Meteorite Falls and the Fragmentation of Meteorites
In order to understand the fragmentation of objects entering the atmosphere and why some produce more fragments than others, I have searched the Meteoritical Society database for meteorites greater than 20 kilograms that fell in the USA, China, and India. I also studied the video and film records of...
Main Author: | |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
2016
|
Subjects: | |
Online Access: | http://hdl.handle.net/2060/20170009804 |
id |
ftnasantrs:oai:casi.ntrs.nasa.gov:20170009804 |
---|---|
record_format |
openpolar |
spelling |
ftnasantrs:oai:casi.ntrs.nasa.gov:20170009804 2023-05-15T18:30:05+02:00 Meteorite Falls and the Fragmentation of Meteorites Momeni, Daniel Unclassified, Unlimited, Publicly available August 4, 2016 application/pdf http://hdl.handle.net/2060/20170009804 unknown Document ID: 20170009804 http://hdl.handle.net/2060/20170009804 Copyright, Public use permitted CASI Astronomy Lunar and Planetary Science and Exploration ARC-E-DAA-TN34592 SS (Summer Student) Poster Session; 4 Aug. 2016; Moffett Field, CA; United States 2016 ftnasantrs 2019-07-20T23:25:34Z In order to understand the fragmentation of objects entering the atmosphere and why some produce more fragments than others, I have searched the Meteoritical Society database for meteorites greater than 20 kilograms that fell in the USA, China, and India. I also studied the video and film records of 21 fireballs that produced meteorites. A spreadsheet was prepared that noted smell, fireball, explosion, whistling, rumbling, the number of fragments, light, and impact sounds. Falls with large numbers of fragments were examined to look for common traits. These were: the Norton County aubrite, explosion and a flare greater than 100 fragments; the Forest City H5 chondrite explosion, a flare, a dust trail, 505 specimens; the Richardton H5 chondrite explosion and light, 71 specimens; the Juancheng H5 chondrite explosion, a rumbling, a flare, a dust trail,1000 specimens; the Tagish Lake C2 chondrite explosion, flare, dust trail, 500 specimens. I conclude that fragmentation is governed by the following: (1) Bigger meteors undergo more stress which results in more specimens; (2) Harder meteorites also require more force to break them up which will cause greater fragmentation; (3) Force and pressure are directly proportional during falls. General observations made were; (1) Meteorites produce fireballs sooner due to high friction; (2) Meteors tend to explode as well because of high stress; (3) Softer meteorites tend to cause dust trails; (4) Some falls produce light as they fall at high velocity. I am grateful to NASA Ames for this opportunity and Derek Sears, Katie Bryson, and Dan Ostrowski for discussions. Other/Unknown Material Tagish NASA Technical Reports Server (NTRS) Tagish ENVELOPE(-134.272,-134.272,60.313,60.313) Tagish Lake ENVELOPE(-134.233,-134.233,59.717,59.717) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Astronomy Lunar and Planetary Science and Exploration |
spellingShingle |
Astronomy Lunar and Planetary Science and Exploration Momeni, Daniel Meteorite Falls and the Fragmentation of Meteorites |
topic_facet |
Astronomy Lunar and Planetary Science and Exploration |
description |
In order to understand the fragmentation of objects entering the atmosphere and why some produce more fragments than others, I have searched the Meteoritical Society database for meteorites greater than 20 kilograms that fell in the USA, China, and India. I also studied the video and film records of 21 fireballs that produced meteorites. A spreadsheet was prepared that noted smell, fireball, explosion, whistling, rumbling, the number of fragments, light, and impact sounds. Falls with large numbers of fragments were examined to look for common traits. These were: the Norton County aubrite, explosion and a flare greater than 100 fragments; the Forest City H5 chondrite explosion, a flare, a dust trail, 505 specimens; the Richardton H5 chondrite explosion and light, 71 specimens; the Juancheng H5 chondrite explosion, a rumbling, a flare, a dust trail,1000 specimens; the Tagish Lake C2 chondrite explosion, flare, dust trail, 500 specimens. I conclude that fragmentation is governed by the following: (1) Bigger meteors undergo more stress which results in more specimens; (2) Harder meteorites also require more force to break them up which will cause greater fragmentation; (3) Force and pressure are directly proportional during falls. General observations made were; (1) Meteorites produce fireballs sooner due to high friction; (2) Meteors tend to explode as well because of high stress; (3) Softer meteorites tend to cause dust trails; (4) Some falls produce light as they fall at high velocity. I am grateful to NASA Ames for this opportunity and Derek Sears, Katie Bryson, and Dan Ostrowski for discussions. |
format |
Other/Unknown Material |
author |
Momeni, Daniel |
author_facet |
Momeni, Daniel |
author_sort |
Momeni, Daniel |
title |
Meteorite Falls and the Fragmentation of Meteorites |
title_short |
Meteorite Falls and the Fragmentation of Meteorites |
title_full |
Meteorite Falls and the Fragmentation of Meteorites |
title_fullStr |
Meteorite Falls and the Fragmentation of Meteorites |
title_full_unstemmed |
Meteorite Falls and the Fragmentation of Meteorites |
title_sort |
meteorite falls and the fragmentation of meteorites |
publishDate |
2016 |
url |
http://hdl.handle.net/2060/20170009804 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(-134.272,-134.272,60.313,60.313) ENVELOPE(-134.233,-134.233,59.717,59.717) |
geographic |
Tagish Tagish Lake |
geographic_facet |
Tagish Tagish Lake |
genre |
Tagish |
genre_facet |
Tagish |
op_source |
CASI |
op_relation |
Document ID: 20170009804 http://hdl.handle.net/2060/20170009804 |
op_rights |
Copyright, Public use permitted |
_version_ |
1766213570606923776 |