SeaMARC 1A sidescan sonar mosaic for the Mississippi Fan

This ArcView GIS layer is a 25 m version of the completed SeaMARC 1A sidescan sonar mosaic.本ArcView地理信息系统（ArcView GIS）图层为已完成的SeaMARC 1A侧扫声呐镶嵌图的25米分辨率版本。