Αποτελέσματα Αναζήτησης
1 Ιαν 2019 · Sound speed in the sea is nearly five times faster than in the air, due to differences in the density and elasticity of the two mediums (Verfuß et al., 2015). In addition, sound transmission in shallow waters is strongly influenced by the local conditions of depth and the composition of the sea bed and surface reflection which is causing the ...
- Condition-Dependent Physiological and Behavioural Responses to Anthropogenic Noise
Eels in the two sound treatments did not differ...
- Sparus Aurata L
A research cabin was placed 8. m away from the sea cage.....
- Repeated Exposure to Noise Increases Tolerance in a Coral Reef Fish
Fish were introduced one at a time to the experimental arena...
- Snap, Crackle, and Pop
To evaluate the effect of loss of sponges on snapping shrimp...
- Interpreting Short-Term Behavioural Responses to Disturbance Within a Longitudinal Perspective
Investigations of anthropogenic disturbance often must...
- Temporal Structure of Sound Affects Behavioural Recovery From Noise Impact in European Seabass
Water temperature (9–16 °C), light intensity (320–1280 lux),...
- Condition-Dependent Physiological and Behavioural Responses to Anthropogenic Noise
17 Αυγ 2016 · As aquatic and terrestrial habitats differ in their sound propagation properties , i.e. sound in water travels faster and greater distances, and attenuates less than sound in air, noise pollution in aquatic ecosystems may be more far-reaching than in terrestrial ecosystems by covering larger areas. The interplay with other environmental ...
30 Μαρ 2022 · In warm water, sound waves propagate faster and last longer before fading. While many animals use sound to communicate with each other and navigate their underwater world, the increasing ocean sound transmission speed can impact their ability to feed, fight, find mates, avoid predators and migrate.
The large impedance contrast between air and water (the ratio is about 3600) and the scale of surface roughness means that the sea surface behaves as an almost perfect reflector of sound at frequencies below 1 kHz. Sound speed in water exceeds that in air by a factor of 4.4 and the density ratio is about 820.
9 Φεβ 2021 · Sound sources that have routinely been evaluated for adverse impacts on marine mammals include seismic air guns, military sonars, various types of in-water pile driving, underwater detonations, drilling, and, to some extent, civilian sonars and high-resolution geophysical (HRG) devices.
The speed of a wave is the rate at which vibrations move through the medium. Sound moves at a faster speed in water (1500 meters/sec) than in air (about 340 meters/sec) because the mechanical properties of water differ from air. Temperature also affects the speed of sound (e.g. sound travels faster in warm water than in cold water) and is very ...
Sound travels almost five times faster in the sea than in the air. In EU waters, underwater noise emissions doubled between 2014 and 2019. Blue and fin whales make sounds to find mates over hundreds of kilometres.
