Space and Planetary Sciences (P)
Session Sub-category Planetary Sciences(PS)
Session ID P-PS02
Title Regolith Science
Short Title Regolith Science
Main Convener Name Koji Wada
Affiliation Planetary Exploration Research Center, Chiba Institute of Technology
Co-Convener 1 Name Makito Kobayashi
Affiliation The University of Tokyo
Co-Convener 2 Name Patrick Michel
Affiliation Universite Cote D Azur Observatoire De La Cote D Azur CNRS Laboratoire Lagrange
Co-Convener 3 Name Kevin J Walsh
Affiliation Southwest Research Institute Boulder
Session Language
E
Scope
Recent planetary explorations have revealed that almost all solid bodies in the solar system are covered with small particles, called regolith. The surface geology, especially regolith behavior on the surfaces of solid bodies, becomes increasingly more important as represented by the exploration and sample-return missions such as Hayabusa, Hayabusa2, OSIRIS-Rex, and MMX. For fully understanding the regolith science, it is required to know and compare the regolith conditions on various celestial bodies, from asteroids to planets, with various methods. Therefore, this session welcomes broad topics related to regolith on various celestial bodies, such as asteroids, comets, the Moon, the Martian moons, Mars, etc. Papers on the formation, evolution, and alteration processes of regolith particles and regolith systems on the surface of planetary bodies, remote and in-situ observational results and techniques, analyses and results of returned samples, and laboratory, numerical, and theoretical studies on the fundamental physical and chemical processes are all welcome. Note that what we call regolith is not just fine grains: all kinds of materials (more or less loose) that lie on the surface, from cobbles to finer grains, are our targets.
Presentation Format Oral and Poster presentation
Time Presentation No Title Presenter
Oral Presentation May 29 PM2
15:30 - 15:45 PPS02-01 Brazil-Nut Effect in a sloped bottom box Nithin Nallani
15:45 - 16:00 PPS02-02 Laboratory and numerical study of the behavior of angular particles under vibration: Implications for the formation and evolution of small bodies Yuna Isobe
16:00 - 16:15 PPS02-03 Energetics of P and S waves in lightly confined granular columns Vasu Paliwal
16:15 - 16:30 PPS02-04 Impact processes recorded by high pressure minerals and glass beads in Chang'e-5 regolith WEI DU
16:30 - 16:45 PPS02-05 Triboelectric Charging of Lunar Regolith Simulant Takeda Shinya
16:45 - 17:00 PPS02-06 Dynamic Regolith Exploration of Airless Small Bodies Through Low-Energy Multi-Impact Experiments Shogo Tachibana
Presentation No Title Presenter
Poster Presentation May 29 PM3
PPS02-P01 Resistance force from a powder layer during low-velocity impact: Variations due to porosity and ambient pressure Akiko Nakamura
PPS02-P02 Relationship between ejecta pattern and target particle size distribution Toshihiko Kadono
PPS02-P03 Comparison of Boulder Detection Performance on Asteroids Using Fine-Tuned Foundation Model and CNN Model Junho Hur
PPS02-P04 Opaque rich clasts in primitive mesosiderites naoji sugiura
PPS02-P05 Permittivity characteristics of lunar and asteroid regolith Makito Kobayashi