JPEG Images of seismic-reflection profiles collected in Lake Mohave in 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. For more information on the seismic surveys see http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2002-020-FA These data are also available via GeoMapApp (http://www.geomapapp.org/) and Virtual Ocean ( http://www.virtualocean.org/) earth science exploration and visualization applications.莫哈韦湖（Lake Mohave）是科罗拉多河（Colorado River）上修建的多用途水库之一。该湖于1953年戴维斯大坝（Davis Dam）完工后正式形成。自大坝建成以来，尚未开展过该湖湖底的测绘工作。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。此次勘测涵盖了几乎覆盖全湖床的侧扫声呐（sidescan sonar）图像采集，以及贯穿全湖、间距较大测线上的高分辨率反射地震剖面（seismic-reflection profiles）数据采集。对湖床的详细测绘被用于确定自蓄水以来湖内淤积的沉积物总量、分布特征及其沉积过程。 如需了解地震勘测的更多详情，请访问http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2002-020-FA 这些数据还可通过GeoMapApp（http://www.geomapapp.org/）和Virtual Ocean（ http://www.virtualocean.org/）这两款地球科学勘探与可视化应用获取。