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Hydrogen peroxide on Mars: Observations, interpretation and future plans

机译:火星上的过氧化氢:观测,解释和未来计划

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Ever since the Viking mass spectrometer failed to detect organics on the surface of Mars in 1976 (Biemann et al., 1976), hydrogen peroxide (H_2O_2) has been suggested as a possible oxidizer of the Martian surface (Oyama and Berdahl, 1977). However, the search for H_2O_2 on Mars was unsuccessful for three decades. In 2003, hydrogen peroxide was finally detected using two ground-based independent techniques, first with submillimeter heterodyne spectroscopy (Clancy et al., 2004) and then again with thermal infrared imaging spectroscopy (Encrenaz et al., 2004). The latter method has been used to simultaneously monitor the abundances and spatial distributions of H_2O_2 and H_2O on Mars as a function of the seasonal cycle. Comparison with the LMD Global Climate Model (GCM) shows that the observations favor simulations taking into account heterogeneous chemistry (Lefevre et al., 2008). It has been suggested (Delory et al., 2006; Atreya et al., 2006, 2007) that large amounts of hydrogen peroxide could be generated by triboelectricity during dust storms or dust devils. This paper presents a review of the present H_2O_2 dataset and an analysis of observability of peroxide during such events using present and future means.
机译:自1976年维京质谱仪未能检测到火星表面上的有机物以来(Biemann等人,1976年),过氧化氢(H_2O_2)被认为是火星表面的一种可能的氧化剂(Oyama和Berdahl,1977年)。然而,在火星上寻找H_2O_2的工作已失败了三十年。 2003年,终于使用两种基于地面的独立技术检测了过氧化氢,首先使用亚毫米外差光谱法(Clancy等,2004),然后使用热红外成像光谱法(Encrenaz等,2004)。后一种方法已被用来同时监测火星上H_2O_2和H_2O的丰度和空间分布随季节周期的变化。与LMD全球气候模型(GCM)的比较表明,考虑到非均相化学,这些观测结果有利于模拟(Lefevre等,2008)。有人提出(Delory等,2006; Atreya等,2006,2007),在沙尘暴或沙尘暴期间,摩擦电会产生大量的过氧化氢。本文介绍了目前的H_2O_2数据集,并使用现在和将来的方法对此类事件中过氧化物的可观察性进行了分析。

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