Fine ash content of explosive eruptions
نویسندگان
چکیده
Available online xxxx
منابع مشابه
Hail formation triggers rapid ash aggregation in volcanic plumes
During explosive eruptions, airborne particles collide and stick together, accelerating the fallout of volcanic ash and climate-forcing aerosols. This aggregation process remains a major source of uncertainty both in ash dispersal forecasting and interpretation of eruptions from the geological record. Here we illuminate the mechanisms and timescales of particle aggregation from a well-character...
متن کاملThe iron-catalysed surface reactivity and health-pertinent physical characteristics of explosive volcanic ash from Mt. Etna, Italy
Mount Etna is Europe’s largest and most active volcano. In recent years, it has displayed enhanced explosive activity, causing concern amongst local inhabitants who frequently have to live with, and clean up, substantial ashfall. Basaltic volcanic ash is generally considered unlikely to be a respiratory health hazard due to its often coarse nature (with few particles sub-10 μm diameter) and lac...
متن کاملAssessment of the potential respiratory hazard of volcanic ash from future Icelandic eruptions: a study of archived basaltic to rhyolitic ash samples
BACKGROUND The eruptions of Eyjafjallajökull (2010) and Grímsvötn (2011), Iceland, triggered immediate, international consideration of the respiratory health hazard of inhaling volcanic ash, and prompted the need to estimate the potential hazard posed by future eruptions of Iceland's volcanoes to Icelandic and Northern European populations. METHODS A physicochemical characterization and toxic...
متن کامل, B . ; Folch , A . ; Hensch , M . ; Matthias , V . : Volcanic ash over Europe during the eruption of Eyjafjallajökull on
15 During the eruption of Eyjafjallajökull on Iceland in April/May 2010, air traffic over Europe 16 was repeatedly interrupted because of volcanic ash in the atmosphere. This completely 17 unusual situation in Europe leads to the demand of improved crisis management, e.g. 18 European wide regulations of volcanic ash thresholds and improved forecasts of theses 19 thresholds. However, the quality...
متن کاملThe Eyjafjöll explosive volcanic eruption from a microwave weather radar perspective
The sub-glacial Eyjafjöll explosive volcanic eruptions of April and May 2010 are analyzed and quantitatively interpreted by using ground-based weather radar data and the Volcanic Ash Radar Retrieval (VARR) technique. The Eyjafjöll eruptions have been continuously monitored by the Keflavík C-band weather radar, located at a distance of about 155 km from the volcano vent. Considering that the Eyj...
متن کامل