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Recognition of Sedimentary Rock Occurrences in Satellite and Aerial Images of Other Worlds—Insights from Mars. REMOTE SENSING 2021. [DOI: 10.3390/rs13214296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Sedimentary rocks provide records of past surface and subsurface processes and environments. The first step in the study of the sedimentary rock record of another world is to learn to recognize their occurrences in images from instruments aboard orbiting, flyby, or aerial platforms. For two decades, Mars has been known to have sedimentary rocks; however, planet-wide identification is incomplete. Global coverage at 0.25–6 m/pixel, and observations from the Curiosity rover in Gale crater, expand the ability to recognize Martian sedimentary rocks. No longer limited to cases that are light-toned, lightly cratered, and stratified—or mimic original depositional setting (e.g., lithified deltas)—Martian sedimentary rocks include dark-toned examples, as well as rocks that are erosion-resistant enough to retain small craters as well as do lava flows. Breakdown of conglomerates, breccias, and even some mudstones, can produce a pebbly regolith that imparts a “smooth” appearance in satellite and aerial images. Context is important; sedimentary rocks remain challenging to distinguish from primary igneous rocks in some cases. Detection of ultramafic, mafic, or andesitic compositions do not dictate that a rock is igneous, and clast genesis should be considered separately from the depositional record. Mars likely has much more sedimentary rock than previously recognized.
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Tsai EHR, Usov I, Diaz A, Menzel A, Guizar-Sicairos M. X-ray ptychography with extended depth of field. OPTICS EXPRESS 2016; 24:29089-29108. [PMID: 27958573 DOI: 10.1364/oe.24.029089] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Ptychographic X-ray computed tomography is a coherent diffractive imaging method that offers nanometer-scale resolution with quantitative contrast. It offers the possibility to study relatively thick samples by using high energy X-ray photons and exploiting the phase contrast. However, the limited depth of field forces a compromise between resolution and sample thickness. Multi-slice techniques have been used to account for propagation effects within the sample, enabling imaging beyond the depth-of-field limit. Here we introduce and experimentally demonstrate our multi-slice algorithms that allow for the reconstruction of multiple object slices and the incident illumination, as well as the retrieval of unknown object thickness. Additionally, through numerical studies, we show that smaller scanning steps surprisingly increase the depth of field, which can be further extended by the use of multi-slice methods under conditions stated by theoretical expressions. The results presented here will be instrumental for the routine implementation of the technique for X-ray nanotomography.
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Ruff SW, Farmer JD. Silica deposits on Mars with features resembling hot spring biosignatures at El Tatio in Chile. Nat Commun 2016; 7:13554. [PMID: 27853166 PMCID: PMC5473637 DOI: 10.1038/ncomms13554] [Citation(s) in RCA: 142] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 10/13/2016] [Indexed: 11/09/2022] Open
Abstract
The Mars rover Spirit encountered outcrops and regolith composed of opaline silica (amorphous SiO2·nH2O) in an ancient volcanic hydrothermal setting in Gusev crater. An origin via either fumarole-related acid-sulfate leaching or precipitation from hot spring fluids was suggested previously. However, the potential significance of the characteristic nodular and mm-scale digitate opaline silica structures was not recognized. Here we report remarkably similar features within active hot spring/geyser discharge channels at El Tatio in northern Chile, where halite-encrusted silica yields infrared spectra that are the best match yet to spectra from Spirit. Furthermore, we show that the nodular and digitate silica structures at El Tatio that most closely resemble those on Mars include complex sedimentary structures produced by a combination of biotic and abiotic processes. Although fully abiotic processes are not ruled out for the Martian silica structures, they satisfy an a priori definition of potential biosignatures.
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Affiliation(s)
- Steven W Ruff
- School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287-6305, USA
| | - Jack D Farmer
- School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287-6305, USA
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Núñez JI, Farmer JD, Sellar RG, Swayze GA, Blaney DL. Science applications of a multispectral microscopic imager for the astrobiological exploration of Mars. ASTROBIOLOGY 2014; 14:132-69. [PMID: 24552233 PMCID: PMC3929460 DOI: 10.1089/ast.2013.1079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 01/15/2014] [Indexed: 05/30/2023]
Abstract
Future astrobiological missions to Mars are likely to emphasize the use of rovers with in situ petrologic capabilities for selecting the best samples at a site for in situ analysis with onboard lab instruments or for caching for potential return to Earth. Such observations are central to an understanding of the potential for past habitable conditions at a site and for identifying samples most likely to harbor fossil biosignatures. The Multispectral Microscopic Imager (MMI) provides multispectral reflectance images of geological samples at the microscale, where each image pixel is composed of a visible/shortwave infrared spectrum ranging from 0.46 to 1.73 μm. This spectral range enables the discrimination of a wide variety of rock-forming minerals, especially Fe-bearing phases, and the detection of hydrated minerals. The MMI advances beyond the capabilities of current microimagers on Mars by extending the spectral range into the infrared and increasing the number of spectral bands. The design employs multispectral light-emitting diodes and an uncooled indium gallium arsenide focal plane array to achieve a very low mass and high reliability. To better understand and demonstrate the capabilities of the MMI for future surface missions to Mars, we analyzed samples from Mars-relevant analog environments with the MMI. Results indicate that the MMI images faithfully resolve the fine-scale microtextural features of samples and provide important information to help constrain mineral composition. The use of spectral endmember mapping reveals the distribution of Fe-bearing minerals (including silicates and oxides) with high fidelity, along with the presence of hydrated minerals. MMI-based petrogenetic interpretations compare favorably with laboratory-based analyses, revealing the value of the MMI for future in situ rover-mediated astrobiological exploration of Mars.
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Affiliation(s)
- Jorge I. Núñez
- School of Earth and Space Exploration, Arizona State University, Tempe, Arizona
| | - Jack D. Farmer
- School of Earth and Space Exploration, Arizona State University, Tempe, Arizona
| | - R. Glenn Sellar
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California
| | | | - Diana L. Blaney
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California
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Arvidson RE, Squyres SW, Bell JF, Catalano JG, Clark BC, Crumpler LS, de Souza PA, Fairen AG, Farrand WH, Fox VK, Gellert R, Ghosh A, Golombek MP, Grotzinger JP, Guinness EA, Herkenhoff KE, Jolliff BL, Knoll AH, Li R, McLennan SM, Ming DW, Mittlefehldt DW, Moore JM, Morris RV, Murchie SL, Parker TJ, Paulsen G, Rice JW, Ruff SW, Smith MD, Wolff MJ. Ancient Aqueous Environments at Endeavour Crater, Mars. Science 2014; 343:1248097. [DOI: 10.1126/science.1248097] [Citation(s) in RCA: 133] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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McSween HY, McGlynn IO, Rogers AD. Determining the modal mineralogy of Martian soils. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2010je003582] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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The Mars Astrobiology Explorer-Cacher (MAX-C): a potential rover mission for 2018. Final report of the Mars Mid-Range Rover Science Analysis Group (MRR-SAG) October 14, 2009. ASTROBIOLOGY 2010; 10:127-163. [PMID: 20298148 DOI: 10.1089/ast.2010.0462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This report documents the work of the Mid-Range Rover Science Analysis Group (MRR-SAG), which was assigned to formulate a concept for a potential rover mission that could be launched to Mars in 2018. Based on programmatic and engineering considerations as of April 2009, our deliberations assumed that the potential mission would use the Mars Science Laboratory (MSL) sky-crane landing system and include a single solar-powered rover. The mission would also have a targeting accuracy of approximately 7 km (semimajor axis landing ellipse), a mobility range of at least 10 km, and a lifetime on the martian surface of at least 1 Earth year. An additional key consideration, given recently declining budgets and cost growth issues with MSL, is that the proposed rover must have lower cost and cost risk than those of MSL--this is an essential consideration for the Mars Exploration Program Analysis Group (MEPAG). The MRR-SAG was asked to formulate a mission concept that would address two general objectives: (1) conduct high priority in situ science and (2) make concrete steps toward the potential return of samples to Earth. The proposed means of achieving these two goals while balancing the trade-offs between them are described here in detail. We propose the name Mars Astrobiology Explorer-Cacher(MAX-C) to reflect the dual purpose of this potential 2018 rover mission.
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Usui T, McSween HY, Clark BC. Petrogenesis of high-phosphorous Wishstone Class rocks in Gusev Crater, Mars. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008je003225] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yingst RA, Crumpler L, Farrand WH, Li R, Cabrol NA, Neakrase LD. Morphology and texture of particles along the Spirit rover traverse from sol 450 to sol 745. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008je003179] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Wang A, Bell JF, Li R, Johnson JR, Farrand WH, Cloutis EA, Arvidson RE, Crumpler L, Squyres SW, McLennan SM, Herkenhoff KE, Ruff SW, Knudson AT, Chen W, Greenberger R. Light-toned salty soils and coexisting Si-rich species discovered by the Mars Exploration Rover Spirit in Columbia Hills. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008je003126] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Herkenhoff KE, Grotzinger J, Knoll AH, McLennan SM, Weitz C, Yingst A, Anderson R, Archinal BA, Arvidson RE, Barrett JM, Becker KJ, Bell JF, Budney C, Chapman MG, Cook D, Ehlmann B, Franklin B, Gaddis LR, Galuszka DM, Garcia PA, Geissler P, Hare TM, Howington-Kraus E, Johnson JR, Keszthelyi L, Kirk RL, Lanagan P, Lee EM, Leff C, Maki JN, Mullins KF, Parker TJ, Redding BL, Rosiek MR, Sims MH, Soderblom LA, Spanovich N, Springer R, Squyres SW, Stolper D, Sucharski RM, Sucharski T, Sullivan R, Torson JM. Surface processes recorded by rocks and soils on Meridiani Planum, Mars: Microscopic Imager observations during Opportunity's first three extended missions. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008je003100] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sullivan R, Arvidson R, Bell JF, Gellert R, Golombek M, Greeley R, Herkenhoff K, Johnson J, Thompson S, Whelley P, Wray J. Wind-driven particle mobility on Mars: Insights from Mars Exploration Rover observations at “El Dorado” and surroundings at Gusev Crater. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008je003101] [Citation(s) in RCA: 220] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Cabrol NA, Herkenhoff KE, Greeley R, Grin EA, Schröder C, d'Uston C, Weitz C, Yingst RA, Cohen BA, Moore J, Knudson A, Franklin B, Anderson RC, Li R. Soil sedimentology at Gusev Crater from Columbia Memorial Station to Winter Haven. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007je002953] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Milliken RE, Mustard JF, Poulet F, Jouglet D, Bibring JP, Gondet B, Langevin Y. Hydration state of the Martian surface as seen by Mars Express OMEGA: 2. H2O content of the surface. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006je002853] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ralph E. Milliken
- Department of Geological Sciences; Brown University; Providence Rhode Island USA
| | - John F. Mustard
- Department of Geological Sciences; Brown University; Providence Rhode Island USA
| | | | - Denis Jouglet
- Institut d'Astrophysique Spatiale (IAS); Orsay Cedex France
| | | | | | - Yves Langevin
- Institut d'Astrophysique Spatiale (IAS); Orsay Cedex France
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Karunatillake S, Keller JM, Squyres SW, Boynton WV, Brückner J, Janes DM, Gasnault O, Newsom HE. Chemical compositions at Mars landing sites subject to Mars Odyssey Gamma Ray Spectrometer constraints. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006je002859] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - John M. Keller
- Physics Department; California Polytechnic State University; San Luis Obispo California USA
| | | | - William V. Boynton
- Lunar and Planetary Laboratory; University of Arizona; Tucson Arizona USA
| | | | - Daniel M. Janes
- Lunar and Planetary Laboratory; University of Arizona; Tucson Arizona USA
| | - Olivier Gasnault
- Centre d'Etude Spatiale des Rayonnements/Centre National de la Recherche Scientifique/Université Paul Sabatier Toulouse; Toulouse France
| | - Horton E. Newsom
- Institute of Meteoritics and Department of Earth and Planetary Sciences; University of New Mexico; Albuquerque New Mexico USA
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McEwen AS, Eliason EM, Bergstrom JW, Bridges NT, Hansen CJ, Delamere WA, Grant JA, Gulick VC, Herkenhoff KE, Keszthelyi L, Kirk RL, Mellon MT, Squyres SW, Thomas N, Weitz CM. Mars Reconnaissance Orbiter's High Resolution Imaging Science Experiment (HiRISE). ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2005je002605] [Citation(s) in RCA: 1056] [Impact Index Per Article: 62.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hurowitz JA, McLennan SM, McSween HY, DeSouza PA, Klingelhöfer G. Mixing relationships and the effects of secondary alteration in the Wishstone and Watchtower Classes of Husband Hill, Gusev Crater, Mars. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2006je002795] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Joel A. Hurowitz
- Department of Geosciences; State University of New York at Stony Brook; Stony Brook New York USA
| | - Scott M. McLennan
- Department of Geosciences; State University of New York at Stony Brook; Stony Brook New York USA
| | - Harry Y. McSween
- Department of Earth and Planetary Sciences; University of Tennessee; Knoxville Tennessee USA
| | - Paulo A. DeSouza
- Department of Environmental and Territorial Management; Companhia Vale do Rio Doce; Rio de Janeiro Brazil
| | - Göstar Klingelhöfer
- Institut für Anorganische und Analytische Chemie; Joh. Gutenberg-Universität Mainz; Mainz Germany
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Cabrol NA, Farmer JD, Grin EA, Richter L, Soderblom L, Li R, Herkenhoff K, Landis GA, Arvidson RE. Aqueous processes at Gusev crater inferred from physical properties of rocks and soils along the Spirit traverse. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002490] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- N. A. Cabrol
- Space Science Division; NASA Ames Research Center; Moffett Field California USA
- SETI Institute; Mountain View California USA
| | - J. D. Farmer
- Department of Geological Sciences; Arizona State University; Tempe Arizona USA
| | - E. A. Grin
- Space Science Division; NASA Ames Research Center; Moffett Field California USA
- SETI Institute; Mountain View California USA
| | - L. Richter
- DLR Institut für Raumsimulation; Cologne Germany
| | | | - R. Li
- Department of Civil and Environmental Engineering and Geodetic Science; Ohio State University; Columbus Ohio USA
| | | | - G. A. Landis
- Photovoltaics and Space Environment Branch; NASA John Glenn Research Center; Cleveland Ohio USA
| | - R. E. Arvidson
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
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Squyres SW, Arvidson RE, Blaney DL, Clark BC, Crumpler L, Farrand WH, Gorevan S, Herkenhoff KE, Hurowitz J, Kusack A, McSween HY, Ming DW, Morris RV, Ruff SW, Wang A, Yen A. Rocks of the Columbia Hills. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002562] [Citation(s) in RCA: 129] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Raymond E. Arvidson
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | - Diana L. Blaney
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | | | - Larry Crumpler
- New Mexico Museum of Natural History and Science; Albuquerque New Mexico USA
| | | | | | | | - Joel Hurowitz
- Department of Geosciences; State University of New York; Stony Brook New York USA
| | | | - Harry Y. McSween
- Department of Earth and Planetary Sciences; University of Tennessee; Knoxville Tennessee USA
| | | | | | - Steven W. Ruff
- Department of Geological Sciences; Arizona State University; Tempe Arizona USA
| | - Alian Wang
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | - Albert Yen
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
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Alexander DA, Deen RG, Andres PM, Zamani P, Mortensen HB, Chen AC, Cayanan MK, Hall JR, Klochko VS, Pariser O, Stanley CL, Thompson CK, Yagi GM. Processing of Mars Exploration Rover imagery for science and operations planning. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002462] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Douglass A. Alexander
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Robert G. Deen
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Paul M. Andres
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Payam Zamani
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Helen B. Mortensen
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Amy C. Chen
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Michael K. Cayanan
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Jeffrey R. Hall
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Vadim S. Klochko
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Oleg Pariser
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Carol L. Stanley
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Charles K. Thompson
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Gary M. Yagi
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
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Johnson JR, Grundy WM, Lemmon MT, Bell JF, Johnson MJ, Deen RG, Arvidson RE, Farrand WH, Guinness EA, Hayes AG, Herkenhoff KE, Seelos F, Soderblom J, Squyres S. Spectrophotometric properties of materials observed by Pancam on the Mars Exploration Rovers: 1. Spirit. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002494] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Mark T. Lemmon
- Department of Atmospheric Sciences; Texas A&M University; College Station Texas USA
| | - James F. Bell
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - Miles J. Johnson
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - Robert G. Deen
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Raymond E. Arvidson
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | | | - Edward A. Guinness
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | | | | | - Frank Seelos
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | - Jason Soderblom
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - Steve Squyres
- Department of Astronomy; Cornell University; Ithaca New York USA
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Arvidson RE, Squyres SW, Anderson RC, Bell JF, Blaney D, Brückner J, Cabrol NA, Calvin WM, Carr MH, Christensen PR, Clark BC, Crumpler L, Des Marais DJ, de Souza PA, d'Uston C, Economou T, Farmer J, Farrand WH, Folkner W, Golombek M, Gorevan S, Grant JA, Greeley R, Grotzinger J, Guinness E, Hahn BC, Haskin L, Herkenhoff KE, Hurowitz JA, Hviid S, Johnson JR, Klingelhöfer G, Knoll AH, Landis G, Leff C, Lemmon M, Li R, Madsen MB, Malin MC, McLennan SM, McSween HY, Ming DW, Moersch J, Morris RV, Parker T, Rice JW, Richter L, Rieder R, Rodionov DS, Schröder C, Sims M, Smith M, Smith P, Soderblom LA, Sullivan R, Thompson SD, Tosca NJ, Wang A, Wänke H, Ward J, Wdowiak T, Wolff M, Yen A. Overview of the Spirit Mars Exploration Rover Mission to Gusev Crater: Landing site to Backstay Rock in the Columbia Hills. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002499] [Citation(s) in RCA: 202] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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23
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McSween HY, Ruff SW, Morris RV, Bell JF, Herkenhoff K, Gellert R, Stockstill KR, Tornabene LL, Squyres SW, Crisp JA, Christensen PR, McCoy TJ, Mittlefehldt DW, Schmidt M. Alkaline volcanic rocks from the Columbia Hills, Gusev crater, Mars. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2006je002698] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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