Salts an Europa's surface detected by Galileo's Near Infrared Mapping Spectrometer

被引：331

作者：

McCord, TB ^{[1
]}

Hansen, GB

Fanale, FP

Carlson, RW

Matson, DL

Johnson, TV

Smythe, WD

Crowley, JK

Martin, PD

Ocampo, A

Hibbitts, CA

Granahan, JC

机构：

[1] Univ Hawaii, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA

[2] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[3] US Geol Survey, Reston, VA 22091 USA

[4] STI Inc, Honolulu, HI 96813 USA

来源：

SCIENCE | 1998年 / 280卷 / 5367期

关键词：

D O I：

10.1126/science.280.5367.1242

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：

Reflectance spectra in the 1- to 2.5-micrometer wavelength region of the surface of Europa obtained by Galileo's Near Infrared Mapping Spectrometer exhibit distorted water absorption bands that indicate the presence of hydrated minerals, The laboratory spectra of hydrated salt minerals such as magnesium sulfates and sodium carbonates and mixtures of these minerals provide a close match to the Europa spectra. The distorted bands are only observed in the optically darker areas of Europa, including the lineaments, and may represent evaporite deposits formed by water, rich in dissolved salts, reaching the surface from a water-rich layer underlying an ice crust.

引用

页码：1242 / 1245

页数：4

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