| 词条 | Radau (crater) |
| 释义 |
| titlecolor = #FA8072 | title = Radau Crater | image = Radau Crater.jpg | image_size = 200px | caption = Central peak of Radau Crater, as seen by HiRISE | coordinate_title = Coordinates | globe = Mars | coordinates = {{coord|17.1|N|4.8|W|globe:mars_type:landmark|display=inline,title}} | diameter = 114.5 km }} Radau is an impact crater in the Oxia Palus quadrangle of Mars, located 17.1° N and 4.8° W. It measures 114.5 kilometers in diameter and was named for Rodolphe Radau, a French astronomer (1835–1911).[1] 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.[2] The peak is caused by a rebound of the crater floor following the impact.[3] See also
References1. ^{{cite web|title=Gazetteer of Planetary Nomenclature {{!}} Radau|url=http://planetarynames.wr.usgs.gov/Feature/4916|website=usgs.gov|publisher=International Astronomical Union|accessdate=4 March 2015}} {{Geography of Mars}}{{portal bar|Mars}}{{Mars-stub}}{{crater-stub}}2. ^http://www.lpi.usra.edu/publications/slidesets/stones/ 3. ^{{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 : Oxia Palus quadrangle|Impact craters on Mars |
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