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Full-Text Articles in Physical Sciences and Mathematics
Beyond The Chart: The Use Of Satellite Remote Sensing For Assessing The Adequacy And Completeness Information, Shachak Pe'eri, Chukwuma Azuike, Lee Alexander, Christopher Parrish, Andy Armstrong
Beyond The Chart: The Use Of Satellite Remote Sensing For Assessing The Adequacy And Completeness Information, Shachak Pe'eri, Chukwuma Azuike, Lee Alexander, Christopher Parrish, Andy Armstrong
Center for Coastal and Ocean Mapping
Chart adequacy and completeness information consists of the symbols, abbreviations and warnings used to inform mariners of the level of confidence that should be given to data on a nautical chart. This information is derived both from the nautical chart and sailing directions. However, analysis based solely on these datasets is limited without access to the sources (e.g., smooth sheets). Publically-available, multi-spectral satellite imagery and published algorithms can be used to derive estimates of the relative bathymetry in shallow, clear waters. In this study, we evaluate the potential of these methods for supplementing the procedure to assess the adequacy of …
Development Of A Geo-Spatial Analysis Methodology For Assessing The Adequacy Of Hydrographic Surveying And Nautical Charts, Chukwuma Azuike, Shachak Pe'eri, Lee Alexander, Christopher Parrish, Andy Armstrong
Development Of A Geo-Spatial Analysis Methodology For Assessing The Adequacy Of Hydrographic Surveying And Nautical Charts, Chukwuma Azuike, Shachak Pe'eri, Lee Alexander, Christopher Parrish, Andy Armstrong
Center for Coastal and Ocean Mapping
IHO Publication C-55 (Status of Hydrographic Surveying and Nautical Charting Worldwide) contains information about the progress of hydrographic surveying and nautical charting for a country with navigable waters under its jurisdiction. Listed primarily as percent coverage, it is difficult to use this information to determine: 1) if the current level of surveying or charting is adequate or in need of action, or 2) can be used to compare different locations. An analysis and assessment methodology has been developed to assess the adequacy hydrographic surveying and nautical charting coverage. Indications of chart adequacy and completeness as depicted on current charts or …