topography

Spatial Analysis

Excerpt from sheet 1 of USGS Open-File Report 2014–1214 produced by the California Seafloor and Coastal Mapping Program. This view shows color shaded-relief bathymetry (seafloor depth) offshore of Half Moon Bay, California, approximately 30 kilometers (20 miles) south of San Francisco.

Excerpt from sheet 1 of USGS Open-File Report 2014–1214 produced by the California Seafloor and Coastal Mapping Program. This view shows color shaded-relief bathymetry (seafloor depth) offshore of Half Moon Bay, California, approximately 30 kilometers (20 miles) south of San Francisco.

Relief Shading

April 6, 2009By Caitlin DempseySpatial Analysis

There are different methods for achieving a shaded relief map and resources for understanding this cartographic technique are listed here.

GIS Data

Mapping the Earth – the Shuttle Radar Topography Mission

February 27, 2000By Caitlin DempseyGIS Data

Space Shuttle Endeavour lifted off on February 11. One of its missions is an ambitious mapping of the earth. Approximately 80 percent of the Earth will be mapped, an area that covers 95 percent of the Earth’s population.