Articles tagged with Avalanches
Scientists studying giant ice avalanches on Iapetus have found that the coefficient of friction is lower than expected, suggesting a new mechanism for reducing friction during landslides. The findings challenge existing theories and provide insights into the mobility of icy moons in the solar system.
Geologists and researchers use LiDAR, geochronology, and stratigraphy to uncover the history of earthquakes, volcanism, and tectonic processes in regions like Alaska and Nevada. These findings shed light on Earth's surface evolution and help understand plate tectonics.
Researchers found that clear-cut logging significantly increases the risk of avalanches penetrating into forest cover. The study provides new methods and data to predict runout distances and assess risks to facilities below avalanche terrain. This knowledge is crucial for land-use planning and management of resources.
A team of researchers led by an undergraduate student at the University of Arizona has discovered that meteorite shockwaves trigger massive dust avalanches on Mars. The study found that shockwaves preceding the actual impact cause dust avalanches, revealing a new way impacts shape the planet's surface.
A Canadian study published in CMAJ found that avalanche victims buried in Canada died significantly quicker than those buried in Switzerland. The study analyzed data from 301 Canadian and 946 Swiss records of completely buried avalanche victims between 1980 and 2005.
Researchers are collecting high-tech sensing data from various sources to create a reliable early-warning system for train operators. The goal is to predict natural disasters and possible terror attacks on rail lines.
Carbon nanotube researchers at University of Illinois demonstrate remarkable increase in current-carrying capacity using avalanche process. The process creates multiple electron-hole pairs, leading to rapid increases in current until the nanotube breaks down.
This paper describes network analyses capabilities within GIS to describe and quantify shear zone networks. Meanwhile, structural analysis of rockslide avalanches reveals fault structures as fingerprints for motion and emplacement styles.
Researchers developed ultraviolet avalanche photodiodes to detect anthrax and other bioterrorism agents in the air. The devices offer high gain, reliability, and robustness, making them ideal for rapid containment of incidents like the 2001 anthrax attacks.
Researchers at Delft University of Technology have demonstrated the avalanche effect in semiconducting nanocrystals, which could lead to higher output and lower manufacturing costs for solar cells. The findings show that specific crystals can release two or three electrons per photon, potentially increasing output to 44%.
Researchers used topographic data from NASA's HiRISE camera to determine how a flow of pure liquid water would look on the images versus an avalanche of dry granular debris. The study found that the dry granular case was the winner, suggesting that liquid water has not been found on the Martian surface within the last decade.
Researchers at Northwestern University developed back-illuminated APDs that detect single photons in the ultraviolet region with high sensitivity. The devices have excellent uniformity and can be used to create secure communication systems and biological agent detectors.
Physicists have discovered that correcting a typo in an e-mail requires dozens of bits of information, each forcing its polarity to align up or down. The researchers found that the spin precession effect, where magnetic fields exert forces on neighboring spins, can lead to avalanches if not properly damped.
Researchers at CCNY and Lehman College found that magnetic avalanches can propagate like a flame, releasing magnetic energy into a crystal. This phenomenon, known as 'magnetic burning', has potential applications in understanding combustion dynamics.
Recent studies suggest that brain avalanches, triggered by neurochemicals, may be optimal for information storage. This discovery could lead to new treatments for memory disorders.
The Ecological Society of America symposium explores ecological recovery after the 1980 Mount St. Helens eruption, revealing remarkable resilience in some species and dramatic transformation of Spirit Lake. Researchers discuss the importance of chance events, life history characteristics, and timing in ecological recovery.
Researchers measured unusually high biochemical activity on the canyon floor, with organic material enriching the deep-sea area. The sediment accumulates rapidly, leading to unstable floors and submarine mud avalanches every several decades to centuries.
Rescuers can locate avalanche victims four times faster using a robotic swarm search technique. Researchers at Sandia National Laboratories developed a computer program that enables humans to find buried skiers using mini-robots and simple radio equipment.
Avalanches claim over 150 lives worldwide each year, with Colorado leading the nation in fatalities. The state's steep terrain and unpredictable snowpack make it particularly hazardous for hikers, skiers, and snowboarders.
The CU National Snow and Ice Data Center has posted avalanche awareness information on its website to educate skiers and backcountry enthusiasts. The materials provide guidance on evaluating snowpack stability, recognizing danger signals, and surviving avalanches, with links to related sources.
Recent studies indicate that electronic transmitters used by off-piste skiers to locate buried victims are ineffective due to limited range and prolonged rescue times. The signals only carry up to 50 meters and professional skiers take an average of 18 minutes to reach their companions, resulting in a low survival rate.
Volcanologists at the University at Buffalo have developed a method to analyze satellite data and identify weak spots on a volcano's surface. By interpreting the data, they can determine properties such as water or iron-bearing minerals that contribute to weakening of the volcanic structure.
A 65 million-year-old meteorite impact caused massive landslides and subsidence along the Yucatán Peninsula's continental margin. Giant submarine avalanches then swept across the Gulf of Mexico and Caribbean, displacing billions of gallons of water.