Bathymetry Hillshade--Offshore of Salt Point Map Area, California

This part of DS 781 presents data for the bathymetry and shaded-relief maps of the Offshore of Salt Point map area, California. Raster data file is included in "BathymetryHS_OffshoreSaltPoint.zip", which is accessible from http://pubs.usgs.gov/ds/781/OffshoreSaltPoint/data_catalog_OffshoreSaltPoint.html.

The bathymetry and shaded-relief maps of the Offshore of Salt Point 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 from about the 10-m isobath to beyond the 3-nautical-mile limit of California's State Waters. NOTE: the horizontal datum of the bathymetry data (NAD83) differs from the horizontal datum of other layers in this DS (WGS84). These data are not intended for navigational purposes.

本数据集DS 781的该部分提供了加利福尼亚州盐角近海制图区的水深（bathymetry）与晕渲地形图（shaded-relief maps）相关数据。配套栅格数据文件收录于压缩包"BathymetryHS_OffshoreSaltPoint.zip"中，可通过链接http://pubs.usgs.gov/ds/781/OffshoreSaltPoint/data_catalog_OffshoreSaltPoint.html获取。

加利福尼亚州盐角近海制图区的水深与晕渲地形图，由加州州立大学蒙特雷湾分校（California State University, Monterey Bay, CSUMB）与Fugro Pelagos采集的水深数据生成。本次制图工作于2007年至2010年间完成，综合使用了200kHz与400kHz型号Reson 7125多波束测深仪（multibeam echosounders）、244kHz型号Reson 8101多波束测深仪，以及468kHz型号SEA SWATHPlus干涉测量系统（interferometric system）。本次制图任务共采集了约10米等深线（isobath）至加州州管水域3海里（nautical-mile）以外区域的水深数据。注：本次水深数据的水平基准面（horizontal datum）为NAD83，与本数据集（DS 781）中其他图层的水平基准面WGS84不一致。本套数据不得用于导航用途。