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Lau Crater is an impact crater in the Mare Australe quadrangle of Mars, located at 74.4°S latitude and 107.8°W longitude. It is 104.9 km in diameter and was named after Hans E. Lau, and the name was approved in 1973 by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN).〔(【引用サイトリンク】title=Planetary Names: Welcome )〕 The curved ridges observed on the crater floor are believed to be eskers, which form when streams run under a glacier. These eskers would indicate a large, thick sheet of ice once covered this region. ==See also== * Climate of Mars * Geology of Mars * Impact crater * List of craters on Mars 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Lau (crater)」の詳細全文を読む スポンサード リンク
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