02:23
Sonar
Renowned oceanographer and geophysicist Walter Munk talks about sonar, which stands for sound navigation and ranging, the process by which objects (like submarines, for example) are discovered when sound waves are reflected off of them and then dete...
01:19
Temperature and the Velocity of Sound
Renowned oceanographer and geophysicist Walter Munk talks about the relationship between temperature and the velocity of sound, observing that velocity increases with temperature. Because temperature generally increases anywhere from ten to twenty d...
01:41
Shadow Zones
Renowned oceanographer and geophysicist Walter Munk talks about shadow zones, which develop in response to surface heating and other geophysical phenomena, and behind which the volume of sound is much lower than in surrounding areas.