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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.
- Fri, 27 Mar 2020 08:41:14 -0600: Disasters can affect cervical cancer screening for years - Natural Disasters News -- ScienceDaily
Screening is important for the early detection of cervical cancer, but rates were significantly affected, in some areas for years, following a devastating earthquake and tsunami in Japan.
- Thu, 26 Mar 2020 12:44:40 -0600: Coral tells own tale about El Niño's past - Natural Disasters News -- ScienceDaily
Scientists use data from ancient coral to build a record of temperatures in the tropical Pacific Ocean over the last millennium. The data question previous links between volcanic eruptions and El Niño events.
- Wed, 25 Mar 2020 13:40:52 -0600: Eclectic rocks influence earthquake types - Natural Disasters News -- ScienceDaily
New Zealand's largest fault is a jumble of mixed-up rocks of all shapes, sizes, compositions and origins. According to research from a global team of scientists, this motley mixture could help explain why the fault generates slow-motion earthquakes known as 'slow slip events' as well as destructive, tsunami-generating tremors.
- Mon, 16 Mar 2020 12:15:10 -0600: Shifts in deep geologic structure may have magnified great 2011 Japan tsunami - Natural Disasters News -- ScienceDaily
Researchers say they have identified the origins of an unusual fault that probably magnified the catastrophic 2011 Japan tsunami.
- Thu, 12 Mar 2020 12:23:23 -0600: 'Fossil earthquakes' offer new insight into seismic activity deep below Earth's surface - Natural Disasters News -- ScienceDaily
A study has shed new light on the mechanisms through which earthquakes are triggered up to 40km beneath the earth's surface.
- Thu, 12 Mar 2020 10:36:37 -0600: Separations between earthquakes reveal clear patterns - Natural Disasters News -- ScienceDaily
So far, few studies have explored how the similarity between inter-earthquake times and distances is related to their separation from initial events. In a new study, researchers show that the two values become increasingly correlated the closer they are in time and space to previous, larger earthquakes.
- Wed, 11 Mar 2020 14:18:55 -0600: New flood damage framework helps planners prepare for sea-level rise - Natural Disasters News -- ScienceDaily
Researchers have developed a new framework allowing urban planners and policymakers to consider a combination of responses to sea-level rise and, if hard structures, how high these protections should be built, depending on their tolerance for risk and the projected financial losses to a particular area due to flooding.
- Tue, 10 Mar 2020 09:47:15 -0600: Injection strategies are crucial for geothermal projects - Natural Disasters News -- ScienceDaily
The fear of earthquakes is one of the main reasons for reservations about geothermal energy. In order to get hot water from the depths, crevices in the rock underground often have to be created. This is done by injecting large quantities of water under high pressure. The problem is that such hydraulic stimulation is accompanied by vibrations in the underground, known as ''induced seismicity''. A new study from the now points a way that could help to reduce the seismic risk.
- Wed, 04 Mar 2020 22:28:51 -0700: Deltas help to decrease impact of river flooding - Natural Disasters News -- ScienceDaily
Most coastal cities and ports face a double threat from storm surge and river flooding. Infrastructure development along waterways and sea-level rise increase vulnerability for these communities. Historical data is examined to determine how to reduce the risk of coastal river flooding to communities.
- Tue, 03 Mar 2020 12:01:38 -0700: Researchers develop new explanation for destructive earthquake vibrations - Natural Disasters News -- ScienceDaily
High-frequency vibrations are some of the most damaging ground movements produced by earthquakes, and researchers have a new theory about how they're produced.
- Tue, 03 Mar 2020 09:32:48 -0700: World's sandy beaches under threat from climate change - Natural Disasters News -- ScienceDaily
Half of the world's beaches could disappear by the end of the century due to coastal erosion, according to a new study led by the Joint Research Centre, the European Commission's science and knowledge service.
- Tue, 03 Mar 2020 09:32:44 -0700: Unstable rock pillars near reservoirs can produce dangerous water waves - Natural Disasters News -- ScienceDaily
In many coastal zones and gorges, unstable cliffs often fail when the foundation rock beneath them is crushed. Large water waves can be created, threatening human safety. Scientists reveal the mechanism by which these cliffs collapse, and how large, tsunami-like waves are created. Few experimental studies of this phenomenon have been carried out, so this work represents valuable new data that can be used to protect from impending disaster.
- Mon, 02 Mar 2020 09:33:53 -0700: Sinking sea mountains make and muffle earthquakes - Natural Disasters News -- ScienceDaily
Subduction zones -- places where one tectonic plate dives beneath another -- are where the world's largest and most damaging earthquakes occur. A new study has found that when underwater mountains -- also known as seamounts -- are pulled into subduction zones, not only do they set the stage for these powerful quakes, but also create conditions that end up dampening them.
- Fri, 21 Feb 2020 08:21:18 -0700: How earthquakes deform gravity - Natural Disasters News -- ScienceDaily
Researchers have developed an algorithm that for the first time can describe a gravitational signal caused by earthquakes with high accuracy. Tests with data from the 2011 earthquake near Fukushima show that the procedure could help to improve earthquake early warning systems in the future.
- Thu, 20 Feb 2020 08:11:21 -0700: Earthquakes disrupt sperm whales' ability to find food - Natural Disasters News -- ScienceDaily
Scientists studying sperm whales have discovered earthquakes affect their ability to find food for at least a year. The research is among the first to examine the impact of a large earthquake on a population of marine mammals, and offers new insight into how top predators such as sperm whales react and adapt to a large-scale natural disturbance.
- Tue, 18 Feb 2020 10:44:13 -0700: South American volcano showing early warning signs of 'potential collapse' - Natural Disasters News -- ScienceDaily
One of South America's most prominent volcanoes is producing early warning signals of a potential collapse, new research has shown.
- Tue, 11 Feb 2020 10:15:12 -0700: Climate change could trigger more landslides in High Mountain Asia - Natural Disasters News -- ScienceDaily
More frequent and intense rainfall events due to climate change could cause more landslides in the High Mountain Asia region of China, Tibet and Nepal, according to the first quantitative study of the link between precipitation and landslides in the region.
- Mon, 10 Feb 2020 12:48:52 -0700: Twist in the story of volcanism and mass extinctions - Natural Disasters News -- ScienceDaily
An emerging scientific consensus is that gases -- in particular carbon gases -- released by volcanic eruptions millions of years ago contributed to some of Earth's greatest mass extinctions. But new research suggests that that's not the entire story.
- Mon, 10 Feb 2020 11:32:00 -0700: Oral traditions and volcanic eruptions in Australia - Natural Disasters News -- ScienceDaily
In Australia, the onset of human occupation (about 65,000 years ago?) and dispersion across the continent are the subjects of intense debate and are critical to understanding global human migration routes. A lack of ceramic artifacts and permanent structures has resulted in a scarcity of dateable archaeological sites older than about 10,000 years.
- Mon, 10 Feb 2020 07:53:08 -0700: Geothermal energy: Drilling a 3,000-meter deep well - Natural Disasters News -- ScienceDaily
Destabilizing the precarious equilibrium at depth with geothermal wells may reactivate the geological layers causing earthquakes. Researchers have studied the seismic activity linked to a geothermal drilling in search of supercritical fluids. They discovered that the drilling did not cause uncontrolled seismic activity. This drilling under such critical conditions suggests that the technology is on the verge of mastering geothermal energy, paving the way for new sources of non-polluting heat and electricity.
- Thu, 06 Feb 2020 06:04:58 -0700: Sediment loading key to predicting post-wildfire debris flows - Natural Disasters News -- ScienceDaily
The mudslides that follow wildfires in Southern California can be deadly and difficult to predict. New research can help officials identify areas prone to these mudslides and respond before disaster occurs, according to scientists.
- Tue, 04 Feb 2020 10:15:02 -0700: Peeking at the plumbing of one of the Aleutian's most-active volcanoes - Natural Disasters News -- ScienceDaily
A new approach to analyzing seismic data reveals deep vertical zones of low seismic velocity in the plumbing system underlying Alaska's Cleveland volcano, one of the most-active of the more than 70 Aleutian volcanoes. Unlike typical seismic imaging experiments that deploy dozens of seismometers, this study used only eight.
- Tue, 04 Feb 2020 10:14:52 -0700: Wildfires increase winter snowpack -- but that isn't necessarily a good thing - Natural Disasters News -- ScienceDaily
Wildfires are altering ecosystems globally as they change in frequency, size, and severity. In unburned forests, snow has been shown to accumulate more in small clearings or in stands with low to moderate forest densities. A new study finds that peak snowpack across severe burn areas increased 15% in snow-water equivalence (SWE) and 17% in depth for every 20% increase in overstory tree mortality due to burn severity.
- Thu, 30 Jan 2020 15:36:03 -0700: Pre-eruption seismograms recovered for 1980 Mount St. Helens event - Natural Disasters News -- ScienceDaily
Nearly 40 years ago, analog data tapes faithfully recorded intense seismic activity in the two months before the historic eruption of Mount St. Helens in Washington State in May 1980. It took some lengthy and careful restoration efforts -- including a turn in a kitchen oven for some of the tapes -- to recover their data.
- Tue, 28 Jan 2020 09:46:13 -0700: Upper-plate earthquakes caused uplift along New Zealand's Northern Hikurangi Margin - Natural Disasters News -- ScienceDaily
Earthquakes along a complex series of faults in the upper plate of New Zealand's northern Hikurangi Subduction Margin were responsible for coastal uplift in the region, according to a new evaluation of local marine terraces.
- Mon, 27 Jan 2020 05:52:57 -0700: Seismic biomarkers in Japan Trench fault zone reveal history of large earthquakes - Natural Disasters News -- ScienceDaily
Researchers used a novel technique to study the faults in the Japan Trench, the subduction zone where the magnitude 9.1 Tohoku-Oki earthquake struck in 2011. Their findings reveal a long history of large earthquakes in this fault zone, where they found multiple faults with evidence of more than 10 meters of slip during large earthquakes.
- Thu, 23 Jan 2020 09:59:11 -0700: Evidence to explain behavior of slow earthquakes - Natural Disasters News -- ScienceDaily
A team of researchers has made an important breakthrough that will help better understand the origin and behavior of slow earthquakes. Their work presents unprecedented evidence that slow earthquakes are related to dynamic fluid processes at the boundary between tectonic plates. These slow earthquakes are quite complex, and many theoretical models of slow earthquakes require the pressure of these fluids to fluctuate during an earthquake cycle.
- Wed, 22 Jan 2020 11:49:17 -0700: Complex rupturing during 2019 Ridgecrest, California, sequence - Natural Disasters News -- ScienceDaily
The 2019 Ridgecrest earthquake sequence, which startled nearby California residents over the 4 July holiday with magnitude 6.4 and magnitude 7.1 earthquakes, included 34,091 earthquakes overall, detailed in a high-resolution catalog created for the sequence.
- Wed, 22 Jan 2020 06:05:15 -0700: Human-sparked fires smaller, less intense but more frequent with longer seasons - Natural Disasters News -- ScienceDaily
Fires started by people have steadily increased in recent decades, sparking a major shift in U.S. wildfire norms, according to a new study. The research found human-caused wildfires are more frequent, smaller, less hot and occur over longer seasons than fires started by lightning.
- Fri, 17 Jan 2020 06:08:29 -0700: 'Melting rock' models predict mechanical origins of earthquakes - Natural Disasters News -- ScienceDaily
Engineers have devised a model that can predict the early mechanical behaviors and origins of an earthquake in multiple types of rock. The model provides new insights into unobservable phenomena that take place miles beneath the Earth's surface under incredible pressures and temperatures, and could help researchers better predict earthquakes -- or even, at least theoretically, attempt to stop them.
- Thu, 16 Jan 2020 12:17:08 -0700: In death of dinosaurs, it was all about the asteroid -- not volcanoes - Natural Disasters News -- ScienceDaily
Volcanic activity did not play a direct role in the mass extinction event that killed the dinosaurs, according to an international team of researchers. It was all about the asteroid.
- Wed, 15 Jan 2020 14:40:15 -0700: Slow-motion interplate slip detected in the Nankai Trough near Japan - Natural Disasters News -- ScienceDaily
Researchers used a Global Navigation Satellite System-Acoustic ranging combination technique to detect signals due to slow slip events in the Nankai Trough with seafloor deformations of 5 cm or more and durations on the order of one year. These events generally occurred on the shallow sides of regions with strong interplate coupling and represent variations in interplate friction conditions, which may help simulate the occurrence of megathrust earthquakes originating from this subduction zone and contribute earthquake disaster prevention.
- Tue, 14 Jan 2020 08:40:46 -0700: No need to dig too deep to find gold! - Natural Disasters News -- ScienceDaily
Why are some porphyry deposits rich in copper while others contain gold? A researcher investigated how the metals are accumulated over the time duration of a mineralizing event and discover that the depth of the deposits influences the quantity of metals produced and that over 95% of the gold is lost to the atmosphere. The deeper a deposit is, the more copper there will be, while gold-rich deposits are closer to the surface.
- Tue, 14 Jan 2020 05:40:46 -0700: Climate change increases the risk of wildfires confirms new review - Natural Disasters News -- ScienceDaily
Human-induced climate change promotes the conditions on which wildfires depend, increasing their likelihood -- according to a review of research on global climate change and wildfire risk.
- Fri, 10 Jan 2020 08:10:29 -0700: Global warming is the kindling that caused extensive wildfire - Natural Disasters News -- ScienceDaily
Researchers identified Arctic Oscillation as the cause for the recent wildfires in Siberia. Their study forecasts wildfire activity in spring, helping to prevent carbon release and global warming.
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