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Identification of submarine hard-bottom substrates in the German North Sea and Baltic Sea EEZ with high-resolution acoustic seafloor imaging

  • Markus Diesing
  • Klaus Schwarzer

Abstract

Submarine hard bottoms (e.g., boulders, outcropping strata) are of particular ecological importance. They were investigated in the Exclusive Economic Zones (EEZ) of the German North Sea and the Baltic Sea, using high-resolution seafloor imaging techniques (i.e., sidescan sonar and multibeam echosounder). Examples are shown from the research areas Sylt Outer Reef (Sylter Außenriff; North Sea), Kadet Trench (Kadetrinne), and Adler Ground (Adlergrund) (both in the Baltic Sea). There exist distinct differences between the two continental shelf seas regarding the distribution of boulders and the density (percent coverage) of boulders per unit seafloor. The observed differences are attributed to (a) different geological evolution of the seafloor, and (b) different forcing by waves, tides and currents, which are responsible for the redistribution of sediments.

Keywords

Continental Shelf Exclusive Economic Zone Hard Bottom Sidescan Sonar Multibeam Echosounder 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Markus Diesing
    • 1
  • Klaus Schwarzer
    • 1
  1. 1.Institut für GeowissenschaftenChristian-Albrechts-Universität zu KielKielDeutschland

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