ОписаниеPossible Cinder Cone on the Southern Flank of Pavonis Mons.jpg
English: This image is centred on a small cone on the side of one of Mars' giant shield volcanoes. The cone shows some layers of hard rock but most of it is made of relatively soft material. This appears to be an example of a "cinder" cone composed of pieces of lava thrown into the air during a small volcanic eruption.
Typically, such eruptions produce fountains of molten lava. Most of the lava would have cooled in this fountain, producing a loose pile of lava rocks. However, it appears that some pulses of the eruption allowed the lava to land without cooling much. These pieces were hot enough to weld together to make the hard layers we see today. The cone is 700 x 1100 meters in size, similar to many cinder cones on Earth.
In other parts of the image, we see channels carved by lava. It is sometimes difficult to tell if a channel was formed by flowing water or lava; in this case, it is possible to see that lava flows feed out of these channels.
Local Mars time: 3:43 PM. Latitude (centred): -1.1 °. Longitude (East): 246.6 °. Range to target site: 254.5 km. Original image scale range: 50.9 cm/pixel (with 2 x 2 binning) so objects ~153 cm across are resolved.
Map projected scale: 50 cm/pixel and north is up. Map projection: EQUIRECTANGULAR. Emission angle: 2.5 °. Phase angle: 53.3 °. Solar incidence angle: 56 °, with the Sun about 34 ° above the horizon. Solar longitude: 187.3 °, Northern Autumn.
На веб-сайте NASA размещено большое число изображений Советского/Российского космического агентства и других неамериканских космических агентств. Они вовсе не обязательно находятся в общественном достоянии.
Совместный проект SOHO (ESA & NASA) предполагает, что все материалы, созданные их зондом, защищены авторским правом и требуют разрешения для коммерческого необразовательного использования. [2]
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