![]() The shorelines areĬonstructed entirely from hierarchically arranged closed polygons. Internal inconsistencies such as erratic points and crossing segments. GSHHG data have undergone extensive processing and should be free of These are encoded as levels 5 and 6, respectivelyĪnd users of GSHHG can choose which set to use. Two choices for Antarctica coastlines: Ice-front or Grounding line. The addition of AC since 2.3.0 allows us to offer The WDBII source also provides all political borders and rivers. Instances where differences in coastline representations necessitated adding WDBII islands to GSHHG. The WVS is our basis for shorelines except for Antarctica while the WDBII is the basis for lakes, although there are We present a high-resolution geography data set amalgamated from three data Smith, NOAA Geosciences Lab, National Ocean Service, Silver Spring, MD. ![]() Paul Wessel, SOEST, University of Hawai'i, Honolulu, HI. GSHHG A Global Self-consistent, Hierarchical, High-resolution Geography Database
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