| 词条 | Moreux (crater) |
| 释义 |
| titlecolor = #FA8072 | title = Moreux Crater | image = Ismenius lacus.JPG | image_size = 200px | caption = Map of Ismenius Lacus quadrangle which is located just north of Arabia, a large bright area of Mars. It contains large amounts of ice in glaciers that surround hills. | coordinate_title = Coordinates | globe = Mars | coordinates = {{coord|42.1|N|315.6|W|globe:mars_type:landmark|display=inline,title}} | diameter = 138 km | eponym = Theophile Moreux, a French astronomer and meteorologist (1867-1954) }}Moreux is a crater in the Ismenius Lacus quadrangle on Mars with a diameter of 138 kilometers. It is located at 42.1° north latitude and 315.6° west longitude and was named by IAU's Working Group for Planetary System Nomenclature after Theophile Moreux, a French astronomer and meteorologist (1867–1954).[1] GlaciersMoreux Crater's appearance has been shaped by the action of glaciers. Recent research, using a variety of images from various cameras, discovered extensive glacial modification of the surfaces of Moreux Crater's rim, wall, and central peak. These changes were caused by the emplacement of ice-rich material when the climate underwent major changes.[2] The picture from HiRISE below shows possible kettles in Moreux Crater. Impact craters generally have a rim with ejecta around them, in contrast volcanic craters usually do not have a rim or ejecta deposits. As craters get larger (greater than 10 km in diameter) they usually have a central peak.[3] The peak is caused by a rebound of the crater floor following the impact.[4] Sometimes craters expose layers that were buried. Rocks from deep underground are tossed onto the surface. Hence, craters can show us what lies deep under the surface. DunesSee also
References1. ^{{cite web|title=Gazetteer of Planetary Nomenclature {{!}} Moreux|url=http://planetarynames.wr.usgs.gov/Feature/4035|website=usgs.gov|publisher=International Astronomical Union|accessdate=4 March 2015}} {{Geography of Mars}}{{portal bar|Mars}}2. ^Rishitosh K., S. Sinha, S. Murty. 2015. Amazonian modification of Moreux crater: Record of recent and episodic glaciation in the Protonilus Mensae region of Mars. Icarus 245:122-144. 3. ^http://www.lpi.usra.edu/publications/slidesets/stones/ 4. ^{{cite book|author=Hugh H. Kieffer|title=Mars|url=https://books.google.com/books?id=NoDvAAAAMAAJ|accessdate=7 March 2011|date=1992|publisher=University of Arizona Press|isbn=978-0-8165-1257-7}} 2 : Impact craters on Mars|Ismenius Lacus quadrangle |
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