thumbnail

Salts on Europa's surface detected by Galileo's near infrared mapping spectrometer

Science

By:
, , , , , , , , , , ,
DOI: 10.1126/science.280.5367.1242

Links

Abstract

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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Salts on Europa's surface detected by Galileo's near infrared mapping spectrometer
Series title:
Science
DOI:
10.1126/science.280.5367.1242
Volume
280
Issue:
5367
Year Published:
1998
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
1242
Last page:
1245
Number of Pages:
4