Презентация, доклад к уроку загрязнение мирового океана

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1. Презентация к уроку загрязнение мирового океана
2. The main sources of noise pollutionThe three
3. ShipsLarge international cargo ships, Cruise ships constantly dissect the ocean, producing a lot of noise.
4. The problem is that these noises are
5. The noise caused by the exploration of
6. Military sonarMilitary sonarTo determine the location of
7. Thank you for attention

The main sources of noise pollutionThe three main sources of noise pollution of the world's oceans.Ships Oil and gas exploration Military sonar

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Презентация к уроку загрязнение мирового океана

Слайд 1Ocean noise pollution

Слайд 2The main sources of noise pollution
The three main sources of noise

pollution of the world's oceans.

Ships

Oil and gas exploration

Military sonar

The main sources of noise pollutionThe three main sources of noise pollution of the world's oceans.Ships Oil

Слайд 3Ships
Large international cargo ships, Cruise ships constantly dissect the ocean, producing

a lot of noise.

Слайд 4The problem is that these noises are for the most part

in the range from 20 to 300 hertz. In the same range are the sounds produced by many species of whales. Artificial noise makes communication of animals difficult. What is even more dangerous, whales are not able to distinguish the noise of the ship from the natural sounds of the ocean. This leads to a collision with ships, which is one of the main causes of the death of smooth whales around the world.
If noise becomes constant, whales often simply leave their habitats. This problem is most relevant in coastal areas and close to major ports.

The problem is that these noises are for the most part in the range from 20 to

Слайд 5The noise caused by the exploration of oil, gas and other

minerals
Works on carrying out seismic research, laying pipelines, building and dismantling platforms, drilling - all this is not only an integral part of the oil and gas industry, but also a source of loud constant noise.

Oil and gas exploration

Noise as a result of reconnaissance work
Pulsed aerogenerators (pneumatic guns) used to search for oil and gas under the seabed produce a very loud pulsating sound. This is one of the loudest artificial noises of anthropogenic origin in the ocean. Seismic pulses produced every 10-60 seconds for weeks or even months drive whales from habitual habitats.

The noise caused by the exploration of oil, gas and other mineralsWorks on carrying out seismic research,

Слайд 6Military sonar
Military sonar
To determine the location of submarines at a great

distance, military sonar systems produce one of the most powerful underwater sound signals.
Military sonar is used to determine the exact distance to the target. It emits powerful acoustic pulses and after reflection from the object takes them back. These high-frequency systems (over 10 kilohertz) are capable of transmitting acoustic pulses over a distance of thousands of meters.
These impulses are so strong that often whales and dolphins are thrown in groups on the shore, escaping from such a "sound" attack. In other cases, it disrupts their communication, changes eating behavior, causes temporary loss of hearing and chronic tissue damage. As a result, marine mammals leave habitual habitats.