Sentences with phrase «in volcanic ash»

«The meeting with stakeholders and data from Darwin Volcanic Ash Advisory Centre (DVAAC) resulted in the decision to close Lombok International Airport because the air is still covered in volcanic ash.

Transportation Ministry's air transportation director general Agus Santoso said the closure was due to the eruption of Mount Agung in Bali that resulted in volcanic ash that traveled to the east - southeast and headed to Lombok International Airport.

Minerals, such as the silica in volcanic ash, seep into the tree and fill in tiny pores in wood's cells.

They work on determining the age of minerals in volcanic ash, which establishes a precise and detailed chronology of the earth's climate evolution.

Toiling in volcanic ash, the group collected fossilized remains of more than 6,000 creatures ranging from antelopes to bats, as well as seeds and geologic samples.

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.

«Role of gravitational instabilities in volcanic ash deposition: The example of Eyjafjallajökull.»

Marinatos's theory was bolstered in 1967 when he dug up the ruins of Akrotiri, a prosperous Minoan town on Thera that had been buried in volcanic ash.

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.

The sensor identified silicate particles in volcanic ash released over France's Bay of Biscay from 60 kilometers awa

They were made on a sandy seashore, possibly a small river delta, whereas the Laetoli tracks were made in volcanic ash.

Puebla Then in 2003, 40,000 - year - old human footprints found in volcanic ash near Puebla in Mexico suggested that the New World was colonised far earlier than anyone thought.

erupted spectacularly 25 years ago this week (May 18, to be exact), blanketing the vicinity in volcanic ash.

They work on determining the age of minerals in volcanic ash, which establishes a precise and detailed chronology of Earth's climate evolution.

They found carbon layers on the bones with a structure and composition that suggests they are charred soft tissue — and the limbs of skeletons are flexed as if they had been trapped in volcanic ash (Nature Communications, DOI: 10.1038 / ncomms4151).

Age estimates relied on measures of the decay of radioactive forms of argon and uranium in volcanic ash layers framing tool - bearing sediment.

Flashes of lightning in volcanic ash clouds may have helped set the stage for life on Earth.

To get the sweeter, less - acidic San Marzanos that are grown in the volcanic ash - rich soil below Mount Vesuvius, you must look for the Denominazione d'Origine Protetta («Protected Designation of Origin») stamp, otherwise known as DOP.

Not exact matches

Imagine: Somewhere in the vast Pacific Ocean is eight square miles of volcanic ash where nearly 29,000 lives ended in just 36 days.

«If these employers persist with their attempts to penalise teachers then clearly there will be on - going repercussions in schools long after the volcanic ash has settled and normal travel arrangements have been restored.»

The entire cliff would have been deposited very quickly from a fast - moving current of hot gas and ash (a pyroclastic density current), and the extreme temperatures (900-1000 °C) caused the ash to weld to the ground and effectively enameled the area in dense volcanic glass.

A little bee, Anthophora squammulosa, was zipping through the ash heaps looking for nectar and burrowing in a pile of volcanic debris.

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

Volcanic ash advisory centers exist around the world and typically employ meteorologists, but volcanologists with experience in satellite data and dispersion modeling also work there.

Satellite remote sensing is used to monitor volcanic activity in isolated areas, track ash clouds, and detect surface temperatures.

Last April, Pfefferkorn and Wang, a paleobotanist with the Chinese Academy of Sciences, described the full magnitude of the find: an entire swath of ancient swamp forest frozen in time beneath more than 20 square miles of volcanic ash.

The new results might even help earth scientists who seek to infer the thickness of Earth's ancient atmosphere based on the size of raindrop craters left in now - hardened volcanic ash.

They then applied a precise dating technique based on natural radioactive decay of uranium, as Urs Schaltegger added: «In the sedimentary cross-sections, we found layers of volcanic ash containing the mineral zircon which incorporates uranium.

Ocean chemist Philip Boyd of the University of Otago in New Zealand says many other researchers have tried to link an infusion of iron from volcanic ash or even dust storms to plankton blooms, but this study is the first to «verify such a massive event.»

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.

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.

The ruins of the ancient Roman cities Pompeii and Herculaneum, and the perfectly preserved shapes of inhabitants who perished in the ashes, offer an unequivocal expression of the destructive power of volcanic eruptions.

Volcanic ash continued to fall, but in diminishing quantities.

A layer of ash buried in the underlying sediment confirms that Mono Lake predates a volcanic blast 760,000 years ago that created the nearby and still - active Long Valley Caldera.

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.

When Froese's lab identifies a core sample layer of volcanic ash from a known eruption in the area 3,595 years ago, it gives added confidence to the teams» timeline.

In 1815, the Indonesian volcano Tambora propelled more ash and volcanic gases into the atmosphere than any other eruption in history and resulted in significant atmospheric cooling on a global scale, much like Krakatau a few decades lateIn 1815, the Indonesian volcano Tambora propelled more ash and volcanic gases into the atmosphere than any other eruption in history and resulted in significant atmospheric cooling on a global scale, much like Krakatau a few decades latein history and resulted in significant atmospheric cooling on a global scale, much like Krakatau a few decades latein significant atmospheric cooling on a global scale, much like Krakatau a few decades later.

Schneider coauthored a 1971 article in the journal Science about atmospheric aerosols — floating particles of soil dust, volcanic ash, and human - made pollutants.

A volcanic eruption in Papua New Guinea on Friday sent smoke and ash spewing high over the South Pacific island nation, leading some aircraft to alter their flight paths.

First Vitruvius, an engineer for the Emperor Augustus, and later Pliny the Elder recorded that the best maritime concrete was made with ash from volcanic regions of the Gulf of Naples (Pliny died in the eruption of Mt. Vesuvius that buried Pompeii), especially from sites near today's seaside town of Pozzuoli.

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.»

Airliners may have to avoid these in future, just as they do with volcanic ash clouds, to minimise any risk to travellers and crew.

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.

This image shows a drill core of volcanic ash - hydrated lime mortar from the ancient port of Baiae in Pozzuloi Bay.

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.

Chemical analysis showed that the ash was volcanic fallout from the Thera eruption, but instead of resting in neat layers, the ash had washed into peculiar places: a broken, upside - down pot; the courtyard's drain; and one long, continuous film in the main street outside.

The Indonesian supervolcano Toba had one of these eruptions about 73000 years ago, when 2800 cubic kilometers of volcanic ash was ejected into the atmosphere and rained down and covered enormous areas in Indonesia and India.

The evidence came to light in 2003 when Gonzalez, along with David Huddart of LJMU and Matthew Bennett of Bournemouth University in England, were studying a formation of volcanic ash in the Valsequillo Basin, south of Puebla.

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