气候变化领域集成服务门户(CCPortal): Cross-Over Infrared Spectroscopy: A New Tool for the Remote Determination of Olivine Composition

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DOI	10.1029/2020GL089151
	Cross-Over Infrared Spectroscopy: A New Tool for the Remote Determination of Olivine Composition
	Kremer C.H.; Mustard J.F.; Pieters C.M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:20
英文摘要	Olivine ([Mg,Fe]2SiO4) has been remotely detected on numerous solar system bodies, but its composition has been only partially constrained using visible-near infrared (VNIR, 0.5–3 μm) and midinfrared (MIR, 8–15 μm) spectra. Meanwhile, the spectral character of olivine in the “cross-over” region of the infrared (4–8 μm) remains generally unexplored. We examine the relationship between olivine Mg# (molar Mg/[Mg + Fe] × 100) and the wavelength positions of two strong, discrete overtone-combination bands at ~5.6 and ~6.0 μm. In reflectance and thermal emission spectra measured for 47 synthetic and natural olivine samples that span the Mg-Fe solid solution, we find that the 5.6 and 6.0 μm bands shift systematically to longer wavelengths by 0.11 and 0.10 μm, respectively, with increasing Fe content. Our results indicate that olivine Mg# may be determined within ±10 mol% forsterite using the positions of these two bands, making “cross-over” region spectroscopy a potentially powerful remote sensing tool. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Binary alloys; Emission spectroscopy; Infrared devices; Infrared spectroscopy; Iron alloys; Iron metallography; Magnesium alloys; Olivine; Remote sensing; Combination bands; Forsterites; Midinfrared; Remote sensing tools; Spectral characters; Thermal emissions; Visible near-infrared; Wavelength position; Magnesium metallography; chemical composition; forsterite; iron; magnesium; olivine; remote sensing; visible spectrum; wavelength
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169545
作者单位	Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI, United States
推荐引用方式 GB/T 7714	Kremer C.H.,Mustard J.F.,Pieters C.M.. Cross-Over Infrared Spectroscopy: A New Tool for the Remote Determination of Olivine Composition[J],2020,47(20).
APA	Kremer C.H.,Mustard J.F.,&Pieters C.M..(2020).Cross-Over Infrared Spectroscopy: A New Tool for the Remote Determination of Olivine Composition.Geophysical Research Letters,47(20).
MLA	Kremer C.H.,et al."Cross-Over Infrared Spectroscopy: A New Tool for the Remote Determination of Olivine Composition".Geophysical Research Letters 47.20(2020).