Hi Oerjan,
The location lies beneath the Portland/Denver flight path, and about 200 mi=
les east of Portland. The deep desert canyons shadow the sky, so the the d=
uration of audible noise is shorter than up on the plains. However, reverbe=
rations off the cliffs and grassy slopes intensify the sonic blasts. Still,=
that location is pretty quiet compared to most of Oregon.
Yes, what exactly is,"the price we have to pay?". A pause in our afternoon =
tea party conversations? Predations of human progress, most of them very no=
isy, have left our planet's ecosystems in tatters, but we cannot hope to in=
habit this planet very long without those ecosystems. So what have we reall=
y gained from all this noise? Some fine tea for today anyway.
John Hartog
--- In =F6rjan rudstedt <> wrote=
:
>
> Thank you John!
> Yes I agree. It`s a terrible noise. Is the airport near by? A couple of
> years ago the jet trafic over the Baltic Sea and Gotland was changed .
> Now we hear an airplane every 5 min passing( during daytime, it=B4s bette=
r
> early in the morning.) No landing or taking off, they pass at an
> altitude of 10000 meters.
> Most people here are so used to the sound they don=B4t even hear it (
> that=B4s what they say at least or "that=B4s the prize we have to pay for=
> free traveling around the world".
> I=B4m still wondering what the effect will be for " mother nature " in th=
e
> long run.Does anybody know?
> Oerjan
>
>
> hartogj wrote:
> >
> >
> > I present this recording of ravens and a passing jet airplane as a
> > reminder of the value of pristine natural soundscapes. (33MB, 24min)
> >
> > http://www.rockscallop.org/ear/jh-20090906_jet-raven.mp3
> > <http://www.rockscallop.org/ear/jh-20090906_jet-raven.mp3>
> >
> > Recorded with Rode NT1A microphones and Sound Devices 702 recorder
> >
> > John Hartog
> >
> >
>
>
>
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