Volcanic ash

(redirected from Ash fall)
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See under Ashes.

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References in periodicals archive ?
Today, nearly one billion people live within 93 miles of a volcano, and volcanic ash fall is a serious threat on global economies and infrastructure, according to a 2017 Swiss Re annual report.
The town of Severo-Kurilsk, located seven kilometer away from the volcano, had not experienced ash fall, the statement added.
The public is warned that sudden explosions, lava collapses, pyroclastic density currents (PDCs) and ash fall can still occur and threaten areas in the upper to middle slopes of Mayon.
Guatemala's disaster agency said 3,100 people had evacuated nearby communities, and ash fall from the eruption was affecting an area with a population of about 1.7 million of the country's 15 million or so people.
The biotic effects caused by Puyehue Cordon Caulle ash fall were vast and highly varied, similar to those observed after the eruption of the Mt.
"Lahar flow from Mayon, composed of 9 million cubic metre pyroclastic density currents and 1.5 million cubic metres of ash fall found their way to the Mi-isi, Lidung/Basud, and Buyuan channels, and could bury villages of Camalig and Daraga towns of Albay province since the volcano first spewed ash since Monday," Philippine Institute of Volcanology and Seismology (Phivolcs) head Renato Solidum told Gulf News on Sunday.
"It was like night-time at noon, there was zero visibility in some areas because the ash fall was so thick," he said.
Even if face masks are not among the prime commodities, they are important to the health of those affected by the ash fall.
He ordered schools to suspend classes, amid ash fall warnings following the explosion at the volcano.
"These events appear to have originated from the lava front and produced an ash cloud that drifted to the southwest sector," the institute explained, adding that ash fall had been reported in at least 27 villages in the municipalities of Guinobatan and Camalig in Albay province.
In an explosive eruption such as this, it is the ash fall and the potential for ash to mix with rainfall to create volcanic mudflows that is the real danger," volcano expert Erik Klemmeti said in an Evening Standard(https://www.standard.co.uk/news/world/bali-volcano-live-updates-as-the-volcano-remains-at-its-highest-alert-level-while-flights-to-most-of-a3710276.html) report.