Thanks for the nice discussion of the flight noise problem. The
skyvector web site was helpful and easy to use, to find flight paths.
Here in NC, USA, even the flights on the high level routes, interfere
very strongly with bird recording. I assume, but do not know for
sure, that these flights are at or over 35,000 feet. They seem awful
loud though!
Guy M.
On Feb 5, 2011, at 2:39 PM, Tom Williams wrote:
> Hi Guy,
>
> Not sure where in the world you're based, but this may be helpful,
> if a
> little in-depth...
>
> The majority of commercial flights use a system of routes known as
> "airways"
> which run between pre-defined points - some of these are ground-
> based radio
> beacons, and some are simply a designated set of lat/long coordinates.
> Aircraft departing from and arriving at a major airport will
> usually use
> Standard Instrument Departures (SIDs) and Standard Terminal Arrival
> Routes
> (STARs) to travel from the airport to the closest point of the airway
> network. So an aircraft's route is usually goes: Departure airport
> > SID >
> Airway routing > STAR > Arrival airport.
>
> If you're planning to record beyond about 30 miles from a major
> airport you
> probably don't need to worry about SIDs and STARs and can just
> check whether
> you're going to be under an airway. If you're in the USA this is
> easy to
> check - just go to http://www.skyvector.com, chose "charts" and
> take a look
> at the low and high en-route charts for your area of interest.
>
> If you ARE going to be close to a major airport then you might also
> want to
> see if you're going to be under a SID or STAR. Again this is easy
> in the USA
> - go to http://skyvector.com/airports and track down the page for the
> airport in question. Scroll down and you will see a list of SIDs
> and STARs
> (they refer to the STARS as DPs but it's the same thing).
> Annoyingly the
> charts don't show any ground features so you'll have to match up the
> lat/long of the route points with a topo map or Google Earth to see
> exactly
> where the route goes. Often different routes are used at different
> times of
> day and this is indicated on the charts.
>
> If you're outside of the USA getting hold of the info may be a bit
> trickier,
> but most countries do make it freely available in a document known
> as the
> Aeronautical Information Publication (AIP) which is usually
> available online
> - for example the UK one is located here:
> http://www.nats-uk.ead-it.com/public/index.php.html
>
> Once you have all this info you can then use a site like
> FlightAware (USA)
> or http://www.flightradar24.com (Europe) to find out which of the
> airways
> are most heavily used and at what times of day.
>
> None of this is foolproof - when traffic volumes are low an air
> traffic
> controller will often give pilots more direct routes which doesn't
> follow
> one of the published airways. In addition military aircraft are a
> law unto
> themselves, as are general aviation flights which often fly at low
> altitude
> and navigate by means of visual references like roads and rivers
> rather than
> airways and radio beacons. Also these kinds of flights don't show
> up on
> flight tracking sites, so there's no guarantee you won't find
> yourself under
> a military low-flying route or next to a private airstrip.
>
> Hope this helps!
>
> Tom
>
> On 5 February 2011 18:48, hartogj <> wrote:
>
>>
>>
>> Hi Guy,
>> I think this is the site I have used before for flight tracks in
>> my area:
>> http://flightaware.com/live/
>>
>> John Hartog
>>
>>
>> --- In <naturerecordists%
>> 40yahoogroups.com>,
>> Badger <> wrote:
>>>
>>> Is there a good online reference for commercial flight paths--
>>> specifically a map?
>>>
>>> Thanks, Guy M.
>>>
>>>
>>> On Feb 4, 2011, at 7:31 PM, Paul Dickinson wrote:
>>>
>>>> Some of you may have already come across this online book: "Old
>>>> Growth in the East: A Survey", by Mary Byrd Davis. It is a state-
>>>> by-
>>>> state assessment of primary and old growth forests in the eastern
>>>> US. Looks like a pretty handy resource for nature recordists. If
>>>> only there were a cross-reference to commercial airline flight
>>>> paths.
>>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>
>
>
> ------------------------------------
>
> "While a picture is worth a thousand words, a
> sound is worth a thousand pictures." R. Murray Schafer via Bernie
> Krause.
>
> Yahoo! Groups Links
>
>
>
"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.
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