Japan Geoscience Union Meeting 2015

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Oral

Symbol M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS35] Why is this planet to be the Earth? -the role of water

Sun. May 24, 2015 9:00 AM - 10:45 AM 201A (2F)

Convener:*Nobukazu Seama(Department of Planetology, Graduate School of Science, Kobe University), Yoshiyuki Tatsumi(Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology), Keiji Ohtsuki(Graduate School of Science, Kobe University), Takashi Nakagawa(JAMSTEC/MAT), Ikuo Katayama(Department of Earth and Planetary Systems Science, Hiroshima University), Gou Fujie(Japan Agency for Marine-Earth Science and Technology), Akiko Nakamura(Graduate School of Science, Kobe University), Chair:Keiji Ohtsuki(Graduate School of Science, Kobe University), Nobukazu Seama(Department of Planetology, Graduate School of Science, Kobe University)

9:00 AM - 9:15 AM

[MIS35-01] Impact history revealed by the cratering records of the Moon and planets

*Tomokatsu MOROTA1 (1.Nagoya Univ.)

Keywords:impact, crater, cratering chronology, Moon, late heavy bombardment

It is thought that the supply process of water to the Earth is closely related to the dynamics of the early solar system. Unraveling the impact history in the early Earth-Moon system is essential to understand the origin of water in the Earth. The cratering records of the Moon and planets preserve the impact history in the solar system during the past 4.5 Gyr, which is a key information to understand the source and the dynamical and collisional evolutions of small bodies.
In this talk, I would like to review the statistical studies of the cratering records of the Moon and planets and its findings. Also, I will present findings on the impact history in the early Earth-Moon system revealed by the Japanese lunar explorer SELENE (Kaguya).