Congo (near the border with Rwanda and Uganda) - Nyamuragira and Nyiragongo Volcanoes - 04.07.13
Posted by Ricardo Marcenaro | Posted in NASA: Democratic Republic of the Congo (near the border with Rwanda and Uganda) - Nyamuragira and Nyiragongo Volcanoes - 04.07.13 | Posted on 21:31
acquired July 29, 2013
download large image (2 MB, JPEG, 3276x2184)
acquired July 29, 2013
download GeoTIFF file (14 MB, TIFF)
Volcanic plumes stream from Nyamuragira and Nyiragongo
volcanoes in this false-color satellite image. The image—combining
shortwave infrared, near infrared, and green light—was collected by
Landsat 8 on July 29, 2013.
Located in the Democratic Republic of the Congo, near the border with
Rwanda and Uganda, the volcanoes are among the most active on Earth.
Nyiragongo features a persistent lava lake, revealed by the red glow of
shortwave infrared* light. A translucent blue volcanic plume stretches
north from Nyiragongo, partially shrouding Nyamuragira. The plume from
Nyamuragira is dense and white, suggesting the presence of large amounts
of water vapor. The landscape is a mixture of forest (bright green),
cleared areas (red-brown), and old lava flows (various shades of black,
brown, and green, depending on their age and the amount of vegetation
growing on them).
*Shortwave infrared is between near infrared (seen in infrared photography) and thermal infrared light (used by temperature sensors) on the electromagnetic spectrum. Shortwave infrared light is reflected by some surfaces (like bare soil), and emitted by very hot objects (lava or fires).
NASA Earth Observatory images by Robert Simmon, using Landsat 8 data from the USGS Earth Explorer.
Congo (near the border with Rwanda and Uganda) - Nyamuragira and Nyiragongo Volcanoes - 04.07.13
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