Water depths and seafloor bathymetry (submarine topography) are now routinely determined by____________
A) computerized, satellite- mounted, weighted lead- lines
B) ship- mounted radar with fiber- optical satellite uplink systems
C) ship- mounted or towed echo sounders
D) by satellite- linked, laser reflector systems

Question

Quizplus · Accepted Answer

Ship-mounted or towed echo sounders are the primary tools for determining water depths and mapping seafloor bathymetry. These devices work by emitting sound pulses downwards into the water. The sound waves travel to the seafloor, reflect back, and are detected by the echo sounder. The time it takes for the sound waves to return is used to calculate the depth of the water. This method is widely used because it provides accurate and detailed measurements of the seafloor.

Water Depths and Seafloor Bathymetry (Submarine Topography) Are Now Routinely