Twin volcanic plumes—one of ash, one of gas—rose from Sicily’s Mount Etna on the morning of October 26, 2013. L’Istituto Nazionale di Geofisica e Vulcanologia (INGV) Osservatorio Etneo (National Institute of Geophysics and Volcanology Etna Observatory) reported that Etna was experiencing its first paroxysm in six months. Multiple eruption columns are common at Etna, a result of complex plumbing within the volcano. The Northeast Crater, one of several on Etna’s summit, was emitting the ash column, while the New Southeast Crater was simultaneously venting mostly gas.
This natural-color image collected by Landsat 8 shows the view from space at 11:38 a.m. local time. The towering, gas-rich plume cast a dark shadow over the lower, ash-rich plume and Etna’s northwestern flank. Relatively fresh lava flows (less than a century or so old) are dark gray; vegetation is green; and the tile-roofed buildings of Bronte and Biancavilla lend the towns an ochre hue.
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NASA Earth Observatory image by Jesse Allen and Robert Simmon, using Landsat data from the USGS Earth Explorer. Caption by Robert Simmon with contributions from Boris Behncke.
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GCMD >> Earth Science >> Solid Earth >> Volcanoes >> Volcanic Ash/Dust
GCMD >> Earth Science >> Solid Earth >> Volcanoes >> Volcanic Gases
GCMD >> Location >> Sicily
SVS >> Hyperwall
NASA Science >> Earth
SVS >> Presentation
GCMD >> Earth Science >> Human Dimensions >> Natural Hazards >> Volcanic Eruptions
GCMD keywords can be found on the Internet with the following citation:
Landsat-8/OLI/Band Combination 2,3,4 also referred to as: True Color
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 18.104.22.168.0