acquired July 25, 2013
download large image (3 MB, JPEG, 4534x4534)
acquired July 25, 2013
download GeoTIFF file (23 MB, TIFF)
acquired July 9, 2013
download large image (4 MB, JPEG, 4534x4534)
acquired July 9, 2013
download GeoTIFF file (24 MB, TIFF)
acquired July 9 - 25, 2013
download Google Earth file (KML)
A month and a half of continuous eruption has left the caldera of Veniamanof Volcano—one
of the largest on the Alaskan Peninsula—coated with ash. Variable winds
carried ash away from the eruption vent, leaving a radial pattern of
dark streaks across the ice-filled caldera and the surrounding glaciers
and snowfields.
The natural-color Landsat 8
image of Veniamanof (top) was collected on July 25, 2013. At the time,
three separate, small plumes—one ash-rich and two steam-rich—rose from a
300-meter (1,000-foot) high cinder cone near the western rim of the caldera and the aptly-named Cone Glacier.
Sixteen days earlier (lower image), much less ash was visible. It is
likely that ash from earlier stages of the eruption was hidden by fresh
snow. From July 9–25, much of the snow melted during the long summer
days (probably accelerated by the presence of the ash), and additional ash accumulated as the eruption continued.
The Alaska Volcano Observatory (AVO) originally detected an eruption at Veniamanof on June 13, 2013. On July 25, AVO reported
volcanic tremors, high surface temperatures, and nighttime glow. These
signals indicated “an ongoing low-level eruption characterized by
intermittent effusion of lava and emission of minor amounts of ash and
steam.”
NASA Earth Observatory images by Robert Simmon, using Landsat 8 data from the USGS Earth Explorer. Caption by Robert Simmon.
- Instrument:
- Landsat 8 - OLI
NASA: USA - Veniamonof Volcano - Ash and Snow - 03.07.13
Ricardo M Marcenaro - Facebook
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Gracias :)
solitary dog sculptor:
http://byricardomarcenaro.blogspot.com
Solitary Dog Sculptor I:
http://byricardomarcenaroi.blogspot.com
Para:
comunicarse conmigo,
enviar materiales para publicar,
propuestas:
marcenaroescultor@gmail.com
For:
contact me,
submit materials for publication,
proposals:
marcenaroescultor@gmail.com
My blogs are an open house to all cultures, religions and countries. Be a follower if you like it, with this action you are building a new culture of tolerance, open mind and heart for peace, love and human respect.
Thanks :)
Mis blogs son una casa abierta a todas las culturas, religiones y países. Se un seguidor si quieres, con esta acción usted está construyendo una nueva cultura de la tolerancia, la mente y el corazón abiertos para la paz, el amor y el respeto humano.
Gracias :)
