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Population vulnerability models for asteroid impact risk assessment
Rumpf, C.M.; Lewis, H.G.; Atkinson, P.M. (2017). Population vulnerability models for asteroid impact risk assessment. Meteorit. Planet. Sci. 52(6): 1082-1102. https://dx.doi.org/10.1111/maps.12861
In: Meteoritics & Planetary Science. University of Arizona. Department of Geosciences: Fayetteville, AR. ISSN 1086-9379; e-ISSN 1945-5100
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| Auteurs | | Top |
- Rumpf, C.M.
- Lewis, H.G.
- Atkinson, P.M.
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| Abstract |
An asteroid impact is a low probability event with potentially devastating consequences. The Asteroid Risk Mitigation Optimization and Research (ARMOR)software tool calculates whether a colliding asteroid experiences an airburst or surfaceimpact and calculates effect severity as well as reach on the global map. To calculate the consequences of an impact in terms of loss of human life, new vulnerability models arederived that connect the severity of seven impact effects (strong winds, overpressureshockwave, thermal radiation, seismic shaking, ejecta deposition, cratering, and tsunamis) with lethality to human populations. With the new vulnerability models, ARMOR estimates casualties of an impact under consideration of the local population and geography. The presented algorithms and models are employed in two case studies to estimate total casualties as well as the damage contribution of each impact effect. The case studies highlight that aerothermal effects are most harmful except for deep water impacts, where tsunamis are the dominant hazard. Continental shelves serve a protective function against the tsunami hazard caused by impactors on the shelf. Furthermore, the calculation of impact consequences facilitates asteroid risk estimation to better characterize a given threat, and the concept of risk as well as its applicability to the asteroid impact scenario are presented |
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