Ablation, Flux, and Atmospheric Implications of Meteors Inferred from Stratospheric Aerosol
Single-particle analyses of stratospheric aerosol show that about half of the particles contain 0.5 to 1.0 weight percent meteoritic iron by mass, requiring a total extraterrestrial influx of 8 to 38 gigagrams per year. The sodium/iron ratio in these stratospheric particles is higher and the magnesi...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2001-03, Vol.291 (5509), p.1772-1775 |
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| creator | Cziczo, D. J. Thomson, D. S. Murphy, D. M. |
| description | Single-particle analyses of stratospheric aerosol show that about half of the particles contain 0.5 to 1.0 weight percent meteoritic iron by mass, requiring a total extraterrestrial influx of 8 to 38 gigagrams per year. The sodium/iron ratio in these stratospheric particles is higher and the magnesium/iron and calcium/iron ratios are lower than in chondritic meteorites, implying that the fraction of material that is ablated must lie at the low end of previous estimates and that the extraterrestrial component that resides in the mesosphere and stratosphere is not of chondritic composition. |
| doi_str_mv | 10.1126/science.1057737 |
| format | Article |
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The sodium/iron ratio in these stratospheric particles is higher and the magnesium/iron and calcium/iron ratios are lower than in chondritic meteorites, implying that the fraction of material that is ablated must lie at the low end of previous estimates and that the extraterrestrial component that resides in the mesosphere and stratosphere is not of chondritic composition.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.1057737</identifier><identifier>PMID: 11230690</identifier><identifier>CODEN: SCIEAS</identifier><language>eng</language><publisher>Washington, DC: American Society for the Advancement of Science</publisher><subject>Aerosols ; Analysis ; Atmosphere ; Chemical composition ; Composite particles ; Cosmic dust ; Earth, ocean, space ; Exact sciences and technology ; External geophysics ; Iron ; Magnesium ; Materials ; Meteorites ; Meteors ; Meteors & meteorites ; Particle mass ; Physics of the high neutral atmosphere ; Scientific Concepts ; Space Sciences ; Stratosphere ; Sulfates ; Sulfuric acids</subject><ispartof>Science (American Association for the Advancement of Science), 2001-03, Vol.291 (5509), p.1772-1775</ispartof><rights>Copyright 2001 American Association for the Advancement of Science</rights><rights>2001 INIST-CNRS</rights><rights>COPYRIGHT 2001 American Association for the Advancement of Science</rights><rights>Copyright American Association for the Advancement of Science Mar 2, 2001</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c800t-c3d64f8e41fd8e018c02f649f5ea050bada46f295ed39d338475860aa67c7b8b3</citedby><cites>FETCH-LOGICAL-c800t-c3d64f8e41fd8e018c02f649f5ea050bada46f295ed39d338475860aa67c7b8b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/3082565$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/3082565$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,2870,2871,27903,27904,57995,58228</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=916947$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11230690$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Cziczo, D. 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J.</au><au>Thomson, D. S.</au><au>Murphy, D. M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ablation, Flux, and Atmospheric Implications of Meteors Inferred from Stratospheric Aerosol</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>2001-03-02</date><risdate>2001</risdate><volume>291</volume><issue>5509</issue><spage>1772</spage><epage>1775</epage><pages>1772-1775</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>Single-particle analyses of stratospheric aerosol show that about half of the particles contain 0.5 to 1.0 weight percent meteoritic iron by mass, requiring a total extraterrestrial influx of 8 to 38 gigagrams per year. The sodium/iron ratio in these stratospheric particles is higher and the magnesium/iron and calcium/iron ratios are lower than in chondritic meteorites, implying that the fraction of material that is ablated must lie at the low end of previous estimates and that the extraterrestrial component that resides in the mesosphere and stratosphere is not of chondritic composition.</abstract><cop>Washington, DC</cop><pub>American Society for the Advancement of Science</pub><pmid>11230690</pmid><doi>10.1126/science.1057737</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0036-8075 |
| ispartof | Science (American Association for the Advancement of Science), 2001-03, Vol.291 (5509), p.1772-1775 |
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| source | American Association for the Advancement of Science; Jstor Complete Legacy |
| subjects | Aerosols Analysis Atmosphere Chemical composition Composite particles Cosmic dust Earth, ocean, space Exact sciences and technology External geophysics Iron Magnesium Materials Meteorites Meteors Meteors & meteorites Particle mass Physics of the high neutral atmosphere Scientific Concepts Space Sciences Stratosphere Sulfates Sulfuric acids |
| title | Ablation, Flux, and Atmospheric Implications of Meteors Inferred from Stratospheric Aerosol |
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