Atmospheric imaging results from the Mars exploration rovers: Spirit and Opportunity

被引：197

作者：

Lemmon, MT ^{[1
]}

Wolff, MJ

Smith, MD

Clancy, RT

Banfield, D

Landis, GA

Ghosh, A

Smith, PH

Spanovich, N

Whitney, B

Whelley, P

Greeley, R

Thompson, S

Bell, JF

Squyres, SW

机构：

[1] Texas A&M Univ, College Stn, TX 77843 USA

[2] Space Sci Inst, Boulder, CO 80301 USA

[3] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[4] Cornell Univ, Ithaca, NY 14853 USA

[5] NASA, Glenn Res Ctr, Cleveland, OH 44135 USA

[6] Univ Arizona, Tucson, AZ 85721 USA

[7] Arizona State Univ, Tempe, AZ 85287 USA

来源：

SCIENCE | 2004年 / 306卷 / 5702期

关键词：

D O I：

10.1126/science.1104474

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A visible atmospheric optical depth of 0.9 was measured by the Spirit rover at Gusev crater and by the Opportunity rover at Meridiani Planum. Optical depth decreased by about 0.6 to 0.7% per sol through both 90-sol primary missions. The vertical distribution of atmospheric dust at Gusev crater was consistent with uniform mixing, with a measured scale height of 11.56+/-0.62 kilometers. The dust's cross section weighted mean radius was 1.47+/-0.21 micrometers (mum) at Gusev and 1.52+/-0.18 pm at Meridiani. Comparison of visible optical depths with 9-mum optical depths shows a visible-to-infrared optical depth ratio of 2.0+/-0.2 for comparison with previous monitoring of infrared optical depths.

引用

页码：1753 / 1756

页数：4

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