Articles tagged with Mountains
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Historical records show salinity concentrations increasing in groundwater and aquifers due to urbanization and deicer use. High chloride levels can induce mortality in aquatic animals and alter plant composition.
Rocky Mountain spotted fever, a bacterial disease caused by Rickettsia rickettsii, can be effectively treated with specific antibiotics if caught early. Symptoms include body-wide aches, headache, sudden high fever, sore throat, and nausea, often accompanied by a telltale spotty rash.
Researchers at University of Colorado Boulder developed a new method to visualize forces beneath the Himalaya, allowing for a deeper understanding of earthquakes and mountain formation. The study uses seismic sensors and creates high-resolution images of the crust and upper mantle.
A new long-haired forest primate, named Highland Mangabey, has been discovered in Tanzania's Southern Highlands. The critically endangered species is characterized by a distinctive call and adaptation to the cold climate, with an estimated population of between 500-1,000 animals.
Scientists have found that strain is rapidly accumulating within a specific area south of the San Gabriel Mountains in Los Angeles, primarily in the San Gabriel and San Fernando Valleys. The study suggests that the Puente Hills Fault and nearby faults may be more likely to break than others, increasing the risk of earthquakes.
The Mt. Everest team, comprising anaesthesia and intensive care experts, aims to study human physiology in extreme environments by testing a closed-circuit breathing system and investigating the effects of hypoxia on brain function and genetics. The expedition seeks to understand acclimatization at the very limit.
A 15-year study in rural Greece found that living in a mountainous area was associated with lower death rates and healthier heart profiles compared to lowland areas. Higher blood lipids and blood pressure were linked to increased risk, but other protective factors may be at play.
Scripps scientists challenge conventional theory on seamount chain formation by finding that hot spot chains can change direction due to processes unrelated to plate motion. The study provides new insights into the dynamics of the earth's interior and suggests alternative explanations for seamount patterns.
The loss of 6% of mountain gorilla habitat in the Virunga National Park is a significant step backward for the endangered species. Scientists are using NASA satellite imagery to monitor land changes and develop a monitoring system with conservation groups to protect the remaining habitats.
Researchers found that hummingbirds' lifting ability declines with altitude, leaving less reserve power for quick bursts of flight. The study also revealed a clear correlation between power margin and elevation, with birds dominating territories at lower elevations.
A new method of paleoelevation has been developed by Jennifer McElwain at the Field Museum, allowing scientists to estimate land elevation over geological eras. The method uses stomata on leaves to determine past carbon dioxide levels and elevation, providing a more accurate understanding of climate evolution and plant animal migration.
Eurasian giant deer were found to have survived until 7,000 years ago, according to a recent study published in Nature. The discovery pushes back the previously believed extinction date for the species by 3,000 years, leaving scientists to question what ultimately led to their demise.
A recent BioScience article highlights that decades of fire suppression may have been overly criticized, and climate has a significant impact on fire spread in high-elevation forests. The studies also reveal how invasive alien plants can dramatically alter fire regimes, proposing a scheme for evaluating the dangers of these invasions.
Scientists at Columbia University's Lamont Doherty Earth Observatory have made new discoveries about the formation of underwater mountains along the Mid-Ocean Ridge. They found that the height and width of these mountains are highly correlated to the direction the ridge and connecting plates move across the planet's surface.
A computer model reveals that rainfall in New Mexico's mountains can recharge the Rio Grande River's water table after a 50-year lag. This finding has significant implications for sustainable aquifer management and river management planning.
Research suggests that rainfall and snowfall in distant mountains can significantly impact river levels years later, highlighting the importance of water table recharge. This phenomenon has significant implications for development in semi-arid regions, emphasizing the need for long-term planning to ensure sustainability.
A study by UC Berkeley post-doctoral fellow Vance T. Vredenburg shows that non-native trout have devastated native frog populations in high-Sierra lakes, but removing fish allows the frogs to flourish. The mountain yellow-legged frog has declined dramatically due to introduced trout, with only 5,000 adults remaining in its range.
Alpine tree lines are shifting up-slope due to global warming, threatening regional plant populations. The study suggests that pine trees could help protect drinking water catchments from erosion and pollution in the City of Vienna.
Researchers analyzed DNA from western gorilla fecal and hair samples to find that neighboring social groups are often led by genetically related males. This suggests connections between genetic relationships and group interactions, parallels with human social structures, and clues to the early human social world.
The INEEL-designed closure system will demonstrate operations and equipment, with the prototype constructed and operated at the INEEL. The project builds on INEEL's expertise in spent fuel canister welding and robotics to develop a remote-operated waste package closure system.
A new study by University of California, Berkeley biologist Rosemary Gillespie found that Hawaiian spiders diversified to fill a wide range of habitats on the Hawaiian Islands. The research suggests that evolution plays a key role in shaping communities on these islands, similar to mainland processes.
A four-year study reveals that Himalayan erosion rates are uniform across wet and dry regions, contrary to expectations. The Indian Ocean's monsoon rains create a striking difference in precipitation between the north and south, yet erosion rates remain relatively constant.
A recent catastrophic landslide on Kilauea has created a debris buffer that stabilizes the Hilina slump, reducing the likelihood of future collapse. The buffer was formed when a detached piece of the mountain slid away and settled beneath the ocean, creating a broad, bench-like structure.
Researchers found widespread zeolites across Yucca Mountain, abundant at a depth considered ideal for waste storage. A combination of man-made safeguards and natural features is necessary to prevent waste migration.
Researchers at USGS and international universities reveal that hot vaporized seawater contributes to the formation of new oceanic crust. High-pressure images of lava cavities show molten salt and exotic minerals formed from steam bubbles, challenging previous assumptions about seawater's boiling point at great depths.
Researchers found that glacial icebergs carried boulders, known as erratics, from the Rocky Mountains to Rattlesnake Mountain in south-central Washington. The rocks were deposited along northeast-running gullies and show signs of weathering, suggesting they were carried by older Ice Age floods.
Researchers use a lightweight device to extract core samples from sediment deposits in Bolivia, revealing that sediment transport is only possible during La Niña events. The findings suggest that the Andes Mountains play a crucial role in shaping the Amazon River's sediment load.
A study by UT Southwestern Medical Center found that obesity is associated with acute mountain sickness in high-altitude destinations. Obese individuals are more susceptible to symptoms such as headache, nausea, and fatigue, highlighting the importance of gradual ascent and medication for preventive measures.
Researchers discovered that glacial erosion is controlled by the relationships of the ground beneath the glacier, the rubble pile, and the glacier itself. Glaciers achieve a steady state existence when the angle between their toe and sediment pile becomes too steep, causing streams to stop flowing and erosion to cease.
A staged development concept for Yucca Mountain aims to allow decisions based on latest available information, avoiding rigid timelines. A pilot stage will study performance before storing large amounts of radioactive waste.
The study found that ocean circulation plays a less significant role in climate change, while atmospheric circulation has a major impact on temperature differences between Europe and North America. The Rocky Mountains contribute significantly to the temperature contrast by creating a persistent wave in winds downstream.
The Sirente crater field is the world's first known impact crater in Italy, dated between the 4th and 5th century A.D. The crater features fine-grained lacustrine sediments and a well-preserved structure due to its young age.
Scientists have identified a new mammal species in Australia, the short-eared possum, which is morphologically and genetically distinct from the mountain brushtail possum. The discovery highlights the importance of conservation efforts for these two species, which require old-growth forests to survive.
The book, Small Is Profitable, explains how properly sizing and siting electrical production can significantly increase the value of electrical resources. This leads to improved system planning, service quality, and avoided societal costs, making seemingly expensive technologies economically viable.
UMass geoscientists are part of a team studying the retreat of Kilimanjaro's glaciers, using continuous data from a mountaintop weather station and monitoring the glaciers. The researchers found an 80% decrease in glacier area between 1912 and the end of the 20th century.
Recent geophysical data shows Mauna Loa's summit caldera swelling at a rate of 2-2.5 inches per year, indicating magma accumulation. Scientists warn that this could be a precursor to an eruption, which would be the first time imaged with precise clarity.
Scientists found that magma could reach speeds of 200-600 mph, filling parts of the repository within hours. This could displace radioactive canisters and cause extensive damage.
Researchers studied Paleocene-Eocene syncontractional sedimentation in east-central Tibet, numerical modeling of fluid flow in Utah, and syndepositional thrust-related deformation in a Central Colorado trough. The findings provide insights into the geological evolution of these regions.
Researchers have discovered that mountain streams follow a rhythmic pattern in their step-pool sequences, dissipating energy through vertical adjustments. This finding sheds new light on the complex dynamics of high-gradient mountain streams.
Researchers found Tibetans retain no deterioration in physiological processes when exposed to acute hypoxia, unlike lowlanders. This discovery could lead to novel treatments for hypoxic injury and prevention of mountain sickness.
The discovery of a new insect order, Mantophasmatodea, brings the total number of orders to 31. The species, resembling a mix between a stick insect and a preying mantis, was found in Namibia's Brandberg Mountain, which may have preserved its unique habitat for millions of years.
Roger Balm examines the extent to which original pictures of Machu Picchu were framed to fit popular ideas about lost worlds rather than provide scientific documentation. He revisits an explorer's first photo-shoot at Machu Picchu using the same camera and film as the original 1911 expedition.
Geologists find strong similarities in Silurian marine fossils between Alaska, Urals, and Siberia, indicating a shared contiguous seaway. This discovery contradicts a previous hypothesis that the Alexander terrane was located in the Southern Hemisphere during the Silurian period.
Researchers propose a more heterogeneous model of protein folding, which offers alternative pathways to the traditional view. This new understanding may lead to drugs that mimic molecular chaperones' role in fending off neurodegenerative diseases.
A study of 262 climbers found that three out of four healthy, recreational climbers have mild subclinical HAPE shortly after a modest climb. This suggests a significant risk of the disorder among climbers, highlighting the need for better markers and methods to identify individuals at risk.
The Gemini Observatory has dedicated its second telescope, Gemini South, marking a decade of work by hundreds of people to build two advanced 8-meter instruments. Astronomers in the US and around the world now have access to unprecedented sky coverage.
Researchers found that small island rivers in Taiwan and New Zealand produce high amounts of sediment, potentially impacting global climate change. The amount of sediment varies greatly between rivers, with the Cropp River in New Zealand producing 32,000 tons per square kilometer.
A new study suggests that lowland deforestation may be robbing mountain cloud forests of critical cloud cover, threatening their survival. Breaking up deforested land into a mosaic of uses can help restore cloud formation.
Researchers at Michigan Tech have deployed a laboratory on Pico mountain in the Azores to track air pollution drifting across the North Atlantic. The lab, known as PICO-NARE, will detect ozone, black carbon dust, and carbon monoxide, shedding light on the impact of local pollution on global warming.
University of North Carolina chemist Michael T. Crimmins wins national award for developing laboratory methods to create compounds with anti-tumor activity and potential health benefits. His team successfully synthesized a chemical from the gingko tree called gingkolide B, which may also delay Alzheimer's disease onset.
Scientists at University of Michigan developed a new approach to date shallow faults, essential for understanding the evolution of Earth's crust and fault processes. The technique provides precise ages within a couple of million years, narrowing down previous estimates that spanned many million years.
The USGS is studying the effects of climate change, fire, and carbon dioxide on ecosystems in America's grasslands, deserts, and mountains. Researchers have found that high mortality rates among grassland birds in Colorado may be caused by small mammals invading nests.
A University of Washington researcher found that climbers using supplemental oxygen on Mount Everest had a 3% death rate during descent, compared to an 8.3% death rate for those not using oxygen. A similar pattern emerged on K2, where none of the successful climbers who used supplemental oxygen died during descent.
Researchers found that mountainous areas can receive dramatically different amounts of pollutants and excess nutrients, creating 'hotspots' with high ecological sensitivity. The study suggests that estimates of atmospheric deposition must take into account complex mountain landscapes, elevations, aspect, and vegetation type.
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.
Yucca Mountain's long-term hydrologic stability makes it a potential site for storing nuclear waste. Calcite and opal deposits indicate minimal water flow into the mountain's cavities.
A recent USGS study found that a subalpine wetland in Colorado's Rocky Mountain National Park was a net source of carbon to the atmosphere during a two-year period, despite being a net carbon sink for thousands of years. The study suggests that climate change may be affecting the carbon balance of these wetlands.
A study published in Environmental Geology suggests that a magnitude 5 or 6 earthquake could raise the water table by up to 750 feet at the Yucca Mountain storage site, leading to potential flooding. The researchers used computer modeling based on geological data and historical quakes to make their predictions.