Arid
DOI10.1080/08120099.2011.595428
The Australian Desert Fireball Network: a new era for planetary science
Bland, P. A.1,2,3,4; Spurny, P.5; Bevan, A. W. R.1; Howard, K. T.3; Towner, M. C.2; Benedix, G. K.3; Greenwood, R. C.6; Shrbeny, L.2,5; Franchi, I. A.6; Deacon, G.1; Borovicka, J.5; Ceplecha, Z.5; Vaughan, D.; Hough, R. M.7
通讯作者Bevan, A. W. R.
来源期刊AUSTRALIAN JOURNAL OF EARTH SCIENCES
ISSN0812-0099
出版年2012
卷号59期号:2页码:177-187
英文摘要

Through an international collaboration between Imperial College London, the Ondrejov Observatory in the Czech Republic and the Western Australian Museum, the installation of the Australian Desert Fireball Network in the Nullarbor Region of Western Australia was completed in 2007. Currently, the Network, which is the first to be established in the southern hemisphere, comprises four all-sky autonomous observatories providing precise triangulation of fireball records to constrain pre-atmospheric orbits and fall positions of meteorites over an area of approximately 200 000 km(2). To date, the Network has led to the successful recovery of two observed meteorite falls. The first recovery was three fragments (174, 150 and 14.9 g) of the same meteorite fall recorded on 20 July 2007 at 19 h 13 m 53.2 s+/-0.1 s UT that were found within 100 m of the predicted fall line. Named Bunburra Rockhole, the meteorite is a basaltic achondrite with an oxygen isotopic composition (Delta O-17 = -0.112 parts per thousand) distinguishing it from basaltic meteorites belonging to the Howardite-Eucrite-Diogenite clan thought to be derived from asteroid 4Vesta, and therefore must have come from another differentiated asteroid in the terrestrial planet region. Bunburra Rockhole was delivered to Earth from an Aten-like orbit that was almost entirely contained within the Earth’s orbit. The second recovered fall was detected by the Network on 13 April 2010 and led to the recovery of a 24.54 g meteorite fragment that is yet to be fully described. To date, the Network has recorded similar to 550 fireballs. Records from which precise orbits and trajectories can be determined number similar to 150. In addition to the two recovered falls twelve fireballs are considered to have resulted in meteorite falls. Of these, four are probable falls (10’s-100 g), and five are certain falls (>100 g). Having proved the potential of the Network, ultimately a large dataset of meteorites with orbits will provide the spatial context for the interpretation of meteorite composition that is currently lacking in planetary science.


英文关键词Desert Fireball Network Nullarbor Region observed meteorite falls asteroids Bunburra Rockhole Western Australia South Australia
类型Article
语种英语
国家Australia ; England ; Czech Republic
收录类别SCI-E
WOS记录号WOS:000303564700003
WOS关键词NULLARBOR REGION ; BASALTIC ACHONDRITE ; PARENT BODY ; METEORITES ; VESTA ; EUCRITES ; FLUX ; HOWARDITE ; VESTOIDS ; IBITIRA
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
来源机构Commonwealth Scientific and Industrial Research Organisation
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/171496
作者单位1.Western Australian Museum, Dept Earth & Planetary Sci, Welshpool Dc, WA 6986, Australia;
2.Univ London Imperial Coll Sci Technol & Med, IARC, Dept Earth Sci & Engn, London SW7 2AZ, England;
3.Nat Hist Museum, Dept Mineral, IARC, London SW7 5BD, England;
4.Curtin Univ Technol, Dept Appl Geol, Perth, WA 6845, Australia;
5.Acad Sci, Astron Inst, CZ-25165 Ondrejov, Czech Republic;
6.Open Univ, PSSRI, Milton Keynes MK7 6AA, Bucks, England;
7.CSIRO Earth Sci & Resource Engn, Kensington, WA 6151, Australia
推荐引用方式
GB/T 7714
Bland, P. A.,Spurny, P.,Bevan, A. W. R.,et al. The Australian Desert Fireball Network: a new era for planetary science[J]. Commonwealth Scientific and Industrial Research Organisation,2012,59(2):177-187.
APA Bland, P. A..,Spurny, P..,Bevan, A. W. R..,Howard, K. T..,Towner, M. C..,...&Hough, R. M..(2012).The Australian Desert Fireball Network: a new era for planetary science.AUSTRALIAN JOURNAL OF EARTH SCIENCES,59(2),177-187.
MLA Bland, P. A.,et al."The Australian Desert Fireball Network: a new era for planetary science".AUSTRALIAN JOURNAL OF EARTH SCIENCES 59.2(2012):177-187.
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