JpGU-AGU Joint Meeting 2017

講演情報

[EE] ポスター発表

セッション記号 P (宇宙惑星科学) » P-PS 惑星科学

[P-PS02] [EE] Small Bodies: Exploration of the Asteroid Belt and the Solar System at Large

2017年5月22日(月) 15:30 〜 17:00 ポスター会場 (国際展示場 7ホール)

コンビーナ:eleonora ammannito(University of California Los Angeles)、中本 泰史(東京工業大学)、安部 正真(宇宙航空研究開発機構宇宙科学研究所)、Christopher T Russell(University of California Los Angeles)、渡邊 誠一郎(名古屋大学大学院環境学研究科地球環境科学専攻)

[PPS02-P14] Numerical simulation on the albedo of rough surfaces

*千秋 博紀1諸田 智克2横田 康弘3坂谷 尚哉4 (1.千葉工業大学、2.名古屋大学、3.高知大学、4.明治大学)

キーワード:アルベド、凹凸表面、熱進化

The bond albedo, or energy reflectance, is one of the most important physical parameters because it decides the thermal evolution of the surface. However the bond albedo could change with the roughness of the surface. Although the Hapke's parameter is often introduced to represent the effect of roughness on the phase function, the parameter is not straightforward.

We developed a new numerical model to simulate the image of a rough surface and by using the model calculated the bond albedo of the rough surface.
According to our model, even for the case with Lambertian polygons the bulk bond albedo depends not only on the roughness of the surface but also on the solar incident angle, because of heterogeneous distribution of irradiated area. In this presentation we will propose a new equation to calculate the bond albedo of a rough surface.