The phrase "ash release" is correct and usable in written English.
It can be used in contexts related to volcanic activity, cremation, or any situation where ash is expelled or emitted.
Example: "The ash release from the volcano caused widespread disruption in the surrounding areas."
Alternatives: "ash emission" or "ash discharge".
On the other hand, ash released at any height from lower-latitude volcanoes (e.g. Deception Island) is more likely to encircle the globe and reach sub-polar latitudes by meandering advection.
Prof Achterberg told BBC News what the in-situ team was able to record: "Biological experiments showed that the volcanic ash released the iron that stimulated phytoplankton growth.
This could be done by pumping sulphur aerosols into the high reaches of the atmosphere, where they would have similar reflective properties to the ash released naturally by volcanoes.
δ(202 Hg values for Kingston coal ash released into the Emory River in 2008 are significantly negative (-1.78 ± 0.35‰), whereas sediments of the Clinch River, into which the Emory River flows, are contaminated by an additional Hg source (potentially from the Y-12 complex near Oak Ridge, Tennessee) with near-zero values (-0.23 ± 0.16‰).
The volcano poses risks to explorers including earthquakes, landslides and mudflows, volcanic gas and ash releases, explosions and lava flows, the department's presale report said.
The volcano is primarily hazardous to aircraft; many of the flights over the north Pacific approach the vicinity of the volcano, and volcanic ash released from eruptions can damage sensitive electronic equipment and sensors.
In the same news release ("EPA Announces New Action to Prevent Coal Ash Releases") the agency "anticipate[d]" a proposed rule by year's end and pledged "appropriate remedial action at any facility that is found to pose a risk for potential failure.
Overall, 28 days of volcanic activity and ash releases resulted in 345 (95%CI = [241, 460]) additional ER visits due to respiratory conditions.
Overall, during 28 days of volcanic activity and ash releases on average 138 girls 95%CI = [104, 207], and 206 boys 95%CI = [137, 252], were treated in ER in addition to typically observed level of 6.17 and 8.18 cases per day in girls and boys respectively.
The bridge rules, of which 30 are listed, include a prohibition on any exercise other than jogging, playing a musical instrument, taking part in a "gathering of any kind", giving a speech or address, scattering ashes, releasing a balloon and flying a kite.
