Modeling of water and material circulations in the solar system objects View Homepage


Ontology type: schema:MonetaryGrant     


Grant Info

YEARS

2017-2022

FUNDING AMOUNT

109200000.0 JPY

ABSTRACT

The purpose of this study is to construct a demonstrable physical model of water and material circulation in solar system objects and to clarify how solar system objects with diverse water environments were created. By the final year, we aim to incorporate the chemical processes quantified by the experimental team into the physical model of each celestial body and to unravel the history of water and material circulation of solar system celestial bodies by demonstrating exploration and analysis data. This year, with the aim of elucidating the amounts of water and volatile elements in various small bodies, theoretical spectral calculations were performed for the mineral combinations expected from the hydrolithic reactions conducted by the experimental group, and near-infrared Limosen data of small bodies. We constructed a theoretical framework that constrains the composition of the parent body. Focusing on the impacts that inevitably occur on small bodies, we constructed a model that can handle processes that are extremely important for the evolution of small bodies, such as dehydration of hydrous minerals and deformation due to plastic deformation. As for icy objects, the existence of methane hydrate surrounding the inner sea revealed that Pluto had evolved into a characteristic figure, and at the same time unraveled three mysteries related to Pluto. This suggests that there are more oceans in the universe than previously thought. Regarding the Mars sphere, continuing from last year, the team members are refining the science part of the Martian satellite exploration plan, which is the mission following Hayabusa2. We also compared it with observational data on the restoration of the Martian paleoenvironment and reproduced the paleoclimate using an atmospheric general circulation model. More... »

URL

https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-17H06457

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