Phase-ratio images of the surface of Mercury: Evidence for differences in sub-resolution texture

被引：21

作者：

Blewett, David T. ^{[1
]}

Levy, Connor L. ^{[1
,2
]}

Chabot, Nancy L. ^{[1
]}

Denevi, Brett W. ^{[1
]}

Ernst, Carolyn M. ^{[1
]}

Murchie, Scott L. ^{[1
]}

机构：

[1] Johns Hopkins Univ, Appl Phys Lab, Planetary Explorat Grp, Laurel, MD 20707 USA

[2] Century High Sch, Sykesville, MD 21784 USA

来源：

ICARUS | 2014年 / 242卷

关键词：

Mercury; surface; Geological processes; Regoliths; Image processing; Impact processes; DUAL IMAGING-SYSTEM; LUNAR-SURFACE; SPECTROPHOTOMETRIC PROPERTIES; STRUCTURAL DISTURBANCES; MESSENGER; REFLECTANCE; VOLCANISM; HOLLOWS;

D O I：

10.1016/j.icarus.2014.08.024

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Analysis of images that were obtained at different phase angles can give clues to the texture of a planetary surface. Here we describe MESSENGER phase-ratio images for features on the surface of Mercury, including hollows on the floor of Eminescu basin, a pyroclastic deposit found within the Caloris basin, and a dark impact-melt flow produced by the impact that formed Waters crater. The results indicate that hollows and the pyroclastic material are characterized by finer particle size or smoother sub-resolution roughness than the ordinary impact-generated regolith. The impact melt flow appears to have a surface that is rougher or consists of coarser particle sizes than the nearby background. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：142 / 148

页数：7

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