14 janeiro 2004
Continuando na questão das marcas estranhas que surgiram no aeródomo de Águeda contactei alguns especialistas cuja opinião aqui transcrevo.

Jiri Borovicka, um especialista em meteoros.

I agree with your argumentation. There is no evidence for a meteorite
fall. The meteorites or their remnants should be found near the holes.
I also have information that the widely observed fireball of January 4
flew completely over the territory of Spain, so no meteorites from this
event could land in Portugal.


Marco Langbroek da Dutch Meteor Society (DMS)

I don't think these holes can be related to the 4 january fireball at all: simply because they are on the wrong geographic location. With what we now know about the trajectory, it is impossible that fragments have fallen in Portugal.

Also, meteorites are not 'hot' when they reach the ground. So they do not cause burn-holes. Also, if it were meteorites, these should still be there - there should be meteorite stones lying in or very close to the holes!

I cannot readily explain what has caused these holes, but we can safely exclude meteorites, and certainly meteorites from the January 4 fireball for the reasons above. Can they exclude that this is due to an aircraft? E.g. something hot dripping down from an aircraft?


Do Lars da Dinamarca, que tem uma mulher brasileira que escreveu o mail.

Eu acho que voce esta certo, pois estas marcas que me mandaste por email não é um meteorito. Pois pequenos meteoritos não são quentes quando caem sobre a terra. E por isso não fazem marcas como esta numa pista de aviacão. Quando caem sobre a terra com a velocidade da atmosfera e são pequenas (pedras) onde são juntadas.
Uma grande quantidade de meteoritos quando caem sobre a terra, caem como uma forma mais ou menos oval. Você não acha que algum objeto caiu de um avião?


Markku Nissinen da meteor section of Astronomial Associaton Ursa (Filândia)

I do not think that the marks shown are made by meteorites.

Meteorites are not hot at all when they fell to the earth and
their kinetic energy is not so big. If loud sonic booms
or other sounds were not observed in the nearby areas
(they are very common in case of meteorite fall) the
probability that high kinetic energy meteorites were falling
to the runway is really nearly zero. And there seems not
to be any hint of meteorite material in the pictures at all.

I am sure that you should have positively identified
meteorite material if that was present at all, when looking
the meteorite it is almost every time easy to make
positive identification just by looking the object.

And the fact that there are not any marks in other areas
than the runway strongly points to the marks having
to do something with aeroplanes operating the
runway, but I don't have any clues that what has been
causing the marks. I cannot even guess anything by
looking the pictures only.

 
posted by Jose Matos at 17:20 | Permalink |


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