Sentences with phrase «volcanic ash at»

While there is little sign of volcanic ash in the southern regions of Bali, evidence of volcanic ash at higher altitudes on aviation approach and departure paths has prompted the decision to close the airport.

«While the sun is shining and there is little sign of volcanic ash in the southern regions of Bali, evidence of volcanic ash at higher altitudes on aviation approach and departure paths has prompted the decision to close the airport,» Bali Tourism Board Chairman Ida Bagus Agung Partha Adnyana said in a statement.

Now, subtle traces of volcanic ash at Pinnacle Point, a famous archaeological site on the southern coast of South Africa, suggest that at least some groups of early humans survived, and even thrived, in the eruption's aftermath.

The 3.5 - million - year - old hominids appeared as models in an exhibit that had just opened at the American Museum of Natural History in New York City; the replicas were based, in part, on fossilized footprints preserved in volcanic ash at Laetoli, Tanzania, which showed unequivocally that these creatures had walked upright.

From the current proportions of the two, the researchers dated the volcanic ash at up to 8.1 million years old.

BIG MARKS Footprints of the largest known Australopithecus afarensis, dating to nearly 3.7 million years ago, have been found in hardened volcanic ash at Tanzania's Laetoli site.

Not exact matches

From our Vineyard perched on top of Howell Mountain at at elevation of 2,100 feet, this Cabernet reflects the power and intensity characteristic of a terroir of decomposed volcanic ash and red clay.

The eruption at the Puyehue - Cordón Caulle Volcanic Complex, a chain of volcanoes in Chile, spewed ash clouds up to 45,000 feet into the air in early June.

In the United Kingdom, volcanologists work at the Exeter - based Met (formerly meteorological) Office, modeling the drift of volcanic ash clouds in the atmosphere.

Butler described the new radar - absorbing feature and his volcanic ash theory earlier this week at the annual Lunar and Planetary Science Conference in Houston, Texas.

Working at ALS beamline 12.3.2, a superconducting bending magnet X-ray micro-diffraction beamline, the research team studied a reproduction of Roman volcanic ash - lime mortar that had been previously subjected to fracture testing experiments at Cornell University.

The volume of ash deposited, and the estimated height of the eruption plume (43 kilometers above sea level) put the eruption's magnitude at a minimum of 7 on the volcanic explosivity index (which has a scale of 1 to 8)-- making it one of the largest known in the Holocene.

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.

A team of researchers at Uppsala University, together with international colleagues, have now found intriguing clues hidden inside millimeter - sized crystals from the volcanic ash and rock.

Using a pipette full of water, fresh volcanic ash and mathematical modelling, Sanjoy Som at the University of Washington in Seattle worked out how the size of imprints related to the speed at which the rain fell through the ancient atmosphere.

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.

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.

Volcanic activity at Mt. Songak was limited hydro volcanic activity out of which a great deal of volcanic ash was released while it is evident that Sangchang - ri was a dynamic active volcano out of which lava was spewed and then flowed down in all directions along the inlanVolcanic activity at Mt. Songak was limited hydro volcanic activity out of which a great deal of volcanic ash was released while it is evident that Sangchang - ri was a dynamic active volcano out of which lava was spewed and then flowed down in all directions along the inlanvolcanic activity out of which a great deal of volcanic ash was released while it is evident that Sangchang - ri was a dynamic active volcano out of which lava was spewed and then flowed down in all directions along the inlanvolcanic ash was released while it is evident that Sangchang - ri was a dynamic active volcano out of which lava was spewed and then flowed down in all directions along the inland slope.

Area of Low Contamination: An airspace of defined dimensions where volcanic ash may be encountered at concentrations equal to or less than 2x10 - 3 g / m3, but greater than 2x10 - 4 g / m3.

Area of Medium Contamination: An airspace of defined dimensions where volcanic ash may be encountered at concentrations greater than 2x10 - 3 g / m3, but less than 4x10 - 3 g / m3.

Area of High Contamination: An airspace of defined dimensions where volcanic ash may be encountered at concentrations equal to or greater than 4x10 - 3 g / m3, or areas of contaminated airspace where no ash concentration guidance is available.

Using the Saharan Air Layer as a proxy for volcanic ash, the test aircraft will now fly over the Atlantic Ocean west of Morocco to prove the equipment can detect the fine particles of sand at altitudes of up to 20,000 feet and a distance of around 100 km.

«When we had the volcanic ash identified, we were stunned, because that would make this stone tool one of the oldest artifacts in North America,» Patrick O'Grady, with the University of Oregon Archaeological Field School, who led the excavations at the Rimrock Draw Rockshelter, where the tool was found, said in a statement.

The biggest threat on the boy's journey (that ends at the top of a volcanic ash spewing mountain straight out of Lord of the Rings) is a man - hunting monster like the ones his father fights.

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.

The main draw at this 226 - room budget hotel is its exceptional views of both the ocean and Diamond Head (a massive volcanic ash ring that was long ago... Read More

«According to pilot reports, volcanic ash was found at an altitude of 2,000 to 4,000 feet,» Arie said.

According to the VAAC report, volcanic ash was detected up to an altitude of 25,000 feet and is spreading in a south - westerly direction, and therefore toward the airport, at a speed of 14 knots.

Volcanic ash has fallen onto a number of villages surrounding Mount Agung in Bali following an eruption at the island's tallest volcano on Tuesday afternoon, less than a month after the alert level was lowered.

At Una Una, the volcanic island has made an amazing seabed of lava ash sand which is something to behold!

Walking up the volcano in Tanna (2 steps forward and 1 step back in the black volcanic ash) only to have rocks the size of our jeep spewed out at us — also I thought was normal.

One of Italy's most famous destinations, Pompeii was an ancient Roman city destroyed at the hands of Mount Vesuvius in AD 79 and buried and preserved under 4 to 6 metres of volcanic ashes.

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.

One «theory» for the strength of the Permian - Triasac extinction is that the volcanics (roughly a million cubic kilometers worth) erupted through thich layers of coal, and therefore liberated at huge amount of CO2 as well as the usual volcanic gases and ash.

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

The crystals are derived from volcanic ash deposits erupted explosively at Axial Seamount, Juan de Fuca Ridge, in the northeast Pacific Ocean.

Turner's work, in particular, which often depicts brightly colored sunsets and emphasized natural light, can be used to roughly estimate aerosol optical depth — that is, the amount of particles like dust, volcanic ash, smoke and sea salts in the atmosphere — at the time the painting was made.

If volcanic activity continues to increase, and there is an eruption big enough to send millions of tons of ash and dust into the upper layers of the atmosphere, then the Earth's temperature would likely drop at least a degree or two from present levels.