干旱区生态环境知识资源中心(Arid): Dry Acid Deposition and Accumulation on the Surface of Mars and in the Atacama Desert, Chile.

Arid

报告编号	N20050173968
	Dry Acid Deposition and Accumulation on the Surface of Mars and in the Atacama Desert, Chile.
	Quinn, R. C; Zent, A. P; Ehrenfruend, P; Taylor, C. L; McKay, C. P; Garry, J. R. C; Grunthaner, F. J.
英文摘要	It has been discovered recently that soils from certain regions of the Chilean Atacama Desert have some characteristics that are similar to the surface materials tested by the Viking Landers. We have examined the acid-base equilibration kinetics of soils collected in the Chilean Atacama Desert and compare these results to information on the acidbase chemistry of martian surface samples derived from the Viking experiments. Soil pH is of interest because it plays a direct role in a number of processes that affect soil mineralogy, organic chemistry and soil biological load. The recent discovery at the Mars Exploration Rover (MER) Opportunity site of jarosite, which forms in strongly acidic-sulfate rich environments, heightens the importance of understanding the chemical state of the martian surface material and its behavior in aqueous systems. Some experimental information on the chemical behavior of the martian surface in aqueous systems can be deduced from the Viking biology experiments.
英文关键词	Mars(Planet) Soil properties Chile Acid deposition pH Dusts Planetary geology Viking lander Microorganisms Mineralogy Biological load Exobiology Extraterrestrial life Atacama Desert
出版年	2006
语种	英语
国家	United States
URL	http://r.cnki.net/KCMS/detail/detail.aspx?DbCode=KJBG&dbname=KJBGW&filename=59fb374a31c97d1d54a08334
来源机构	National Aeronautics and Space Administration
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/273428
推荐引用方式 GB/T 7714	Quinn, R. C,Zent, A. P,Ehrenfruend, P,et al. Dry Acid Deposition and Accumulation on the Surface of Mars and in the Atacama Desert, Chile.,2006.