Articles tagged with Tides
Cosmic slurp: Researchers used NSF XSEDE supercomputers to simulate tidal disruptions of stars by supermassive black holes, predicting their observational signatures. This will help advance our understanding of galactic physics and properties of supermassive black holes.
A new study by Virginia Institute of Marine Science demonstrates the ability to predict a hurricane's storm tide at neighborhood and street levels. The team's high-resolution computer model was able to simulate water levels within 6-8 inches of those observed in New York City during Hurricane Sandy's approach and landfall.
During strong El Niño events, tropical western Pacific sees a sudden drop in sea level, causing prolonged droughts in Samoa and triggering tropical cyclones near Tahiti. Computer climate models predict that these drops could become seasons ahead, helping island communities prepare for the next event.
Research by Guy Beauchamp reveals semipalmated sandpipers feed differently depending on group position, with peripheral birds acting as sentinels. The study sheds light on the mechanisms behind group living and its benefits for survival.
Tufts University geologist Andrew Kemp warns that rising sea levels make coastal areas vulnerable to flooding from smaller storms. He cites glacio-isostatic adjustment and ocean thermal expansion as factors contributing to sea-level rise.
Researchers found that coastal animals, like the speckled sea louse Eurydice pulchra, have a 12.4 hour swimming cycle matching incoming tides and a 24 hour circadian rhythm in pigmented cells. This independent tidal clock is separate from the 24-hour body clock.
Researchers analyzed Europa's cracks to determine if the moon spun around a tilted axis at some point. The analysis suggests that a small tilt of about one degree occurred in the past, which could explain the orientation of the long cracks. This finding may also affect estimates of Europa's ocean age and heat generation.
Researchers study beach nourishment decisions and find that decentralized management can lead to resource inefficiencies. The stratigraphic record is controlled by physical processes such as sediment deposition rates and river channel migration, with gaps often left due to pauses in deposition or heightened erosion.
Scientists found a systematic eastward offset between observed and predicted volcano locations on Io, suggesting a faster rotation or internal structure. A global subsurface magma ocean scenario is also possible to explain the anomaly, with potential implications for life in icy moons like Europa and Enceladus.
The team used archival data from NASA's GALEX mission to study the galaxy's size and structure. They discovered a tidal dwarf candidate in the northeastern arm, which is bright in ultraviolet light and contains hot young stars less than 200 million years old.
A new plant-parasitic nematode worm, Meloidoderita salina, was discovered in a tidal salt marsh at Mont Saint Michel Bay. The female nematode worm exhibits a unique hexagonal beaded pattern on its cystoids, which is the first observation of this type in nematode worms.
New research suggests that sea levels are rising at a rate of 3.2 mm per year, 60% faster than the IPCC's central projections, based on satellite measurements and analysis of global temperatures and sea-level data over the past two decades.
Researchers analyzed seismic activity in Antarctica's David Glacier and found repeating earthquakes every 25 minutes for a year. This study sheds light on stick slip earthquakes and provides a model for understanding ice sheet flow.
A team of University of Georgia researchers has developed a technique combining LiDAR and satellite imagery to create precise coastal maps. The new website provides access to high-resolution data on beach availability, tidal ranges, and erosion for policymakers, conservationists, and tourists.
Researchers have made groundbreaking discoveries about ancient geological events. Green rust formations were found in Indonesia, while historical sulfide concentrations were reconstructed in the Black Sea using molybdenum isotopes, providing new insights into past environmental conditions.
Research papers published in AGU journals explore the impact of a Saturn moon on its magnetosphere, as well as a new way to measure Earth's magnetosphere. Scientists also discover that Loch Ness in Scotland is affected by ocean tidal loading, which controls the loch's tide.
A new study projects a bleak future for San Francisco Bay's tidal marshes under high-end sea-level rise scenarios, with up to 93% of the bay's tidal marshes potentially lost. However, the study also highlights the importance of restoration efforts and sediment management in preserving these vital ecosystems.
Researchers found that the circadian cycle, regulating day-night rhythms, drives gene expression in mussels more than previously thought. The tidal cycle's influence was less significant, with 80-90% of genes showing rhythmic expression linked to the circadian cycle.
A UC Davis study of a tiny seashore animal found that climate change may already be pushing these organisms beyond their limits, despite potential for some adaptation. The study suggests many species face environmental stress due to fragmentation and climate change, making natural selection less effective.
A global survey by Duke University researchers has identified 2,149 barrier islands worldwide, significantly increasing the known total from 1,492 previously surveyed without satellite imagery. The new islands measure 20,783 kilometers in length and are found along all continents except Antarctica.
Researchers cracked the genetic code of a harmful algal bloom species, shedding light on their ability to thrive in polluted ecosystems. The study reveals that HABs have unique genetic functions allowing them to survive in no light and metabolize toxic metals.
Researchers have discovered the secret behind sea urchin teeth's ever-sharp quality, which could be mimicked to create self-sharpening tools. The unique biomineral mosaic structure of the teeth allows them to maintain sharpness despite constant grinding and scraping.
A new study led by researchers at UC Santa Cruz reveals that the lunar farside highlands' elevated topography may be attributed to tidal forces acting early in the moon's history. The shape of the bulge can be described by a simple mathematical function, accounting for about one-fourth of the moon's shape.
Researchers propose that Enceladus' libration, a slight wobble as it rotates, could be responsible for generating heat and keeping its ocean liquid. This finding is significant in the search for life, as it suggests that the moon's environment may be stable enough to support development.
A new study by University of Nebraska-Lincoln sociologist Philip Schwadel found that Gen Xers are surprisingly loyal to their faith, in contrast to Baby Boomers who are 40-50% more likely to disaffiliate. The research suggests that this loyalty may translate into a more stable nation in terms of religiosity.
Corot-9b, a gas giant planet, has an interior similar to that of Jupiter and Saturn, allowing it to maintain liquid water. The planet's distance from its star and lack of tidal forces make this possibility plausible.
The massive planet WASP-12b is being torn apart by the gravitational forces of its host star, resulting in a 'death march' that explains its unusually large size. The research also suggests the presence of a super-Earth in the disk around the star.
Scientists discover that tidal forces may have triggered the devastating Sumatra earthquake of 2004 and that rising levels of atmospheric carbon dioxide are leading to ocean-basin-wide acidification. A new catalog of terrestrial gamma ray flashes has also been created, providing insights into these mysterious bursts of energy.
The report highlights the need to increase support for Framework Convention on Tobacco Control, raise tobacco taxes, and provide comprehensive treatment for tobacco dependence. Decreasing tobacco advertising, promoting health warnings, and regulating products are also key recommendations to reduce tobacco use.
Researchers discover CoRoT-7b, an earth-like planet, is believed to be the rocky remains of a Saturn-sized gas giant. Computer models reveal that the planet's mass loss and tidal migration led to its transformation.
Researchers found that tides strongly modulate tremors on the San Andreas Fault, suggesting high fluid pressure lubricates the rock. This lubrication allows for slip with little effort, increasing stress on shallower fracture zones.
A new tool called Vanish can make online personal data expire, becoming irretrievable from all Web sites and home computers. The system uses decentralized file-sharing networks to create a secret key and then encrypts the message with that key.
University of Adelaide researchers developed a model predicting mosquito population peaks, aiding in disease outbreak prevention by allowing for targeted mosquito control. The study analyzed 15 years of data on Aedes vigilax populations, linking environmental factors to peak timing and magnitude.
Researchers found that the DE3 tide can propagate above 100km and exhibits a 2-year cycle oscillation. The tidal signal was analyzed using TIMED mission data, revealing two dominant Hough modes with annual unimodal distribution.
A new study suggests that ventilator-induced lung injury still occurs even with lower breath volumes, highlighting the need for more accurate assessments of lung stress and strain. The researchers recommend routine assessment of esophageal pressure and lung volumes to improve patient outcomes.
A new storm surge modeling system developed by Stony Brook University researchers will better predict flood levels and timing in NYC, crucial for emergency management. Sea level rise increases NYC's vulnerability to flooding, making it essential to improve forecasting.
A new study by University of Minnesota professor Paul Vaaler reveals that foreign investors respond to shifting partisan political tides during election years in emerging-market countries. When the likely swing is to the right-wing, foreign investment projects increase, while left-wing swings lead to a decrease in new investments.
Researchers found a 30% increase in tremor activity with rising tides, contradicting assumptions that water would clamp down on the movement. The tremors are likely caused by tidal stresses from gravitational influences of sun and moon.
Patients with acute lung injury treated at ICUs requiring board-certified critical care physicians have a one-third lower mortality rate compared to those at open ICUs. This study, which analyzed data from nearly 1,100 patients, suggests that intensivist staffing improves patient outcomes.
Scientists analyze data from the Mediterranean Sea, Atlantic Ocean, and Moon's surface to predict tropical cyclone development, assess ocean temperature and salinity changes, develop new tsunami forecasting methods, and understand lunar surface composition. These findings shed light on the impacts of climate change on extreme weather e...
Researchers have identified a silent, natural disaster that silently wipes out coral reefs on clear sunny days during extreme low tides. The study reveals that these events are highly predictable and can be anticipated through alignment of weather patterns and tidal charts.
A new study suggests that frictional heating is the most likely explanation for the plumes and features observed on Enceladus. The process occurs when tidal forces cause fault lines in the moon's icy shell to rub back and forth, producing enough heat to transform ice into water vapor and ice crystals.
Researchers found that tidal forces caused by Saturn's gravity can control the timing of eruptions from cracks in Enceladus' southern hemisphere. The study suggests that these cracks, known as Tiger Stripes, are warmer than their surroundings and may be the source of eruptions.
A new Duke University study suggests that healthy coastal wetlands can adjust to rising sea levels by maintaining their vegetation and sediment supplies. This adaptation enables the marshes to function as effective buffers against coastal storms, while also providing habitat for commercially important fin and shellfish.
According to ASU researcher Ronald Greeley, Europa is the most promising candidate among four worlds beyond Earth that might contain life. The moon has a thick layer of water and organic minerals, making it an ideal target for NASA's next mission. Scientists hope to measure the ice shell's thickness using tidal flexing measurements.
Research reveals tidal motion affects West Antarctic Ice Sheet's largest ice stream, the Rutford Ice Stream, causing it to vary its speed by up to 20% every two weeks. This phenomenon, related to ocean tides and gravitational effects of the sun and moon, has important implications for predicting sea level rise.
Species unique to tidal marshes are vulnerable to habitat loss due to coastal development and sea level rise. Toxic wastes and invasive species also pose a significant threat to these endemic species. The American Institute of Biological Sciences argues for an expanded research program to better understand the impacts of these threats.
Researchers discovered that a balance of low tidal volume and periodic deep inflation, or 'sighs,' is necessary to maintain open lungs while preventing ventilation-induced lung injury. The study found that overdoing 'sighs' can lead to further injury, highlighting the importance of finding an optimal frequency range for deep inflation.
Research suggests that seismic shaking can temporarily increase groundwater permeability, which could be exploited to enhance oil extraction. This phenomenon is caused by the gravitational effects of the moon on the solid Earth, forcing water in and out of wells.
A recent study by researchers at the National Marine Fisheries Service has found significant amounts of Exxon Valdez oil buried in sand and silt in tidal feeding grounds of sea otters, ducks, and other wildlife. This discovery highlights the potential long-term impact of oil spills on marine ecosystems.
Scientists discovered massive sand dunes on Saturn's moon Titan, formed by tidal winds and unique atmospheric conditions. The dunes, similar to those in Namibian Deserts, suggest that Titan's atmosphere can create surface winds powerful enough to sculpt sand.
Scientists have created a detailed map of tides under Antarctic ice using the Gravity Recovery and Climate Experiment (GRACE) satellites. The tides play a major role in measuring how much ice is melting or freezing, affecting global sea levels.
Hurricane Isabel caused widespread devastation to the Chesapeake Bay in 2003, with storm surges and floodwaters destroying homes and infrastructure. However, the event also had a positive impact on the Bay's ecosystem, with increased recruitment of juvenile Atlantic croaker.
Cornell researchers study NGC 5291 system to understand tidal dwarf galaxies' properties. They find strong organic compound emission and warm molecular hydrogen in tidal dwarfs.
Researchers study two entire sea anemone colonies clashing, discovering organized armies of warriors, scouts, and reproductives. Complex behaviors emerge at the group level despite simple organism members.
Female California fiddler crabs check out 100 or more male crab candidates and burrows before choosing a mate due to the importance of burrow size for offspring survival. This picky behavior helps females select mates with suitable burrows that allow larvae to hatch at the safest time.
Researchers found that levels of enterococci bacteria were higher at beaches during full and new moon phases, increasing the risk of illness. The study suggests using tidal patterns as a tool for assessing water quality and identifying potential sources of pollution.
A new computer model reveals that ancient Palaeozoic seas were almost tideless, preventing oxygen circulation and creating an environment inhospitable to life. This finding has significant implications for understanding the evolution of early marine life and ancient climates.
Researchers Drs. Melanie Vile and David Velinsky are studying the effects of sea level rise and saltwater intrusion on tidal marsh ecosystem services in the Delaware Estuary. Tidal marshes provide crucial functions such as storm buffering, shoreline stabilization, and fish nursery habitats.
A new study suggests that ocean tides contributed to the enigmatic Heinrich events by breaking gigantic icebergs from the ice sheet covering northern Canada. The research used a state-of-the-art computer model to capture ancient tidal variances with high accuracy, revealing that tides were highest in the Labrador Sea during these events.