Sentences with phrase «fault zones»

Finally, one that before the Fukushima fiasco might have been thought obvious; no plants should be built on major fault zones, on tsunami - prone coasts, on eroding seashores or those likely to be inundated before the plant has been decommissioned or any other places which are geologically unsafe.

Their Landslide Hazard Assessment for Situational Awareness (LHASA) model melds information regarding slope, lithology, deforested areas, and proximity to fault zones and roads to derive a map of landslide susceptibility, which is then combined with satellite - derived estimates of precipitation from the past week to develop «nowcasts» of areas that are susceptible to landslides.

One possible cause could be geothermal heat seeping through fault zones.

(Joel Achenbach of the Washington Post has written a nice piece on the superimposition of big cities and fault zones.)

And of course there is also methane venting from unfrozen bottom sediments surrounding fault zones and paleo river beds.

The Rose Canyon and Point Loma fault zones are part of the San Andreas Fault system.

They were already required to test for fault zones and to conduct reviews to ensure there were no conduits for leakage, such as abandoned wells, within a quarter - mile radius.

The team used a submersible pump in deep wells to obtain groundwater samples at depths of 280 to 1,300 meters from seven locations in the fault zones surrounding the epicenter 11 days after the earthquake in April 2016.

Groundwater samples were obtained from seven locations in the Futagawa - Hinagu fault zones in the Kumamoto region.

The analysis reinvigorates a debate about the true level of seismic risk that those fault zones pose.

The team's model could apply to tsunami - forming fault zones around the world, though the characteristics of telltale acoustic signature might vary depending on the geology of the local environment.

A major challenge is to determine how geothermal and magmatic fluids are distributed and stored in the subsurface of Aluto and how they ascend along the mapped fault zones.»

Evaluating the seismic effects of fracking before drilling is particularly important as many Enhanced Geothermal Systems (EGS) or hydrocarbon extraction operations occur in tight rock masses and in close vicinity to fault zones.

The modeling technique presented in this paper is a hydromechanical - coupled dynamic model, which provides unique solutions to the issue of defining risk when drilling near fault zones.

«I wanted to apply what we know from fault zones and earthquakes to glaciology,» Siman - Tov said.

The results are also being compared with findings from other fault zones, such as the San Andreas Fault in California, to better understand the physical processes before an earthquake.

The new study supports the likelihood that these vertical fault zones have displaced the seafloor in the past, which means they could send out tsunami - generating pulses towards the nearby coastal mega-city of Los Angeles and neighboring San Diego.

Their comparisons reveal that strong aftershocks similar to Lushan are likely to occur where there is highest overall aftershock activity, where stress change is the greatest and on well - developed fault zones.

A new study shows that the San Andreas Fault continued to slip gradually for six to twelve years after the 2004 magnitude 6.0 Parkfield, California earthquake, raising the issue of continued damage to structures built across fault zones after damaging earthquakes.

Now, over the coming weeks, a team of international researchers are returning to offshore Sumatra to collect marine sediments, rocks and fluids from this particular zone for the first time to gain a better understanding of the materials and to collect data for predicting how they behave in fault zones to generate large earthquakes.

Further away from these fault zones the ground is generally more quiescent.

The Greenbushes pegmatite deposit intrudes along a major northwest regional fault zone.

If you believe electric vehicles are going to have a significant share of the truck business in 10 years, we are going to be on the right side of the fault zone.

Triumph Gold's Freegold Mountain project is located in the Dawson Range and covers a highly prospective section of the Big Creek fault zone.

Rotary shear experiments reveal the frictional properties of clay - rich material recovered directly from the fault zone.

The Tohoku - oki earthquake occurred along a thin, clay - rich fault zone in the basal strata of the subducting plate.

The largest earthquakes of approximately M 8.0 are exclusively observed along the older eastern section of the fault zone, says Bohnhoff.

«In the eastern portion of the fault zone, individual fault segments are longer and the offsets are larger.»

With the data, they constructed a dynamic picture of the earthquake, which was a rupture of a 20 - by -140-kilometer patch along the Main Himalayan Thrust (MHT)-- a 2200 - kilometer - long fault zone that runs near the southern border of Tibet.

Until then, scientists had assumed the Haiti earthquake involved a simple shift along the Enriquillo - Plantain Garden fault zone, a well - defined, 300 - mile boundary between the North American and Caribbean plates.

In addition to the high clay content, the researchers found that the fault zone was surprisingly thin (less than 5 meters thick).

Chester et al. (p. 1208) describe the structure and composition of the thin fault zone, which is predominately comprised of weak clay - rich sediments.

One of the new papers (Ujiie et al.) presents the results of laboratory experiments on the material recovered from the fault zone.

The Japan Trench Fast Drilling Project rapid response drilling expedition sought to sample and monitor the fault zone directly through a series of boreholes.

J. Casey Moore, a research professor of Earth sciences at UCSC and coauthor of the Chester et al. paper, said he suspects the clay layer observed in the Tohoku fault zone may play an important role in other fault zones.

At the SSA Annual Meeting, Ivan Wong of Lettis Consultants International and colleagues will discuss the detailed forecast from the 2016 report, including their findings that at least 22 large earthquakes have ruptured parts of the Wasatch fault zone between Nephi and Brigham City, Utah in the past 6000 years.

«Longmanshen fault zone still hazardous, suggest new reports.»

UCSC research scientist Patrick Fulton was on board the research vessel Kairei, operated by the Japan Agency for Marine - Earth Science and Technology (JAMSTEC), for the retrieval of the string of pressure and temperature sensors that was installed across the fault zone at about 800 meters beneath the seafloor.

One of the most surprising insights from the latest body of seismic research is that earthquakes can happen in the unlikeliest of places, far from a fault zone.

After being tossed about and damaged by the tsunami that devastated northeastern Japan on March 11, Japan's drilling ship the Chikyu has been given an especially fitting assignment: to drill into the fault zone and take temperature measurements near the epicentre of the magnitude - 9.0 Tohoku earthquake that caused the tsunami.

Liverpool Seismologist, Stephen Hicks from the School of Environmental Sciences, who led the research, said: «It was previously thought that dense geological bodies in an active fault zone may cause more movement of the fault during an earthquake.»

«It would be a great disservice to society if we did not learn as much as possible from the fault zone heated by this huge earthquake,» says Kiyoshi Suyehiro, president and chief executive of the management group of the Integrated Ocean Drilling Program (IODP).

Earthquake researchers have now identified a 30 kilometers long and ten kilometers deep area along the North Anatolian fault zone just south of Istanbul that could be the starting point for a strong earthquake.

If the fault zone does not have hydrous phases or carbonates, the sudden heating that begins when sliding starts raises the local temperature on the fault all the way to the melting temperature of the rock.

In that case, when the next earthquake comes, the fault zone is ready with clays and other phases that can break down, and the process repeats itself.»

As shallow earthquakes start, the temperature rises locally until it is hot enough to start a chemical reaction — usually the breakdown of clays or carbonates or other hydrous phases in the fault zone.

The new research also explains why faults with glass on them (reflecting the fact that during the earthquake the fault zone melted) are rare.

As earthquakes get started, local extreme heating takes place in the fault zone.

«The reason this does not happen often, that is, the reason we do not see lots of faults with glass on them, is that the Earth's crust is made up to a large degree of hydrous and carbonate phases, and even the rocks that don't have such phases usually have feldspars that get crushed up in the fault zone,» Green explained.

The silent earthquakes may then take place when a batch of fluid from the slab is working its way up — as the fluid passes, it will unclamp the fault zone a little bit, perhaps allowing some slow slip.