Sentences with phrase «by volcanic ash»

Skies polluted by volcanic ash scatter sunlight more, making sunsets show more red; similar results are seen with dust or man - made aerosols.

I say usually, since there are cases such as the trees flattened by the Tunguska impact, or buried by volcanic ash, that quite obviously recorded direct effects these event.

We walked the 3.8 mile Blue Basin Loop to take in some of the best views of the blue - green clay stone originally formed by volcanic ash.

Regarded as the best - preserved Roman city in the world having spent the best part of two millennia buried by volcanic ash.

Today visit Akrotiri, which was buried by volcanic ash sometime between 1625 and 1450 BCE.

A steady stream of advice from local authorities, seemingly focusing on ways to make life difficult for teachers who have been stranded as a result of the disruption of travel arrangements by the volcanic ash cloud, continues to emerge.

Not exact matches

Tomorrow would have marked the first of 20 days of strike action, further reducing BA's chances of survival as it is beset by industrial action and the impact of the volcanic ash cloud.

Scientists, meteorological institutes, and aviation authorities had long recognized the hazards posed by Iceland's volcanoes; the London Volcanic Ash Advisory Centre (London VAAC) had been simulating the spread of ash from a hypothetical eruption of Eyjafjallajökull's neighboring Katla volcano for several years.

The scientists dated the hominin remains by correlating the rock strata where they were discovered with well - known radiometrically dated tuffs (volcanic ash).

The features are both covered by several metres of volcanic ash or pumice, which he says would absorb radar.

The glacier ice found by the team, which came from a layer that began just 50 centimetres below the surface, was dated by analysing the relative abundances of isotopes of argon in a thin layer of overlying volcanic ash.

Another possibility, says Dick van der Wateren of the Free University, Amsterdam, is that the layer of volcanic ash dated by Sugden's team slid over younger ice.

Geologists measure eruptions by the Volcanic Explosivity Index, which uses whole numbers from 0 to 8 to rate the relative amount of ash, dust, and sulphur a volcano throws into the atmosphere.

Roman architectural mortar, by contrast, is a mixture of about 85 - percent (by volume) volcanic ash, fresh water, and lime, which is calcined at much lower temperature than Portland cement.

Lead author Dr Steve Roberts from BAS says: «When we first examined the sediment cores we were struck by the intense smell of the guano in some layers and we could also clearly see the volcanic ash layers from nearby Deception Island.

LONDON (Reuters)- The world's first man - made ash cloud has been created by a team led by airline easyJet and planemaker Airbus to test how passenger aircraft cope with volcanic blasts such as the 2010 Icelandic eruption.

The hobbits were likely buried in the cave they lived in by a volcanic eruption, entombed beneath volcanic ash.

The research was inspired by a NSF - funded study to understand the properties of volcanic ash collected from the 1980 eruption of the Mount Saint Helens volcano in the state of Washington.

Willenbring, now an associate professor at the Scripps Institution of Oceanography in San Diego, California, had alleged, in a lengthy complaint filed with BU in October 2016, and reported on by Science last month, that Marchant also physically harassed her, throwing stones at her while she was urinating, blowing volcanic ash in her eyes, and pushing her down a steep, rocky slope several times.

Satellites can detect volcanic ash by observing the scattering of ultraviolet light from the sun.

A covering of volcanic ash reduces the temperature «seen» by the scanner still further.

Preserved in volcanic ash more than 3.5 million years ago, the 27 - metre trail with two parallel sets of footprints — one single trail and another thought to have been made by two individuals, possibly an adult and a child — was first excavated in 1977.

At the conference this week, he intends to suggest that bands seen by Venus Express in the lowest layer of cloud, about 45 km above the surface, could be volcanic ash, a striking signature that future balloon missions could confirm.

Records of ancient sex — like the fossil that resulted when this couple was killed and covered by fine, poisonous, volcanic ash (above right)-- are unusual: There are only 33 other instances of preserved mating insects, most trapped in amber.

I won't argue that our added gases may contribute to the warming to some very, very small degree, but keep in mind, the ash plume from a good volcanic eruption such as the last big Pinatubo eruption eclipses into insignificants the amount of pollutants added to the atmosphere by human activity.

Homo sapiens, by contrast, lived on the fringes beyond the range of the volcanic ash clouds.

Others asserted the prints were indistinct and did not establish the characteristics of a fully extended stride, a deep heel strike and a nearly as deep (as when impressed on wet sand or moistened volcanic ash) «toe off», the impression left by the ball of the foot and toes when one, while walking, pushes off and shifts weight to the other leg.

That left the El Chichon and Pinatubo volcanic eruptions in 1982 and 1991 as the remaining major natural perturbations to the climate trend, although that had as much to do with the timing of the eruptions as it did with the cooling caused by the nearly global distribution of volcanic ash in the upper atmosphere.

Bentonite clay is a natural substance derived from volcanic ash that can not be absorbed by the body.

Bentonite clay (a sedimentary clay made from volcanic ash) has been used by many civilizations and cultures over the years due to its believed healing and calming properties and is particularly useful for cleansing the body's colon.

By this definition, pure Bentonite Clay, formed from inert volcanic ash and trace minerals, is inorganic.

Powered by exfoliating volcanic ash, purifying kaolin and pore - reducing charcoal powder, this pore - perfecting sheet mask eliminates impurities while helping to lift and strengthen skin.

Sign up here and start meeting Atlanta singles today!The trouble with living in such a big city is that finding that one - in - a-million person who's just right for you can seem tricky.Only in the 70s the radiocarbon dating method determined the age of a throne found buried under the ash: the eruption should have happened in the 1456 BC.Infact this date matches with a hypothesis made by the greek geologist Angelo Galanopulos who analized some episodes of the Bible (The Three Days of Darkness, The Earthquakes, The Parting of the Red Sea) and came to the conclusion that around the 1456 BC a big volcanic eruption interested the Eastern Mediterranean.

Another interesting feature of the Froyo is its new speech recognition system that makes it possible for the device to comprehend complex phrases like» pictures of the volcanic activity in Iceland spewing ash throughout Europe» or «pictures of the Golden Gate Bridge at sunset» followed by instant search against these terms.

A lingering volcanic ash cloud has forced the cancellation of several flights from Bali, keeping thousands of Australians stranded, and all flights to the island from Australia have been cancelled by Virgin, Qantas and Jetstar.

An estimated 59,000 travelers have been stranded in Bali by the eruption of Mount Agung, as a cloud of volcanic ash has interrupted flights.Despite... Read More

The normally bustling airport was a ghost town on Monday night, speckled with confused tourists left stranded by the cancellation of flights because of volcanic ash.

An estimated 59,000 travelers have been stranded in Bali by the eruption of Mount Agung, as a cloud of volcanic ash has interrupted flights.

State - owned airport operator PT Angkasa Pura I (AP I) has extended the closure of I Gusti Ngurah Rai International Airport by another day, until 7 a.m. on Thursday, as volcanic ash from Mount Agung is still found in airspace near the airport.

The volcanic ash cloud spewed by Mount Agung on the resort island of Bali on Tuesday afternoon has not yet disrupted the operation of Ngurah Rai International Airport.

This new Tongan island is the first of its type to be formed from the ash of a 2014 volcanic eruption in the south Pacific and could exist for decades, according to a study released by Nasa

We visit the prehistoric Akrotiri — a Bronze Age settlement destroyed by a huge eruption in the 17th century BC, buried under the volcanic ash, preserving the whole city.

Off - site galleries offered strong artist - is - present showings: at Central Fine on Normandy Drive, airbrushed paintings by Hubert Bush; at Emerson Dorsch, Back On Earth, hatched by Miami locals, Hugo Montoya and Brandon Opalka; at Locust Projects Daniel Arsham's fierce intervention into the gallery floor, 25 feet wide and up to 3 feet deep, filled with artefacts from the recent past (a bashed - up guitar, a push - button telephone, radios, blown tyres — painstakingly recreated in concentric circles of volcanic ash, crystal and steel, and all sourced from eBay.

I won't argue that our added gases may contribute to the warming to some very, very small degree, but keep in mind, the ash plume from a good volcanic eruption such as the last big Pinatubo eruption eclipses into insignificants the amount of pollutants added to the atmosphere by human activity.

I've sometimes thought that global cataclysms like the largest volcanic eruptions would disrupt the glacial records by many years, like Oruanui eruption c. 26500bp, as these would induce unrecorded behavior in weather and other things, f.e. the huge ash deposits might decrease the albedo so much a local melting event happens.

Soil erosion was exacerbated by sheep overgrazing on plants that were already struggling, plus the additional stress from blankets of volcanic ash — all ending in Iceland's surreal (and hard to farm) topography.

Needless, to say, land - based surface temperatures are impacted by other factors, such as upward trends in UHI, ash clouds from volcanic and war activity, persistent contrails and, perhaps, recent geo - engineering efforts.

Large particle volcanic ash settles out very rapidly, and it is the very small particles seeded by sulfuric acid (from SO2) that are more important in causing durable and widespread cooling.

Previous pauses in temperature rise in 1982 and 1991 were attributed to the ash and sulfur aerosols spewed into the atmosphere by the volcanic eruptions of El Chichón in Mexico and Pinatubo in the Philippines, respectively.

The scientists nailed down the Arizona rocks» ages by analyzing interspersed volcanic ash layers containing radioisotopes that decay at a predictable rate.