Sentences with phrase «volcanic ash»

Researchers also use the application to display the movement of volcanic ash clouds, which can pose a serious threat to airplanes.

This concept is also imperative when considering insurance for a recent terrorist attack, a hurricane threatening your destination or volcanic ash clouds that could delay your flight.

Another photo: a tour of an ancient Greek island city preserved in volcanic ash.

Apparently, the soils are mixed with volcanic ash, which makes everything grown there have extra vitality.

He added that the airport authority had not detected volcanic ash at the airport based on the paper test, but said areas near the airport were still affected.

In the world of travel insurance, there is a difference between volcanic eruptions and volcanic ash events.

The eruption caused volcanic ash to fall on nearby villages, forcing residents to flee to the southern part of the island.

The fossils were perfectly preserved under a layer of volcanic ash.

Flights across the southern hemisphere were significantly disrupted as the cloud of volcanic ash from a erupting volcano in southern Chile drifted across Argentina and Australia.

Air traffic over northern Germany is returning to normal after being disrupted by volcanic ash from Iceland.

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.

Redmond Bentonite Clay is the result of volcanic ash deposited in seawater 150 million years ago.

A future challenge for researchers, Jackson says, will be to «find ways to activate aggregates, as slag or as volcanic ash for example, in innovative concretes so that these can develop strätlingite reinforcements in interfacial zones like the Roman architectural mortars.»

Thousands of years ago when volcanoes erupted, tons of volcanic ash found its way into the vast oceans.

These so - called Lagrangian coherent structures have been observed shaping other natural phenomena, including volcanic ash clouds and plankton blooms.

The Laetoli prints, two million years earlier, were made in volcanic ash on which light rainfall fell thereafter, hardening the ash into a concrete like material.

By Dave DeWitt On an August evening in A.D. 595, the Loma Caldera in what is now El Salvador erupted, sending clouds of volcanic ash into the Mayan agricultural village of Cerén, burying it twenty feet deep and turning it into the New World equivalent of Pompeii.

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.

First of all, it's everything, but it's also a mineral - rich substance created from volcanic ash used for centuries to promote health and prevent disease because of its natural and unique ability to produce an electrical charge when it's hydrated.

Bentonite clay comes from aged volcanic ash sediment, and is used to attract, trap and remove toxins from the body.

In recent years, several high - profile volcanic eruptions have caused flight disruptions, travel delays, and travel restrictions due to the risk of volcanic ash particles coming in contact with aircraft engines.

Many airlines enforce stricter rules than the ICAO on flying through volcanic ash.

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.

When volcanic ash clouds darkened a large swath of Northern Europe in April and resulted in an unprecedented number of flight delays and cancellations, many travelers who had once pooh - poohed travel insurance decided to take a second look.

They actually call that particular one the «Northern Lights» cave because in one area it kind of looks like blue aurora surrounded by black volcanic ash.

An infrared system that detects and informs about volcanic ash in the atmosphere has been tested on an Airbus A340.

For example, while contrails — and their warming potential — disappeared from European skies last April when an Icelandic volcanic ash cloud grounded flights, atmospheric CO2 continued to warm the world.

The airport was closed for 24 hours from Monday morning, disrupting 445 flights and some 59,000 passengers, after Mount Agung, which killed hundreds of people in 1963, sent volcanic ash high into the sky, and officials said cancellations could be extended.

The Yellowstone Caldera, the most dangerous hot - spot on the surface of the earth, erupts with a series of 11.2 earthquakes and spews volcanic ash high into the atmosphere.

Archaeological excavations of the ancient city of Pompeii in Italy unearthed perfume - making equipment that had been preserved under volcanic ash after the eruption of Mount Vesuvius in A.D. 79, an eruption which devastated the area.

National Air Traffic Services (NATS) says volcanic ash emitting from the volcano under the Eyjafjallajokull glacier in Iceland has caused a significant number of flight cancellations and travel delays across Europe.

The eruptions have caused volcanic ash rain in nearby villages, forcing residents to flee to the southern part of Bali.

Volcanic ash consists of pieces of rock, glass and other minerals.

Ground - based remote sensing through ultraviolet and infrared spectroscopy is used to measure the composition of a volcanic plume, the column of hot volcanic ash, gas, and rock emitted when the volcano erupts.

Scientists exposed 14 hominid footprints, made by two individuals as they walked across wet 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.

But although it is certain that volcanic ash like that hanging over northern Europe can melt inside a jet engine and block airflow, nobody has the least idea about just how much is too much.

Now a UNESCO World Heritage Site, Pompeii's archeological site is fascinating to explore with well - preserved fossils and ruins that lay beneath volcanic ash for centuries.See its sights with your guide, noting where the restaurants, shops and brothels of ancient Pompeii once stood.

Next, they sieved volcanic ash collected from farmland near Eyjafjallajökull and kept those particles that were 57 micrometres in diameter or less.

Transportation Ministry Air Transportation Director General Agus Santoso said volcanic ash posed a danger for aircraft.

Based on her reading of the report, the investigators appeared not to believe the testimony of her former colleague Adam Lewis, a glacial geologist who worked at North Dakota State University in Fargo until he emigrated to Canada, who wrote that he witnessed Marchant blowing volcanic ash in Willenbring's eyes during one of the expeditions.

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

Nutrient - rich volcanic ash may have fed similar dead zones that produced shale oil and gas fields from Texas to Montana.

The last major eruption occurred in 1986, with little burps of volcanic ash also occurring every so often.

is actually volcanic ash and has been used throughout history for healing because it produces an electric charge that, when heated, has the ability to absorb toxins like a sponge.

With the pervasiveness of smoke, volcanic ash gets everywhere, and is comprised of tiny jagged pieces of glass (pulverized lava), laced with sulphur and cyanide.