Date: Fri, 30 Sep 2011 14:50:57 +0200
Nabro volcano (Eritrea/Ethiopia) : evidence of ongoing activity (satellite pictures)
Last update: September 29, 2011 at 11:19 pm by By
<http://earthquake-report.com/author/armand-vervaeck/> Armand Vervaeck
September 30, 2011 By
<http://earthquake-report.com/author/armand-vervaeck/> Armand Vervaeck
Nabro is an Eritrean volcano with NO historic eruption record. Earthquake-Report.com was one of the first publishers in the world detecting and describing this unexpected eruption. Our very extensive reports were also the work of our many readers who gave a lot of input.
Satellite imagery suggests that the eruption of Nabro Volcano, which began in June 2011, continues. The volcano is located on the edge of the Danakil Desert, a remote and sparsely populated area on the border between Eritrea and Ethiopia, and few eyewitness accounts of the eruption are available. Orbiting instruments such as the Advanced Land Imager (ALI) aboard Earth Observing-1 (EO-1), which acquired these images, may be the only reliable way to monitor Nabro.
The images show the volcano in false-color (first) and natural-color (lower second) on September 28, 2011. Heat from vents in Nabro's central crater is visible as a red glow in the false-color image. Another hotspot about 1,300 meters (4,600 feet) south of the vents reveals an active lava flow. A pale halo surrounding the vents indicates the presence of a tenuous volcanic plume. South of Nabro's crater, the dark, nearly black areas are coated with ash so thick it completely covers the sparse vegetation. On either side of this region is a thinner layer of ash with some bright green vegetation (exaggerated in false-color) poking through.
In the natural-color image, the arid landscape is light brown where it is not covered by ash. The ash is black, while a fresh lava flow, spewed out in the last two weeks of June, is dark brown. More fresh lava flows surround the active vents. On either side of Nabro's caldera, ephemeral streams have washed away the ash, leaving light-colored channels behind-a first sign of the erosion that will reshape, and eventually remove, what the eruption built.
<http://earthquake-report.com/wp-content/uploads/2011/09/Nabro-29092011-1.jp
g>
http://earthquake-report.com/wp-content/uploads/2011/09/Nabro-29092011-1.jpg
<http://earthquake-report.com/wp-content/uploads/2011/09/Nabro-29092011-1.jp
g> Courtesy NASA Earth Observatory
<http://eoimages.gsfc.nasa.gov/images/imagerecords/52000/52323/nabro_ali_201
1271_swir_lrg.jpg> download large image (405 KB, JPEG)
<http://earthquake-report.com/wp-content/uploads/2011/09/Nabro-29092011-2.jp
g>
http://earthquake-report.com/wp-content/uploads/2011/09/Nabro-29092011-2.jpg
<http://earthquake-report.com/wp-content/uploads/2011/09/Nabro-29092011-2.jp
g> Courtesy NASA Earth Observatory
<http://eoimages.gsfc.nasa.gov/images/imagerecords/52000/52323/nabro_ali_201
1271_lrg.jpg> download large image (2 MB, JPEG)
Read also :
<http://earthquake-report.com/2011/06/23/eritrea-nabro-volcano-eruption-from
-the-earthquake-swarm-until-the-eruption-day-1-and-2/> From the earthquake
swarm until the eruption (day 1 and 2) (June 12)
Read also :
<http://earthquake-report.com/2011/06/23/eritrea-nabro-volcano-eruption-air-
traffic-disruption-and-the-aid-of-nasa-hd-satellite-images-day-3-4-and-5/>
Air traffic disruption and the aid of NASA HD satellite images (day 3, 4 and
5) (June 23)
Read also :
<http://earthquake-report.com/2011/06/30/eritrea-nabro-volcano-eruption-impr
essive-new-nasa-pictures/> Impressive new NASA pictures (June 30)
Read also :
<http://earthquake-report.com/2011/07/07/nabro-eruption-31-people-killed-at-
the-ethiopian-side-thousands-more-need-aid/> 31 people killed at the
Ethiopian side - thousands more need aid (July eight)
Read also :
<http://earthquake-report.com/2011/09/14/unusual-series-of-moderate-volcanic
-earthquakes-in-eritrea-and-ethiopia/> Seismic activity continues below
Nabro (September 14)
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