August 23 might seem like small shakes for residents of more quake - prone regions of the nation.

In June 2009 another set of quakes had rustled a small industrial city south of Fort Worth.

After comparing central U.S. earthquakes with tremors in geologically similar parts of the world — and noting that induced quakes, so far, tended to rupture either smaller faults or smaller sections of faults than West Coast quakes — they settled on an upper limit of magnitude 6, which can damage even well - built structures.

More than 700 small to modest - size quakes shook the ground between 1962 and 1966.

The researchers took the 300 - million - year time span and calculated the maximum number of small to medium sized quakes it would take to produce a cumulative offset just shy of 15 meters.

Next, they placed a small nickel - chromium wire fuse at the location where they wanted the epicenter of the quake to be.

Does it regularly give way, occasionally causing small, low - magnitude quakes?

The magnitude 8.2 quake that struck Chile in April was smaller than the major temblor that researchers are anticipating

If he finds such telltale symptoms as frequent small, clustered quakes during the preceding five years, he concludes that there is a high likelihood of a major quake in that region within nine months.

Keilis - Borok bases his work on the tip - of - the - iceberg premise that patterns of small seismic disturbances hint at the onset of much larger quakes.

The earthquake — estimated at magnitude 9.0 on the Richter scale — occurred in a total area much smaller than previous large earthquakes, such as the 8.8 Chilean earthquake last year, arguing that the slippage was much greater for the Japan quake, one of the four most powerful earthquakes on record.

Although such accumulated strain may be released in a series of smaller, less hazardous rumbles, Floyd says that given the historical pattern of major quakes along the North Anatolian Fault, it would be reasonable to expect a large earthquake off the coast of Istanbul within the next few decades.

Smaller faults also exist within plates, and when pressure builds up, they, too, can suddenly give way, causing an intraplate earthquake like the 2011 one centered in Mineral, Va., or the famous New Madrid quakes of 1811 in the Louisiana Territory.

In the months before the big quake, a series of smaller tremors jostled central Italy.

The subsequent real quakes were smaller.