Using the history of sea level rise and modern bathymetric maps, we can reconstruct the changing configuration of the coast over time. Martha’s Vineyard and Nantucket became isolated from the mainland between five and six thousand years ago. Since that time, slight changes in sea level have produced remarkably profound alterations in the shape of the major landforms.
Copyright (c) Brian R. Hall
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Notes:
A simplified approach to suggest the broad changes in Cape Cod and the Islands with sea-level rise as the glaciers melted. For the top six panels we used a reduced-resolution copy of the NOAA 1/3-Arc Second Bathymetry (http://maps.ngdc.noaa.gov/viewers/bathymetry/); the bottom three panes use the HF Bathymetry layer derived from NOAA Soundings data.