HR: 1340h
AN: OS33B-0591    [Abstracts]
TI: Microbathymetric And Bathymetric Surveying - A Comparison Of Seafloor Topography At Porcupine Bank, West Of Ireland
AU: * Pokorna, M
EM: keta512@yahoo.com
AF: Alfred Wegener Institute for Polar and Marine Research, Columbusstrasse, Bremerhaven, 27568 Germany
AU: * Pokorna, M
EM: keta512@yahoo.com
AF: Czech Technical University, Thakurova 7, Prague 6 - Dejvice, 16629 Czech Republic
AB: One of the latest discoveries in the world oceans are carbonate structures in the North-East Atlantic. In the frameworks of several European projects, research vessel Polarstern and underwater robot Victor 6000 were engaged to explore these areas. The data described in this paper were collected during the expedition ARK XIX/3 between 16 - 19th June 2003. Bathymetric and microbathymetric data in parts of the Pelagia mound province, located on the northern Porcupine Bank, west of Ireland, were measured with two multibeam sonar systems deployed at different distances from the bottom. The compared models come from a Kongsberg Simrad EM 2000 multibeam sonar system and an Atlas Elektronik Hydrosweep DS-2 multibeam sonar system. Four of the measured areas were selected for a comparison. After necessary corrections of the data, Digital Terrain Models (DTM) were created using appropriate software. Can these DTMs be compared? What aspects influence the values of differences? Grid differences and correlations of the depth measurements provide answers to these questions.
DE: 3000 MARINE GEOLOGY AND GEOPHYSICS
DE: 3045 Seafloor morphology and bottom photography
DE: 1200 GEODESY AND GRAVITY
DE: 1294 Instruments and techniques
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting