Science Daily Natural Disaster News

Natural Disaster News and Research. Earthquakes, volcanic eruptions, landslides, tsunamis and other natural disasters. Research past events, review predictions by scientists and learn how disaster relief can be most effective.
  1. Powerful volcanic blast not the cause for 2018 Indonesian island collapse

    The dramatic collapse of Indonesia's Anak Krakatau volcano in December 2018 resulted from long-term destabilising processes, and was not triggered by any distinct changes in the magmatic system that could have been detected by current monitoring techniques, new research has found.
  2. Possible chemical leftovers from early Earth sit near the core

    Down near the Earth's core, there are zones where seismic waves slow to a crawl. New research finds that these enigmatic and descriptively-named ultra-low velocity zones are surprisingly layered. Modeling suggests that it's possible some of these zones are leftovers from the processes that shaped the early Earth -- remnants of incomplete mixing like clumps of flour in the bottom of a bowl of batter.
  3. Contorted oceanic plate caused complex quake off New Zealand’s East Cape

    Researchers used a novel finite-fault inversion method with seismometer data from around the world to investigate a deep intraslab earthquake that occurred on March 4, 2021, off the northeastern tip of New Zealand's North Island. This imaging revealed complex rupture geometry that included shallow faulting with trench-perpendicular extension and unusual deep faulting with trench-parallel compression, possibly caused by seamount subduction and/or the transition between the Kermedec Trench and Hikurangi Margin, with different thicknesses of subducting oceanic crust.
  4. Controlled burning of natural environments could help offset our carbon emissions

    Planting trees and suppressing wildfires do not necessarily maximize the carbon storage of natural ecosystems. A new study has found that prescribed burning can actually lock in or increase carbon in the soils of temperate forests, savannahs and grasslands.
  5. Tsunamis’ magnetic fields are detectable before sea level change

    A new study finds the magnetic field generated by a tsunami can be detected a few minutes earlier than changes in sea level and could improve warnings of these giant waves.
  6. Earthquake depth impacts potential tsunami threat

    Earthquakes of similar magnitude can cause tsunamis of greatly varying sizes. This commonly observed, but not well-understood phenomenon has hindered reliable warnings of local tsunamis. This research provides new insight that connects the characteristics of earthquakes -- magnitude, depth where two tectonic plates slip past each other and the rigidity of the plates involved -- with the potential size of a resulting tsunami.
  7. Using the Earth’s noise to see beneath the Greenland ice sheet

    The noise created by the Earth's movements has been used to build up a detailed picture of the geological conditions beneath the Greenland Ice Sheet and the impact on ice flow, in new research.  The team studied Rayleigh waves -- seismic waves generated by movements such as earthquakes -- to produce high-resolution images of the rocks underneath the ice sheet, helping to identify which areas are most susceptible to faster ice flow.  It will give us a better understanding of the processes that contribute to accelerated ice discharge into the ocean and the consequent sea level rise.
  8. Dark fiber seismic network finds missed aftershocks in Chinese earthquake

    Just days after a 2020 magnitude 5.1 earthquake in Tangshan, China, researchers turned nearly 8 kilometers of unused telecom fiber optic cable into a seismic array that detected dozens of aftershocks that were missed by permanent seismic stations.
  9. Evidence for shared earthquakes between San Andreas and San Jacinto faults

    The San Andreas and San Jacinto faults have ruptured simultaneously at least three times in the past 2,000 years, most recently in 1812, according to a new study by geologists.
  10. Previously unrecorded Chilean tsunami identified

    A large earthquake off the coast of south-central Chile in 1737 may have caused a substantial tsunami that was absent from historical records. Historical records are used to predict how often tsunamis are likely to occur in a region in the future. Until now, it was previously believed that tsunami-causing earthquakes had occurred in this area of Chile three times since the 1570s, including after the magnitude 9.5 earthquake of 1960. However, this discovery of an unrecorded tsunami means that tsunamis may have struck the Chilean coast more frequently than previously believed. This means the average time between historical tsunami occurrences could be significantly reduced, to an average of 130 years.
  11. New research makes waves tackling the future of tsunami monitoring and modeling

    Rising sea levels are already impacting coastal residents and aggravating existing coastal hazards, such as flooding during high tides and storm surges. New research indicates that future sea-level rise will also have impacts on the heights of future tsunamis.
  12. New type of earthquake discovered

    A research team has documented a new type of earthquake in an injection environment in British Columbia, Canada. The seismic events are slower than conventional earthquakes. Their existence supports a scientific theory that until now had not been sufficiently substantiated by measurements.

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