乌斯钵-拉冬-摩拉瓦 (Uzboi-Landon-Morava) 溢道系统是一长串的河床和洼地,可能曾携带着水流穿过了火星大部分的地区。它启源于流入阿耳古瑞区中阿耳古瑞盆地的河道。积蓄在阿耳古瑞盆地中的大水,据说随后漫溢而出向北奔流,一路穿过乌斯钵谷,进入拉冬盆地,再穿越摩拉瓦谷,最后抵达珍珠湾盆底[1][2][3]。其中部分水流可能冲刷蚀刻了阿瑞斯谷 [4][5][6][7][8] 。总之,该流域的总溢流面积可能约为 11 X 106公里2或约火星9% 的表面[9][2]。
下面的图片显示了曾经被水注满的阿耳古瑞盆地。此外,更广阔的视图显示了水流穿越的距离,从阿耳古瑞盆地以南一直到珍珠高地。
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显示了阿耳古瑞区地理环境的激光测高图。
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阿耳古瑞平原及其他地区边界激光测高图
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乌斯钵谷、拉冬谷以及附近其它特征位置图
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