Sediment sample locations
![Illustration showing the contours of the bay floor underwater and the relief of surrounding hills, and dots.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/SedSampleLocs.jpg?itok=9rNXPYiZ)
Detailed Description
Gray shaded-relief image (or map) is used to provide a 3D representation of the floor of San Francisco Bay, or bathymetry (water depth). The land surrounding San Francisco Bay is colored to also provide a 3D representation of relief, or topography (land elevation). Locations of USGS sediment samples collected in winter 2008 within the San Francisco Bay study area are shown as dots on the shaded-relief map, and these samples are used to verify, or groundtruth, the bathymetric map.
Sources/Usage
Public Domain.