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Related Experiment Video

Updated: May 8, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

Spectral reflectance and morphologic correlations in eastern Terra Meridiani, Mars.

R E Arvidson¹, F Poulet, J-P Bibring

¹Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA. arvidson@wunder.wustl.edu

Science (New York, N.Y.)

|February 19, 2005

Summary

This summary is machine-generated.

Mars Express

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Area of Science:

Planetary Science
Astrogeology
Mineralogy

Background:

Eastern Terra Meridiani on Mars exhibits diverse geological terrains.
Previous exploration by the Opportunity rover identified hematite-bearing plains.

Purpose of the Study:

To investigate the mineralogy and distribution of water-bearing materials in eastern Terra Meridiani using Mars Express data.
To understand the geological context and scale of ancient aqueous environments.

Main Methods:

Analysis of hyperspectral image data from the Observatoire pour la Minéralogie, l'Eau, les Glaces, et l'Activité (OMEGA) instrument.
Comparison of OMEGA data with geological and mineralogical findings from the Opportunity rover.

Main Results:

Ubiquitous molecular water detected in etched terrain materials.
Crystalline water identified in kieserite (MgSO4.H2O) in specific northern regions.
Mineralogical similarities suggest regional-scale ancient aqueous environments.

Conclusions:

The etched terrain deposits and layered rocks share mineralogical similarities, indicating widespread ancient water activity.
Ancient aqueous environments in Terra Meridiani extend over regional scales, consistent with rover findings.