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Sidescan Sonar

Part of the Springer Geology book series (SPRINGERGEOL)

Abstract

Sidescan sonar allows obtaining an acoustic image of the seafloor at high resolution, wide swath and relatively low cost. For that purpose the backscattered signal of an acoustic pulse sent out sideways from an instrument carrier is registered. At low incident angles small-scale relief is well imaged and the length of shadows allows calculation of the height of seafloor features but sidescan sonar is particularly useful in mapping compositional differences of the seafloor. Sidescan sonar images are, however, mostly uncalibrated and need some form of ground-truthing for meaningful geological interpretation. Interferometric sidescan sonar systems now also provide bathymetric information together with backscatter strength.

Keywords

  • Sidescan Sonar
  • Seafloor
  • Backscattering Strength
  • Side-looking Sonar
  • Synthetic Aperture Sonar

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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Acknowledgements

Tim Le Bas is thanked for the critical reading of an earlier version of this chapter.

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Correspondence to Ingo Klaucke .

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Klaucke, I. (2018). Sidescan Sonar. In: Micallef, A., Krastel, S., Savini, A. (eds) Submarine Geomorphology. Springer Geology. Springer, Cham. https://doi.org/10.1007/978-3-319-57852-1_2

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