Hydrogen Peroxide on the Surface of Europa-Reference-Cited by-同舟云学术

Hydrogen Peroxide on the Surface of Europa

Published:1999-03-26 Issue:5410 Volume:283 Page:2062-2064
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Carlson R. W.¹,Anderson M. S.¹,Johnson R. E.²,Smythe W. D.¹,Hendrix A. R.³,Barth C. A.³,Soderblom L. A.⁴,Hansen G. B.⁵,McCord T. B.⁵,Dalton J. B.⁶,Clark R. N.⁶,Shirley J. H.¹,Ocampo A. C.¹,Matson D. L.¹

Affiliation:

1. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.

2. Engineering Physics, University of Virginia, Charlottesville, VA 22903–2442, USA.

3. Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80309–0590, USA.

4. United Stated Geological Survey, Flagstaff, AZ 86001, USA.

5. Planetary Geosciences Division, University of Hawaii, Honolulu, HI 96822, USA.

6. United States Geological Survey, Denver, CO 80225, USA.

Abstract

Spatially resolved infrared and ultraviolet wavelength spectra of Europa's leading, anti-jovian quadrant observed from the Galileo spacecraft show absorption features resulting from hydrogen peroxide. Comparisons with laboratory measurements indicate surface hydrogen peroxide concentrations of about 0.13 percent, by number, relative to water ice. The inferred abundance is consistent with radiolytic production of hydrogen peroxide by intense energetic particle bombardment and demonstrates that Europa's surface chemistry is dominated by radiolysis.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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