Bathymetry--Offshore of Bodega Head, California

This part of DS 781 presents data for the bathymetry and shaded-relief maps of the Offshore of Bodega Head map area, California. Raster data file is included in "Bathymetry_OffshoreBodegaHead.zip," which is accessible from http://pubs.usgs.gov/ds/781/OffshoreBodegaHead/data_catalog_OffshoreBodegaHead.html. The bathymetry and shaded-relief maps of the Offshore of Bodega Head Map Area, California, were generated from bathymetry data collected by California State University, Monterey Bay (CSUMB), and by Fugro Pelagos. Mapping was completed between 2007 and 2010, using a combination of 200-kHz and 400-kHz Reson 7125, and 244-kHz Reson 8101 multibeam echosounders, as well as 468-kHz SEA SWATHPlus interferometric system. These mapping missions combined to collect bathymetry (sheets 1, 2) from about the 10-m isobath to beyond the 3-nautical-mile limit of California State Waters. NOTE: the horizontal datum of the bathymetry data (NAD83) differs from the horizontal datum of other layers in this data series (WGS84). Some bathymetry grids within this map were projected horizontally from WGS84 to NAD83 using ESRI tools to be more consistent with the vertical reference of the North American Vertical Datum of 1988 (NAVD88). These data are not intended for navigational purposes.本DS 781数据集的此部分包含美国加利福尼亚州博德加岬外海域制图区域的水深测量与阴影晕渲地图相关数据。栅格数据文件包含于"Bathymetry_OffshoreBodegaHead.zip"压缩包中，可通过链接 http://pubs.usgs.gov/ds/781/OffshoreBodegaHead/data_catalog_OffshoreBodegaHead.html 获取。 加利福尼亚州博德加岬外海域制图区域的水深测量与阴影晕渲地图，其数据源为蒙特雷湾加州州立大学（California State University, Monterey Bay, CSUMB）与富格罗佩拉戈斯（Fugro Pelagos）采集的水深测量数据。本次制图工作于2007年至2010年间完成，所使用的设备包括200kHz与400kHz型号Reson 7125多波束测深仪、244kHz型号Reson 8101多波束测深仪，以及468kHz型号SEA SWATHPlus干涉测量系统。本次测绘任务共采集了约10米等深线至加州州管海域3海里边界以外区域的水深测量数据（共包含图幅1、2）。 注意：本次水深测量数据采用的水平基准面为NAD83（北美大地基准1983），与本数据系列中其他图层所使用的WGS84（世界大地测量系统1984）水平基准面存在差异。本制图区域内部分水深栅格已通过ESRI工具从WGS84水平基准面投影转换至NAD83，以与1988年北美垂直基准面（NAVD88）的垂直参考系保持一致。本数据集数据不可用于航海导航用途。