How is ultrasound used to measure sea depth?
2006-11-27 17:23:42 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Mostly with radar (light) and sonar (sound), by bouncing the waces off of the ocean's floor.
2006-11-27 17:27:04 · answer #1 · answered by QFL 24-7 6 · 1⤊ 0⤋
Depth of the sea is measured using SONAR
Sound Navigation and Ranging System
An ultrasound signal is sent from the top to the seabed. The signal bounces back to the source at the top. By calculating the time elapsed between sent and recieved using the speed of sound in water, the depth is measured.
2006-11-27 22:47:01 · answer #2 · answered by Santhosh S 5 · 0⤊ 0⤋
Fathometers. A sound is sent from a source straight down and the echo is picked up. Prior to that the temperatures and salinity of the water is measured since sound travels differently depending on those factors. The time from the sound's orign to the receipt of the echo factored with the temp and salinity gives an approximate measurement of sea depth. Also robots with pressure gages have been used. Depth is figured from the amount of pressure the water is pressing on the robot sub.
2016-05-22 21:31:57 · answer #3 · answered by Anonymous · 0⤊ 0⤋
In modern days sonars are used to measure the sea depth. The send em and note the time by which they are reflected back and then it is a case of
distance = time * velocity
2006-11-27 17:26:42 · answer #4 · answered by Anonymous · 0⤊ 0⤋
They measure the speed of the reverberations back to the sea vessel that is producing the ultrasound.
2006-11-27 17:28:31 · answer #5 · answered by B 6 · 0⤊ 0⤋