Articles tagged with Sedimentation
Research by University of Warsaw scientists reveals the impact of marine snow on the ocean's carbon cycle and global warming. The study models the collision frequency of these 'snowflakes' to determine their sinking rate, which transports vast amounts of carbon from the surface to the depths.
Researchers at OIST and University of Turin developed a general formulation for mixing heavy particles with fluid, enabling study of fundamental physics phenomena and applied research in fluid engineering. Simulations reveal the formation of sediment plumes and the role of friction in particle interactions.
Researchers found a surprising correlation between West Antarctic Ice Sheet retreat and marine algae growth over the past 500,000 years. The study suggests that global warming may lead to reduced CO2 uptake if the ice sheet continues to shrink.
New research reveals that life rebounded astonishingly quickly after the asteroid impact, with new species of plankton emerging in fewer than 2,000 years. The study uses an isotope marker to determine the age of sediments and finds that complex life reestablished within a geologic heartbeat.
Researchers found microplastics in Texas bay sediments, but most have been swept out to sea, not settling at the bottom. The study suggests microplastics can absorb chemicals and build up in marine life, eventually affecting humans.
Climate change drives large increases in electricity demand and costs in Texas due to extreme temperatures. Meanwhile, atmospheric rivers become more frequent, larger, and moister globally. Diagnostic studies also predict malaria outbreaks with five-month lead time using sea-surface temperature anomalies.
Scientists from the University of Twente and INRAE discovered that releasing small particles of salt into a tank of water creates a circular pattern due to gravity-induced wake drag. The experiment reveals that the optimal amount of water and particle size affect the shape and size of the salt ring.
A groundbreaking study led by Virginia Tech provides the first direct geochemical evidence of a massive, rapid melting period on Earth after the last global ice age. The researchers analyzed lithium isotopes in carbonate rocks formed during this time and found strong evidence for freshwater meltwater interacting with the ocean.
The UT Austin expedition aims to investigate how sediments control glacial melt and the future of the Greenland ice sheet. A robotic submersible will gather measurements of the glaciers' underwater walls and sediment-laden meltwater, while surveys and sediment cores will reveal past climate change impacts.
Researchers developed a novel method to visualize sedimentation in soft-ground drilling, enabling accurate predictions of settling times. The Moving Particle Semi-Implicit (MPS) method models the drilling slurry and sand particles, reproducing three-dimensionally the settling process with high accuracy.
Researchers from Kobe University found that a 7,300-year-old volcanic eruption was the largest of the Holocene era. The team analyzed seismic imaging and sediment samples to determine the event's magnitude and impact on the climate.
Researchers found that Singapore's coasts were resilient during high sea-level rise rates due to high sedimentation rates. This study provides new insights into the interplay between rising sea levels and sedimentation.
Researchers from University of Warsaw and Utrecht University observed the Brazil nut effect in a mixture of charged colloidal particles without external energy. The phenomenon involves heavier particles rising to the top due to repulsion forces, with potential applications in geology, soft matter physics, and industry.
Researchers found that coral symbiont community structure responds to environmental conditions in Kaneohe Bay, which can help predict how corals will respond to future heat stress. Corals in areas with less light and temperature variability hosted less of the stress resilient symbiont.
Researchers warn that climate change will increase uncertainty in international law governing maritime zones, affecting small island states. Technologies like GPS and satellite bathmetry may help solidify claims, but more data is needed to accurately delineate existing boundaries.
Researchers at UT Austin discovered a rule connecting channel belts to river patterns, finding that channels in ancient rivers lead to narrower belts. Multichannel rivers take up more space on the belt and are closer to the floodplain, influencing landscape shaping.
A study by University of Texas at Austin researchers found that narrow but deep channels across the coastal plain landscape play a significant role in moving water, particularly during floods. The channel networks covered over 12,000 square miles and were separated into distinct drainage basins.
A University of Queensland-led study found that nearly 85% of coastal areas leach sediment to coral reefs, a major threat. Reforestation can help by reducing sediment transport, increasing light levels for coral growth and reproduction. Land restoration is crucial for building coral resilience.
Scientists study the Central Anatolian Plateau and Southern Rocky Mountain Volcanic Field, while examining fluvial siliciclastic rocks from the San Juan Basin. In another study, researchers investigate the evolution of the Portland and Tualatin forearc basins in Oregon, highlighting their relation to the Cascadia convergent margin. Add...
Researchers studied ash from volcanic eruptions, discovering premature sedimentation and the rafting effect. These findings will refine forecasting models used by VAACs to predict volcanic ash clouds' impact on aircraft routes.
Microplastics have been found in nearly all organisms and habitats worldwide, but the factors contributing to their influx and accumulation in water ecosystems are not yet fully understood. A new study developed a sediment trap method to analyze annual accumulation rates and possible seasonal variation, finding that microplastic flux r...
Researchers from Arizona State University used satellite and field studies to identify key factors affecting coral outplant survival. They found that low POC levels, stable PAR, minimal temperature anomalies, and increased water depth are crucial for maximizing restoration success.
Researchers analyzed sediment cores to find natural sea-ice extent variation since last ice age, contrasting with recent decline. Perennial ice in western and central areas persisted even during warm periods, while southeastern part experienced seasonal ice-free conditions.
Researchers analyzed volcanic tuff in European Russia's continental formation, determining the precise age of upper layers at 253.95 million years. This discovery allows for direct comparison of fauna associations and thaw lengths in European Russia during late Permian.
Researchers at Tel Aviv University discovered basin-wide erosion rates incompatible with known tectonic and climatic regimes of the period. The findings indicate that human impact on the environment began significantly affecting the Earth's geology around 11,500 years ago.
A Tel Aviv University study reveals that asymmetric objects settle uniformly in liquid, contrary to symmetrical objects. This finding may improve fluidized beds used in polymer production and water treatment facilities.
A recent study found that shallow coral reefs in Singapore can recover rapidly from bleaching events, despite high levels of sedimentation. The team's research suggests that diverse shallow coral communities can persist in adverse conditions, highlighting the resilience of corals to environmental stresses.
A study published in Nature Geoscience suggests that intermediate vegetation growth is key to stabilizing river deltas. This 'just right' amount of vegetation slows water flow and promotes sediment deposition, helping prevent sea-level rise from damaging sensitive marshlands.
Researchers used the MPG/ESO 2.2-metre telescope and Hubble Space Telescope to study 21 globular clusters, finding that a few were young with blue stragglers distributed throughout, while others were old with the stars clumped in the centre. This reveals big differences in the speed of evolution from cluster to cluster.
A recent study by Washington University in St. Louis scientist Younan Xia found that nanoparticles above certain sizes and weights settle, altering the concentration near cell surfaces and resulting in higher cellular uptake rates. This discovery may invalidate prior experiments on nanoparticle toxicity and dosimetry.
A Baylor University study reveals Native Americans significantly altered the eastern North American landscape and floodplain development hundreds of years prior to European settlement. The research found that prehistoric indigenous land use caused widespread ecological change and increased sedimentation in hydrologic systems during the...
Research found that spore-like acantharian cysts rapidly sink from surface waters to the deep ocean, delivering significant amounts of organic matter to the ocean depths. This phenomenon may be part of an extraordinary reproductive strategy allowing juveniles to exploit a seasonal food bonanza.
Researchers measured carbon particles from plankton blooms in the Southern Ocean, finding most don't reach the deep ocean. Plankton blooms stimulate carbon capture, but carbon tied up in plankton doesn't sink far or fast.
The Geosphere journal features two studies: one on climate change in the southwestern US from 17-6 million years ago, and another on the evolution of the South Balkan extensional system. The climate study used sedimentation and erosion history to interpret changes in ocean circulation and North American monsoon activity.
Elsevier has partnered with IRTCES and WASER to enhance the International Journal of Sediment Research's global presence through ScienceDirect, providing a platform for sedimentation engineering and water management research. The journal will offer certification and wider dissemination to a global audience.
A new study reveals the San Jacinto fault is no older than 1.1-1.3 million years, with its slip rate likely faster than previously thought. The fault's long-term motion may be as high as 20 millimeters per year, making it a significant contributor to seismic hazards in southern California.
Researchers are developing an in vitro model to evaluate the ability of several inhibitors to block protein aggregation by TGases. Several compounds show positive effects, including creatine and cystamine hydrochloride.