Articles tagged with Oceanography
Researchers have developed a new nanotube technology that can generate sound waves for submarine sonar while also canceling out noise. This breakthrough could enhance underwater detection and stealth capabilities for military submarines.
Tropical Depression 6E has been downgraded to a remnant low pressure system in the Eastern Pacific Ocean. It's now being stretched by strong vertical wind shear and moving into cooler waters, making strengthening back into a tropical storm unlikely.
Tropical Depression 6-E has formed in the Eastern Pacific Ocean and is struggling to organize due to moderate to strong wind shear. The storm's maximum sustained winds are near 35 knots (38 mph), and it is expected to continue moving west-northwestward over the weekend.
Researchers have developed carbon nanotube speakers that can generate sound waves and cancel out noise, ideal for submarine sonar. These 'nanotube speakers' can also be tuned to specific frequencies to detect underwater objects, enhancing stealth capabilities.
New research suggests that liquid water existed all over Mars during its early history, with studies of minerals found in craters revealing a global alteration by water. The discovery provides clues about the planet's potential habitability and suggests sites for future landers.
NASA satellite imagery captures Tropical Depression 2-E and System 92E near western Mexican coast. The system is expected to produce heavy rain and life-threatening flash floods along the immediate coast of Oaxaca.
Scientists are investigating new clean-up methods to limit environmental damage, including applying dispersants underwater and boosting naturally-occurring bacteria that can break down oil. The effectiveness of these approaches remains to be seen as massive amounts of oil remain in the ocean.
The MODIS instrument on NASA's Terra satellite captured a visible image of the ash plume from Iceland's Eyjafjallajökull volcano, drifting south and east over the Northern Atlantic Ocean. The ash plume appeared lighter in color than previous days, indicating a potential decrease in volcanic activity.
The Best Agers project aims to identify methods to keep the older generation in the workforce, as Europe faces an aging population. Nineteen organisations from eight Baltic Sea countries participate in the project, which has a budget of SEK 44 million.
Tropical Storm 90Q, the second known cyclone in South Atlantic Ocean history, is located over 1,350 miles east of Buenos Aires. The storm is moving quickly south-southeast and expected to be merged with a cold front by weekend.
A recent survey conducted by LSU's Public Policy Research Lab found that only 30% of respondents believe the federal government has a well-developed plan for hurricane response. In contrast, 80% of residents have their own well-developed plans, indicating a recognition of the need for individual preparedness.
A magnetic study of the Colima volcanic complex in Mexico reveals that faults exhibit distinct magnetic anomalies, which can be used to improve geological interpretations. The findings have significant implications for hazard assessments in densely populated areas around active volcanoes.
The February issue of Lithosphere highlights the evolution of the northwestern Red Sea, with two main tectonic events contributing to its formation. The study also explores the Fish Lake Valley fault in eastern California and the incision of major rivers into the Tibetan Plateau's bedrock.
The National Evolutionary Synthesis Center is part of a major digital data initiative to improve access to Earth's biota and environment data. Dozens of institutions partner to provide secure, permanent access to biological and earth sciences data.
A new study by Purdue University researchers suggests that local and regional strategies such as creating green spaces and buffer zones in urban areas could help address climate change. The study found that greener land cover contributes to cooler temperatures, while any other change leads to warmer temperatures.
Researchers track the pattern and timing of a new subduction zone's birth in Fiordland, New Zealand, and analyze eclogites carried to the surface via serpentinite channels. The study also investigates the Yukon-Tanana terrane's crustal growth, finding predominantly crustal recycling with minor juvenile crustal growth.
NASA's GOES Project created a movie of Tropical Storm Danny from August 25-27, showcasing his formation and journey up the US East Coast. The storm made landfall with maximum sustained winds near 60 mph, and is expected to turn north.
The online video showcases the entire 2008 hurricane season, including all 17 tropical cyclones, with detailed cloud imagery and storm tracks. The animation is based on six months of GOES imagery at 30-minute intervals and features television production-quality visuals.
A nationwide survey found that nearly nine out of ten adult Americans obtain weather forecasts daily, placing a value of 10.5 cents on each forecast, resulting in an annual value of $31.5 billion.
Researchers at the University of Illinois have discovered that volcanic plumes rotate around their axis due to a phenomenon called mesocyclones. This rotation triggers lightning and creates waterspouts or dust devils. The study provides new insights into understanding volcanic eruptions and predicts effects more accurately.
Two new greenhouse gases, nitrogen trifluoride (NF3) and sulfuryl fluoride (SO2F2), are accumulating in the atmosphere at a rapid rate. These potent gases have significant global-warming potential and are used in industrial processes as alternatives to other harmful gases.
The US Department of Homeland Security has developed a non-lethal traffic stopper called SQUID, which uses sticky tendrils to immobilize vehicles. The device, inspired by a sea creature and Spiderman's webbing, aims to provide a safer alternative to traditional methods of stopping fleeing drivers.
Calculations by Dr. Eduardo Zorita and colleagues estimated the likelihood of warm record years after 1990 being an accident is extremely low, suggesting external influences
Researchers have identified trapped water as the cause of regular tremors under Vancouver Island, explaining episodic tremors every 14 months. The study provides a detailed glimpse into the geological mechanics beneath the island, bringing scientists closer to understanding earthquake cycles.
A team of researchers has discovered a slow earthquake triggered by the 2007 dike intrusion at Kilauea Volcano, demonstrating the connection between magmatism and earthquake faulting. The study used satellite and GPS data to track the movement of magma and show how it triggered the slow earthquake on Kilauea's south flank.
A new study suggests mountain ranges like the Andes can rise rapidly, doubling their heights in a short period. The traditional theory of plate tectonics will need to be revised to include the process of delamination, which proposes that the 'root' beneath the crust heats up and breaks free, allowing mountains to quickly rise.
Researchers have developed a library of over 300 antibodies effective against H5N1 avian flu, offering potential treatment for infected individuals and a step towards a universal flu vaccine. The antibodies may also enable the design of vaccines with cross-subtype neutralizing activity.
Florida State University has been awarded a two-year $2.5 million grant from the US Department of Agriculture to provide climate forecasting for farmers in Florida, Georgia, and Alabama. The research will help farmers make informed decisions on planting crops such as peanuts, cotton, and strawberries.
Research suggests that Atlantic leatherback turtles have two separate foraging areas, one in the high latitudes of the North Atlantic and another in low latitudes off the African and Iberian coasts. This dichotomy has significant implications for the species' survival, as damage to either habitat could have dramatic repercussions.
A UBC study suggests that an ancient magma ocean may have existed beneath the Earth's surface, accounting for the discrepancy between the planet's mantle and core composition. This layer of molten rock would have stored some of the elements found in chondrite, primitive rocks from the earliest time of the solar system.
A new analysis has identified cancer-causing compounds, air pollutants, and other substances of concern in the production of carbon nanotubes. Researchers are working with industry partners to develop environmentally sustainable manufacturing methods and filter systems to minimize hazardous by-products.
A team of LSU researchers, led by John Day, join forces with world-renowned coastal scientists to publish a commentary on delta preservation. The article emphasizes the need for science-guided restoration efforts in the Mississippi River Deltaic Plain due to climate change and resource scarcity.
A recent study reveals that the Brazilian rainforest heavily depends on dust from a specific valley in Africa. The Bodélé valley in northern Chad provides a significant portion of the vital minerals needed for the Amazon forest's existence, with 56% of the dust reaching the region originating from this source.
Researchers used NASA earth observations to predict wildfires in southern California, identifying key factors such as plant moisture and fuel condition. The study found that the instruments can detect conditions favorable for wildfires, improving wildfire prediction and monitoring capabilities.
Dick Kerr, Senior Writer at Science, receives GSA's highest public service award for his work in enhancing earth sciences understanding. With over 1200 science-news articles written, Kerr has made significant contributions to geoscience education and dialogue.
Researchers studied polar motion over three and a half months, finding small loops up to a cell phone size due to weather patterns and oceanic influences. The study demonstrates day-to-day changes in atmospheric pressure affect Earth's rotation for the first time.
Research suggests tundra areas are greening over the entire growing season, with boreal forests showing significant greening in May and June. However, these gains are offset by browning in July and August, highlighting a need for improved process models of ecosystem responses to climate change.
Scientists at the Woods Hole Research Center have developed high-resolution maps of the built environment for the Chesapeake Bay watershed, capturing impervious surface cover and its implications for biogeochemical and hydrological processes. The new maps are being used to assess water quality and inform restoration efforts in the region.
A new model predicts that implementing effective governance and conservation policies could preserve up to 73% of the Amazon forest by 2050. The study highlights the urgent need to redirect economic forces towards sustainable development and conservation.
Catalytic converters in US vehicles emit toxic pollutants when they fail, putting public health at risk. Researchers detected these pollutants using advanced analytical techniques.
Researchers and students are working together to advance scientific understanding of the role of major arctic rivers in the changing arctic and global systems. The Student-Partners Project aims to collect high-frequency river water samples, fostering appreciation for the pivotal role rivers play in the Arctic System.
A study using satellite observations found increased photosynthesis and growing season length in Canadian tundra, while forests declined in photosynthetic activity. The decline is linked to long-term warming and drying, challenging initial predictions of predictable forest changes.
Scientists have discovered a connection between ancient climate, carbon dioxide levels, and vegetation in deep sea algae. The study found that atmospheric carbon dioxide levels were up to five times greater than today during the Paleogene Period, leading to rapid global cooling and the origin of land plants sensitive to CO2.
George J. Flick Jr.'s Sea Grant Coherent Area projects led to the establishment of the Virginia Graduate Marine Science Consortium, providing educational and research programs along the Virginia coast. His outreach programs have also addressed problems affecting the seafood industry, with funding for industry, academia, and regulators.
The High-Altitude Particle Experiment Aircraft (HIAPER) is a modified Gulfstream V jet that can fly up to 51,000 feet and cover 7,000 miles. With its advanced capabilities, HIAPER will allow scientists to study atmospheric processes, environmental phenomena, and interactions between oceans and atmosphere.
Scientists at British Antarctic Survey tracked albatross migration patterns using tiny logging devices, revealing that over half of birds made round-the-world journeys in just 46 days. The study provides crucial information for governments and fisheries commissions to implement measures reducing bird deaths by up to 95%.
Researchers have created a North American Drought Atlas CD-ROM, mapping year-by-year occurrences of droughts over the last 2005 years. The atlas provides essential paleoclimate data with applications to science, policy, education, and history.
Scientists are conducting an experiment to gather information about the deep underlying structures of the San Andreas fault line using a highly sensitive gravity instrument. The goal is to affordably gather data and compare future surveys to track changes in the shallow crust beneath the surface.
Researchers develop a system to predict West Nile virus risk based on climate factors, including temperature. The model will provide early warnings for public health professionals and serve as a model for other vector-borne disease risks.
A six-week field experiment will gather data on regional air quality, intercontinental transport of polluted air masses, and human health effects. The study, ICARTT, involves five countries, universities, and government agencies.
Researchers create maps of science from vast digital data collections, enabling exploration and analysis of interconnected scientific disciplines. The results provide insights into how scientists and their work are connected, with potential applications in education, funding, and industry.
A long-term ocean pattern, Pacific Decadal Oscillation (PDO), influences West Coast temperatures and precipitation up to a year in advance. The study reveals correlations between PDO patterns and temperature and precipitation trends on the West Coast.
Researchers found a periodic increase in slip rate every three years along the northern half of the central San Andreas Fault, indicating a higher probability of moderate to large quakes. This cycle is characterized by an upswing of microquakes, followed by moderate to large earthquakes six to seven times more likely to occur.
The Jakobshavn Glacier, one of Greenland's major drainage outlets, has been found to be accelerating and retreating rapidly. Glacial scientists have discovered that the glacier is now flowing at speeds of up to 9 kilometers per year, with ice thinning rates reaching an alarming 12 meters per year.
V. Zakharov received the 2003 Dirac Medal of the ICTP for his groundbreaking work on mathematical physics of nonlinear phenomena, particularly in the field of weak wave turbulence. His research has significantly contributed to our understanding of plasma physics, hydrodynamics, magnetism, and optics.
Researchers at UCL create first laboratory-generated deep and intermediate focus earthquakes, recreating extreme pressure and temperature conditions. The study reveals dehydration reactions as the cause of these enigmatic earthquakes, which can occur hundreds of kilometers below the Earth's surface.
Nancy Bowers, a Scripps Institution of Oceanography doctoral student, has been awarded the 2002 Chrysalis Scholarship from the Association for Women Geoscientists. Her research focuses on analyzing high-frequency fluctuations in Earth's magnetic field as observed in oceanic crust data.
Researchers at the University of North Carolina at Chapel Hill have discovered an acid-catalyzed process that brings about secondary organic aerosol formation, potentially generating five to 10 times more aerosol in the atmosphere. The study's findings appear to explain various phenomena leading to aerosol formation and have important ...
Researchers uncovered characteristics of faults that move backwards, contrary to conventional observations, and found the material within faults is significantly different than its surroundings. The study provides a new way to identify potentially active faults and better understand the earthquake process.
A recent study reveals that Houston gets more lightning than surrounding areas, with a higher frequency of cloud-to-ground flashes in the summer months. The city's unique combination of urban heat island effects and air pollution may be responsible for this increased activity.