引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 2670次   下载 856 本文二维码信息
码上扫一扫!
分享到: 微信 更多
利用CRISM数据探测火星表面含水矿物及其演化
杨懿1,2, 金双根1, 薛岩松1
1.中国科学院 上海天文台, 上海 200030;2.中国科学院大学, 北京 100049
摘要:
火星表层矿物识别是了解火星大气环境变化、表层地质环境的关键因素。通过确定火星表层矿物,分析矿物特性,了解火星的环境状态、地质演化以及火星的未来适居性。火星勘测轨道器(Mars reconnaissance orbiter,MRO)上搭载的紧凑型侦察成像仪(compact reconnaissance imaging spectrometer for Mars,CRISM)是针对火星矿物探测的最新的高光谱成像仪,以很高的光谱分辨率覆盖可见光至近红外波段,为火星表面的矿物分布及区域填图提供了可能。通过光谱匹配及计算CRISM光谱参数综合产品,分析了火星Jezero以及Holden撞击坑内的矿物成分及其演化。Jezero与Holden因其复杂而关键的地质特征,被列为火星2020登陆任务的备选登陆点。对这两个地点的矿物探测与填图分析不仅可进一步分析火星典型地质特征以及演化,而且还可以为未来的火星登陆点分析提供现实意义。在研究区域已检测到与水成蚀变相关的含水硅酸盐类以及碳酸盐类与含水硫酸盐类。水合矿物增加了这些区域曾经含水的可能性,且矿物的多样性表明研究区地质环境经历了不同的变化,其中Jezero地区不同于火星的绝大多数地区从中性环境到酸性环境的演化,有可能经历了从中性环境到碱性环境的演化。
关键词:  火星;高光谱遥感;矿物识别;CRISM
DOI:10.15982/j.issn.2095-7777.2016.02.015
分类号:
基金项目:
Identification and Geological Evolution of Hydrated Minerals at Holden and Jezero Impact Craters Mars Using MRO CRISM Hyperspectral Data
YANG Yi1,2, JIN Shuanggen1, XUE Yansong1
1.Shanghai Astronomical Observatory, Chinese Academy of Science, Shanghai 200030, China;2.University of Chinese Academy of Sciences, Beijing 100049, China
Abstract:
Identification of mineral components in different regions on the Mars is crucial to understand the Martian geology and environmental changes. By recognizing the Martian surface mineral, the Martian's environment condition and geological evolution can be understood. Meanwhile, it can be used for further exploration of the habitability of the Mars. The compact reconnaissance imaging spectrometer for Mars (CRISM) on the Mars reconnaissance orbiter (MRO) is the most recent hyperspectral imager that has reached the Mars in order to detecting the minerals. The spectrometer covers the wavelength from visible to near infrared along with enhanced spectral resolution, which provides the ability to map the mineralogy on Mars. In this paper, based on the spectrum matching and calculating CRISM summary product, mineral composition and geological evolution of the Jezero and Holden craters on the Mars are analyzed. These two craters were proposed as the candidates of the landing sites for the Mars 2020 mission due to their complex geological characteristics. Therefore, identification of mineral components of these two sites can not only further analyze the typical geological characteristics and evolutions of the climate of Mars, but also provide practical significance for the analysis of future landing sites on the Mars. We have detected several kinds of hydrated minerals including carbonate, hydrated silicate and hydrated sulfate in the study areas. These minerals suggested the possibility that the Holden and Jezero craters have experienced long time water-rock interactions. Also, the diversity of the minerals found in these regions indicates the aqueous activities in multiple distinct environments and the different environment changes in the study areas. For example unlike the dominating environment evolution from neutral to acidic on the Mars, the evolution around the Jezero may be from neutral to alkaline.
Key words:  Mars;CRISM;hyperspectral;identification of mineral