Soundwaves will bounce off features under the water and this echo is then identified by the echo sounder and the distance to the identified feature is calculated. These are then converted into soundwaves by an under-water transducer. As the boat moves across the water, the echo sounder will generate electrical signals. Traditionally, Bathymetric surveys are conducted using an echo sounder attached to a survey boat. Data can be collected for a variety of water bodies, including rivers, lakes and estuaries, and the data can be used to inform flood assessments and project developments. What are bathymetric surveys?īathymetric surveys are a type of hydrographic survey which map out the details of underwater terrain, illustrating the depth and land that lies beneath a body of water. This guide will explore what bathymetric surveys are, common methods for conducting bathymetric surveys and why they are important. Bathymetric surveys are a type of hydrographic survey which map out the details of underwater terrain, and are particularly important in terms of aiding navigation and dredging activities, and supporting land projects.
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