水深图(Bathymetric chart)在海洋科学中也称等深線圖,在测绘学中一般称为海底地形图,是一种表示海底起伏的普通海图,可以视作陆地地形图在海洋区域的延伸。[1]水深图(海底地形图)使用等深线表示海底起伏状况,并且详细表示有海底底质、礁石、海底管线等人工地物和其他基本地理要素。[2]
![Thumb](http://upload.wikimedia.org/wikipedia/commons/thumb/9/99/LoihiBathemetric.jpg/320px-LoihiBathemetric.jpg)
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