Japan Geoscience Union Meeting 2024

Presentation information

[J] Oral

S (Solid Earth Sciences ) » S-SS Seismology

[S-SS07] Seismic wave propagation: Theory and Application

Tue. May 28, 2024 9:00 AM - 10:15 AM 304 (International Conference Hall, Makuhari Messe)

convener:Kaoru Sawazaki(National Research Institute for Earth Science and Disaster Resilience), Akiko Takeo(Earthquake Research Institutute, the University of Tokyo), Masafumi KATOU(JGI, Inc.), Kyosuke Okamoto(National Institute of Advanced Industrial Science and Technology), Chairperson:Akiko Takeo(Earthquake Research Institutute, the University of Tokyo), Kaoru Sawazaki(National Research Institute for Earth Science and Disaster Resilience)

9:45 AM - 10:15 AM

[SSS07-04] Recent Progress in Planetary Seismology

★Invited Papers

*Keisuke Onodera1,2, Taichi Kawamura2 (1.Earthquake Research Institute / The University of Tokyo, 2.Institut de Physique du Globe de Paris, Université Paris Cité)

Keywords:Planetary seismology, Apollo, InSight, Moon, Mars

Seismology is now broadly applied to extraterrestrial planetary bodies. For example, on the Moon, a seismic network was constructed on the nearside over the course of the Apollo lunar seismic experiments (1969 – 1977), bringing us the knowledge of seismicity and the internal structure of the Moon (e.g., Nakamura et al., 1982; Garcia et al., 2019; Nunn et al., 2020). Interestingly, even half a century after the operation terminated, still new moonquakes have been discovered, and progress has been made continuously (e.g., Knapmeyer-Endrun & Hammer, 2015; Onodera, 2024).

The latest breakthrough in planetary seismology was NASA’s InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) mission (e.g., Banerdt et al., 2020; Lognonné et al., 2023), which was operated on Mars from 2018 to 2022. Seismic detections on Mars enhanced the idea that the red planet is geologically active and blazed a trail to the studies of seismicity and the internal structure. All these contributions not only expanded the application of seismology but also enabled us to compare different planets from the seismological aspect. Now, in response to the successful operation of InSight, space agencies all over the world are moving to the internal exploration of planets (e.g., NASA’s Farside Seismic Suite, ISRO’s Chandrayyan-3, CNSA’s Chang’E-7 to the Moon, and NASA’s Dragonfly to Titan), and further development is expected in this field.

In the presentation, we will overview the progress in planetary seismology by referring to the key studies on the Apollo lunar and InSight Martian seismic data, respectively. Furthermore, we will introduce upcoming seismic explorations on extraterrestrial planets.


References:
・Banerdt et al. (2020), Initial results from the InSight mission on Mars. Nature Geoscience, 13(3), 183-189.
・Garcia et al. (2019), Lunar seismology: An update on interior structure models. Space Science Reviews, 215(8), 50.
・Knapmeyer-Endrun & Hammer (2015), Identification of new events in Apollo 16 lunar seismic data by hidden Markov model-based event detection and classification. Journal of Geophysical Research: Planets, 120(10), 1620- 1645.
・Lognonné et al. (2023), Mars seismology, Annual Rev. Earth Planet. Sci., 51, 643-670.
・Nakamura et al. (1982), pollo lunar seismic experiment—final summary. Journal of Geophysical Research: Solid Earth, 87(S01), A117-A123.
・Nunn et al. (2020), Lunar seismology: A data and instrumentation review. Space Science Reviews, 216(5), 89.
・Onodera (2024), Assessment of lunar seismicity using newly discovered shallow moonquakes, Proc. Lunar Planet. Sci. Conf., XXXXXV, 1077, Mar-2024, Houston, Texas, USA.