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Summary:
On Aug. 7, 2008, Alaska's Kasatochi volcano erupted, hurling more
than a million tons of volcanic ash and sulfur dioxide into the
stratosphere. This produced unusually colorful sunrises and sunsets
around the northern hemisphere for months. Purple is one of the
telltale colors of a volcanic sunset. Fine volcanic aerosols in
the stratosphere scatter blue light which, when mixed with ordinary
sunset red, produces a violet hue. Other signs to look for include
a bright yellow "twilight
arch" and long crepuscular rays and shadows. |
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Photographer,
Location |
Images |
Comments |
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Dan
Bush,
Albany, Missouri
Aug. 24, 2008 |
#1,
more |
About
20 minutes after sunset this display of crepuscular rays
appeared in the west with great contrast and color. The
display was caused by clouds in Nebraska and points west
casting their shadows on the sky towards me here in Missouri.
The display lasted only a few minutes. Taken with a Nikon
D70 camera and 12mm lens with a 1/40th second exposure.
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Pete
Glastonbury,
Devizes, Wiltshire.UK
Oct. 26, 2008 |
#1 |
After
sunset tonight I saw a lovely purple colour in the western
sky for around 15 minutes. Could this be lingering aerosols
from Alaska's Kasatochi volcano? Camera, Pentax IST DL 18mm
lens ASA 100, F8 259th shutter speed. |
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Marco
Langbroek,
Leiden
Aug. 29, 2008 |
#1 |
Evening
twilight of 29 August 2008 was conspicuously purple in the
Netherlands. This was due to volcanic dust in the stratosphere,
spewed by the August 7 eruption of the Kasatochi volcano
in the Aleutians. Photo shows the Leiden Observatory in
the background. Canon EOS 450D + Tamron AF Di II 17-50/2.8
SP, 1/100s at F2.8 & 200 ISO |
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Marek
Nikodem,
Szubin, Poland
Sep. 8, 2008 |
#1,
#2, #3,
#4, more |
The
volcanic sky show continues over Poland. Last night (after
sunset) in Szubin, Poland I observed symetric rays crossing
on the sky. It was wonderful and fantastic! Nikon D50, 200
ASA, 1/15-1/50 sek |
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Didier
Van Hellemont,
Horebeke, Belgium
Sep. 2, 2008 |
#1,
more |
Very
bright colors at sunset, due to the aerosols of the Kasatochi
volcano. A very impressive sight, also thanks to the passing
clouds. |
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Doug
Zubenel,
At home near De Soto, Kansas.
Sep. 4, 2008 |
#1 |
A
cold front moved through our area during the past 24 hrs,
leaving very clear skies at sunset. The aerosols from Kasatochi,
however, were in great evidence, painting the twilight sky
pink and orange! Canon Rebel XTi with a 24mm Nikkor lens
@ f/5.6; 1/10th second exposure at ISO 100. |
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Stephen
O'Meara,
Volcano, Hawaii
Nov. 19, 2008 |
#1 |
After
sunset, the skies cleared suddenly and rapidly in the wake
of a strong rain storm. In the clearing twilight, I saw
Venus and Jupiter hovering over the bright colors of a Kasatochi
sunset – with cirrus clouds reddened by the volcanic aerosol
glow and the plume from the erupting Kilauea volcano silhouetted
against it! Then, as twilight deepened, the bright planets
tickled the Milky Way in Sagittarius, which rose above the
tree tops like smoke from a campfire. |
more
images (Oct. 24): S Mexico;
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