Water depths and seafloor topography are now routinely determined by _____________.
A)by satellite- linked, laser reflector systems
B)computerized, satellite- mounted, parallel transponder systems
C)ship- mounted echo sounders
D)ship- mounted, optical- fiber satellite uplink systems

Question

Quizplus · Accepted Answer

Seafloor topography and water depths are most commonly determined by ship-mounted echo sounders, which emit a pulse of sound waves and measure the time it takes for the sound to bounce back from the seafloor or any other underwater object. This method is also known as sonar technology. Option A (satellite-linked, laser reflector systems) and Option B (computerized, satellite-mounted, parallel transponder systems) are not commonly used for mapping seafloor topography and water depths. Option D (ship-mounted, optical-fiber satellite uplink systems) is not a relevant technology for such purposes.

Water Depths and Seafloor Topography Are Now Routinely Determined by _____________