Assessment of Atmospheric-Driven Ground Noises for Dragonfly’s Seismic Observation on Titan
Dragonfly is one of NASA’s New Frontiers program missions, which is going to explore the largest Saturn’s moon, Titan in the mid-2030s. The main focus of the mission is “extraterrestrial habitability”, and Titan was selected because of its high similarity to our planet compared to other accessible bodies. In order to deepen our understanding of Titan’s environment and discuss the possibility of extraterrestrial life, a quadcopter-type spacecraft is going to fly to various sites on Titan and conduct chemical, meteorological, and geophysical observations on every landing occasion. As a part of the Dragonfly Geophysics and Meteorology Package (DraGMet), our short-period seismometer (DraGMet SEIS) will be installed on the spacecraft to investigate the internal environment of Titan.
The assessment of environmental noises is an important step in seismic observation because they directly control the quality of the data. On Earth, owing to a dense and worldwide seismic network together with meteorological stations, we can easily evaluate the noise level. However, due to a limited source of information on extraterrestrial planetary bodies, we are forced to rely on numerical modelings or extrapolation from Earth’s analog observations. In this study, we are trying to model a seismic noise induced by atmospheric activities on Titan, referring to terrestrial examples and the InSight seismic observation on Mars (2018 – 2022). In the presentation, followed by introducing the theoretical background and an example of the application to Martian seismic observation, we will share a preliminary environmental noise model of Titan. In addition, we will discuss how the atmospheric-induced signals can be used for the subsurface investigation.
Session: Special Applications in Seismology [Poster Session]
Type: Poster
Room: Exhibit Hall
Date: 5/1/2024
Presentation Time: 08:00 AM (local time)
Presenting Author: Keisuke Onodera
Student Presenter: No
Additional Authors
Keisuke Onodera Presenting Author Corresponding Author onodera@eri.u-tokyo.ac.jp University of Tokyo |
Taichi Kawamura kawamura@ipgp.fr Institut de Physique du Globe de Paris |
Kiwamu Nishida knishida@eri.u-tokyo.ac.jp University of Tokyo |
Hiroaki Shiraishi siraisi@planeta.sci.isas.jaxa.jp Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency |
Satoshi Tanaka tanaka@planeta.sci.isas.jaxa.jp Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency |
Takefumi Mitani mitani.takefumi@jaxa.jp Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency |
Hideki Murakami murakami@kochi-u.ac.jp Kochi University |
Ryuhei Yamada ryamada@u-aizu.ac.jp University of Aizu |
Shunichi Kamata kamata@sci.hokudai.ac.jp Hokkaido University |
Jun Kimura junkim@ess.sci.osaka-u.ac.jp Osaka University, Osaka, , Japan |
Hiroyuki Kurokawa hirokurokawa@g.ecc.u-tokyo.ac.jp University of Tokyo, Komaba, , Japan |
Yasuhito Sekine sekine@elsi.jp Tokyo Institute of Technology, O-okayama, , Japan |
Takeshi Tsuji tsuji@sys.t.u-tokyo.ac.jp University of Tokyo, Hongo, , Japan |
Mark P Panning mark.p.panning@jpl.nasa.gov Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, United States |
Ralph D Lorenz ralph.lorenz@jhuapl.edu Johns Hopkins University, Laurel, Maryland, United States |
Assessment of Atmospheric-Driven Ground Noises for Dragonfly’s Seismic Observation on Titan
Category
Special Applications in Seismology
Description