Re: Scientists discover singing iceberg


"George" <george@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:juHhf.572102$x96.93095@xxxxxxxxxxxx
>
> "Carsten Troelsgaard" <carsten.troelsgaard@xxxxxxx> wrote in message
> news:4386e8e9$1$156$edfadb0f@xxxxxxxxxxxxxxxxxxxxxxx
>>
>> "George" <george@xxxxxxxxxxxxxxxxxxxxx> skrev i en meddelelse
>> news:LUuhf.598139$xm3.63119@xxxxxxxxxxxx
>>> http://www.msnbc.msn.com/id/10194235/
>>>
>>> Updated: 5:01 p.m. ET Nov. 24, 2005
>>> BERLIN - Scientists monitoring earth movements in Antarctica believe
>>> they have found a singing iceberg.
>>>
>>> Sound waves from the iceberg had a frequency of around 0.5 hertz, too
>>> low to be heard by humans, but by playing them at higher speed the
>>> iceberg sounded like a swarm of bees or an orchestra warming up, the
>>> scientists said.
>>>
>>> Scientists from Germany's Alfred Wegener Institute for Polar and Marine
>>> Research published the results of its study, done in 2002, in Friday's
>>> issue of the journal Science.
>>>
>>> Between July and November 2002 researchers picked up acoustic signals
>>> of unprecedented clarity when recording seismic signals to measure
>>> earthquakes and tectonic movements on the Ekstroem ice shelf on
>>> Antarctica's South Atlantic coast.
>>>
>>> Tracking the signal, the scientists found a 30-by-12-mile
>>> (50-by-20-kilometer) iceberg that had collided with an underwater
>>> peninsula and was slowly scraping around it.
>>>
>>> "Once the iceberg stuck fast on the seabed it was like a rock in a
>>> river," said scientist Vera Schlindwein. "The water pushes through its
>>> crevasses and tunnels at high pressure and the iceberg starts singing."
>>>
>>> "The tune even goes up and down, just like a real song."
>>>
>>> The iceberg's song is available from Science's Web site as a
>>> 24-megabyte WAV sound file -
>>
>> Makes me think of a once in a lifetime experience on top of small
>> wind-swept mountain-top one cold and sunny winter-'morning' in
>> Greenland. I was passing a 100m by 15m wide deep-frozen puddle/lake when
>> it .. must have cracked or something. The sound was basically like a
>> combined shreek/gunk, but impressive becourse of the (1 hz) resonance
>> that accompanied it as it died out (the amplitude or maybe frequency
>> damped out in a 1 cycle/second ...)
>>
>> Carsten
>
> Cool (no pun intended). There are some rock formations (mostly natural
> bridges) here in Kentucky that sing during high winds. Unfortunately, I
> don't know of anyone who has catalogued the sounds. I'll have to look
> into that.
>
> George

Let me rephrase that. There are some rock formations that whistle during
high winds.


.

Relevant Pages

  • Re: Scientists discover singing iceberg
    ... > BERLIN - Scientists monitoring earth movements in Antarctica ... > believe they have found a singing iceberg. ... > Sound waves from the iceberg had a frequency of around 0.5 ...
    (sci.geo.geology)
  • Re: Scientists discover singing iceberg
    ... >> BERLIN - Scientists monitoring earth movements in Antarctica believe ... >> they have found a singing iceberg. ... >> Sound waves from the iceberg had a frequency of around 0.5 hertz, ...
    (sci.geo.geology)
  • Scientists discover singing iceberg
    ... BERLIN - Scientists monitoring earth movements in Antarctica believe they ... have found a singing iceberg. ... Sound waves from the iceberg had a frequency of around 0.5 hertz, ...
    (sci.geo.geology)
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