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(meteorobs) FWD from this week's Cambridge Conference
Thought this might be of interest. So exactly what data DOES the meteorics
community have on the correlation between (photographic/video) meteor colors
and composition? Or velocity? Or incidence angle? Or atmospheric heights?
Curious Lew
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(2) WEST TEXAS CRUDE
From: Duncan Steel <dis@a011.aonedot net.au>
Meteorite fall in West Texas story.
>An astronomer at the McDonald Observatory theorized that the meteorite
>could have contained copper among its metallic ores, explaining the
>greenish tint to its glow as it passed over Midland.
Why, just because church roofs are green? For high altitude meteors the
green light often reported is, I believe, due to an atomic oxygen
transition. I do not have enough information about this fireball to
make any further comment about the light emission.
>Monahans is about 60 miles southwest of Odessa.
...which is of course the location of the first definitely-proven
terrestrial impact crater, named for the town. It became accepted as an
impact scar in the 1920's due to its association with meteoritic iron.
Although Meteor (Barringer) Crater had been suggested as being an impact
crater earlier, it took a long time for this to be accepted by any but a few
'crazies.'
Duncan