Articles tagged with Oceanography
Tropical Cyclone Wallace has a more circular appearance, with an eye starting to emerge according to Australian Bureau of Meteorology. The system is forecast to strengthen over the next day or two before weakening below tropical cyclone intensity.
A new study published in Geology reveals that the largest delta plain in Earth's history formed along Pangea's northern coast during the late Triassic period. The delta plain covers an area equivalent to nearly 1% of the modern world, outscaling modern counterparts by an order of magnitude.
A landmark study reveals the Arctic Tern's remarkable migration route, including an 8,000km non-stop flight over the Indian Ocean. The birds' stop-off points are also revealed, highlighting key locations in the UK and beyond.
Researchers at Rutgers University discovered that bacteria in wastewater plants transform commonly used pharmaceuticals and personal care products into new contaminants, which may harm aquatic environments. The study highlights the need for further evaluation of these emerging contaminants and their potential risks to human health.
Researchers used CubeSats to study alternative remote sensing technologies, finding they can provide added value in local severe storm forecasting. More CubeSats with increased data coverage yielded larger positive impacts, suggesting a cost-saving approach to mitigating data gaps.
Researchers found past associations between jet stream dynamics, winter precipitation, and fire activity in California, with dry extremes linked to weaker NPJ zonal velocity. Future climate simulations suggest increasing temperatures will lead to reduced snowpack, drier summers, and increased fire risk under high CO2 conditions.
Ancient fossils found in Gabon date back 2.1 billion years, revealing a multicellular organism that moved through the mud. The discovery pushes the history of locomotion in complex organisms to over 1.5 billion years earlier than previously thought.
Scientists used high-pressure techniques to measure sound velocities of a key mineral in the Earth's mantle, shedding light on its composition and role in the lower mantle. The findings suggest that subducted oceanic crust plays a crucial role in explaining the magnitude of seismic velocity reductions at depths below 660 km.
A new study by the University of Leeds found a positive association between fruit and vegetable consumption and self-reported mental well-being in the UK population. Consuming an extra portion of fruits and vegetables daily could have a significant impact on mental health, equivalent to 8 extra days of walking.
A 2-month lasting ultra-slow earthquake occurred south of Istanbul, coinciding with moderate-sized seismicity at shallow depth. The study sheds light on the interaction between aseismic slow deformation and seismically released energy, enhancing regional seismic risk assessment for the densely populated city.
A study by Dauphin Island Sea Lab team reveals black mangroves shift salt marsh trophic pathways, with grazers preferring their leaves due to higher nutritional value. Bacteria also show a preference for decomposing black mangrove leaves, altering ecosystem dynamics.
A two-year study by researchers at the Dauphin Island Sea Lab found that ten times more trash washes up on the coast of Texas than any other Gulf state. The majority of the trash was plastic, with most occurring during spring and summer months.
A new study published in GeoHealth suggests that warmer winter temperatures increase the likelihood of violent and property crimes. The relationship between climate and crime rates is thought to be linked to how climate alters people's daily activities.
Tropical Storm Xavier weakened to a remnant low pressure area on Nov 6, 2018, with strong southwesterly vertical wind shear observed. The GPM core satellite analyzed the storm's precipitation structure, revealing powerful convective storms reaching altitudes of up to 11.1 km.
Researchers from GFZ found micro-earthquakes prior to a 4.2 magnitude earthquake in June 2016, south of Istanbul. The study suggests that analyzing these small events could extend warning times for future earthquakes in the region.
Hurricane Willa produced heavy rainfall totals over 20 inches in the Pacific Ocean off Mexico's coast, with 15 inches in parts of Mexico and Southeastern Texas. NASA's IMERG data analysis revealed these extreme rainfall accumulations using satellite data from the GPM Constellation.
NASA analyzed rainfall and structure of Hurricane Michael as it developed, forecasting a major hurricane for Florida landfall. The Global Precipitation Measurement mission revealed intense rainfall accumulation totals over the Caribbean Sea, with estimates reaching 12.6 inches in some areas.
NASA tracks Tropical Storm Leslie's size and strength, forecasting heavy rainfall and strong winds. The storm is expected to bring significant wave activity to Atlantic Canada and New England coastlines.
The Global Precipitation Measurement mission analyzed rain rates in Hurricane Leslie, revealing light to moderate convective rainfall in the eye wall and over 1.8 inches of precipitation per hour on the northwestern side.
NASA's Aqua satellite captured infrared data on Hurricane Sergio, revealing strong thunderstorms with cloud tops as cold as -80°F. The storm is a category 3 hurricane with maximum sustained winds near 115 mph, forecast to strengthen then weaken over the next few days.
Research reveals a significant shift from clear to murky lakes in the continental United States over the past five years. Murky lakes have increased by 12% while clear lakes declined by 18%, posing concerns for water quality and aquatic life.
A team of scientists used infrasonic microphones, seismometers, satellite, and ground camera images to calculate the Michigan bolide's time, location, height, and yield. The analysis could help assess near-Earth object threats and improve detection capabilities for clandestine nuclear tests.
Tropical Storm Hector is forming in the eastern Pacific Ocean, southwest of Mexico, according to NASA's GPM satellite observations. The storm is expected to strengthen into a hurricane with maximum sustained winds reaching 80 knots (92 mph) early next week.
Barnacle geese accelerate their 3,000-kilometer migration in response to rising Arctic temperatures. However, the birds' early arrival is often offset by a recovery period that delays egg-laying, resulting in reduced gosling survival rates.
The remnants of former Tropical Storm Beryl are still affecting the Bahamas before moving northeastward, with a low chance of re-formation over the next two days. Environmental conditions may favor some development by the weekend as the system interacts with a strong upper-level trough.
A recent study maps the global trade routes for lobster, revealing that a growing number of nations are acting as middlemen, making it difficult to trace seafood origins and anticipate market demand changes. The Asian market, particularly China, appears to be significantly larger than previously thought, putting Maine's industry at risk.
PharmaMar has signed a Memorandum of Understanding with the Indonesian Oceanographic Research Center to study Indonesia's marine biodiversity for new antitumor compounds. The collaboration aims to develop cutting-edge technology and address unmet medical needs in cancer research.
Typhoon Prapiroon dropped over 512 mm of rain in some areas, causing mudslides and flooding in South Korea. The heaviest rainfall occurred from June 28 to July 6, 2018, affecting Japan and South Korea.
A study by the University of Portsmouth found that potentially 180 deaths in British waters from 2007-2016 were avoidable if victims wore lifejackets. Anglers aged 41-50 are at highest risk, with leisure angling having the second-highest fatality rate.
Computer scientists at Harvard SEAS developed a new algorithm that exponentially speeds up computation by reducing parallel steps required to reach a solution. The algorithm samples directions in parallel and discards low-value directions, enabling real-world summarization processes to be developed at unprecedented scale.
Professor Sarah Kang from Ulsan National Institute of Science and Technology has been appointed to the Climate Dynamics Panel (CDP) of CLIVAR. She will provide recommendations on key research priorities in climate dynamics for a three-year term.
Researchers studied targeted observation for ENSO prediction, finding that observing central equatorial Pacific improves skill by 25%, while eastern Pacific observations during April-October boost accuracy by 62%. Implementing targeted observation weakens the spring predictability barrier, significantly improving prediction skill.
Researchers found a prolonged ocean anoxic event worldwide during the Late Ordovician mass extinction, coinciding with peak glaciation and suggesting global cooling may have driven ocean anoxia. This finding could support the theory that global cooling played a role in triggering the LOME.
A new study found that consumers tend to make choices in a 'boundedly rational' way, relying on predispositions while keeping an open mind to strong evidence. This is particularly true when product quality is ambiguous, such as with generic products versus brand-name alternatives.
Researchers used GPS tracking data to visualize and sonify elephant seal group dynamics, creating a 45-minute symphony that showcases remarkable coordination in their ocean exploration. The study successfully compressed 10 years of data into a condensed musical composition, providing new cutting-edge research opportunities at KAUST.
NASA's Global Precipitation Measurement mission revealed extreme heavy rainfall in Tropical Cyclone Hola, dropping 9.5 inches per hour on the eastern edge of its low-level center. The satellite data showed convective storms reaching heights above 7.4 miles, posing a threat to Vanuatu and neighboring islands.
A new study reveals that industrial fishing activities cover more than 55% of the world's oceans, with global hot spots in the northeast Atlantic and northwest Pacific. The majority of observed fishing efforts come from five countries, including China, Spain, Taiwan, Japan, and South Korea.
Scientists have mapped the temperature and viscosity of the lower crust for the first time, finding hot rocks under much of the western US that are near their initial melting point. This study suggests significant regions of the lower crust lack strength, potentially leading to mountains being flattened over millions of years.
Researchers have discovered that different aerosol types can act as cloud condensation nuclei, affecting cloud behavior and resulting precipitation. The study highlights the importance of considering aerosol type in understanding cloud formation and precipitation interactions.
Tropical Storm Kai-Tak generated heavy rainfall in central and southern Philippines, causing major flooding and landslides. The storm's estimated precipitation totals reached up to 512 mm (20.2 inches) along its track.
A new study suggests that heat from a deep-seated oceanic mantle source, rather than a traditional mantle plume, drives crustal melting and surface volcanism in the western US. The research uses seismic tomography to peer into the subsurface and develop a hybrid geodynamic model that better matches observed geologic histories.
A new study outlines five ways to better manage China's severe air pollution problem, including conducting research on the cause of pollution and creating more effective prevention and control methods. The strategies can be applied to other heavily polluted countries as well.
GPM data shows storms from Haikui's remnants containing light to moderate precipitation, with some areas dropping rain at over 23 mm per hour. Heavier precipitation was also detected in southern Vietnam, exceeding 79 mm per hour in downpours not associated with Haikui.
A new study estimates that seals and birds consume about 100,000 tons of fish per year, primarily herring and cod. While their consumption has a significant impact on some fish stocks, such as eel, it is estimated to be lower than human fishing activities.
High-precision age dates reveal that Siletzia was built near Bremerton and its collision with North America led to a jammed subduction zone, causing tectonic ripple effects. The study provides new insights into the Pacific Northwest's evolution.
Hurricane Jose is being affected by strong northerly vertical wind shear as it makes a slow clockwise loop in the Atlantic Ocean. The storm's low-level center is located at the northern edge of a large area of thunderstorms.
Tropical Depression 15E is being affected by vertical wind shear, appearing nearly shapeless in NASA satellite imagery. The depression's movement towards the west is expected to continue over the next couple of days.
Subsea dispersant injection during the Deepwater Horizon disaster mitigated environmental damage by reducing volatile organic compound emissions in the atmosphere. This led to a decrease in human health risks for response workers and accelerated the response effort.
The study analyzed accumulated rainfall from July 24 to 31, 2017, using data from NASA's Integrated Multi-satellitE Retrievals (IMERG). The Fujiwara Effect significantly altered Tropical Storm Irwin's movement, causing it to slow down and change direction.
Typhoon Nesat is expected to make landfall in central Taiwan on July 29, with maximum sustained winds of near 65 knots (75 mph/120 kph). The storm is intensifying and will peak at 75 knots (85 mph/139 kph) before reaching Taiwan.
NASA's Suomi NPP and GPM satellites observed Tropical Storm Don developing in the North Atlantic, producing moderate to heavy rainfall rates of over 4.4 inches before weakening into a remnant low pressure area.
Georgia State neuroscientists rewired the brain of one species to have the connections of another, finding distinct neural circuits underlying swimming behavior in two closely related sea slugs. The study's results suggest that behaviors can be conserved while their neural basis shifts over evolution.
A new study found that warmer nights due to climate change can lead to increased instances of insufficient sleep, with the poor and elderly being most affected. The research shows that a single month of nightly temperatures averaging 1 degree Celsius higher than normal could result in 9 million more nights of insufficient sleep.
Researchers estimate that the next major earthquake in Istanbul will originate from the Eastern Marmara Sea due to a build-up of energy from entangled tectonic plates. This could lead to a shorter early warning period, but potentially less severe ground shaking than expected.
Researchers have found a significant relationship between solar wind speed and North Atlantic Oscillation, suggesting a faster mechanism of solar influence on atmospheric systems. The team also developed a physical model to depict the interdecadal response of air-sea systems to solar activity.
Researchers at the University of Alberta have found that sea scorpions likely used their serrated tail spines to kill ancient early vertebrates. The study suggests that these prehistoric predators could slash their tails from side to side, using a horizontal slashing motion to capture and dispatch their prey.
A study by Duke University economists found that catch shares reduce the 'race to fish' that compresses fishing seasons. This allows fishers to time their catches with market demand, reducing occupational hazards and improving fish quality. While exceptions exist, benefits still outweigh negatives.
Sub-tropical storm 11S, once a tropical cyclone, continues to swirl in the Southern Indian Ocean with asymmetric structure and baroclinic dynamic support. The disturbance is expected to further strengthen as it moves southward, transitioning into an extra-tropical system.
Scientists at Tokyo Institute of Technology have identified the key enzymes responsible for oil synthesis in microalgae. The research reveals that four lysophosphatidic acid acyltransferases (LPATs) play a crucial role in the formation and growth of lipid droplets, where TAG biosynthesis occurs.
Researchers at Harvard SEAS use kirigami cuts to create 3D structures from flat sheets by stretching and buckling material. The pop-up pattern and mechanical properties can be controlled by varying the cut orientation.