what is the role of echo sounders and satellite in capture fishery
Answers
Explanation:
Hydrographic echo sounders are used to measure the depth to the seafloor by using the properties of acoustic waves. The principle of echo-sounders is basic - by measuring the two-way travel time between the acoustic waves transmitted on sea surface and those reflected at seafloor.
Echo-sounders are classified into two types; Single-Beam Echo Sounder (SBES) and Multi-Beam Echo Sounder (MBES). The names of 'single' and 'multi' stem from the number of depth points measurements collected at the same time.
Single-Beam Echo Sounders (SBES)
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SBES systems were developed about 80 years ago and have substantially contributed to important primary oceanographic discoveries and developments. SBES are still commonly used in hydrographic surveying. A SBES can measure only one point per acoustic echo wave (echo) emitted. The specifications of SBES are defined by beam angle and frequency of transmitted acoustic wave from the transducer as well as many other sonar parameters which may be selected in order to provide water depth capabilities from less than 1 meter to full ocean depth.
eco sounders play a very important role in capturing fish.
Explanation:
- Nowadays as fishery science improve there has been Blue revolution resulting in the the eco technologies.
- sound waves are sent to the the ocean. If it is encountered by any fish which is present at a particular death then the sound wave returns back. Based on this the location and the the type of the fish can be found by ultrasound.
To know more about Blue revolution,
Define blue revolution. - Brainly.in
https://brainly.in/question/800061