Articles tagged with Tsunamis
A new study from Harvard T.H. Chan School of Public Health found that elderly people displaced by disasters may experience increased symptoms of dementia. Those who lost touch with neighbors and reported depression had the highest levels of cognitive decline.
The collaboration aims to refine national seismic hazard models by sharing expertise and research topics. The focus section discusses different modeling approaches and primary audiences, providing insights into the consequences of similar megathrust earthquakes in each region.
A new Kyoto University DNA test can identify disaster victims and confirm relatedness between distant relatives like second cousins with nearly 100% accuracy using a simple swab sample.
Researchers found that seawalls higher than 5 meters reduce damage and death from tsunamis, while coastal forests also play a protective role. The analysis showed a significant decrease in destruction rates with increased seawall height and a reduced risk of death and destruction in areas with extensive coastal forest coverage.
Researchers found that calcareous sediments, not clay-rich sediments, are the most likely candidates for the first breakage of an earthquake. The study suggests that these sediments form a weak point in the rock sequence, leading to shallow earthquakes and tsunamis.
A Kyoto University study shows tsunami-borne EM fields can extract key information about earthquake hypocenters, including fault dip direction, which helps with early warning systems. This discovery could lead to improved tsunami forecasting and timely evacuations.
Scientists at the Australian National University have created a new algorithm that can accurately predict tsunamis by analyzing real-time ocean sensor data. The Time Reverse Imaging Method takes data from sensors to recreate what the tsunami looked like when it was born, allowing for better predictions of its trajectory.
Scientists found evidence of two mega-tsunamis on Mars, triggered by meteorite impacts, which formed cold salty oceans conducive to sustaining life. The research reveals ancient ocean characteristics, including icy lobes with briny waters, providing a potential refuge for life in extreme environments.
Researchers have discovered a slow-slip event that lasted two weeks, resulting in 15-20 centimeters of movement along the fault. The finding increases understanding of the relationship between slow slip and normal earthquakes, highlighting the potential for using offshore monitoring systems to predict damaging earthquakes.
A slow slip event in New Zealand's Hikurangi margin showed that subduction plates may be accumulating much more stress and strain than previously thought. This finding helps assess earthquake occurrence risk in coastal areas near subduction zones, especially at locations of shallow depth.
Scientists are evolving plans for managing tsunami risk on the US Pacific coastline, using historic data and new technologies like camera-bearing drones. California officials are refining their response playbooks after the 2011 Tohoku earthquake, while geologists search for evidence of past tsunamis to better estimate risks.
A new study suggests that real-time GPS data can be used to estimate how an earthquake deforms the sea floor, cutting tsunami warning times by nearly 20 minutes. This allows for more accurate warnings to be issued within two to three minutes, potentially saving lives.
Scientists have discovered geological evidence of frequent large tsunamis in the Aleutian Islands, posing a new hazard to the Pacific basin. The study reveals that a creeping section of the Aleutian Subduction Zone fault could generate earthquakes great enough to trigger devastating tsunamis.
Researchers used 3D laser scanning to measure surface deformation after the 2014 South Napa earthquake, revealing complex deformation patterns that challenge traditional notions of topography formation. The study also found evidence of 'afterslip' effects that can occur hours to years after an earthquake.
The Great Barrier Reef is proving to be a valuable natural defense against landslide-induced tsunamis, according to new research. The reef's ability to absorb wave energy has been shown to reduce the impact of such events on coastal communities.
Researchers at the University of Liverpool have discovered a previously undetected earthquake that occurred just 12 seconds after a magnitude 7 earthquake in Chile. The 'closely-spaced doublet' increases the risk of larger-than-expected tsunamis, complicating tsunami early warning systems.
Researchers used Google Street View images to assess damage to buildings after a major natural disaster. The study found that online images could be used to identify material and form of structures that remained standing, providing valuable information for future design guidelines.
A study by Plymouth University suggests that Japan's new sea defense plans could be shared with other nations to improve their preparedness for tsunamis. The research analyzed Japan's history of coastal defense design and measures taken since 2011, highlighting the country's progress in mitigating tsunami impacts.
Scientists found evidence of an 800-foot wave in the Cape Verde Islands that suggests sudden volcanic collapses can trigger giant tsunamis. The study suggests these events are more common than previously thought and could pose a realistic hazard today.
A Northwestern University expert found mixed results on human preparedness for tsunamis, with significant progress made in tsunami science and education. However, substantial challenges remain, including the impact of 'tsunami earthquakes' and the need to incorporate new knowledge into warning procedures.
The study found that critical backup generators were built in low-lying areas at risk for tsunami damage despite warnings from scientists. The researchers identified arrogance, ignorance, design flaws, and regulatory failures as key factors leading to the disaster.
Researchers developed a model to simulate Mediterranean tsunami impact, showing how waves would hit and flood coastal areas in southern Italy and Greece. The study highlights the need for local authorities to identify vulnerable areas and plan defense strategies.
Researchers used computer models to simulate a tsunami generated by an earthquake in the Ventura basin, finding that it could inundate parts of the regional coastline several kilometers inland. The study highlights the potential for significant tsunami hazards in the area and emphasizes the need for full hazard assessments.
The Cascadia Initiative has deployed seismometers onshore and offshore to monitor the Cascadia subduction zone. The project provides a clearer picture of the region's seismic risk, including undetected small earthquakes and new offshore structures. The initiative also offers insights into tsunami detection and seismic wave readings.
Researchers investigate granitic rocks in El Capitan using field mapping, rock climbing, and geochemical analyses. They found no systematic patterns in rock composition, challenging models of granite formation that rely on magma chambers.
A new study published in PLOS ONE found that community participation and social networks can aid preparedness to natural disasters such as tsunamis in vulnerable regions. People who participate in social activities are more likely to plan and prepare for future disasters, including having a family emergency plan or disaster supplies kit.
Researchers studied earthquake history in the eastern Indian Ocean, tracing modes of coastal sedimentation over time. They discovered seven subduction zone earthquakes recorded 3,800 to 7,500 years ago, indicating past tsunamis occurred approximately four to six times.
Researchers found a large, wedge-shaped berm about 15 feet above sea level, with washing machine-sized stones, indicating an ancient tsunami. The berm stretches for at least 30 miles along the Caribbean coast near Cancun and Playa del Carmen.
Researchers are studying the dynamic behavior of a large rhyolitic system at Laguna del Maule, where magma is rising to depths of 5km. The study aims to understand how these systems form and erupt to better predict potential caldera-forming eruptions.
A University of South Florida-led team has discovered that subtle shifts in the earth's offshore plates can predict the size of future disasters. The researchers used high precision GPS to measure slight shifts on a fault line in Costa Rica, finding that slow slip events can release stress and strain before major earthquakes and tsunamis.
A new study challenges a long-held belief that offshore islands protect the mainland from tsunamis. Instead, islands focus the energy of the tsunami, increasing flooding on the mainland by up to 70 percent. Researchers used machine learning to analyze various island geometries and found that this setup amplifies tsunami power.
Researchers used powerful lasers to create colliding jets of plasma, mimicking cosmic explosions and planetary cores. They also recreated a tiny laboratory version of solar flares and stellar explosions, creating a gigantic plasma tsunami in space.
The nation's first tsunami evacuation refuge is being built in Washington state to shelter over 1,000 people within a 20-minute walking distance. The vertical structure will be the roof of an elementary school gym, designed to withstand massive earthquakes and storm surges.
A recent study has found evidence of a massive tsunami that struck the Hawaiian islands around 500 years ago, with waves reaching up to nine meters high. The discovery has prompted officials to revise their tsunami evacuation maps to account for the possibility of an extreme tsunami hitting the county.
A new study on the Indian Ocean reveals that Sri Lanka and surrounding regions are susceptible to large tsunamis with varying time periods between events. Researchers analyzed sediment cores, finding a 1000-year period without a tsunami, nearly twice as long as the lull period prior to the 2004 earthquake.
Researchers used leaf vein density to study stratified forests with canopy-dominant flowering plants. They found that venation density is higher in leaves from the forest canopy and decreases towards lower levels. This pattern suggests that flowering plants emerged in the upper forest canopy by the Paleocene, around 58 million years ago.
Researchers used clumped isotope thermometry to reconstruct the Zhada basin's paleo-elevation history, finding a significant drop of over 1 km in elevation between three and nine million years ago. This suggests that the modern high elevations were not recently developed but rather a continuation of higher elevations prior to the Indo-...
Researchers from Imperial College London and GNS Science have discovered that tsunami earthquakes may be caused by extinct undersea volcanoes causing a 'sticking point' between tectonic plates. This release of energy led to the formation of large tsunamis, as seen in rare events off New Zealand's north island in 1947.
A revised Australian tsunami database, updated by UNSW researchers, has revealed up to 145 possible tsunamis since prehistoric times, with 11 reported deaths in Australia. The database indicates the east coast faces the most significant risk from tsunamis.
Researchers will simulate the impact of tsunamis on urban areas, modeling how water channels around clusters of buildings. The facility aims to produce engineering guidelines to mitigate future tsunami impacts. The research has far-reaching implications for building and urban design in tsunami-prone areas.
A new design for nuclear plants built on floating platforms could provide enhanced safety, as they would be automatically cooled by surrounding seawater in a worst-case scenario. The concept takes advantage of mature technologies and minimizes technological risks.
A new study conducted by Brigham Young University professor Niwako Yamawaki found that nearly half of Hirono's survivors experienced clinically concerning PTSD symptoms. Eating right and exercising regularly were identified as key factors in fostering resilience among disaster survivors.
The IPRC Ocean Drift Model has been charting the possible paths of tsunami driftage for nearly 3 years, improving its accuracy by accounting for different shapes and buoyancies. The model predicts the type and timing of material that washes up along windward shores, including oyster buoys, crates, and wood pieces from Japan.
The study highlights the effectiveness of traditional institutions like Fa'aSamoa and The Samoan Way in responding to natural disasters. These community-based approaches have strong social capital and can be leveraged in disaster management policies and programs, providing a 'win-win' scenario.
The American Geophysical Union (AGU) has honored four journalists for their outstanding coverage of Earth and space sciences. Geoffrey Haines-Stiles and Erna Akuginow have won the Robert C. Cowen Award for Sustained Achievement in Science Journalism, while freelance writer Tim Folger received the Walter Sullivan Award for Excellence in...
Researchers from UCL's Mullard Space Science Laboratory used data from the Japanese Hinode spacecraft to measure the Sun's magnetic field. The study found that the field is approximately ten times weaker than previously estimated.
Researchers investigate strain localization, atmospheric CO2, and ultra-high pressure metamorphism, shedding light on geological phenomena. Intensified Southern Hemisphere Westerlies are found to regulate atmospheric CO2 during the last deglaciation, highlighting critical parameters for the global carbon cycle.
A Stanford University study reveals that sound waves from earthquakes can reach land tens of minutes before a massive tsunami, potentially providing an early warning. The research identifies a specific acoustic signature that could indicate the presence of a tsunami-generating earthquake, allowing for faster-acting warning systems.
Researchers used GPS data to measure ground deformation caused by a large underwater earthquake, providing accurate warning of the resulting tsunami in just a few minutes. This method can provide fast, detailed, and accurate tsunami alerts, overcoming limitations of traditional seismological methods.
Researchers from the University of Pennsylvania used a fossil-based technique to study the 1700 Cascadia earthquake and its impact on coastal land levels. The study revealed that the rupture was heterogeneous, similar to recent major earthquakes in Japan, Chile, and Sumatra.
A recent study suggests the Makran subduction zone, beneath the Arabian Sea, has a higher potential for major earthquakes and tsunamis than previously thought. This could threaten the coastlines of Pakistan, Iran, Oman, and India.
The 2011 Tohoku earthquake and tsunami are the subject of a special issue in the Bulletin of the Seismological Society of America. Researchers investigated the rupture process, seismic radiation, geodetic deformations, and tsunami waves. The study sheds light on the processes at work during giant earthquakes.
Scientists successfully retrieved temperature measurements of the fault that caused the devastating Tohoku earthquake and tsunami. The recovered sensors provide critical data on frictional heat generated by fault slip during the earthquake.
The new model helps authorities find a sensible balance in mitigating natural hazards, taking into account deep uncertainties and limited resources. The study provides methods to estimate the expected value of damage and predict probabilities of disasters.
A recent study suggests that a tsunami could affect the US East Coast due to the similarity in tectonic settings between offshore earthquakes and major Canadian earthquakes. The potential threat area stretches from New England to New Jersey, with several earthquake swarms detected off the Atlantic continental shelf.
A multi-university team, led by Ronald Riggs, conducted research to analyze the impact of cargo containers on buildings during tsunamis. They found that water does not significantly increase the load when a container strikes a building, and the weight of contents also doesn't matter much.
A detailed analysis of Bonaire sediments suggests a 3,300-year-old tsunami changed the coastal ecosystem and sedimentation patterns. The study reveals overwash deposits consistent with a tsunami event, highlighting the long-term ecological significance of this single catastrophic event.
Research in the Russian Far East has revealed a seismic and volcanic hotbed, with potential to trigger tsunamis that affect the entire Pacific Basin. Thousands of people were killed in tsunamis due to earthquakes in the region, highlighting the importance of studying these hazards.
The study investigates how orangutans use their vision to search for food and navigate their surroundings, shedding light on their cognitive abilities and behavior. The research also aims to develop enrichment programs for captive animals, helping to reduce boredom and promote natural behaviors.
Scientific studies reveal pros and cons of free market approach to water trading in Australia's Murray Darling Basin. Researchers also uncover connections between typhoon tracks, rainfall patterns, and flood timing, with potential applications for improved real-time flood warning systems.