Tsunami News. Causes of tsunamis, status of tsunami devastated regions, and locations where scientists predict tsunamis might occur in the future. Read about tsunamis and earthquakes.
Updated: 4 hours 2 min ago
In 2004, a tsunami devastated much of the Indonesian city of Banda Aceh. An international team of researchers has studied the long-term impact that rebuilding efforts in coastal areas have had on the community.
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.
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.
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.
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.
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.
A multi-disciplinary team has simulated the largest, longest multiphysics earthquake simulation to date.
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.
Scientists have discovered what they believe is the skull of the earliest known tsunami victim, a person who lived 6,000 years ago in Papua New Guinea. The skull itself was found almost a hundred years ago, but recent analysis of the sediments found with the skull reveals that they bear distinctive hallmarks of tsunami activity.
Giant lateral collapses are huge landslides occurring at the flanks of a volcano. Such collapses are rather common events during the evolution of a large volcanic edifice, often with dramatic consequences such as tsunami and volcano explosions. These catastrophic events interact with the magmatic activity of the volcano, as new research suggests.
A review of geological evidence for tsunamis during the past 4500 years in the Mediterranean Sea has revealed that as many as 90 per cent of these inundation events may have been misinterpreted by scientists and were due to storm activity instead.
Building on existing information and databases relating to volcanic fatalities, scientists have, for the first time, been able to classify victims by activity or occupation and look at the distance of their death from the volcano.
Geologists use ground-penetrating radar to determine the breadth and depth of erosion from an ancient tsunami in Northern California.
The 2011 Japanese tsunami set the stage for something unprecedented. For the first time in recorded history, scientists have detected entire communities of coastal species crossing the ocean by floating on makeshift rafts. Nearly 300 species have appeared on the shores of Hawaii and the US West Coast attached to tsunami debris, marine biologists discovered.
A comprehensive study of faults along the north side of the Olympic Mountains of Washington State emphasizes the substantial seismic hazard to the northern Puget Lowland region. The study examined the Lake Creek-Boundary Creek and Sadie Creek faults along the north flank the Olympic Mountains, and concludes that there were three to five large, surface-rupturing earthquakes along the faults within the last 13,000 years.