Bridging the gap : creating near-shore bathymetric maps from multibeam swath of systems and conventional data

Abstract

This document contains information on The Bridging the gap: creating near-shore bathymetric maps from multibeam swath of systems and conventional data. The main focus of the NOS ocean mapping program has been to collect highly accurate and precisely navigated digital bathymetric data in depths deeper than 150 meters. Depths of these magnitudes may only partially cover continental shelf regions, which tend to be of particular interest to the mapping and other scientific communities. Thus, whenever possible, additional in-shore data sources are incorporated to supplement the multibeam survey data and provide a complete map depiction. This paper will discuss the current techniques used in integrating modern digital multibeam swath sonar data with additional in-shore sources; conversion of supplemental digital and non-digital hydrographic data: methods of incorporating cartographically interpreted contour lines derived from hand-digitization; raster scanning or vectorization; and outputs in both digital and analog forms.