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ScienceDaily: 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.
- Tue, 13 Apr 2021 10:10:12 -0600: Why are there relatively few aftershocks for certain cascadia earthquakes? - Natural Disasters News -- ScienceDaily
In the Cascadia subduction zone, medium and large-sized 'intraslab' earthquakes, which take place at greater than crustal depths within the subducting plate, will likely produce only a few detectable aftershocks, according to a new study.
- Tue, 13 Apr 2021 09:41:17 -0600: Tremors triggered by typhoon talas tell tales of tumbling terrain - Natural Disasters News -- ScienceDaily
A new method was developed for high-resolution detection of landslides based on seismic data. This method was applied to detect landslides that occurred during the transit of Typhoon Talas across western Japan in 2011. Multiple landslides were detected and located, including one in Shizuoka Prefecture, 400 km east of the typhoon's track. The results show that large and small landslides may follow the same scaling relationships. This method may help develop landslide emergency alert technology.
- Mon, 12 Apr 2021 06:45:28 -0600: Volcanic pollution return linked to jump in respiratory disease cases - Natural Disasters News -- ScienceDaily
Respiratory disease increased by almost a quarter after the Holuhraun lava eruption in 2014-2015, one of Iceland's largest volcanic eruptions. Emissions returning in the days immediately following volcanic eruptions impact health and are not factored into responses to the public health threat caused by volcanoes. The study authors recommend government responses take these emissions into account.
- Fri, 09 Apr 2021 08:44:59 -0600: Preseismic atmospheric radon anomaly associated with 2018 northern Osaka earthquake - Natural Disasters News -- ScienceDaily
The concentration of the radioactive element radon is known to change in the ground before and after earthquakes. Previous studies have shown elevated radon levels in the atmosphere before the mainshock of a large inland earthquake due to foreshock activity and slow slip.
- Thu, 08 Apr 2021 09:24:15 -0600: Asteroid crater on Earth provides clues about Martian craters - Natural Disasters News -- ScienceDaily
The 15-million-year-old Nördlinger Ries is an asteroid impact crater filled with lake sediments. A research team has now discovered a volcanic ash layer in the crater. In addition, they show that the ground under the crater is sinking in the long-term, which provides important insights about craters on Mars, such as those currently being explored by the NASA Curiosity and Perseverance Rovers.
- Wed, 07 Apr 2021 09:04:14 -0600: Early indicators of magma viscosity could help forecast a volcano's eruption style - Natural Disasters News -- ScienceDaily
The properties of the magma inside a volcano affect how an eruption will play out. In particular, the viscosity of this molten rock is a major factor in influencing how hazardous an eruption could be for nearby communities. But it usually only quantified well after an eruption. New work identifies an indicator of magma viscosity that can be measured before an eruption. This could help scientists and emergency managers understand possible patterns of future eruptions.
- Tue, 06 Apr 2021 10:07:38 -0600: Silencing vibrations in the ground and sounds underwater - Natural Disasters News -- ScienceDaily
POSTECH professor Junsuk Rho's research team demonstrates artificial control of elastic waves and underwater sounds applicable as stealth technology.
- Tue, 06 Apr 2021 10:07:04 -0600: Seismic coda used to locate and define damage from explosions - Natural Disasters News -- ScienceDaily
Comparison of coda waves, the scattered waves that arrive after the direct waves of a seismic event, can be used to determine the relative locations of two underground explosions, according to a new study.
- Thu, 01 Apr 2021 13:12:45 -0600: New promise of forecasting meteotsunamis - Natural Disasters News -- ScienceDaily
On the afternoon of April 13, 2018, a large wave of water surged across Lake Michigan and flooded the shores of the picturesque beach town of Ludington, Michigan, damaging homes and boat docks, and flooding intake pipes. Thanks to a local citizen's photos and other data, scientists reconstructed the event in models and determined this was the first ever documented meteotsunami in the Great Lakes caused by an atmospheric inertia-gravity wave.
- Mon, 29 Mar 2021 13:33:46 -0600: Scientists zero in on the role of volcanoes in the demise of dinosaurs - Natural Disasters News -- ScienceDaily
A multi-institutional team of researchers has identified a source of volcanic CO2 output that can account for the global warming event that occurred in advance of the Earth's last major extinction event, bringing us closer to understanding what role volcanism may have played in the demise of dinosaurs.
- Wed, 24 Mar 2021 12:28:45 -0600: Weird earthquake reveals hidden mechanism - Natural Disasters News -- ScienceDaily
The wrong type of earthquake in an area where there should not have been an earthquake led researchers to uncover the cause for this unexpected strike-slip earthquake -- where two pieces of crust slide past each other on a fault -- in places where subduction zone earthquakes -- one geologic plate slipping beneath another -- are common.
- Mon, 22 Mar 2021 12:33:13 -0600: New basalt type discovered beneath the ocean - Natural Disasters News -- ScienceDaily
A new type of rock created during large and exceptionally hot volcanic eruptions has been discovered beneath the Pacific Ocean.
- Mon, 22 Mar 2021 07:37:27 -0600: Virtues of modeling many faults: New method illuminates shape of Alaskan quake - Natural Disasters News -- ScienceDaily
Using a newly developed flexible, finite-fault inversion framework based on seismic P waves, a new study confirms that the magnitude 7.9 Gulf of Alaska earthquake of January 23, 2018 involved the multi-shock irregular rupture of a complex conjugate fault system with both east-west- and north-south-oriented segments, and found that this irregular rupture was associated with pre-existing bathymetric features.
- Thu, 18 Mar 2021 15:03:19 -0600: Melting glaciers contribute to Alaska earthquakes - Natural Disasters News -- ScienceDaily
Glaciers in Southeast Alaska have been melting since the end of the Little Ice Age, many of which are in close proximity to strike-slip faults. When these glaciers melt, the land begins to rise, and the faults they'd previously sutured become unclamped. In this study, scientists determine this process has influenced the timing and location of earthquakes with a magnitude of 5.0 or greater in the area during the past century.
- Thu, 18 Mar 2021 06:56:24 -0600: Chemical processes identified as key to understanding landslides - Natural Disasters News -- ScienceDaily
A new study results are based on investigations of repeated mass movements and are expected to benefit planning, maintenance, and development of transportation infrastructure in affected areas.
- Wed, 17 Mar 2021 12:17:13 -0600: Icy ocean worlds seismometer passes further testing in Greenland - Natural Disasters News -- ScienceDaily
The Seismometer to Investigate Ice and Ocean Structure (SIIOS) performed well in seismic experiments conducted in snowy summer Greenland, according to a new study.
- Wed, 17 Mar 2021 08:21:22 -0600: The blast that shook the ionosphere - Natural Disasters News -- ScienceDaily
A 2020 explosion in Lebanon's port city of Beirut led to a southward-bound, high-velocity atmospheric wave that rivaled ones generated by volcanic eruptions.
- Wed, 17 Mar 2021 07:46:08 -0600: When volcanoes go metal - Natural Disasters News -- ScienceDaily
What would a volcano - and its lava flows - look like on a planetary body made primarily of metal? A pilot study offers insights into ferrovolcanism that could help scientists interpret landscape features on other worlds.
- Tue, 16 Mar 2021 16:36:43 -0600: The potential economic impact of volcano alerts - Natural Disasters News -- ScienceDaily
A new study suggests that, when a Volcano Alert remains elevated at any level above 'normal' due to a period of volcanic unrest, it can cause a decline in the region's housing prices and other economic indicators. The authors argue that federal policymakers may need to account for the effects of prolonged volcanic unrest -- not just destructive eruptions -- in the provision of disaster relief funding.
- Mon, 15 Mar 2021 14:07:08 -0600: Scientists plumb the depths of the world's tallest geyser - Natural Disasters News -- ScienceDaily
Scientists were ready to jump at the opportunity to get an unprecedented look at the workings of Steamboat Geyser. Their findings provide a picture of the depth of the geyser as well as a redefinition of a long-assumed relationship between the geyser and a nearby spring.
- Fri, 12 Mar 2021 10:13:06 -0700: 'Magical' fire suppressant kills zombie fires 40% faster than water alone - Natural Disasters News -- ScienceDaily
New research shows a fire suppressant, when combined with water, cuts the amount of time and water needed to extinguish peat fires by 40%.
- Thu, 11 Mar 2021 12:20:24 -0700: Geologists discover powerful 'river of rocks' below Caribbean - Natural Disasters News -- ScienceDaily
Geologists have long thought tectonic plates move because they are pulled by the weight of their sinking portions and that an underlying, hot, softer layer called asthenosphere serves as a passive lubricant. But a team of geologists at has found that layer is actually flowing vigorously, moving fast enough to drive plate motions.
- Thu, 11 Mar 2021 10:35:13 -0700: Study of Redoubt and other volcanoes improves unrest detection - Natural Disasters News -- ScienceDaily
New research has revealed a method by which scientists -- and the public -- can have perhaps years of advance warning about a potential eruption.
- Wed, 10 Mar 2021 13:04:26 -0700: Catching energy-exploration caused earthquakes before they happen - Natural Disasters News -- ScienceDaily
Geoscientists used 3D-printed rocks and an advanced, large-scale computer model of past earthquakes to understand and prevent earthquakes triggered by energy exploration.
- Fri, 05 Mar 2021 11:37:16 -0700: Small volcanic lakes tapping giant underground reservoirs - Natural Disasters News -- ScienceDaily
In its large caldera, Newberry volcano (Oregon, USA) has two small volcanic lakes, one fed by volcanic geothermal fluids (Paulina Lake) and one by gases (East Lake). These popular fishing grounds are small windows into a large underlying reservoir of hydrothermal fluids, releasing carbon dioxide (CO2) and hydrogen sulfide (H2S) with minor mercury (Hg) and methane into East Lake.
- Fri, 05 Mar 2021 10:38:05 -0700: Making sense of commotion under the ocean to locate tremors near deep-sea faults - Natural Disasters News -- ScienceDaily
Researchers have developed a new method for detecting small earthquake tremors and successfully applied it to the Nankai Trough, Japan. The technique allowed the accurate estimation of tremor location and propagation speed, leading to the first estimates of this fault's permeability -- crucial information in evaluation of earthquake rupture processes.
- Thu, 04 Mar 2021 14:11:17 -0700: Apparent Atlantic warming cycle likely an artifact of climate forcing - Natural Disasters News -- ScienceDaily
Volcanic eruptions, not natural variability, were the cause of an apparent 'Atlantic Multidecadal Oscillation,' a purported cycle of warming thought to have occurred on a timescale of 40 to 60 years during the pre-industrial era, according to a team of climate scientists who looked at a large array of climate modeling experiments.
- Thu, 04 Mar 2021 08:04:29 -0700: Revisiting the Kobe earthquake and the variations of atmospheric radon concentration - Natural Disasters News -- ScienceDaily
Researchers have unearthed further details about radon concentration in the atmosphere before and after earthquakes, moving us closer to being able to anticipate when large earthquakes may hit.
- Wed, 03 Mar 2021 12:25:57 -0700: How do you know where volcanic ash will end up? - Natural Disasters News -- ScienceDaily
Until the eruption of Eyjafjallajökull volcano, models from the VAACs were based on the tracking of the clouds in the atmosphere. In the wake of this economic disaster for airlines, ash concentration levels have been introduced to make decisions on flight restrictions. However, a team discovered that even the smallest volcanic ash did not behave as expected. Its results will help to refine the way that volcanic ash is represented in forecasting models.
- Wed, 03 Mar 2021 12:24:46 -0700: More extreme short-duration thunderstorms likely in the future due to global warming - Natural Disasters News -- ScienceDaily
New research has shown that warming temperatures in some regions of the UK are the main drivers of increases in extreme short-duration rainfall intensities, which tend to occur in summer and cause dangerous flash flooding.
- Tue, 02 Mar 2021 13:00:36 -0700: Unusual earthquakes highlight central Utah volcanoes - Natural Disasters News -- ScienceDaily
Earthquakes in the Black Rock Desert are rare and capturing the seismic recordings from these earthquakes provides a glimpse into the volcanic system of the Black Rock Desert that, while not showing any signs of erupting, is still active.
- Tue, 02 Mar 2021 05:53:46 -0700: Lead up to volcanic eruption in Galapagos captured in rare detail - Natural Disasters News -- ScienceDaily
Hours before the 2018 eruption of Sierra Negra, the Galápagos Islands' largest volcano, an earthquake rumbled and raised the ground more than 6 feet in an instant. The event, which triggered the eruption, was captured in rare detail by an international team of scientists, who said it offers new insights into one of the world's most active volcanoes.
- Thu, 25 Feb 2021 12:38:19 -0700: Post-wildfire landslides becoming more frequent in southern California - Natural Disasters News -- ScienceDaily
Southern California can now expect to see post-wildfire landslides occurring almost every year, with major events expected roughly every ten years, a new study finds. The results show Californians are now facing a double whammy of increased wildfire and landslide risk caused by climate change-induced shifts in the state's wet and dry seasons, according to researchers who mapped landslide vulnerability in the southern half of the state.
- Thu, 25 Feb 2021 09:33:56 -0700: Forests' long-term capacity to store carbon is dropping in regions with extreme annual fires - Natural Disasters News -- ScienceDaily
Researchers have analysed decades' worth of data on the impact of repeated fires on ecosystems across the world. Their results show that repeated fires are driving long-term changes to tree communities and reducing their population sizes.
- Tue, 23 Feb 2021 11:55:13 -0700: Alaska thunderstorms may triple with climate change - Natural Disasters News -- ScienceDaily
Warming temperatures will potentially alter the climate in Alaska so profoundly later this century that the number of thunderstorms will triple, increasing the risks of widespread flash flooding, landslides, and lightning-induced wildfires, new research finds.
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