scholarly journals A preliminary volcanic ash fall susceptibility map of Canada

2015 ◽  
Author(s):  
M C Kelman
Keyword(s):  
Volcanic Ash ◽  
Susceptibility Map ◽  
Ash Fall

scholarly journals Estimating building vulnerability to volcanic ash fall for insurance and other purposes

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
R. J. Blong ◽  
P. Grasso ◽  
S. F. Jenkins ◽  
C. R. Magill ◽  
T. M. Wilson ◽  
...  
Keyword(s):  
Volcanic Ash ◽  
Building Vulnerability ◽  
Ash Fall

Volcanic ash fall impacts

2015 ◽  
pp. 281-288 ◽  
Author(s):  
T.M. Wilson ◽  
S.F. Jenkins ◽  
C. Stewart
Keyword(s):  
Volcanic Ash ◽  
Ash Fall

Quantifying volcanic ash fall hazard to electricity infrastructure

2008 ◽  
Vol 177 (4) ◽  
pp. 1055-1062 ◽  
Author(s):  
Mark Bebbington ◽  
Shane J. Cronin ◽  
Ian Chapman ◽  
Michael B. Turner
Keyword(s):  
Volcanic Ash ◽  
Ash Fall ◽  
Electricity Infrastructure

Estimating the Volcanic Ash Fall Rate from the Mount Sinabung Eruption on February 19, 2018 Using Weather Radar

2019 ◽  
Vol 14 (1) ◽  
pp. 135-150 ◽  
Author(s):  
Magfira Syarifuddin ◽  
Satoru Oishi ◽  
Ratih Indri Hapsari ◽  
Jiro Shiokawa ◽  
Hanggar Ganara Mawandha ◽  
...  
Keyword(s):  
Volcanic Ash ◽  
Elevation Angle ◽  
Training Data ◽  
Classification Model ◽  
Column Height ◽  
Depth Information ◽  
Fall Rate ◽  
Angular Range ◽  
Ash Fall ◽  
Reflectivity Factor

This paper presents a theoretical method for estimating volcanic ash fall rate from the eruption of Sinabung Volcano on February 19, 2018 using an X-band multi-parameter radar (X-MP radar). The X-MP radar was run in a sectoral range height indicator (SRHI) scan mode for 6° angular range (azimuth of 221°–226°) and at an elevation angle of 7° to 40° angular range. The distance of the radar is approximately 8 km in the Southeastern direction of the vent of Mount Sinabung. Based on a three-dimensional (3-D) image of the radar reflectivity factor, the ash column height was established to be more than 7.7 km, and in-depth information on detectable tephra could be obtained. This paper aims to present the microphysical parameters of volcanic ash measured by X-MP radar, which are the tephra concentration and the fall-out rate. These parameters were calculated in a two-step stepwise approach microphysical model using the scaled gamma distribution. The first step was ash classification based on a set of training data on synthetic ash and its estimated reflectivity factor. Using a naïve Bayesian classification, the measured reflectivity factors from the eruption were classified into the classification model. The second step was estimating the volcanic ash concentration and the fall-out rate by power-law function. The model estimated a maximum of approximately 12.9 g·m-3of ash concentration from the coarse ash class (mean diameterDn= 0.1 mm) and a minimum of approximately 0.8 megatons of volcanic ash mass accumulation from the eruption.

Growth and decay of palsas and peat plateaus in the Macmillan Pass–Tsichu River area, Northwest Territories, Canada

1979 ◽  
Vol 16 (7) ◽  
pp. 1362-1374 ◽  
Author(s):  
G. P. Kershaw ◽  
Don Gill
Keyword(s):  
Northwest Territories ◽  
Volcanic Ash ◽  
Late Winter ◽  
White River ◽  
The Past ◽  
Ash Fall ◽  
Tall Plant ◽  
Reduction Of Area ◽  
Crustose Lichens ◽  
Peat Plateaus

Macmillan Pass, at 1350 m asl (above sea level), is located in the Selwyn Mountains at the Yukon–Northwest Territories border (63 °15′N, 130°02′W). This area lies within the discontinuous but widespread permafrost zone. Palsa–peat plateau complexes cover 0.7% of the 235 km2 study area and are found in bog and fen depressions at elevations from 1285–1690 m. Palsa heights range from 0.15–9.75 m and diameters from 3.25–75.0 m; peat plateaus have maximum heights of 2.5 m and maximum diameters of 225 m. Both features are vegetated by Cladina-Betula glandulosa, Cladina-Polytrichum-Cetraria, and crustose lichens-Polytrichum plant communities.Palsas and peat plateaus are windswept during winter. On surfaces which support recumbent (5–15 cm tall) plant communities there was an average of only 7.5 cm of snow during late winter 1978. Snow cover was thinner by a ratio of 1:4 compared to control areas.These permafrost features have formed since the White River volcanic ash fall of 1220 BP. On palsas and peat plateaus this ash occurs at an average depth of 21 cm and has an average thickness of 11.6 cm.Shrinkage and (or) total decay of palsas and peat plateaus has occurred during the past 34 years. In one palsa field this represents a 34% reduction of area whereas in two others, 100%. The areal extent of some peat plateaus has also been reduced.

More thoughts about Thera

1972 ◽  
Vol 19 (1) ◽  
pp. 37-46
Author(s):  
J. V. Luce
Keyword(s):  
Bronze Age ◽  
Volcanic Ash ◽  
South Coast ◽  
Late Bronze Age ◽  
Intrinsic Interest ◽  
Ash Fall ◽  
Magazine Articles ◽  
The Village ◽  
Firm Evidence ◽  
Initial Exploration

In 1965 the notable paper ‘Santorini Tephra’ by D. Ninkovich and B. C. Heezen provided the first firm evidence that the Late Bronze Age eruption of the Thera volcano directly affected the eastern part of Crete through ash fall-out. In July 1967 Professor Marinatos's initial exploration of a settlement buried under volcanic ash near the village of Akrotiri on the south coast of Thera received worldwide publicity, partly for its intrinsic interest, but perhaps even more because the discovery was linked with the magic word Atlantis. The whole subject was then extensively aired in newspaper and magazine articles, and three books on the theme of Thera-cum-Atlantis appeared in 1969.

scholarly journals EXPERIMENTS ON VOLCANIC ASH FALL IMPACTS ON AN OUTSIDE UNIT AND A COOLING TOWER OF BUILDING AIR CONDITIONING

2021 ◽  
Vol 27 (65) ◽  
pp. 580-585
Author(s):  
Kiyotoshi OTSUKA ◽  
Arihide NOBATA ◽  
Hitoshi SUWA ◽  
Tomohiro KUBO ◽  
Masamitsu MIYAMURA ◽  
...  
Keyword(s):  
Air Conditioning ◽  
Volcanic Ash ◽  
Cooling Tower ◽  
Ash Fall

scholarly journals Fragility Assessment of Vinyl Greenhouses and Livestock Sheds Subjected to Volcanic Ash Fall Hazards

2018 ◽  
Vol 17 (2) ◽  
pp. 369-376
Author(s):  
Hee Jung Ham ◽  
Seung Hun Choi ◽  
Wooseok Yun ◽  
Sungsu Lee ◽  
Ho-Jeong Kim
Keyword(s):  
Volcanic Ash ◽  
Ash Fall
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