Olgun, N. et al. (2011) Surface ocean iron fertilization: The role of airborne
volcanic ash from subduction zone and hot spot volcanoes and related iron flues into the Pacific Ocean.
Her materials include wax, oil, pigments from Morocco and India,
volcanic ash from Ecuador, rice paper, silver / gold / copper leaf, beads and electronic components from circuit boards; all combine to represent the layering of cultures, identities, histories and places, both formally and metaphorically.
Tirta Gangga saw a series of restorations following the destructive hot showers of
volcanic ash from the 1963 Mount Agung eruption.
It dates back to the reign of the late raja of Karangasem, and has seen a series of restorations following the destructive hot showers of
volcanic ash from Mount Agung eruption in 1963.
We provide
volcanic ash from Mt. Agung and heat it to 40 degrees centigrade.
Ngurah Rai International Airport, the main gateway for tourists to Bali, has been closed temporarily since 7:15 a.m. on Monday due to
volcanic ash from Mount Agung.
Bali Governor Mangku said
the volcanic ash from Mount Agung has reached 4,000 meters and headed to the southwest.
Meanwhile, Lombok International Airport general manager I Gusti Ngurah Ardita announced on Thursday morning that the airport would halt operations from 10:37 a.m. until midnight on account of the spread of
volcanic ash from Mt. Agung,
The airport authority has closed the airport for 24 hours since 7.15 a.m. on Monday due to the spread of
volcanic ash from Mount Agung.
The Transportation Ministry needs to pay attention to the aviation safety; it's important since
the volcanic ash from Mount Agung is very dangerous for airplanes and passenger safety,» said Jokowi.
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.
Lombok International Airport was closed once again on Nov. 30 due to
the volcanic ash from Mount Agung that headed to the southeast with the speed of 10kts.
The volcanic ash from the eruption has traveled to the east, causing the temporary closure of Lombok International Airport and cancellation of more than 5,000 flight seats, both domestic and international flights.
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.
The drill's filters, which clean water being pumped out of the borehole, became clogged with black dust — «
volcanic ashes from some past large volcanic eruption,» speculated Slawek Tulaczyk, a glaciologist from the University of California, Santa Cruz, who has studied this region for two decades and co-leads the drilling project.
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.
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.
Gordon Brown is to chair an urgent ministerial meeting this afternoon over the
volcanic ash which has grounded all flights to and
from the UK.
The ice was later covered with
volcanic ash, preventing it
from sublimating away into the thin atmosphere.
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.
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.
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.»
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.
«
Ash from dinosaur - era volcanoes linked with shale oil, gas: Shale oil, gas deposits accompany
ash layers
from thousands of
volcanic eruptions.»
From the current proportions of the two, the researchers dated the
volcanic ash at up to 8.1 million years old.
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.
Nutrient - rich
ash from an enormous flare - up of
volcanic eruptions toward the end of the dinosaurs» reign kicked off a chain of events that led to the formation of shale gas and oil fields
from Texas to Montana.
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.
Descriptions of
volcanic ash have survived
from ancient times.
This image shows a drill core of
volcanic ash - hydrated lime mortar
from the ancient port of Baiae in Pozzuloi Bay.
Environmentally friendly modern concretes already include
volcanic ash or fly
ash from coal - burning power plants as partial substitutes for Portland cement, with good results.
This photo
from December 2010 shows a one - meter long section of the West Antarctic Ice Sheet Divide core, with a dark layer of
volcanic ash visible.
The sensor identified silicate particles in
volcanic ash released over France's Bay of Biscay
from 60 kilometers awa
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.
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.
«Tiny
volcanic ash particles enter the atmosphere and can be transported long distances causing all kinds of problems,
from becoming an aviation hazard to affecting respiratory health for both humans and animals,» explains Mulukutla.
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.
Satellites can detect
volcanic ash by observing the scattering of ultraviolet light
from the sun.
Volcanic ash consists of very fine rock and mineral particles less than 2 mm in diameter that are ejected from a volcan
Volcanic ash consists of very fine rock and mineral particles less than 2 mm in diameter that are ejected
from a
volcanicvolcanic vent.
Unlike the
ash that forms
from burning wood or other combustible materials,
volcanic ash is hard and abrasive, rather than soft and fluffy.
A new look inside 2,000 - year - old concrete — made
from volcanic ash, lime (the product of baked limestone), and seawater — has provided new clues to the evolving chemistry and mineral cements that allow ancient harbor structures to withstand the test of time.
Two years earlier, the
ash from an unusually large number of major
volcanic eruptions reflected so much sunlight that 1816 became known as the year without a summer.
WoldeGabriel coauthored the paper and his role was to characterize the
volcanic ash and provide chemistry for local and regional correlation of the
ashes sandwiching the fossils
from Ethiopia's Chorora area, a region where copious
volcanic eruptions and earthquakes entombed fossils recently uplifted via ground motion and erosion.
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.
Next, they sieved
volcanic ash collected
from farmland near Eyjafjallajökull and kept those particles that were 57 micrometres in diameter or less.
Some 2.7 billion years ago, in what is now Omdraaisvlei farm near Prieska, South Africa, a brief storm dropped rain on a layer of
ash from a recent
volcanic eruption.
The passengers on board a 1982 British Airways flight
from London to Auckland, New Zealand, know that
volcanic ash and jet engines are a dangerous mix.
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.
On the ground, information
from aircraft with AVOID technology would be used to build an accurate image of the
volcanic ash cloud using real time data.