Earthquakes

Earthquakes

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Earthquakes News -- ScienceDaily Earthquake News. Early detection, historic earthquakes, earthquake measurement, smart building methods and more in our earthquake research news.

  • Rates of great earthquakes not affected by moon phases, day of year
    on January 16, 2018 at 6:13 pm

    There is an enduring myth that large earthquakes tend to happen during certain phases of the Moon or at certain times during the year. But a new analysis confirms that this bit of earthquake lore is incorrect. […]

  • Further reducing injections of oilfield wastewater can prevent larger earthquakes
    on January 10, 2018 at 4:29 pm

    The study indicates that tracking annual data on the injection well locations can help predict how corresponding earthquake activity will change. […]

  • Earthquakes as a driver for the deep-ocean carbon cycle
    on January 10, 2018 at 3:09 pm

    Geologists have used novel methods to analyze sediment deposits in the Japan Trench in order to gain new insights into the carbon cycle. […]

  • Shakedown in Oklahoma: To cut the number of bigger earthquakes, inject less saltwater
    on January 5, 2018 at 1:23 pm

    In Oklahoma, reducing the amount of saltwater (highly brackish water produced during oil and gas recovery) pumped into the ground seems to be decreasing the number of small fluid-triggered earthquakes. But a new study shows why it wasn't enough to ease bigger earthquakes. […]

  • Heat from below Pacific Ocean fuels Yellowstone, study finds
    on December 18, 2017 at 5:03 pm

    Recent stories in the national media are magnifying fears of a catastrophic eruption of the Yellowstone volcanic area, but scientists remain uncertain about the likelihood of such an event. To better understand the region's subsurface geology, geologists have rewound and played back a portion of its geologic history, finding that Yellowstone volcanism is more far more complex and dynamic than previously thought. […]

  • Residual strain despite mega earthquake
    on December 13, 2017 at 5:00 pm

    On Christmas Day 2016, the earth trembled in southern Chile. In the same region, the strongest earthquake ever measured occurred in 1960. A comparison of data from seismic and geodetic measurements during and after both earthquakes shows that the energy released by the 2016 quake accumulated over more than 56 years. According to this, the 1960 quake, despite its immense strength, must have left some strain in the underground. […]

  • The origin of the Andes unravelled
    on December 11, 2017 at 5:03 pm

    Why do the Andes exist? Why is it not a place of lowlands or narrow seas? A geophysicist has been pondering these questions for more than a decade. Now, he has found the answers using an advanced computer model. […]

  • West coast earthquake early warning system continues progress toward public use
    on December 6, 2017 at 9:23 pm

    A decade after beginning work on an earthquake early warning system, scientists and engineers are fine-tuning a US West Coast prototype that could be in limited public use in 2018. […]

  • Unearthing the underground effects of earthquakes and volcanoes
    on December 6, 2017 at 5:25 pm

    Researchers analyzed high-resolution seismic velocity data from 36 seismograph stations across the island of Kyushu to identify variations before, during, and after the MW 7.0 2016 Kumamoto earthquake. Velocity decreased in the region of the rupture fault when the earthquake struck, and then gradually recovered, although this recovery showed spatial variability. This variability corresponded to aftershock concentration and volcanic activity. The findings may be useful for disaster prediction and preparedness. […]

  • Dark fiber: Using sensors beneath our feet to tell us about earthquakes, water, and other...
    on December 5, 2017 at 2:36 pm

    Scientists have shown for the first time that dark fiber -- the vast network of unused fiber-optic cables installed throughout the country and the world -- can be used as sensors for detecting earthquakes, the presence of groundwater, changes in permafrost conditions, and a variety of other subsurface activity. […]

  • Earthquakes in the Himalaya are bigger than in the Alps because tectonic plates collide faster
    on December 4, 2017 at 2:18 pm

    Earthquakes that happen in densely populated mountainous regions, such as the Himalaya, spell bigger earthquakes because of a fast tectonic-plate collision, according to a new study. […]

  • New early gravity signals to quantify the magnitude of strong earthquakes
    on November 30, 2017 at 7:10 pm

    After an earthquake, there is a disturbance in the field of gravity almost instantaneously. This could be recorded before the seismic waves. Researchers have managed to observe these weak signals and to understand where they come from. Because they are sensitive to the magnitude of earthquakes, these signals may play an important role in the early identification of the occurrence of a major earthquake. […]

  • Mass of warm rock rising beneath New England
    on November 30, 2017 at 2:41 pm

    Slowly but steadily, an enormous mass of warm rock is rising beneath part of New England, although a major volcanic eruption isn't likely for millions of years, a new study suggests. The research is unprecedented in its scope and challenges textbook concepts of geology. […]

  • North Texas earthquakes occurring on 'dead' faults, seismology research shows
    on November 29, 2017 at 7:33 pm

    Recent earthquakes in Texas' Fort Worth Basin - in the community of Venus and the Dallas suburb of Irving - occurred on faults not active for at least 300 million years, according to research. The research supports the assertion that recent North Texas earthquakes were induced, rather than natural. The conclusion is entirely independent of previous analyses correlating seismicity to the timing of wastewater injection practices, but corroborates those earlier findings. […]

  • Parkfield segment of San Andreas fault may host occasional large earthquakes
    on November 29, 2017 at 5:02 pm

    Although magnitude 6 earthquakes occur about every 25 years along the Parkfield Segment of the San Andreas Fault, geophysical data suggest that the seismic slip induced by those magnitude 6 earthquakes alone does not match the long-term slip rates on this part of the San Andreas fault. […]

  • Geophysicists uncover new evidence for an alternative style of plate tectonics
    on November 28, 2017 at 6:56 pm

    Scientists have determined that a volcano and mountain plateau across Turkey formed not by the collision of tectonic plates, but by a massive detachment of plate material beneath Earth's surface. They propose that uplift of the Central Anatolian Plateau over 10 million years was caused by a dripping of the deep lithosphere. It first formed an above-ground basin which sprang up when the weight below broke off and sank into the depths of the mantle. […]

  • Is Agung going to blow?
    on November 28, 2017 at 4:35 pm

    With Mount Agung on eruption watch in Bali, a researcher notes that monitoring emissions from the volcano may aid volcanologists in determining whether or not an Agung eruption is imminent. […]

  • Mysterious deep-Earth seismic signature explained
    on November 22, 2017 at 6:14 pm

    New research on oxygen and iron chemistry under the extreme conditions found deep inside the Earth could explain a longstanding seismic mystery called ultralow velocity zones. The findings could have far-reaching implications on our understanding of Earth's geologic history, including life-altering events such as the Great Oxygenation Event, which occurred 2.4 billion years ago. […]

  • Seafloor sediments appear to enhance Earthquake and Tsunami danger in Pacific Northwest
    on November 20, 2017 at 5:45 pm

    The Cascadia Subduction Zone off the coast of the Pacific Northwest has all the ingredients for making powerful earthquakes -- and according to the geological record, the region is due for its next 'big one.' A new study has found that the occurrence of these big, destructive quakes and associated devastating tsunamis may be linked to compact sediments along large portions of the subduction zone. […]

  • Structure and origins of glacial polish on Yosemite's rocks
    on November 15, 2017 at 6:38 pm

    The glaciers that carved Yosemite Valley left highly polished surfaces on many of the region's rock formations. These smooth, shiny surfaces, known as glacial polish, are common in the Sierra Nevada and other glaciated landscapes. Geologists have now taken a close look at the structure and chemistry of glacial polish and found that it consists of a thin coating smeared onto the rock as the glacier moved over it. […]

  • Largest, longest multiphysics earthquake simulation created to date
    on November 13, 2017 at 4:10 pm

    A multi-disciplinary team has simulated the largest, longest multiphysics earthquake simulation to date. […]

  • Why did the Earth's ancient oceans disappear?
    on November 9, 2017 at 2:38 pm

    We think of oceans as being stable and permanent. However, they move at about the same speed as your fingernails grow. Geoscientists have now found a novel way of mapping the Earth's ancient oceans. […]

  • Japanese earthquake zone strongly influenced by the effects of friction
    on October 26, 2017 at 5:52 pm

    Researchers have identified that subduction-related friction and pre-existing fault structures in the Eurasian/Philippine Sea plate boundary significantly influences earthquake location and rupturing behavior. The degree of friction decreases towards the Nankai Trough, resulting in non-uniform stress accumulation that has influenced the location of historic and modern earthquakes in the region. […]

  • Raton Basin earthquakes linked to oil and gas fluid injections
    on October 24, 2017 at 6:17 pm

    A rash of earthquakes in southern Colorado and northern New Mexico recorded between 2008 and 2010 was likely due to fluids pumped deep underground during oil and gas wastewater disposal, suggests a new study. […]

  • Supercomputers help scientists improve seismic forecasts for California
    on October 24, 2017 at 5:37 pm

    Researchers have used the Stampede1 and 2 supercomputers to complete one of the world's largest earthquake simulation models: The Uniform California Earthquake Rupture Forecast (UCERF3). The simulations showed that in the week following a magnitude 7.0 earthquake, the likelihood of another magnitude 7.0 quake in California would be up to 300 times greater than the week before. […]

  • Western US Quake? Fifty simulations of the 'Really Big One' show how a 9.0 Cascadia earthquake...
    on October 23, 2017 at 2:18 pm

    The largest number yet of detailed simulations for how a Cascadia Subduction Zone earthquake might play out provides a clearer picture of what the region can expect when the fault unleashes a 9.0 earthquake. […]

  • Geophysicist finds teaching opportunities in movie mistakes
    on October 23, 2017 at 1:46 pm

    Few scientists regard the 1997 movie Volcano, in which flaming magma suddenly spews from the La Brea tar pits and incinerates much of Los Angeles, as a means to foster scientific literacy. After all, Southern California has no magma to spew. But one geophysicist sees it differently. […]

  • Scientists determine source of world's largest mud eruption
    on October 17, 2017 at 3:43 pm

    More than 11 years after the Lusi mud volcano first erupted on the Indonesian island of Java, researchers may have figured out why the mudflows haven't stopped: deep underground, Lusi is connected to a nearby volcanic system. […]

  • Waves in lakes make waves in the Earth
    on October 16, 2017 at 12:19 pm

    Scientists report that small seismic signals in lakes can aid science. As a record of wave motion in a lake, they can reveal when a lake freezes over and when it thaws. And as a small, constant source of seismic energy in the surrounding earth, lake microseisms can shine a light on the geology surrounding a lake. […]

  • Combination of El Niño and 2016 Ecuador earthquake likely worsened Zika outbreak
    on October 13, 2017 at 12:02 am

    A Zika virus outbreak in coastal Ecuador in 2016 was likely worsened by a strong El Niño and a magnitude 7.8 earthquake that struck the region in April, according to a new study. […]