講演情報
[PPS05-15]月極域地下氷探査のための高分解能地中レーダ
*熊本 篤志1、宮本 英昭2、西堀 俊幸3、土屋 史紀1、岩田 隆浩3、石山 謙3、尾崎 光紀4、大竹 真紀子3 (1.東北大学、2.東京大学、3.宇宙航空研究開発機構、4.金沢大学)
キーワード：
月極域探査、月の氷、地中レーダ
Design of high resolution ground penetrating radar (HGPR) for exploration of the subsurface ices in the lunar polar region has been investigated.
Presence of the ice in the lunar polar region has been long discussed in many studies [Watson et al., 1961; Arnold 1979; Feldman et al., 1998; Haruyama et al., 2008; Colaprete et al., 2010; Spudis et al., 2013]. Although we have no information on the depth, size, and abundance of the ice below the surface if it exists, we propose a high resolution ground penetrating radar onboard the rover with operation frequency of 1-15 GHz to detect the ice up to depth of 3 m at a resolution of 1 cm, which could be utilized as resources in the near future.
The porosity scale height below the lunar surface was estimated to be 6.5 km [Binder and Lange, 1980]. With assuming a regolith model in which pores are not filled by ice and partly filled by ice, the permittivity contrast between the regolith with ice and without ice are estimated to be enough detectable by the HGPR.
Presence of the ice in the lunar polar region has been long discussed in many studies [Watson et al., 1961; Arnold 1979; Feldman et al., 1998; Haruyama et al., 2008; Colaprete et al., 2010; Spudis et al., 2013]. Although we have no information on the depth, size, and abundance of the ice below the surface if it exists, we propose a high resolution ground penetrating radar onboard the rover with operation frequency of 1-15 GHz to detect the ice up to depth of 3 m at a resolution of 1 cm, which could be utilized as resources in the near future.
The porosity scale height below the lunar surface was estimated to be 6.5 km [Binder and Lange, 1980]. With assuming a regolith model in which pores are not filled by ice and partly filled by ice, the permittivity contrast between the regolith with ice and without ice are estimated to be enough detectable by the HGPR.