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Detailed text transcripts for TV channel - DW - 20171214:07:45:00

A question. elizabeth club from cologne wants to know why do migrating birds call to each other during their flight doesn t that cost them too much energy. every autumn there is frenzied activity at the gathering in resting places these cranes coming from northern europe have thousands of kilometers still to go before they reach their winter quarters wild geese also head to warmer climes in the winter when they begin their long journey they all honk loudly this vocalization is an important form of communication. much communication between animals goes on heard by humans elephants exchange signals in the infrasound part of the sound spectrum the tones are so low frequency that our ears can t pick them up. manta rays send acoustic messages underwater by ....

Doesn T , Elizabeth Club , Winter Quarters , Northern Europe , Manta Rays ,

Detailed text transcripts for TV channel - DW - 20171211:17:46:00

Signals in the infrasound part of the sound spectrum the tones are so low frequency that our ears can t pick them up. manta rays send acoustic messages underwater by beating their wing like fins we don t hear those signals either. that s in contrast to the noise the migratory geese and cranes make during their long journey. the birds constantly call back and forth that helps them keep track of their young in the air and tells them whether the lead bird needs to be relieved calling costs energy but saves energy for the formation overall. by the way the calls of a single crane are roughly as loud as those of a human weighing in around sixty decibels. ....

Manta Rays ,

Detailed text transcripts for TV channel - DW - 20171211:08:46:00

Signals in the infrasound part of the sound spectrum the tones are so low frequency that our ears can t pick them up. manta rays send acoustic messages underwater by beating their wing like fins we don t hear those signals either. that s in contrast to the noise the migratory geese and cranes make during their long journey. the birds constantly call back and forth that helps them keep track of their young in the air and tells them whether the lead bird needs to be relieved calling costs energy but saves energy for the formation overall. by the way the calls of a single crane are roughly as loud as those of a human weighing in around sixty decibels. ....

Manta Rays ,

CNN Wolf March 14, 2014 17:44:00

Any would we expect to see? well, in that part of the world off the coast of vietnam, we don t have that many stations, and i m not sure whether we d be able to record signals seismically, we might, but it might be on one or two stations. we re more likely to see the impact of an airplane into the sea on hydroacoustic arrays, basically cables that run on the ocean bottom and can measure pressure waves in the ocean or on infrasound, when you have an explosion it produced a wave in the atmosphere that can be recorded. we don t have that data available to us. but from looking at just the seismic data from malaysia and in northern sumatra, what we locate is very consistent with where we expect earthquakes, and it looks like a natural occurring earthquake off the west coast of sumatra. so it looks like another false lead, the chinese experts ....

Hydroacoustic Arrays , Ocean Bottom , Pressure Waves , Northern Sumatra , West Coast ,

CNN The Lead With Jake Tapper March 11, 2014 20:39:00

They are using acoustic sense fors to hear if the plane might still be moving. infrared, regular optical sensors, satellites. it s really an impressive array and, unfortunately, they still haven t been able to find anything, despite all of that gear. are we sure that the most advanced technology is being used? what is some of the other ones that searchers may be employing? it really seems like they are throwing just about everything at it, even the array of sensors used to detect nuclear launches. those sensors are being used. they are called infrasound. they look for low sound waves that are being used. it s really kind of everything and, still, they have no luck. it s amazing. this may sound like a strange question but after the boston marathon bombing, there was a lot of crowd sourcing. now, a lot of that information was proved to be incorrect but some of it was proved correct. ....

We Haven T , Optical Sensors , Acoustic Sense Fors , Al L , Sound Waves , Crowd Sourcing , Boston Marathon Bombing ,