Zobrazeno 1 - 10
of 187
pro vyhledávání: '"Adrian L. Melott"'
Publikováno v:
The Astrophysical Journal, Vol 947, Iss 2, p 42 (2023)
The spectacular outbursts of energy associated with supernovae (SNe) have long motivated research into their potentially hazardous effects on Earth and analogous environments. Much of this research has focused primarily on the atmospheric damage asso
Externí odkaz:
https://doaj.org/article/82972a1e14bc4162b0a10db4420da36c
Publikováno v:
International Journal of Astrobiology. 19:349-352
Motivated by the occurrence of a moderately nearby supernova near the beginning of the Pleistocene, possibly as part of a long-term series beginning in the Miocene, we investigated whether nitrate rainout resulting from the atmospheric ionization of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b56512feb5725e0e63436a938b0f5acd
https://doi.org/10.1017/s1473550420000117
https://doi.org/10.1017/s1473550420000117
Autor:
Joanne P. Ballard, Victor Adedeji, Ted E. Bunch, Malcolm A. LeCompte, Brian Thomas, Wendy S. Wolbach, James H. Wittke, Paul Andrew Mayewski, Kenneth B. Tankersley, Adrian L. Melott, Isabel Israde-Alcántara, Siddhartha Mitra, John R. Johnson, William M. Napier, Allen West, Richard B. Firestone, Gunther Kletetschka, Christopher R. Moore, Andrei V. Kurbatov, George Howard, James P. Kennett, William C. Mahaney
Publikováno v:
The Journal of Geology. 128:95-107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0293849666c1dec0084a0af7d1990c1f
https://doi.org/10.1086/706265
https://doi.org/10.1086/706265
The spectacular outbursts of energy associated with supernovae (SNe) have long motivated research into their potentially hazardous effects on Earth and analogous environments. Much of this research has focused primarily on the atmospheric damage asso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca9f60d1a5c03551420dc223b4b1efe9
Publikováno v:
Astrobiology. 19:825-830
Considerable data and analysis support the detection of one or more supernovae (SNe) at a distance of about 50 pc, ∼2.6 million years ago. This is possibly related to the extinction event around that time and is a member of a series of explosions t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::553e3458f464501e91aa481b07f47ebe
https://doi.org/10.1089/ast.2018.1902
https://doi.org/10.1089/ast.2018.1902
Autor:
Adrienne F. Ertel, Bruce S. Lieberman, Brian D. Fields, John Ellis, Brian Thomas, Adrian L. Melott, Jesse A. Miller, Zhenghai Liu, Brian J. Fry
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America
The Late Devonian was a protracted period of low speciation resulting in biodiversity decline, culminating in extinction events near the Devonian-Carboniferous boundary. Recent evidence indicates that the final extinction event may have coincided wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ec4dd73b6683cbb867bec9c7dd1c0b6
http://arxiv.org/abs/2007.01887
http://arxiv.org/abs/2007.01887
We analyze the additional effect on planetary atmospheres of recently detected gamma-ray burst afterglow photons in the range up to 1 TeV. For an Earth-like atmosphere we find that there is a small additional depletion in ozone versus that modeled fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb87b847df41a952b1fddbe46a477e9e
Autor:
James H. Wittke, Adrian L. Melott, Siddhartha Mitra, Ted E. Bunch, Malcolm A. LeCompte, Kenneth B. Tankersley, John R. Johnson, James P. Kennett, David R. Kimbel, Joanne P. Ballard, William M. Napier, Allen West, Timothy A. French, Abigail Maiorana-Boutilier, George Howard, Victor Adedeji, Andrei V. Kurbatov, Brian Thomas, Richard B. Firestone, Christopher R. Moore, Isabel Israde-Alcántara, Gunther Kletetschka, Paul Andrew Mayewski, Jennifer Parlier, Wendy S. Wolbach, Charles R. Kinzie, William C. Mahaney
Publikováno v:
The Journal of Geology, vol 126, iss 2
Journal of Geology, vol 126, iss 2
Journal of Geology, vol 126, iss 2
The Younger Dryas boundary (YDB) cosmic-impact hypothesis is based on considerable evidence that Earth collided with fragments of a disintegrating ≥100-km-diameter comet, the remnants of which persist within the inner solar system ∼12,800 y later
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a85626edd8b768c715df6bc93f564a6
https://doi.org/10.1086/695703
https://doi.org/10.1086/695703
Autor:
Adrian L Melott
Publikováno v:
PLoS ONE, Vol 3, Iss 12, p e4044 (2008)
Time series analysis of fossil biodiversity of marine invertebrates in the Paleobiology Database (PBDB) shows a significant periodicity at approximately 63 My, in agreement with previous analyses based on the Sepkoski database. I discuss how this res
Externí odkaz:
https://doaj.org/article/513971f85fd24f7b8e3f7206d81d2574
Autor:
Bruce S Lieberman, Adrian L Melott
Publikováno v:
PLoS ONE, Vol 2, Iss 8, p e759 (2007)
We re-examine the evidence for a 62 million year (Myr) periodicity in biodiversity throughout the Phanerozoic history of animal life reported by, as well as related questions of periodicity in origination and extinction. We find that the signal is ro
Externí odkaz:
https://doaj.org/article/ce9aba7949ed4d1b9994546c3cf8ff9e