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| Five Biscayne National Park shipwrecks in relation to nautical charts (modern and historic) and bathymetry. |
Module 8 begins our three week investigation of shipwrecks within Biscayne National Park. This week of preparation involved locating, downloading, and properly preparing bathymetric data as well as historic nautical charts. The National Oceanic and Atmospheric Administration was the source for both. The Historic Map and Chart Collection (http://historicalcharts.noaa.gov/) provides a wealth of historic charts, with the only caveat being they must be georeferenced once acquired. Although initially frustrating, this proved to be simpler than I had assumed. Having the data represented in the historic chart (in this case from 1856) is important if one is interested in knowing the quality of data available at the time of a shipwreck.
The bathymetric data proved more troublesome to locate. After trying several downloads (including multibeam data that I may not have processed properly), I finally chose the image above featuring good detail but covering only the western portion of the Park. This image as well as the historic chart were clipped to the boundary of Biscayne National Park.
This was an enjoyable module that proved slightly frustrating when it came to finding the best data source. Nonetheless, I am glad to get more experience in locating and processing data for a project.
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