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Journal Article
Journal: Geology
Published: 02 May 2019
Geology (2019) 47 (7): 609–612.
...Aaron J. Cavosie; Christian Koeberl Abstract Atmospheric airbursts over Russia at Chelyabinsk in 2013 and Tunguska in 1908 provide dramatic examples of hazards posed by near-Earth objects (NEOs). These two events produced 0.5 and 5 Mt of energy, respectively, which dramatically affected surface...
FIGURES
Journal Article
Journal: Geology
Published: 01 April 2010
Geology (2010) 38 (4): 355–358.
...Adrian L. Melott; Brian C. Thomas; Gisela Dreschhoff; Carey K. Johnson Abstract We find agreement between models of atmospheric chemistry changes from ionization for the A.D. 1908 Tunguska (Siberia region, Russia) airburst event and nitrate enhancement in Greenland Ice Sheet Project 2 (GISP2H...
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Journal Article
Journal: Geology
Published: 01 May 2022
Geology (2022) 50 (5): e550.
.... (2021) interpreted the unusual silicate surface glasses found in the northeastern part of the Atacama Desert as products of a comet airburst that occurred about12 k.y. ago. This interpretation contradicts our conclusions (Roperch et al., 2017). On the basis of abundant field and laboratory evidence, our...
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Simplified pressure-temperature ( P - T ) diagram (modified after  French, ...
Published: 02 May 2019
Figure 3. Simplified pressure-temperature ( P - T ) diagram (modified after French, 1998 ) showing hypothetical P - T paths for both airburst (purple) and crater-forming (red) events; dashed portions indicate different possible trajectories. Note that P indicated for airburst path is greatly
Journal Article
Journal: Geology
Published: 02 November 2021
Geology (2022) 50 (2): 205–209.
... airbursts close to Earth's surface near the end of the Pleistocene. The evidence includes mineral decompositions that require ultrahigh temperatures, dynamic modes of emplacement for the glasses, and entrained meteoritic dust. Thousands of identical meteoritic grains trapped in these glasses show...
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Journal Article
Published: 01 November 2013
Seismological Research Letters (2013) 84 (6): 1021–1025.
... strong shock wave can be generated by explosive fragmentation of the meteoroid in one or several final airbursts ( Ceplecha and Revelle, 2005 ; Edwards et al. , 2008 ). Such disruptions are triggered when the pressure (ram pressure) caused by atmospheric drag exceeds the internal strength...
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Butterfly-shaped area of fallen trees caused by the Tunguska <span class="search-highlight">airburst</span>, supe...
Published: 01 February 2012
F igure 2 Butterfly-shaped area of fallen trees caused by the Tunguska airburst, superimposed onto a map of modern Moscow (population >10 million)
Journal Article
Journal: Geology
Published: 01 May 2022
Geology (2022) 50 (5): e551.
... (northern Chile) glasses, we disagree with their interpretations. In our paper (Schultz et al., 2021), we made interpretations based on the nature of the glass, their occurrences, and sample analyses. Roperch et al. (2017, 2022) rejected the airburst model because they did not find key signatures...
Journal Article
Journal: Elements
Published: 01 April 2018
Elements (2018) 14 (2): 107–112.
... ) Orbital and physical characteristics of meter-scale impactors from airburst observations . Icarus 266 : 96 – 111 Carrillo-Sánchez JD , Nesvorný D , Pokorný P , Janches D , Plane JMC ( 2016 ) Sources of cosmic dust in the Earth's atmosphere . Geophysical Research...
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Series: Geological Society, London, Special Publications
Published: 01 January 2007
DOI: 10.1144/GSL.SP.2007.273.01.15
EISBN: 9781862395213
... impact in northern Argentina around 4000 years ago, along with a separate set of traditions alluding to a possible airburst in the Brazilian Highlands. These impacts apparantly triggered widespread mass fires. There are hints of cosmic impacts in the mythologies for other locations in South America...
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Journal Article
Journal: Elements
Published: 01 February 2012
Elements (2012) 8 (1): 55–60.
...F igure 2 Butterfly-shaped area of fallen trees caused by the Tunguska airburst, superimposed onto a map of modern Moscow (population >10 million) ...
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Journal Article
Published: 24 July 2013
Journal of the Geological Society (2013) 170 (5): 833–847.
... the disrupted brecciated area ( Fig. 7c ) in the outer V9 rinds and from partially melted quartz and zircon. Because both minerals are of small dimension ( c . 2 μm) they may possibly be the result of long-distance transport from the impact or generated from a local airburst. Alternatively, they may be fused...
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Journal Article
Journal: Geology
Published: 01 April 2010
Geology (2010) 38 (4): 383–384.
.... The authors use a two-dimensional atmospheric model to simulate the nitrate and ozone changes associated with the A.D. 1908 Tunguska event where a bolide airburst occurred over Siberia, Russia. The model performs well for the Tunguska event, accurately simulating the nitrate increase of ∼160 ppb observed...
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Journal Article
Published: 01 September 2014
Seismological Research Letters (2014) 85 (5): 1012–1018.
.... E. Saffer A. Silber E. Smets P. Spalding R. E. Spurný P. Tagliaferri E. Uren D. Weryk R. J. Whitaker R. Krzeminski Z. ( 2013 ). A 500‐kiloton airburst over Chelyabinsk and an enhanced hazard from small impactors , Nature 503 , 238 – 241 , doi...
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Journal Article
Journal: Elements
Published: 01 February 2019
Elements (2019) 15 (1): 70–71.
... of Canada's PromoScience program and the Canadian Geological Foundation, together with support from the Department of Earth Sciences and the Faculty of Science at the University of Western Ontario. Brown PG and 32 coauthors ( 2013 ) A 500-kiloton airburst over Chelyabinsk and an enhanced hazard...
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Journal Article
Journal: Geology
Published: 08 August 2018
Geology (2018) 46 (9): 803–806.
... may be valid either in the standard impact crater model ( Stöffler et al., 2002 ), or the alternative airburst model of Wasson (2003) . Our interpretative model for the contrast between MTKs and tektites may be challenged by three alternative ways that objects that have a higher surface/volume...
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Journal Article
Published: 01 October 1967
Bulletin of the Seismological Society of America (1967) 57 (5): 891–911.
... (total charge 95.4 kilograms). The last shot was an airburst pattern consisting of seven 4.5-kilogram charges (total charge 32 kilograms) placed 2.4 meters above and near each shot hole. The airburst shot was used to determine if such a convenient source for repetitive shooting would provide adequate...
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Time development of ammonium and nitrate ions in two samples taken at Young...
Published: 01 April 2010
time is shorter. C: Concentrations in GISP2 high-resolution core. The Tunguska event, thought to be a comet airburst, took place in A.D. 1908. Time resolution of this core is much better than the residence time of nitrate in the atmosphere.
Journal Article
Journal: The Leading Edge
Published: 01 June 2007
The Leading Edge (2007) 26 (6): 700–701.
... discovered on 19 June 2004. It caused alarm in December of that year because orbital calculations indicated a high probability that it would strike Earth in 2029. To put this in perspective, the Tunguska event of 1908 was most likely an airburst of an object no more than 60 m across. This leveled 80 million...
Journal Article
Published: 01 May 2022
Reviews in Mineralogy and Geochemistry (2022) 87 (1): 965–1014.
... body on the surface of the Earth. Thus, they derive from shock metamorphism of existing silicate rocks and sediments. Impacts or airbursts (shock melting caused by a cosmic object exploding in the atmosphere) can be either natural or artificial, and both provide shock markers due to the extreme high...
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