Articles tagged with Seawater
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Scientists at the University of Nottingham have found a way to produce Bioethanol using seawater and a novel marine yeast strain, reducing the need for freshwater resources. This breakthrough could help alleviate concerns over food crop and water usage, making it a more sustainable fuel alternative.
A team of scientists has found direct evidence for surface-exposed water ice on the Moon, with patchy distribution and smaller abundance compared to other planetary bodies. The discovery was made using data from the Moon Mineralogy Mapper onboard India's Chandrayaan-1 mission.
Researchers at USC have found that the Southern California coast has some of the world's highest concentrations of domoic acid, a neurotoxin produced by microscopic algae. The study suggests that man-made sources of nutrients and environmental conditions contribute to the formation of algal blooms.
Researchers at the University of Connecticut developed a new method to produce reverse osmosis membranes with controlled thickness and roughness, leading to improved efficiency and reduced fouling. The ultra-thin membranes exhibit high salt rejection and robust performance under various operating conditions.
Researchers used data from robotic floats to find that open water near Antarctica releases more carbon dioxide than thought, contradicting previous studies. The study aims to improve our understanding of the Southern Ocean's role in regulating the global climate.
A new study using data from diving robots reveals that Antarctic winter seas exhale significantly more carbon dioxide than previously believed. The Southern Ocean is currently near neutral with respect to removal of carbon from the atmosphere, contrary to previous studies.
A recent study by the GEOMAR Helmholtz Centre for Ocean Research Kiel found that glacier depth has a significant impact on plankton blooms off Greenland. The team discovered that as glaciers retreat, summer plankton blooms decrease due to reduced nutrient input from meltwater.
Tropical Storm Leepi is weakening as it moves northwest, with maximum sustained winds near 63.2 mph. The storm's interaction with nearby System 98W is contributing to its decline.
A study by Simon Fraser University aquatic ecologists reveals that young salmon may leap out of water to remove sea lice, which can reduce growth and competitive ability. The researchers found that on average, leaping salmon had 22% fewer sea lice than non-leaping fish.
Researchers found that iron-silica particles in ancient seawater helped cyanobacteria survive and thrive, paving the way for oxygenation. However, UV stress still limited their growth, contributing to the slow accumulation of atmospheric oxygen.
A NASA-NOAA satellite has captured images of Tropical Depression 16W transitioning into a subtropical system, characterized by strong winds and cold dry air from the northwest. The storm is moving north-northwest, with maximum sustained winds near 25 knots (28.7 mph/46.3 kph).
Researchers found that seagrass meadows can buffer ocean acidification in short-term periods, particularly during low tide and daylight hours. While limited, this effect could benefit marine life and aquaculture endeavors, but long-term solutions rely on reducing carbon emissions.
A team at NYU Tandon School of Engineering made surprising findings about the physics of water entry, particularly with solid objects in the water. The study revealed unexpected effects, including a decrease in pressure near a solid cylinder and an increase in pressure towards the keel of a wedge.
Researchers found that coralline algae, often considered a canary in the coal mine for ecosystem changes, are responding to ocean acidification by altering their chemical cues. This shift could impact the overall ecosystem as species interact differently with each other.
Tropical Depression 15W formed on July 22 and continued to consolidate despite disorganized appearance. The depression is expected to strengthen over open waters of the Northwestern Pacific Ocean and move just north of Iwo To Island, Japan by July 27.
Researchers at Harvard University have developed an origami-inspired device, RAD, that can capture delicate sea creatures like jellyfish, squid, and octopuses without harming them. The device uses a folding polyhedral enclosure to trap organisms, allowing scientists to collect data and then release them unharmed.
The Atlantic Ocean circulation is slowing down due to natural fluctuations, but this slowdown will lead to more rapid surface warming in coming decades. The study suggests that the current's speed determines how much surface heat gets transferred to the deeper ocean, and a quicker circulation would send more heat to the deep Atlantic.
Researchers successfully quantify hormone levels in whale breath for the first time, providing a new non-invasive method to study whale health. The technique allows for rapid and short-term acute responses to stressors, such as entanglement hazards and vessel strikes.
A recent study reveals that a massive influx of freshwater into the North Atlantic led to intensive glacier melting in the North Pacific, thousands of kilometers away. This process highlights the alarming consequences of modern ocean warming on polar ice sheets and sea level rise.
A research team from Woods Hole Oceanographic Institution found the fingerprint of a massive flood of fresh water in the western Arctic, which is believed to have caused an ancient cold snap around 13,000 years ago. The cause of this event, known as the Younger Dryas, has remained a mystery for decades.
A new study by Woods Hole Oceanographic Institution reveals a significant link between river outflow and coastal sea level change. The model predicts that variations in annual river flow can raise or lower coastal mean sea level by several centimeters.
Researchers found that stronger westerly winds near Antarctica led to massive CO2 releases in the past, similar to current human-caused climate change. This contraction and strengthening of winds can significantly impact atmospheric CO2 concentrations and future climate.
Researchers from ETH Zurich have found that cold, iron-rich seawater from the North American continental slope is captured by meanders of the Gulf Stream and carried out to the North Atlantic Gyre, enriching it with iron. The study suggests that this source may deliver up to 15% of the iron delivered by Saharan dust.
Scientists at Southwest Research Institute found large, carbon-rich organic molecules emanating from Enceladus' subsurface ocean. The discovery indicates the moon's rocky core and warm water interact to form complex molecules, satisfying key requirements for life as we know it.
Researchers at UChicago developed a new model of water behavior under extreme temperatures and pressures using quantum simulations. The model provides insight into the properties of water deep inside the Earth's mantle and has implications for understanding life on exoplanets.
Researchers found that adult female great white sharks spend more time in warm-water eddies than cold-water eddies, particularly at depths of 450 meters. These preferences may be driven by the abundance of fish and squid in the warmer eddies.
Researchers investigated Halocynthia roretzi tunic's mechanical properties, finding that mass transferred and deformed in response to temperature and mechanical stimuli. The tunic's composition varied by position, with larger layer thickness linked to reduced mass increments.
Geologists analyzed 135 Mississippi River water samples, revealing that 75% of sulfate comes from pyrite mineral rusting, a process enhanced by human activities. This finding highlights the magnitude of human impact on natural chemical cycles and potential effects on ocean acidification.
Decades of satellite monitoring reveal Antarctic ice loss, with glaciers and ice shelves thinning due to warm ocean water, leading to increased sea level rise. The continent's ice cover has been impacted by climate variability, atmospheric, and ocean circulation changes.
Researchers found an increase in high waves and winds in the Arctic Ocean due to melting sea ice. This increase poses a significant threat to safe navigation and coastal populations.
Researchers investigated how boron evaporates in seawater to produce higher-quality drinking and irrigation water. They found that both multi-stage flash and air-gap membrane distillation technologies were effective in reducing boron concentrations below the Saudi standard of 0.5mg/l.
Tropical Storm Maliksi forms in the Philippine Sea with sustained winds of near 40 knots (46 mph), moving north towards Japan. The storm's circulation center is over open waters, extending bands of thunderstorms over northern and central Philippines.
A new MIT system captures water evaporating from cooling towers, reducing water loss and providing clean drinking water for coastal cities. The system's efficiency is improved by using ion beams to charge water droplets, allowing them to be drawn toward a mesh of wires.
Research led by the University of Sydney found that warm water events decrease the ratio of healthy oils to protein in fish and squid, while cold water events increase their nutritional quality. This has implications for marine life, including humans, who consume similar foods.
A new study by California Sea Grant reveals that even small amounts of running water can make a big difference for juvenile coho salmon in coastal California streams. The research found that pools interconnected by water can help young salmon survive through hot, dry summer months.
Tiny dinoflagellate fossils discovered in Jurassic rocks of south-western Queensland suggest a short-lived precursor to the Eromanga Sea. The fossils date back 148 million years, providing evidence of rising sea levels and incursions of saltwater inland.
Researchers from OSU and NOAA have mapped over 1,000 underwater methane seep sites off the Oregon coast, finding that much of the methane is solidified as hydrates beneath 500 meters. The discovery raises concerns about environmental impact and potential energy sources.
A new species of microcrustacean, Stygiopontius senokuchiae, was discovered in a Japanese deep-sea hydrothermal vent. The species has distinct morphological differences from other Stygiopontius copepods found in the Atlantic and East Pacific Oceans.
Scientists documented dozens of dolphins and pilot whales, as well as rare Sowerby's beaked whales, endangered sperm whales, and giant ocean sunfish. The aerial survey revealed an incredible abundance of marine life in the Northeast Canyons and Seamounts Marine National Monument.
Researchers at the University of East Anglia used satellite-tagged seals to collect data on water temperature and salinity in West Antarctica. The study found that warm, salty deep water is more common during winter months, suggesting increased ice sheet melting.
A new analysis found that record-breaking ocean heat fueled Hurricane Harvey, with the Gulf's waters being warmer than any time on record. The hotter-than-normal conditions supercharged the storm, fueling it with vast stores of moisture, resulting in devastating flooding.
Researchers found that the Baltic Sea is experiencing extreme changes, such as warming and oxygen-free zones, which can be used to predict future global ocean changes. The region's unique characteristics make it an ideal model for studying coastal ocean management and sustainable development.
Research from Hokkaido University reveals that low rises on the ocean floor regulate surface flows, creating sharp SST fronts with significant impacts on climate and marine resources. The study found that Rossby wave propagation is deflected by eddy-driven flows over bottom rises, leading to thickness jumps and jet formation.
Researchers discovered significant reduction in Holocene intermediate water ventilation from the Sea of Okhotsk, likely caused by elevated sea surface temperatures and reduced sea ice. This finding has implications for future climate warming, suggesting similar reductions in ventilation and oxygenation may occur.
Researchers found that the Ediacara Biota, soft-bodied ocean dwellers, lived off bacterial primary production and organic matter. This suggests they inhabited oligotrophic regions with sufficient nutrients for feeding.
Research found that freshwater systems process excess carbon and nitrogen through photosynthesis and burying phosphorus, reducing ocean pollution. The effectiveness of these processes depends on water residence time in rivers and lakes.
The International Thwaites Glacier Collaboration aims to improve understanding of global sea-level rise by studying the glacier's past behavior. By analyzing sediment cores and geophysical data, scientists can better predict ice melt and sea-level rise in the future.
The Thwaites glacier, part of the West Antarctic Ice Sheet, is under study due to its potential impact on sea levels. Researchers will use radar and seismic sensing to investigate the glacier's response over decades and centuries.
Researchers at University of Southern Denmark found that flooding coastal land can create well-functioning marine ecosystems, attracting visitors and wildlife. The Gyldensteen Coastal Lagoon, a 214-hectare area in Denmark, has shown promise as a carbon sink and is developing into a diverse ecosystem.
A new study by Georgia Tech and Georgia Aquarium explores the diverse community of marine microorganisms living in the aquarium's water, revealing dynamic changes over time. The research aims to improve our understanding of these tiny organisms and their impact on aquatic ecosystems.
A team of researchers discovered that deep ocean aquifers can break down more refractory carbon than previously thought. Microbes in the aquifer consume carbon, changing the composition of the surrounding seawater. This finding has the potential to reshape our understanding of carbon cycling in the deep ocean.
Scientists discover small microbes removing nitrogen from seawater in microenvironments with low oxygen levels, expanding the nitrogen cycle beyond previously thought regions. This finding changes our understanding of ocean responses to climate change.
A new study reveals a previously undocumented process where melting glacial ice sheets further accelerate ice melt and sea level rise by making the ocean's surface layer less salty and more buoyant. Fresh glacial meltwater prevents deep mixing in winter, allowing warm water at depth to retain its heat and cause further glacial melting.
The Technical University of Munich (TUM) has developed an adaptive algorithm called ALES+, which can accurately measure sea levels in both open and ice-covered ocean areas. This improvement enables researchers to track changes in sea level and ocean currents, crucial for understanding climate change.
The Atlantic overturning has slowed down by 15% since the middle of the 20th century due to human-caused global warming. This weakening causes widespread cooling in the northern Atlantic and shifts the Gulf Stream northwards.
New research shows Atlantic Ocean circulation has weakened by 15-20% since the mid-1800s, posing a threat to weather patterns and sea levels. The weakening of the Global Ocean Conveyor Belt could disrupt climate regulation and lead to more rapid sea level rise on the US East Coast.
A team of researchers found that changes in sea levels during the Early Triassic period were caused by variations in the Earth's tilt, affecting ocean and groundwater volumes. The study suggests that this natural process may contribute significantly to future sea-level rise.
Researchers at the University of Texas at Austin have developed a new technology using combined gel-polymer hybrid materials to produce clean drinking water from any source. The system uses ambient solar energy to power evaporation, reducing energy consumption and increasing water volume.
New research suggests that high sea levels in the Mediterranean Sea may have triggered the formation of Mount Etna's distinctive cone structure. This theory proposes that changes in the volcano's magma behavior coincide with periods of rising sea levels, which could also explain similar changes at other volcanic sites worldwide.
A study by GEOMAR and international colleagues reveals a 4-fold reduction in Pb concentrations in European surface waters since the phasing out of leaded gasoline. However, legacy Pb from Mediterranean sources persists, suggesting sediments are now a new source of Pb to the environment.