Fitxer:Ruiz volcano.jpg
Fitxer original (3.997 × 3.408 píxels, mida del fitxer: 3,33 Mo, tipus MIME: image/jpeg)
 | Aquest fitxer i la informació mostrada a continuació provenen del dipòsit multimèdia lliure Wikimedia Commons. Vegeu la pàgina original a Commons |
Resum
| Descripció |
Space radar image of Nevado del Ruiz Original Caption Released with Image: This spaceborne radar image shows the Ruiz-Tolima volcanic region in central Colombia, about 150 kilometers (93 miles) west of Bogata. The town of Manizales, Colombia, is the pinkish area in the upper right of the image. Ruiz Volcano, also known as Nevado del Ruiz, is the dark red peak below and right of the image center. A small circular summit crater is visible at the top of Ruiz. Tolima Volcano is the sharp peak near the lower left corner of the image. The red color of the image is due to the snow cover and the lack of vegetation at high elevations in these volcanic mountains. Ruiz Volcano, at 5,389 meters (17,681 feet) elevation, is capped by glaciers. In 1985, an explosive eruption melted parts of these glaciers, triggering mudflows along narrow canyons on the sides of the volcano. The town of Armero, located just off the right side of the image, was buried by mud and 21,000 residents were killed. Scientists are using radar images of these remote yet dangerous volcanoes to understand the threats they pose to local populations. The image was acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) onboard the space shuttle Endeavour on April 14, 1994. The image is centered at 4.8 degrees north latitude and 75.3 degrees west longitude. North is toward the upper right. The image shows an area 40 kilometers by 48 kilometers (24.8 miles by 29.8 miles). The colors are assigned to different frequencies and polarizations of the radar as follows: red is L-band, horizontally transmitted, horizontally received; green is L-band, horizontally transmitted, vertically received; blue is C-band, horizontally transmitted, vertically received. SIR-C/X-SAR, a joint mission of the German, Italian and United States space agencies, is part of NASA's Mission to Planet Earth program. |
| Data | |
| Font | http://photojournal.jpl.nasa.gov/catalog/PIA01827 ID PIA01827 |
| Autor | Picture from NASA. Originally uploaded on the English Wikipedia by Darwinek |
| Permís (Com reutilitzar aquest fitxer) |
This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy). |
| Altres versions | File:Nevado del Ruiz - radar image from space.jpg has been rotated and cropped to focus on Nevado del Ruiz. |
Llicència
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Aquest fitxer és en el domini públic perquè ha estat creat per la NASA. L'avís legal de la NASA diu que «el material de la NASA no està protegit per copyright si no es diu el contrari». (NASA copyright policy page o JPL Image Use Policy). |  |
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| Data/hora | Miniatura | Dimensions | Usuari/a | Comentari | |
|---|---|---|---|---|---|
| actual | 11:46, 25 març 2009 | | 3.997 × 3.408 (3,33 Mo) | Avenue | Higher resolution version from http://photojournal.jpl.nasa.gov/jpeg/PIA01827.jpg (a link on the cited source page) |
| 11:17, 13 juny 2007 |  | 625 × 533 (120 Ko) | Maniago | {{Information |Description= Space radar image of [http://en.wikipedia.org/wiki/Nevado_del_Ruiz Nevado del Ruiz] |Source= http://en.wikipedia.org/wiki/Image:Ruiz_volcano.jpg |Date= |Author= Picture from [http://en.wikipedia.org/wiki/NASA NASA]. Originally |
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