Japan Geoscience Union Meeting 2023

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[J] Oral

M (Multidisciplinary and Interdisciplinary) » M-ZZ Others

[M-ZZ45] Planetary defense - what should we do?

Tue. May 23, 2023 3:30 PM - 4:45 PM Exhibition Hall Special Setting (2) (Exhibition Hall 8, Makuhari Messe)

convener:Makoto Yoshikawa(Japan Aerospace Exploration Agency), Patrick Michel(Universite Cote D Azur Observatoire De La Cote D Azur CNRS Laboratoire Lagrange), Shin-ichiro Okumura(Japan Spaceguard Association), Tatsuaki Okada(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Chairperson:Shin-ichiro Okumura(Japan Spaceguard Association)

3:30 PM - 3:45 PM

[MZZ45-07] 10 years since the natural disaster caused by the Chelyabinsk meteorite

*Takahashi Noritsugu1, Yoshikawa Makoto2 (1.Musashino University, 2.JAXA)

Keywords:asteroid, Chelyabinsk meteorite, natural disasters

On February 15, 2013, an asteroid with an estimated diameter of 17 m and a mass of 10,000 tons approached from the direction of the sun, entered the atmosphere at a speed of 18.9 km/s, and exploded 29 km above Chelyabinsk Oblast. A shattered meteorite fell over Lake Chebarukuli, 70 km west-northwest of the explosion site, but caused little damage. However, it became a natural disaster due to the falling meteorite, such as damage to buildings and many injured people within a range of 50 km from the explosion point.
Ten years later, I will re-review the Chelyabinsk meteorite from the perspective of natural disasters caused by asteroid impacts.