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[ Focus on Chemical Machinery Equipment Network ] We often think that the ocean is a quiet and silent place, full of animals that don't make much noise
.
When diving in the ocean, you can hear the sound of fish gnawing coral and squid swimming past you
.
But most importantly, you can almost always hear the hum of the ship's engine
.
This is a large part of modern marine problems.
Since the 1960s, the noise of ship traffic has doubled every ten years, which has caused deadly harm to marine life
.
Chemical machinery and equipment network hotspots pay attention to chemical machinery and equipment.
When diving in the ocean, you can hear the sound of fish gnawing coral and squid swimming past you
.
But most importantly, you can almost always hear the hum of the ship's engine
.
This is a large part of modern marine problems.
Since the 1960s, the noise of ship traffic has doubled every ten years, which has caused deadly harm to marine life
.
Springer Nature’s open-access academic journal "Science Reports" published a biological research paper stating that the engine noise of whale watching ships seriously interferes with short-limbed pilot whales' rest and nursery
.
The paper pointed out that past studies have found that the noise produced by whale watching boats affects cetacean behavior, but it is not clear how the noise level of the engine affects cetacean behavior, and the noise level of whale watching boats is currently not regulated
.
.
The paper pointed out that past studies have found that the noise produced by whale watching boats affects cetacean behavior, but it is not clear how the noise level of the engine affects cetacean behavior, and the noise level of whale watching boats is currently not regulated
.
Using drones to observe mothers and cubs of short-limbed pilot whales in the waters of Tenerife, Spain, these findings indicate that even if the whale-watching ship complies with existing guidelines, noisier engines will have a greater impact on cetacean behavior
.
It is recommended to minimize the noise generated by the whale watching boat, and the whale watching guide clearly stipulates the maximum engine noise to limit the interference to the cetaceans
.
.
It is recommended to minimize the noise generated by the whale watching boat, and the whale watching guide clearly stipulates the maximum engine noise to limit the interference to the cetaceans
.
So how should we protect cetaceans from noise? Noise monitoring becomes particularly important at this time
.
Only by clearly understanding the size of the noise can the noise be better controlled
.
.
Only by clearly understanding the size of the noise can the noise be better controlled
.
The realization of scientific noise monitoring is inseparable from the use of noise monitoring instruments
.
Common monitoring indicators for noise include: the intensity of noise, that is, the sound pressure in the sound field; the characteristics of noise, that is, the various frequency components of sound pressure.
Commonly used noise measuring instruments include: sound level meters, noise testers, and environmental noise Automatic monitor, frequency analyzer, real-time analyzer, sound intensity analyzer, noise level analyzer, noise dosimeter, automatic recorder, tape recorder
.
Monitoring instrument.
Common monitoring indicators for noise include: the intensity of noise, that is, the sound pressure in the sound field; the characteristics of noise, that is, the various frequency components of sound pressure.
Commonly used noise measuring instruments include: sound level meters, noise testers, and environmental noise Automatic monitor, frequency analyzer, real-time analyzer, sound intensity analyzer, noise level analyzer, noise dosimeter, automatic recorder, tape recorder
.
The sound level meter is a handheld instrument with a microphone
.
When sound propagates heavily in the air, sound waves will cause changes in air pressure.
The microphone can detect this change and convert it into an electrical signal to determine the value of the noise level based on the electrical signal
.
Sound level meters are included in the "List of Measuring Instruments Subject to Compulsory Management" and are widely used in various fields such as machine manufacturing, architectural design, transportation, environmental protection, medical and health, and national defense engineering, and become a must-have noise measurement in almost all departments instrument;
.
When sound propagates heavily in the air, sound waves will cause changes in air pressure.
The microphone can detect this change and convert it into an electrical signal to determine the value of the noise level based on the electrical signal
.
Sound level meters are included in the "List of Measuring Instruments Subject to Compulsory Management" and are widely used in various fields such as machine manufacturing, architectural design, transportation, environmental protection, medical and health, and national defense engineering, and become a must-have noise measurement in almost all departments instrument;
In addition, the automatic environmental noise monitor uses a sound pressure sensor instead of a microphone as a device for detecting sound pressure, and has the functions of automatic data collection, storage, and processing
.
Depending on the monitored area, noise monitoring methods can be divided into mesh-point method, the link distribution method, continuous monitoring staging point method or the like
.
sensor.
Depending on the monitored area, noise monitoring methods can be divided into mesh-point method, the link distribution method, continuous monitoring staging point method or the like
.
It is hard to imagine that ocean noise is becoming an "invisible killer" facing marine animals
.
Noise will cause marine animals to change the rules of life, such as changing the rules of floating and diving, changing the form of pronunciation, etc.
, and even cause them to be unable to avoid obstacles and cause "fatal" collisions
.
Exposure of marine animals to high-intensity sounds may cause temporary hearing loss or reduced sensitivity
.
The most serious is that noise pollution can also cause diseases of marine biological organs, affect the surrounding ecosystems, and threaten marine biological resources
.
.
Noise will cause marine animals to change the rules of life, such as changing the rules of floating and diving, changing the form of pronunciation, etc.
, and even cause them to be unable to avoid obstacles and cause "fatal" collisions
.
Exposure of marine animals to high-intensity sounds may cause temporary hearing loss or reduced sensitivity
.
The most serious is that noise pollution can also cause diseases of marine biological organs, affect the surrounding ecosystems, and threaten marine biological resources
.
Original title: Noise has become the "invisible killer" of marine animals.
Measuring instruments to escort
Measuring instruments to escort
