Sidescan-sonar Tracklines in Geographic Coordinates from Lake Mohave - 2002

Lake Mohave is one of several multi-purpose reservoirs that have been constructed on the Colorado River. The lake was formed upon completion of the Davis Dam in 1953. No mapping of the floor of the lake had been conducted since completion of the Davis Dam. The U.S. Geological Survey, in cooperation with researchers from the University of Nevada Las Vegas, completed a geophysical survey of this lake in April 2002. The survey included collection of sidescan sonar imagery of nearly the entire lake floor, and high-resolution seismic-reflection profiles along widely spaced lines throughout the lake. The detailed mapping of the lake floor was used to determine the amount of sediment that had accumulated in the lake since impoundment, its distribution, and the processes of deposition.莫哈韦湖（Lake Mohave）是科罗拉多河上已建成的多用途水库之一。该湖于1953年戴维斯大坝（Davis Dam）竣工蓄水后形成。自大坝建成以来，尚未开展过该湖湖床的测绘工作。2002年4月，美国地质调查局（U.S. Geological Survey）与内华达大学拉斯维加斯分校（University of Nevada Las Vegas）的研究人员合作，完成了该湖的地球物理勘测。本次勘测涵盖了几乎覆盖全湖床的侧扫声呐（sidescan sonar）图像采集，以及沿全湖广泛布设间距较大测线的高分辨率地震反射剖面（high-resolution seismic-reflection profiles）获取。研究人员通过对湖床的精细测绘，得以确定该湖自蓄水以来的沉积物淤积总量、分布特征以及沉积作用过程。