Indication of drier periods on Mars from the chemistry and mineralogy of atmospheric dust

  title={Indication of drier periods on Mars from the chemistry and mineralogy of atmospheric dust},
  author={W. Goetz and Preben Bertelsen and C. S. Binau and Haraldur P Gunnlaugsson and S. F. Hviid and Kjartan M. Kinch and Daniel Esmarch Madsen and Morten Bo Madsen and Malte Olsen and Ralf Gellert and G{\"o}star Klingelh{\"o}fer and Doug W. Ming and Richard V. Morris and Rudolf Rieder and Daniel S. Rodionov and Paulo A. de Souza and Christian Schr{\"o}der and Steven W. Squyres and Thomas John Wdowiak and Albert S. Yen},
The ubiquitous atmospheric dust on Mars is well mixed by periodic global dust storms, and such dust carries information about the environment in which it once formed and hence about the history of water on Mars. The Mars Exploration Rovers have permanent magnets to collect atmospheric dust for investigation by instruments on the rovers. Here we report results from Mössbauer spectroscopy and X-ray fluorescence of dust particles captured from the martian atmosphere by the magnets. The dust on the… 
Overview of the magnetic properties experiments on the Mars Exploration Rovers
[1] The Mars Exploration Rovers have accumulated airborne dust on different types of permanent magnets. Images of these magnets document the dynamics of dust capture and removal over time. The
Duststones on Mars: source, transport, deposition and erosion
Dust is an abundant material on Mars, and there is strong evidence that it is a contributor to the rock record as ‘‘duststone,’’ analogous in many ways to loess on Earth. Although a common suite of
Martian Eolian Dust Probed by ChemCam
The ubiquitous eolian dust on Mars plays important roles in the current sedimentary and atmospheric processes of the planet. The ChemCam instrument retrieves a consistent eolian dust composition at
Dust Production by Abrasion of Eolian Basalt Sands: Analogue for Martian Dust
Dust is nearly ubiquitous on Mars, covering much of the planet's surface, having been redistributed by dust storms. Analysis of dust via landed instrumentation indicates a basaltic composition for
Mineralogy of Martian atmospheric dust inferred from thermal infrared spectra of aerosols
[1] We have utilized optical constants derived from thermal infrared spectra acquired by the Mariner 9 Infrared Interferometer Spectrometer (M9 IRIS) and Mars Global Surveyor Thermal Emission
Backscattering Mössbauer spectroscopy of Martian dust
We report on the determination of the mineralogy of the atmospherically suspended Martian dust particles using backscattering 57Fe Mössbauer spectroscopy on dust accumulated onto the magnets onboard
Nickel on Mars: Constraints on meteoritic material at the surface
[1] Impact craters and the discovery of meteorites on Mars indicate clearly that there is meteoritic material at the Martian surface. The Alpha Particle X-ray Spectrometers (APXS) on board the Mars
Dust deposition on the decks of the Mars Exploration Rovers: 10 years of dust dynamics on the Panoramic Camera calibration targets
An improved dust correction procedure based on a two‐layer scattering model is presented, and a dust reflectance spectrum derived from long‐term trends in the data set is presented.
A global Mars dust composition refined by the Alpha‐Particle X‐ray Spectrometer in Gale Crater
Modern Martian dust is similar in composition to the global soil unit and bulk basaltic Mars crust, but it is enriched in S and Cl. The Alpha Particle X‐ray Spectrometer (APXS) on the Mars Science
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[1] The Magnetic Properties Experiment (referred to as iSweep or Caltarget) onboard the Phoenix lander was executed in the arctic region of Mars during the mission's 152 sols lifetime. The iSweep


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The Mars Pathfinder lander carried two magnet arrays, each containing five small permanent magnets of varying strength. The magnet arrays were passively exposed to the wind borne dust on Mars. By the
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The magnetic properties experiments are designed to help identify the magnetic minerals in the dust and rocks on Mars—and to determine whether liquid water was involved in the formation and
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It is shown that bright dust deposits on opposite sides of the planet are part of a global unit and not dominated by the composition of local rocks, and Nickel abundances are enhanced at the immediate surface and indicate that the upper few millimetres of soil could contain up to one per cent meteoritic material.
Properties and effects of dust particles suspended in the Martian atmosphere
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Magnetic properties experiments on the Mars Pathfinder lander: preliminary results.
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Magnetic Properties Experiments on the Mars Exploration Rover mission
[1] The Mars Exploration Rovers each carry a set of Magnetic Properties Experiments designed with the following objectives in mind: (1) to identify the magnetic mineral(s) in the dust, soil and rocks
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The alpha particle x-ray spectrometer on the Spirit rover determined major and minor elements of soils and rocks in Gusev crater in order to unravel the crustal evolution of planet Mars. The
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The Mars Exploration Rover Opportunity has investigated the landing site in Eagle crater and the nearby plains within Meridiani Planum, and the rocks are interpreted to be a mixture of chemical and siliciclastic sediments formed by episodic inundation by shallow surface water, followed by evaporation, exposure, and desiccation.
Properties of dust in the Martian atmosphere from the Imager on Mars Pathfinder
The Imager for Mars Pathfinder (IMP) returned sequences of images of the Martian sky characterizing the size distribution, optical constants, and nature of the aerosols suspended in the atmosphere of