Articles tagged with Seawater
Researchers report rapid expansion of ocean acidification in the western Arctic Ocean, with waters becoming more acidic and extending deeper. This phenomenon threatens marine life, including clams, mussels, and pteropods, which are crucial to the diet of salmon and herring.
A new study by Australian National University has found evidence of seawater cycling as deep as 2,900km into the Earth's mantle, raising questions about how the atmosphere and oceans formed. The research suggests alternative theories, such as icy comets or meteorites bringing water to Earth, could be plausible.
The deep ocean floor may experience drastic changes in biodiversity by 2100 due to warming temperatures, increased acidification, and reduced food supply. This will lead to the dominance of smaller organisms, with some species thriving while others die or migrate to other areas.
Tropical Cyclone 8P was quickly dismantled by strong wind shear, with its maximum sustained winds near 40 mph. The storm's journey was marked by rapid movement and shifting winds, ultimately leading to its transformation into an extra-tropical system.
A recent study found that massive warm-water eddies in the Caribbean Sea contribute to intense hurricanes like Matthew. The research team measured ocean temperature, salinity, and currents to better understand these oceanic features.
Researchers confirm that the floating ice shelf is strongly coupled to the ocean below and Nares Strait, with temperatures changing with seasons and tides. Temperature data shows warming of ocean water at an average rate of 0.03 degrees Celsius per year, consistent with adjacent studies.
The study reveals that the ocean's oxygen content has decreased by more than 2% over the last 50 years due to global warming. This decrease can have far-reaching biological consequences for marine life, particularly large fish species.
A NASA study reveals that meltwater from the Greenland Ice Sheet can drain through aquifers and fractures in the ice, reaching the ocean. This discovery could significantly impact computer models of sea level rise, providing new insights into the Greenland contribution.
Scientists discover Quaternary ruptures along the Leech River fault, capable of producing earthquakes MW >6, highlighting seismic risk exposure. A new continent, Zealandia, geologically separate from Australia and Antarctica, is identified as a major geological entity.
Researchers found that diatoms' rapid growth creates algal blooms that deplete nutrients in the upper water layer, which then affect global ocean currents. Diatoms absorb zinc and silicon to form shells and transport these trace elements through deep ocean currents.
The Comprehensive Everglades Restoration Plan has achieved positive results, with more water flowing through the system than before. However, the plan's failure to account for climate change poses a significant challenge, and future updates are needed to incorporate rising sea levels and changing rainfall patterns.
Researchers have discovered that geostrophic balance becomes invalid at smaller scales, making sea level data unreliable for calculating ocean circulation. At high resolution, sea level can accurately calculate circulation in areas with persistent eddies, but not in areas dominated by internal waves.
Researchers found that Earth's rotation affects meltwater behavior, keeping it at depths of several hundred meters. The team measured turbulence in meltwater as it flowed out of a cave beneath the Pine Island Glacier and used a VMP23 to detect subtle fluctuations in water.
A Japanese research group used a new DNA analysis technology to detect 128 fish species in Maizuru bay, Kyoto prefecture. This method, known as eDNA metabarcoding, allowed them to survey fish in multiple areas during a short time period, detecting nearly 80% of the species present.
Foraminifera, tiny unicellular organisms, produce better shells in acidic water due to a self-regulating biochemical mechanism. This discovery challenges the prevailing theory and could lead to increased CO2 levels in oceans, resulting in more rapid global warming.
A team of researchers at New Jersey Institute of Technology has developed spectral and co-spectral techniques to measure changes in subsurface water temperature and salinity. The methods, validated with a year's worth of data from two beaches in Alaska, can help coastal scientists anticipate changes in coastal ecosystems.
A new study from the Woods Hole Oceanographic Institution reveals that Antarctic Bottom Water has freshened at an unexpected rate between 2007 and 2016, potentially altering ocean circulation and contributing to sea level rise. The researchers hypothesize that a recent landscape-changing event may be responsible for the shift.
A new electrochemical technique can remove nickel from contaminated seawater by trapping it in calcareous deposits within a week. This cost-effective method uses galvanized steel electrodes and does not deplete calcium and magnesium levels in the water.
Researchers from Moscow Institute of Physics and Technology create a precise method for measuring ocean temperature using Raman spectroscopy, enabling accurate tracking of thermal energy flows in the Arctic. The technique's accuracy is comparable to current direct measurements, opening up new possibilities for monitoring sea surface te...
Two new phytoplankton groups have been found to favor warmer oceans, defying the expectation that eukaryotic species decline in these conditions. The discovery was made using over 6,000 RNA sequences and time-series sampling, providing insight into future ocean ecosystems.
A VIMS research team has deployed a high-tech mooring beneath the Antarctic ice to monitor CO2 levels in the Southern Ocean year-round. The study aims to improve understanding of global climate change and its impacts on marine life.
A new study confirms the steady warming of oceans over the past 75 years, with a rate of 0.12 degrees Celsius per decade since 1997, contradicting claims of a global warming 'hiatus'. The research uses data from buoys, satellites, and Argo floats to support the NOAA findings, providing accurate measurements of ocean temperatures.
A recent study suggests that warmer oceans and increased rainfall will lead to more intense typhoons in the western Pacific. The research found that a lack of ocean water mixing, caused by freshwater from increased rainfall, can increase storm intensity.
The Arctic coast's thawing permafrost leads to increased erosion, releasing greenhouse gases and nutrients into the sea. This alters ecosystems, affects traditional fishing grounds, and impacts the Arctic population's way of life.
Research from the University of Southampton found that the world's wet regions are getting wetter and dry regions are getting drier, with a change of about 2% over the last 60 years. This process is called amplification of the water cycle, which is happening at a slower rate than previously predicted.
Scientists at NASA's Goddard Space Flight Center are developing a new method to track ocean heat using satellite magnetic field observations. The approach relies on the electrical conductivity of seawater and its temperature fluctuations, which can be detected from subtle changes in Earth's magnetic field lines.
Researchers have developed a catalyst that accelerates sodium-air reactions in seawater batteries, achieving an average discharge voltage of 2.7 volts over 100 cycles.
Researchers built a marine archive by analyzing annual growth increments in clam shells from the North Icelandic Shelf. The study found that ocean variability played an active role in driving major pre-industrial climate fluctuations.
A University of Miami research team analyzed sea spray droplets generated from breaking waves and found that the amount of large droplets is 1000 times more than previously thought. This information can be applied to hurricane models to improve intensity predictions, aiding in people's safety.
Sea urchins and microorganisms have been found to 'drink' seawater, extracting calcium ions through a network of bubbles within their cells. This method may be more energy-efficient than previous theories, but also presents challenges in manipulating ions in the sea water.
The deep meridional overturning circulation (MOC) in the South China Sea has made significant progress, driven by the Luzon Strait overflow and enhanced cyclonic circulation. The study reveals an unclosed 'sandwich' structure with upwelling areas primarily located in slope regions.
Research reveals that the grounding line of Pine Island Glacier retreated from a prominent seafloor ridge by 1945, with final ungrounding occurring in 1970. The team's findings suggest that ice-sheet retreat continued even when climate forcing weakened.
Researchers have developed a new method to track ocean temperature changes using internal tidal waves, which can be detected through satellite data. This approach is cheaper and more reliable than existing methods, allowing for long-term monitoring of ocean warming without harming marine mammals.
Research from Oregon State University reveals that rockfish larvae stick together in sibling groups until they move to shallower water. The study sheds new light on how rockfish disperse and recruit in the ocean.
A new study from the Woods Hole Oceanographic Institution explains that bacteria break down dissolved organic matter in seawater, creating methane as a byproduct. The researchers found that microbes use polysaccharides to access phosphorus, a rare nutrient in seawater, which is essential for their survival.
A study published in PLOS ONE found that environmental DNA (eDNA) sampling correlates closely with trawl catches of subarctic, deepwater fish species in Greenland. This non-invasive method detected a higher abundance of the Greenland Shark and identified 26 families of fish, including rays and halibut.
A liquid ocean beneath Pluto's surface is suggested as the best explanation for its unique features, including Sputnik Planitia. The study provides evidence for a subsurface ocean and challenges traditional theories about Pluto's composition.
New study discovers higher latitude ecosystems recovered rapidly after the Permian-Triassic boundary, which marked the World's most cataclysmic extinction event. The finding sheds light on the global extinction process and ecosystem recovery at higher latitudes.
Shane Ardo will use the funding to advance his solar-powered desalination innovation, which aims to provide sustainable and inexpensive access to freshwater. The technology has the potential to reduce costs and environmental impact of conventional desalination plants.
The discovery of 500 bubbling methane vents off the US West Coast has revealed a giant methane seep along the entire coast of Washington, Oregon, and California. This finding has doubled the number of known methane-seeping vents in US waters, highlighting the need for further research to understand their impact on the environment.
Tropical Storm Nicole has transitioned into an extra-tropical storm, characterized by a change in primary energy source from latent heat release to baroclinic processes. The storm is expected to bring rough surf and strong winds to Bermuda and the US East Coast, particularly through Wednesday night.
A new study reveals that corals selectively feed on specific types of bacteria, promoting their growth and influencing the surrounding microbial community. This interaction drives microbial growth and nutrient cycling, with corals releasing complex compounds to stimulate bacterial growth.
Scientists at Michigan State University have developed a new framework to understand the complex relationships between urban water management and global sustainability. The study uses telecoupling processes to analyze the water dynamics of Beijing, China's capital city, and its impact on distant regions. By combining local and global p...
Researchers have recorded a new sighting of Günther's sea snake, a rarely seen venomous species, in Iranian coastal waters. The discovery expands the species' known range and brings the total number of sea snakes in the area to ten.
Researchers calculate basin-wide measurements of dissolved organic sulfur in the East Atlantic and Southern Ocean, finding it to be the largest oceanic reservoir of organic sulfur. The discovery challenges current understanding and suggests active involvement in the microbial loop, similar to organic nitrogen.
A University of Washington study links Atlantic Ocean slowdown to changes in the Southern Hemisphere, which affects eastern North America and Western Europe. The shift is not driven by Arctic sea ice melting but rather by winds in the Southern Ocean.
A team of earth scientists evaluated how various processes affect past measurements, revealing that many high-quality historical records are from locations with reduced local sea level change compared to the global average. This suggests a minimum 14cm increase in global sea level rise during the 20th century.
Tropical Cyclone Gaston has weakened significantly, with its eye disappearing and clouds pushed to the northeast. Warnings have been issued for several islands in the Azores, including Flores and Corvo, Faial, Pico, Graciosa, Sao Jorge, and Terceira.
Hurricane Gaston has a large cloudless eye surrounded by powerful thunderstorms, according to NASA's Suomi NPP satellite. The storm is moving northeast at 9 mph and may affect the Azores Islands later in the week.
A recent study reveals that the expansion of Antarctic sea ice has caused a significant freshening of the Southern Ocean. The increased freshwater flux from the sea-ice conveyor belt explains the observed salinity changes in the region.
A new study suggests that sustainable management of the high seas can help compensate for expected losses in fish stocks due to climate change. Closing the high seas to fishing could increase catches in coastal waters by up to 10%, benefiting both productivity and reducing climate change impacts.
Arctic sea ice cover is still declining despite slower melt rates, scientists say. The new normal for sea ice extent is expected to remain low due to extreme weather conditions.
Researchers found a correlation between Pacific sea level changes and global surface temperatures, with steeper tilts in the western Pacific linked to cooler temperatures. The study uses sea level data from 1993 to 2016 to estimate global surface temperature increases by the end of 2016.
Tropical Storm 12W formed over the open waters of the Northwestern Pacific Ocean on August 18, 2016. The storm was spotted by NASA's Aqua satellite and has tracked northwestward at 16.1 mph, expected to intensify into a typhoon near Japan
Researchers found that tropical sea urchin eggs and larvae are vulnerable to temperature changes, with early stage larvae dying at temperatures above 32 degrees C. Long-term exposure to warmer waters reduces larval survival and growth, highlighting the impact of climate change on these small marine animals.
Researchers from USF College of Marine Science and the Florida Fish and Wildlife Conservation Commission expect no major red tide blooms along Florida's west coast this year. Nutrient levels in the Gulf of Mexico favor non-toxic algae, suppressing red tide bloom development.
Researchers have mapped underground drainage systems connecting fresh groundwater and seawater, highlighting vulnerable sites to saltwater intrusion. The study identifies areas where drinking water is at risk due to ocean contamination or saltwater invasion.
A new study identifies distinct hotspots in the US coastline where freshwater discharge from underground water sources can contaminate coastal waters. These hotspots, which account for half of all freshwater discharge, are particularly vulnerable to groundwater-borne contamination and affect 12% of the coastline.
Tropical Storm Howard is weakening due to cooler waters and increasing instability, with maximum sustained winds decreasing to near 45 mph. Forecasters expect the storm to become a remnant low in 24-36 hours, potentially sooner if organized convection redevelops.
Tropical Storm Howard is moving west through the Eastern Pacific Ocean with maximum sustained winds near 60 mph and higher gusts. NASA's Aqua satellite provided forecasters with visible and infrared imagery of the storm on August 1-2, capturing its bulk thunderstorms east of the center.