Modeling the impact of asteroids over Mexican territory (9 pages)

• R. Gutiérrez-Zalapa ^[1] ; M. Rodríguez-Martínez ^[1] ; E. Aguilar-Rodríguez ^[1] ; J. Estévez-Delgado ^[1]
  1. [1] Universidad Nacional Autónoma de México

     Universidad Nacional Autónoma de México

     México

     
• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 70, Nº. 1, 2024
• Idioma: inglés
• Enlaces
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• Resumen

  • This work focuses on knowing the physical, environmental and population effects from the impact of an asteroid occurring in the Mexicanterritory. The work consists of the adaptation of routines product of previous works in the literature to generate a numerical code writtenin PyThon that allowed modeling this kind of phenomenon. Firstly, a map of the superficial densities of the Mexican territory has beendeveloped with a resolution of0.5◦of longitude by0.5◦of latitude of the Earth. The map allows us to find the value of surface density in aspecific geological area of the country. Once the surface density value was obtained, it is established as the value of the impact site (target).The model requires using fixed parameters, such as the diameter of the body, its density or mass, the angle of incidence and the density valueat the impact site. The output, provides the impact velocity, as well as the energy released, diameter and depth of the crater, the magnitudeof the earthquake as well as the damage on the surface. We studied the Chicxulub asteroid event in two hypothetical scenarios. Firstly, theatmospheric density profile was modified, allowing the calculation of a new value for the impact velocity. Secondly, we assume that theobject hits with a fraction of the initial mass, and with this the impact velocity and its effects were recalculated for three different targets.They were used to calculate the infrastructure damage they would cause if the impact could occur today. Finally, the results obtained by ourmodel were compared with the literature, showing that they are consistent with the observational data. Models such as this one contribute tohaving tools for the attention towards the prevention of this kind of event that in the context of the study risks from the space are necessaryin Mexico.