Interpretation of exposed bedrock from regional bathymetry and swath bathymetry in the Havsul I-IV areas offshore Møre og Romsdal
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Available information on bathymetry and seabed types has been compiled within the Havsul I-IV areas off Møre og Romsdal. Only a limited amount of detailed seabed information is available, and the main database for interpretation has been a regional, digital, bathymetric database with a grid size of 50x50 m. The main objective has been to interpret areas of exposed bedrock, as such information is of importance for the early planning for offshore wind energy parks. \rSwath bathymetry (3x3 m grid) from the Havsul II area documents that both large and small areas of bedrock exposures occur. Some small areas also occur within Havsul IV. Both a manual interpretation of the regional 50x50 m grid and an automatic interpretation approach show that exposed bedrock occurs at water depths shallower than 30 m in several sub-areas. Detailed mapping will also allow classification of sediments commonly occurring in the topographic lows between bedrock exposures. The preliminary study carried out here shows that several sites suited for foundation of wind mills probably occur in the Havsul I-IV areas.