(meteorobs) Large fireball frequency calculations - Needs updating

[meteoreye at comcast.net]

I do, but it might take me some time to find it. The years prior to 2005 are not well organized; basically just piles of not very chronological issues. I'll put it on my to-do list.
Wayne

-------------- Original message -------------- 
From: Thomas Ashcraft <ashcraft at heliotown.com> 

> There is an article on this subject in NATURE Magazine but it costs $32. 
> to access. The abstract is here: 
> 
> http://www.nature.com/nature/journal/v420/n6913/full/nature01238.html 
> 
> Does anyone have access to this article who can post a synopsis? 
> 
> I was also told by a Sandia Labs researcher that "Regarding frequency of 
> large events, our satellite sensors detect 50-60 per year globally at 
> –17.5 and brighter. " 
> 
> I am still hoping for more information. 
> 
> Thomas Ashcraft 
> 
> 
> 
> Thomas Ashcraft wrote: 
> > For what it's worth : 
> > 
> > The fireball frequency calculations that are referred at 
> > 
> http://www.spaceweather.com/glossary/frequentfireballs.htm?PHPSESSID=27ojbhs2oli 
> u6kadsjaj0gbhd3 
> > 
> > seem to me to be way underestimated. 
> > 
> > "According to his calculations, fireballs as bright as Venus appear 
> > somewhere on Earth more than 100 times daily. Fireballs as bright as a 
> > quarter Moon occur once every ten days, and fireballs as bright as a 
> > full Moon once every five months." 
> > 
> > My own camera system has captured four -13 magnitude events in the past 
> > year. 
> > 
> > So with fresh data from the various all-sky fireball networks maybe 
> > these calculations can be updated to give a more accurate picture. 
> > 
> > Thomas Ashcraft 
> > New Mexico 
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