The marine digital terrain model of the Panarea caldera (Aeolian Islands, Southern Italy)

Abstract

A Marine Digital Elevation Model (MDEM) of the still active volcanic area of Panarea caldera is presented in this paper. A fast and accurate survey was performed by means of the Differential Global Positioning System (DGPS) geodetic technique coupled with an echo-sounding gear and a real time navigation software. The instrumentation was installed on board of a low draught boat in order to collect data starting from the bathymeter of one meter. Planar positions and depths were obtained with average accuracies of 30 cm and 10 cm respectively providing a 3D map of the seafloor useful for geomorphological, geophysical and volcanic hazard applications.

Keywords

• bathymetry
• DGPS
• marine DTM
• Panarea caldera