[meteorite-list] ON POSSIBLE SOLAR ORIGIN OF METEORITIC NANODIAMONDS
Hello Listers, The next few days ill be posting articles that pertain to the topic of nanodiamonds. First up: ON POSSIBLE SOLAR ORIGIN OF METEORITIC NANODIAMONDS Galina K. Ustinova ,Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow V-334, 119991 Russia; E-mail: ustin...@dubna.net.ru The laboratory experiments on synthesis of artificial nanodiamonds demonstrate an extremely large spectrum of the physical and chemical conditions for realization of this process. Indeed, the synthetic nanodiamonds are obtained in the processes of detonation synthesis at high pressure and temperature, as well as by low-pressure condensation being similar to chemical vapor deposition at moderate temperatures (CVD-techniques), and as well as by irradiation of carbonaceous materials with laser, intensive ultraviolet radiation or high-energy particles [1]. In view of the variety of the admissible astrophysical conditions, one may anticipate ubiquitous distributions of nanodiamonds in cosmos. Thus, the observations of the interstellar extinction testify to the fact that up to 10% of the interstellar carbon could be bound up in the interstellar diamond [2]. Nanodiamonds with the lognormal size distribution being similar to that for meteoritic ones are observed in circumstellar disks in the systems of Herbig emission stars of HD97048 and Elias 1 [3], in the carbon-enriched protoplanetary nebulae [4] an n in the interplanetary dust [5].. Of course, it cannot be excluded that, somewhere at the periphery of the collapsing protosolar nebula, some presolar grains of other generation could sur-vive and even preserve the noble gases of their astro-physical sources. According to the estimates of [12], the relative abundance in chondrites of presolar nanodiamonds generated in the atmospheres of AGB stars amounts to ~1% only, and that d at SNII explosions is < 0.1%. http://www.lpi.usra.edu/meetings/lpsc2010/pdf/1050.pdf Shawn Alan eBayshop http://shop.ebay.com/photophlow/m.html?_nkw=&_armrs=1&_from=&_ipg=&_trksid=p4340 __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] large fireball? Texas, Alabama, Florida 14MAY2010
Dear List, Anyone with any capture of these events? Best Regards, Dirk Ross...Tokyo Milton, Florida blue green meteorite nw florida may 14, 2010 Fort Rucker, Alabama fireball may 14, 2010 __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Water Was Present During Birth of Earth
http://www.sciencedaily.com/releases/2010/05/100513143457.htm Water Was Present During Birth of Earth Tiny variations in the isotopic composition of silver in meteorites and Earth rocks are helping scientists put together a timetable of how our planet was assembled beginning 4.568 billion years ago. The new study, published in the journal Science, indicates that water and other key volatiles may have been present in at least some of Earth's original building blocks, rather than acquired later from comets, as some scientists have suggested. Compared to the Solar System as a whole, Earth is depleted in volatile elements, such as hydrogen, carbon, and nitrogen, which likely never condensed on planets formed in the inner, hotter, part of the Solar System. Earth is also depleted in moderately volatile elements, such as silver. "A big question in the formation of the Earth is when this depletion occurred," says co-author Richard Carlson of the Carnegie Institution for Science's Department of Terrestrial Magnetism. "That's where silver isotopes can really help." Silver has two stable isotopes, one of which, silver-107 was produced in the early Solar System by the rapid radioactive decay of palladium-107. Palladium-107 is so unstable that virtually all of it decayed within the first 30 million years of the Solar System's history. Silver and palladium differ in their chemical properties. Silver is the more volatile of the two, whereas palladium is more likely to bond with iron. These differences allowed the Carnegie researchers, which included Carlson, lead author Maria Schönbächler (a former Carnegie Institution postdoctoral scientist now at the University of Manchester), Erik Hauri, Mary Horan, and Tim Mock to use the isotopic ratios in primitive meteorites and rocks from Earth's mantle to determine the history of Earth's volatiles relative to the formation of Earth's iron core. Other evidence, specifically from hafnium and tungsten isotopes, indicates that the core formed between 30 to 100 million years after the origin of the Solar System. "We found that the silver isotope ratios in mantle rocks from the Earth exactly matched those in primitive meteorites," says Carlson. "But these meteorites have compositions that are very volatile-rich, unlike the Earth, which is volatile-depleted." The silver isotopes also presented another riddle, suggesting that the Earth's core formed about 5-10 million years after the origin of the Solar System, much earlier than the date from the hafnium-tungsten results. The group concludes that these contradictory observations can be reconciled if Earth first accreted volatile-depleted material until it reached about 85% of its final mass and then accreted volatile-rich material in the late stages of its formation, about 26 million years after the Solar System's origin. The addition of volatile-rich material could have occurred in a single event, perhaps the giant collision between the proto-Earth and a Mars-sized object thought to have ejected enough material into Earth orbit to form the Moon. The results of the study support a 30-year old model of planetary growth called "heterogeneous accretion," which proposes that the Earth's building blocks changed in composition as the planet accreted. Carlson adds that it would have taken just a small amount of volatile-rich material similar to primitive meteorites added during the late stages of Earth's accretion to account for all the volatiles, including water, on the Earth today. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Rocks from Space Picture of the Day - May 15, 2010
http://www.rocksfromspace.org/May_15_2010.html --- __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] FW: re. $ LOL, Can't even pay for a BD cake -- P.S.
Dear Listees: And while we're talking about the big party from this past gem show, I've been extremely remiss in not thanking everyone (in addition to Twink) who participated and made it such a wonderful event for us. I've been a little busy with other things : ) I know a lot of you went out of your way to accommodate the extensive filming that was going on. Sorry about the floodlights on the street : ) Special thanks go out to List members Bob Holmes, Mike Jensen, Bill Jensen, Qynne Arnold, Leigh Anne DelRay, Maria Haas, and Chicago Steve who helped us with the stage show at the party and a million other things, as well as the owners of the fabulous Sky Bar Tucson. See you next year! Geoff N. www.aerolite.org www.facebook.com/AeroliteMeteorites www.meteoritemen.com __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] (Ad) A few Franconia Irons Left & Priced reduced on Sikhote Oriented
Thanks all for your purchases of my irons almost got enough $$ for my upcoming trip to Wyoming to film a show on fossil digging. There are a few irons left and one 104.5 gr Sikhote Alin Oriented I drop the price on this one. Just go to my website http://www.mineralexpeditions.com click on meteorites for sale for pictures and prices. Thanks Tim G __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] FW: re. $ LOL, Can't even pay for a BD cake
Gary Chase wrote: And, I saw no mention of the producers in the email. When did they start buying BD cakes for an over 10 year old event? Actually it was the 11th annual party and production decided to film it for possible inclusion in an upcoming episode of "Meteorite Men," so they offered to pick up the tab for the cake. In case you've never had a job, it's sometimes a little time consuming to get receipts processed by large companies. Our 150+ friends who were at the party seemed to have a blast and -- as always -- Twink did a lovely job taking care of the cake for us. Thank you Twink! Gary, do you really not have anything more interesting going on in your life than worrying about an overdue bill for somebody's else's birthday cake? That sounds pretty depressing to me. We have some freelance work here in the office if you need something constructive to do. Geoff N. www.aerolite.org www.facebook.com/AeroliteMeteorites www.meteoritemen.com __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] FW: re. $ LOL, Can't even pay for a BD cake
On Fri, 14 May 2010 17:07:56 -0700, you wrote: >No one said anything about ripping Twink off, but three months to pay for a BD >cake says a lot about paying bills on time. Especially since Steve is famous for being a millionare. http://blogs.discovermagazine.com/badastronomy/2010/04/16/wisconsin-meteor-update-meteorite-found/#comment-260301 Which, I'm sure, comes as a suprise to Steve. :-) __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] FW: re. $ LOL, Can't even pay for a BD cake
"This tread should stop immediately" ? Who made you boss? I think, and based upon my private emails, it is good that this appeared on the list, even accidently. Lets see the true colors of list members that hold themselves out to be considered as "gods of the meteorite world" Re-read the original email, oh wise one. It ONLY went to the list so your "reply all" theory does not work here. And, I saw no mention of the producers in the email. When did they start buying BD cakes for an over 10 year old event? Are they now responsible for all expenses including toilet paper. No one said anything about ripping Twink off, but three months to pay for a BD cake says a lot about paying bills on time. Your Surfing buddy. Gary > Date: Fri, 14 May 2010 16:35:21 -0700 > From: mlbl...@cox.net > To: warren3...@hotmail.com; meteorite-list@meteoritecentral.com > Subject: Re: [meteorite-list] FW: re. $ LOL, Can't even pay for a BD cake > > Hi All, > This thread should stop immediately. > Twink stated her intention was to post only to Steve and > The post to the list was an error (If one hits "Return" it goes > Only to the one who posted to the list. If one inadvertently > Hits "Return All" then it goes to the writer and to the list). > Twink stated the falderal with the producers of METEORITE MEN > Had been resolved (It was not specifically Steve's responsibility - he > Merely placed the request and later had to facilitated payment owed > by the producers). > There was no intention to rip off anyone nor to attack another > list member, there is no "dirty laundry" in the first place (production > companies often have to be reminded as a number of people frequently > Assume someone else in the company has taken care of this or that). > No one was out of line - either Steve or Twink. Case closed. > Nothing to look at here, folks. Please keep the traffic moving. > Michael > > > On 5/14/10 4:10 PM, "Warren Sansoucie" wrote: > >> >> >> >> >> >> >> >> >> >> >> This looks like more 'dirty under-britches' being aired in public. Shouldn't >> the attempt to humiliate a list member be OFF LIST? >> >> Warren Sansoucie >> >>> From: garych...@live.com >>> To: meteorite-list@meteoritecentral.com >>> Date: Fri, 14 May 2010 09:55:18 -0700 >>> Subject: Re: [meteorite-list] re. $ LOL, Can't even pay for a BD cake >>> >>> >>> I guess being a big TV star does not pay as much as it used to. >>> >>> Anyone else have any payment or shipment problems? >>> >>> Gary >>> >>> >>> From: larrytwinkmon...@comcast.net To: meteorite-list@meteoritecentral.com Date: Thu, 13 May 2010 11:17:54 -0700 Subject: [meteorite-list] re. $ Hi Steve, I am wondering when I should expect my check for the birthday bash cake, plates, napkins and forks which I was asked to buy. And the cake was not just a simple phone call to the store. As you may remember the logo was sent to me by e mail, I printed it in color, took it to the baker at Safeway along with an etched slice of Brenham to show him how it should look if possible, went to pick the cake up and then delivered it to the Sky Bar. It was fun and I enjoyed doing it so do not understand the problem with my reimbursement which was agreed when I said I would do it. (I then the next night picked up my auction Gold Basin cake I paid for and took it out there as I have done for years.) When I was at Geoff's a few weeks ago I mentioned it to him and he said he was not aware of it so therefore I keep asking you. Twink __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list >>> _ >>> The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with >>> Hotmail. >>> http://www.windowslive.com/campaign/thenewbusy?tile=multicalendar&ocid=PID283 >>> 26::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_5 >>> __ >>> Visit the Archives at >>> http://www.meteoritecentral.com/mailing-list-archives.html >>> Meteorite-list mailing list >>> Meteorite-list@meteoritecentral.com >>> http://six.pairlist.net/mailman/listinfo/meteorite-list >> __ >> Visit the Archives at >> http://www.meteoritecentral.com/mailing-list-archives.html >> Meteorite-list mailing list >> Meteorite-list@meteoritecentral.com >> http://six.pairlist.net/mailman/listinfo/meteorite-list > > > __ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/m
Re: [meteorite-list] FW: re. $ LOL, Can't even pay for a BD cake
Hi All, This thread should stop immediately. Twink stated her intention was to post only to Steve and The post to the list was an error (If one hits "Return" it goes Only to the one who posted to the list. If one inadvertently Hits "Return All" then it goes to the writer and to the list). Twink stated the falderal with the producers of METEORITE MEN Had been resolved (It was not specifically Steve's responsibility - he Merely placed the request and later had to facilitated payment owed by the producers). There was no intention to rip off anyone nor to attack another list member, there is no "dirty laundry" in the first place (production companies often have to be reminded as a number of people frequently Assume someone else in the company has taken care of this or that). No one was out of line - either Steve or Twink. Case closed. Nothing to look at here, folks. Please keep the traffic moving. Michael On 5/14/10 4:10 PM, "Warren Sansoucie" wrote: > > > > > > > > > > > This looks like more 'dirty under-britches' being aired in public. Shouldn't > the attempt to humiliate a list member be OFF LIST? > > Warren Sansoucie > >> From: garych...@live.com >> To: meteorite-list@meteoritecentral.com >> Date: Fri, 14 May 2010 09:55:18 -0700 >> Subject: Re: [meteorite-list] re. $ LOL, Can't even pay for a BD cake >> >> >> I guess being a big TV star does not pay as much as it used to. >> >> Anyone else have any payment or shipment problems? >> >> Gary >> >> >> >>> From: larrytwinkmon...@comcast.net >>> To: meteorite-list@meteoritecentral.com >>> Date: Thu, 13 May 2010 11:17:54 -0700 >>> Subject: [meteorite-list] re. $ >>> >>> Hi Steve, >>> >>> I am wondering when I should expect my check for the birthday bash cake, >>> plates, napkins and forks which I was asked to buy. >>> >>> And the cake was not just a simple phone call to the store. As you may >>> remember the logo was sent to me by e mail, I printed it in color, took it >>> to the baker at Safeway along with an etched slice of Brenham to show him >>> how it should look if possible, went to pick the cake up and then delivered >>> it to the Sky Bar. It was fun and I enjoyed doing it so do not understand >>> the problem with my reimbursement which was agreed when I said I would do >>> it. (I then the next night picked up my auction Gold Basin cake I paid for >>> and took it out there as I have done for years.) >>> >>> When I was at Geoff's a few weeks ago I mentioned it to him and he said he >>> was not aware of it so therefore I keep asking you. >>> >>> Twink >>> >>> __ >>> Visit the Archives at >>> http://www.meteoritecentral.com/mailing-list-archives.html >>> Meteorite-list mailing list >>> Meteorite-list@meteoritecentral.com >>> http://six.pairlist.net/mailman/listinfo/meteorite-list >> _ >> The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with >> Hotmail. >> http://www.windowslive.com/campaign/thenewbusy?tile=multicalendar&ocid=PID283 >> 26::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_5 >> __ >> Visit the Archives at >> http://www.meteoritecentral.com/mailing-list-archives.html >> Meteorite-list mailing list >> Meteorite-list@meteoritecentral.com >> http://six.pairlist.net/mailman/listinfo/meteorite-list > __ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] FW: re. $ LOL, Can't even pay for a BD cake
This looks like more 'dirty under-britches' being aired in public. Shouldn't the attempt to humiliate a list member be OFF LIST? Warren Sansoucie > From: garych...@live.com > To: meteorite-list@meteoritecentral.com > Date: Fri, 14 May 2010 09:55:18 -0700 > Subject: Re: [meteorite-list] re. $ LOL, Can't even pay for a BD cake > > > I guess being a big TV star does not pay as much as it used to. > > Anyone else have any payment or shipment problems? > > Gary > > > >> From: larrytwinkmon...@comcast.net >> To: meteorite-list@meteoritecentral.com >> Date: Thu, 13 May 2010 11:17:54 -0700 >> Subject: [meteorite-list] re. $ >> >> Hi Steve, >> >> I am wondering when I should expect my check for the birthday bash cake, >> plates, napkins and forks which I was asked to buy. >> >> And the cake was not just a simple phone call to the store. As you may >> remember the logo was sent to me by e mail, I printed it in color, took it >> to the baker at Safeway along with an etched slice of Brenham to show him >> how it should look if possible, went to pick the cake up and then delivered >> it to the Sky Bar. It was fun and I enjoyed doing it so do not understand >> the problem with my reimbursement which was agreed when I said I would do >> it. (I then the next night picked up my auction Gold Basin cake I paid for >> and took it out there as I have done for years.) >> >> When I was at Geoff's a few weeks ago I mentioned it to him and he said he >> was not aware of it so therefore I keep asking you. >> >> Twink >> >> __ >> Visit the Archives at >> http://www.meteoritecentral.com/mailing-list-archives.html >> Meteorite-list mailing list >> Meteorite-list@meteoritecentral.com >> http://six.pairlist.net/mailman/listinfo/meteorite-list > _ > The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with > Hotmail. > http://www.windowslive.com/campaign/thenewbusy?tile=multicalendar&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_5 > __ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Fireball Temperature?
Hi Eric- It seems likely that in most cases, a burn of just a few seconds is sufficient to reduce more than 95% of the original mass to dust and gas. Of course, you need to define what the original mass actually is, since scale effects will become important as the mass increases. Also, a lot depends on how the original mass breaks up- and with peak forward ram pressures measured in tens or hundreds of MPa, most bodies do break up. That exposes much more surface area than just the outside of the original body, and accelerates the loss of material to ablation. Chris * Chris L Peterson Cloudbait Observatory http://www.cloudbait.com - Original Message - From: "Meteorites USA" To: Sent: Friday, May 14, 2010 3:59 PM Subject: Re: [meteorite-list] Fireball Temperature? Hi Laurence, Thanks for the response! I'm humbled by your participation on this question... I appreciate it. I do have another question... ;) of course. Given the extreme temperature, and the massive pressure exerted on the meteoroid body while in it's incandescent state (ablation phase?), and taking into account the very short duration of this "meteor" state phenomena, would you agree that a 5-10 second "burn" would be sufficient enough to ablate 90% of a larger body's original mass? Assuming of course the body is an ordinary stone type meteoroid. It just seems like such a very short period of time for something to sublimate into gases and physically ablate into such a small fraction of it's original mass. Regards, Eric __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Fireball Temperature?
Hi Laurence, Thanks for the response! I'm humbled by your participation on this question... I appreciate it. I do have another question... ;) of course. Given the extreme temperature, and the massive pressure exerted on the meteoroid body while in it's incandescent state (ablation phase?), and taking into account the very short duration of this "meteor" state phenomena, would you agree that a 5-10 second "burn" would be sufficient enough to ablate 90% of a larger body's original mass? Assuming of course the body is an ordinary stone type meteoroid. It just seems like such a very short period of time for something to sublimate into gases and physically ablate into such a small fraction of it's original mass. Regards, Eric On 5/14/2010 9:43 AM, Laurence Garvie wrote: I just had a quick look at the paper by Popova, Meteoroid Ablation models (2004) Earth, Moon, and Planets, vol. 95, 303-319, and their spectral data from meteorites indicate that the brightness temperatures of the vapor are around 4000-6000K. Laurence CMS ASU -- Message: 2 Date: Thu, 13 May 2010 15:57:27 -0700 From: Meteorites USA Subject: [meteorite-list] Fireball Temperature? To: Meteorite-list Message-ID: <4bec83d7.3070...@meteoritesusa.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Anyone know how hot a large meteor/fireball gets? Regards, Eric Wichman Meteorites USA -- Message: 3 Date: Thu, 13 May 2010 19:06:57 EDT From: geo...@aol.com Subject: Re: [meteorite-list] Fireball Temperature? To: meteorite-list@meteoritecentral.com Message-ID: Content-Type: text/plain; charset="US-ASCII" Anyone know how hot a large meteor/fireball gets?<< At least the melting point of iron, which is 2800*F. geozay -- Message: 4 Date: Thu, 13 May 2010 16:10:47 -0700 (PDT) From: Steve Witt Subject: Re: [meteorite-list] Fireball Temperature? To: Meteorite-list ,Meteorites USA Message-ID: <162132.99630...@web56408.mail.re3.yahoo.com> Content-Type: text/plain; charset=us-ascii Eric, A quick check of O. Richard Norton's Rocks from Space puts it >3000 degrees F. Regards, Steve Steve Witt IMCA #9020 http://imca.cc/ --- On Thu, 5/13/10, Meteorites USA wrote: From: Meteorites USA Subject: [meteorite-list] Fireball Temperature? To: "Meteorite-list" Date: Thursday, May 13, 2010, 5:57 PM Anyone know how hot a large meteor/fireball gets? Regards, Eric Wichman Meteorites USA __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] The Last Four Weeks
Hello, The time in the field went way to fast! It was one of the most enjoyable hunts that I can remember and I am going through withdraw from not being there and walking 20 miles a day! Best Wishes Michael Cottingham > Date: Fri, 14 May 2010 14:30:27 -0400 > From: fallingfus...@wi.rr.com > To: meteorite-list@meteoritecentral.com > Subject: [meteorite-list] The Last Four Weeks > > Hey all.. > > Where have the last four weeks gone? Its hard to believe that it's been a > full month since the now-famous Wisconsin fireball dropped a little black > gold for us "meteorite aficionados" atop the quaint farming communities of > Iowa and Grant counties. Whether or not one went home empty handed, it will > be an experience that many, including myself, will never forget. (..Now if > only I would have seen that darn bolide! lol) > > Kind regards, > > Ryan > __ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list _ Hotmail has tools for the New Busy. Search, chat and e-mail from your inbox. http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_1 __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] The Last Four Weeks
Hey all.. Where have the last four weeks gone? Its hard to believe that it's been a full month since the now-famous Wisconsin fireball dropped a little black gold for us "meteorite aficionados" atop the quaint farming communities of Iowa and Grant counties. Whether or not one went home empty handed, it will be an experience that many, including myself, will never forget. (..Now if only I would have seen that darn bolide! lol) Kind regards, Ryan __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Fireball temperatures
Hello Listers, Here is the article to Jiri Borovicka fireball temp analysis called A fireball spectrum analysis Abstract: A grating spectrum (45 A/mm) of a fireball of -9th absolute magnitude and velocity of 18 km/s has been analyzed. A new simple model for meteor spectra has been developed. Thermal equilibrium is assumed and self-absorption is taken into account. The free parameters of the model are the temperature, the column density of Fe I atoms, the relative abundances of other atoms, and the visible surface area of meteor radiating volume. The synthetic spectrum based on this model was computed and compared with the observed spectrum. The values of the free parameters were calculated by the least squares method. Then the abundances of neutral atoms were corrected for ionization to obtain the true ratios of chemical elements. The abundances of Fe, Na, Mg, Ca, Ti, Cr, Mn, Ni, and Al were determined such way. The computations were performed independently at 43 points along the fireball trajectory between heights of 57-35 km. It was found that thermal equilibrium was relatively well satisfied at the heights below 50 km. The temperature varied on the range 3500-4700 K. But there is also a spectral component with temperature of about 10,000 K in the spectrum. This component consists of a few lines of Mg II, Si II and Fe II and originates probably in the shock wave. The chemical composition of the radiating gas varied along the fireball path and does not reflect the chemical composition of the meteoroid itself. The refractory elements (Al, Ca, Ti) are underabundant in the gas. The material was ablated by melting in liquid phase and then evaporated in surrounding hot gas, but the refractory (low melting) elements were evaporated incompletely or too late. About 95% of the hot gas around the meteoroid were formed by the air. http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=1993A%26A...279..627B&db_key=AST&page_ind=0&data_type=GIF&type=SCREEN_VIEW&classic=YES&high=4bb95d172c09137 Shawn Alan eBaystore http://shop.ebay.com/photophlow/m.html?_nkw=&_armrs=1&_from=&_ipg=&_trksid=p4340 [meteorite-list] Fireball temperaturesEd Majden epmajden at shaw.ca Fri May 14 12:49:19 EDT 2010 Previous message: [meteorite-list] Fireball Temperature? Next message: [meteorite-list] off topic beads of charity Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] See: http://folk.ntnu.no/ltheen/meteor/meteor_physical.html Do a search with "google" "for meteor fireball temperatures". There are several papers related to this topic. >From a spectroscopic point of view, Jiri Borovicka suggests that the temperature of the main component is around 4500 K and the second component is around 10,000 K (Borovicka 1994) Planetary Space Sci, 42, 145-150. Ed Majden - AMS Meteor Spectroscopy Courtenay, B.C. Canada. Previous message: [meteorite-list] Fireball Temperature? Next message: [meteorite-list] off topic beads of charity Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] More information about the Meteorite-list mailing list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Wisconsin Material... Clarification.
Hello, Just a clarification of a previous email AD. I do welcome trade thoughts and Best Offers. However, the Best Offers have to be done in a short period of time, so do not wait too long. I usually let the Best Offers build up for a few days and then make my choice. Since I will not include a link in this email...hopefully it will not be thought of as a second ad. Best Wishes Michael Cottingham _ The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with Hotmail. http://www.windowslive.com/campaign/thenewbusy?tile=multicalendar&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_5 __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Fireball Temperature?
Wow, Dr. Garvie , Thank you for posting to this list again. We can always use your great mind and input. Please keep it up. Carl -- Carl or Debbie Esparza Meteoritemax Laurence Garvie wrote: > I just had a quick look at the paper by Popova, Meteoroid Ablation > models (2004) Earth, Moon, and Planets, vol. 95, 303-319, and their > spectral data from meteorites indicate that the brightness > temperatures of the vapor are around 4000-6000K. > > Laurence > CMS > ASU > > > -- > > > > Message: 2 > > Date: Thu, 13 May 2010 15:57:27 -0700 > > From: Meteorites USA > > Subject: [meteorite-list] Fireball Temperature? > > To: Meteorite-list > > Message-ID: <4bec83d7.3070...@meteoritesusa.com> > > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > > > Anyone know how hot a large meteor/fireball gets? > > > > Regards, > > Eric Wichman > > Meteorites USA > > > > > > -- > > > > Message: 3 > > Date: Thu, 13 May 2010 19:06:57 EDT > > From: geo...@aol.com > > Subject: Re: [meteorite-list] Fireball Temperature? > > To: meteorite-list@meteoritecentral.com > > Message-ID: > > Content-Type: text/plain; charset="US-ASCII" > > > >>> Anyone know how hot a large meteor/fireball gets?<< > > > > At least the melting point of iron, which is 2800*F. > > geozay > > > > > > > > -- > > > > Message: 4 > > Date: Thu, 13 May 2010 16:10:47 -0700 (PDT) > > From: Steve Witt > > Subject: Re: [meteorite-list] Fireball Temperature? > > To: Meteorite-list , Meteorites > > USA > > Message-ID: <162132.99630...@web56408.mail.re3.yahoo.com> > > Content-Type: text/plain; charset=us-ascii > > > > Eric, > > > > A quick check of O. Richard Norton's Rocks from Space puts it >3000 > > degrees F. > > > > Regards, > > Steve > > > > > > Steve Witt > > IMCA #9020 > > http://imca.cc/ > > > > > > --- On Thu, 5/13/10, Meteorites USA wrote: > > > >> From: Meteorites USA > >> Subject: [meteorite-list] Fireball Temperature? > >> To: "Meteorite-list" > >> Date: Thursday, May 13, 2010, 5:57 PM > >> Anyone know how hot a large > >> meteor/fireball gets? > >> > >> Regards, > >> Eric Wichman > >> Meteorites USA > >> __ > >> Visit the Archives at > >> http://www.meteoritecentral.com/mailing-list-archives.html > >> Meteorite-list mailing list > >> Meteorite-list@meteoritecentral.com > >> http://six.pairlist.net/mailman/listinfo/meteorite-list > >> > > > > > > > > > > > > __ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Fireball Temperature?
I just had a quick look at the paper by Popova, Meteoroid Ablation models (2004) Earth, Moon, and Planets, vol. 95, 303-319, and their spectral data from meteorites indicate that the brightness temperatures of the vapor are around 4000-6000K. Laurence CMS ASU -- Message: 2 Date: Thu, 13 May 2010 15:57:27 -0700 From: Meteorites USA Subject: [meteorite-list] Fireball Temperature? To: Meteorite-list Message-ID: <4bec83d7.3070...@meteoritesusa.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Anyone know how hot a large meteor/fireball gets? Regards, Eric Wichman Meteorites USA -- Message: 3 Date: Thu, 13 May 2010 19:06:57 EDT From: geo...@aol.com Subject: Re: [meteorite-list] Fireball Temperature? To: meteorite-list@meteoritecentral.com Message-ID: Content-Type: text/plain; charset="US-ASCII" Anyone know how hot a large meteor/fireball gets?<< At least the melting point of iron, which is 2800*F. geozay -- Message: 4 Date: Thu, 13 May 2010 16:10:47 -0700 (PDT) From: Steve Witt Subject: Re: [meteorite-list] Fireball Temperature? To: Meteorite-list , Meteorites USA Message-ID: <162132.99630...@web56408.mail.re3.yahoo.com> Content-Type: text/plain; charset=us-ascii Eric, A quick check of O. Richard Norton's Rocks from Space puts it >3000 degrees F. Regards, Steve Steve Witt IMCA #9020 http://imca.cc/ --- On Thu, 5/13/10, Meteorites USA wrote: From: Meteorites USA Subject: [meteorite-list] Fireball Temperature? To: "Meteorite-list" Date: Thursday, May 13, 2010, 5:57 PM Anyone know how hot a large meteor/fireball gets? Regards, Eric Wichman Meteorites USA __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] re. $ LOL, Can't even pay for a BD cake
I guess being a big TV star does not pay as much as it used to. Anyone else have any payment or shipment problems? Gary > From: larrytwinkmon...@comcast.net > To: meteorite-list@meteoritecentral.com > Date: Thu, 13 May 2010 11:17:54 -0700 > Subject: [meteorite-list] re. $ > > Hi Steve, > > I am wondering when I should expect my check for the birthday bash cake, > plates, napkins and forks which I was asked to buy. > > And the cake was not just a simple phone call to the store. As you may > remember the logo was sent to me by e mail, I printed it in color, took it > to the baker at Safeway along with an etched slice of Brenham to show him > how it should look if possible, went to pick the cake up and then delivered > it to the Sky Bar. It was fun and I enjoyed doing it so do not understand > the problem with my reimbursement which was agreed when I said I would do > it. (I then the next night picked up my auction Gold Basin cake I paid for > and took it out there as I have done for years.) > > When I was at Geoff's a few weeks ago I mentioned it to him and he said he > was not aware of it so therefore I keep asking you. > > Twink > > __ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > _ The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with Hotmail. http://www.windowslive.com/campaign/thenewbusy?tile=multicalendar&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_5 __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] off topic beads of charity
Nice story. Another reason to visit Tucson. http://azstarnet.com/news/local/article_24b8f740-ad39-5ec2-9457-8f4bded7866f.html -- Carl or Debbie Esparza Meteoritemax __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Fireball temperatures
See: http://folk.ntnu.no/ltheen/meteor/meteor_physical.html Do a search with "google" "for meteor fireball temperatures". There are several papers related to this topic. From a spectroscopic point of view, Jiri Borovicka suggests that the temperature of the main component is around 4500 K and the second component is around 10,000 K (Borovicka 1994) Planetary Space Sci, 42, 145-150. Ed Majden - AMS Meteor Spectroscopy Courtenay, B.C. Canada. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] wisconsin- Sat and Sunday
Hi all If anyone is going to be in WI area. Today ,sat or sun- pls call. I would be happy to share my data and map as it is made manually not emailable. I am meeting up with 2 people as of now plus 4 who are there and if possible we can all meet up and look together in the eastern, middle. And western end of the fall. Metal detectors may be helpful to cover one area intensively. Atul kumar 219 308 8282 Sent from my Verizon Wireless BlackBerry -Original Message- From: steve arnold Date: Fri, 14 May 2010 04:19:23 To: Subject: [meteorite-list] wisconsin here I come Hi list.Well it's supposed to be upper 60's and 100% sun tomorrow,so hunting for this fall should not be a problem. Trying to find them will be. Its good to see alot of the other hunters are now gone and the hoopla is over. I'm glad now I know the aeras where to hunt and been given better coordinates by people who have been there. Well the invitation is still open if anyone wants to join for an really early ride up. 5 am! I also look forward to seeing anyone else who is still up there.I will take lots of pics.Have a great day. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] wisconsin here I come
Hi list.Well it's supposed to be upper 60's and 100% sun tomorrow,so hunting for this fall should not be a problem. Trying to find them will be. Its good to see alot of the other hunters are now gone and the hoopla is over. I'm glad now I know the aeras where to hunt and been given better coordinates by people who have been there. Well the invitation is still open if anyone wants to join for an really early ride up. 5 am! I also look forward to seeing anyone else who is still up there.I will take lots of pics.Have a great day. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
