In Situ Geophysical Exploration by Humans in Mars Analog Environments
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Transcript of In Situ Geophysical Exploration by Humans in Mars Analog Environments
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In Situ Geophysical In Situ Geophysical Exploration by Humans Exploration by Humans
in Mars Analog in Mars Analog EnvironmentsEnvironments
Brian ShiroBrian ShiroMay 13, 2010 May 13, 2010
UND 997 SymposiumUND 997 Symposium
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Outline
FMARSMission OverviewSeismic ProjectElectromagnetic Project
MDRSMission OverviewActive Seismic + GPR Project
Lessons Learned
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FMARS and MDRSFMARS = Flashline Mars Arctic Research Station
MDRS = Mars Desert Research Station
Based on the Mars Direct architecture
The Mars Society
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Getting There
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FMARS
Devon Island Founded 2000 Polar desert Located on rim of 39Ma Haughton Crater
12th crew: 6 people Crew Geophysicist Jun 27 - Aug 1, 2009 (26 days on Devon Island)
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Mars on Earth
Haughton Crater
Which one is Mars?
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Seismic Station
Study interior structure, origin, & evolution of Mars
Questions: crustal thickness, mantle properties, core radius, seismicity
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Earthquake!
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FMARS Seismic EVAs Summary
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Electromagnetic SurveyTime domain electromagnetic method (TDEM)
Purpose: look for groundwater, characterize subsurface resistivity
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Survey Design
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EVA Tracking
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FMARS TDEM EVAs Summary
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TDEM Results
Dolomite too resistive for our 40 m loop with 3.5 A power.
Can constrain subsurface resistivity to 1,000-10,000 -m.
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Depth to Groundwater
Can consrain upper bound of depth to conductor.
Assuming a 100 -m body, it would be at least 300 m deep.
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MDRS
Hanksville, UtahFounded 2002Desert with Jurassic/Craceous sedimentary features
89th crew, 6 peopleCrew CommanderJan 23 - Feb 6, 2010
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NDX-1 Kneepads
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Ground Penetrating Radar
CRUX instrument = miniaturized GPR developed by NASA
Data collected by Stoker et al. on Crew 85 in Nov 2009.
Found a strong reflector, a possible buried paleochannel
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Study Area
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Miyamoto Crater, Mars
Similar to the feature at MDRS
Inverted river channel intersects with crate rim
Former MSL landing site candidate
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Active Seismic SurveySeismic refraction, reflection, surface wave methods
Purpose: Determine shallow subsurface structure, Look for water
Land streamer with 12 geophones
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MDRS Seismic EVAs Summary
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Survey the Profile
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Collect Data
Hammer strike as source
Cover to see computer screen
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Fix Broken Geophone
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Seismic Data
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Seismic Results
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GPR Redux
GPR data collected again using CRUX by Crew 92 in March 2010.
Same profile as seismic experiment. General agreement with seismic results.
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GPR - Seismic Comparison
GPR data collected again using CRUX by Crew 92 in March 2010.
Same profile as seismic experiment.
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Lessons Learned
Simplify User interfaces: large buttons, easy-to-read screens, configurable prior to EVA, automation
Passive Seismic: Installation of Trillium Compact system (including burial) is feasible in spacesuits.
Electromagnetic: Laying loop manually, operating the PROTEM are not very practical in spacesuits.
Active Seismic: Land streamers are good for seismic profiling, but they are heavy. For long surveys, the source needs to be mobile on a rover, and data collection/processing should be automated.
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Related Presentations
Shiro, B. and C. Stoker (2010), “Iterative Science Strategy on Analog Geophysical EVAs,” NASA Lunar Science Forum 2010.
Ferrone, K., S. Cusack, C. Garvin, V.W. Kramer, J. Palaia, and B. Shiro (2010), “Flashline Mars Arctic Research Station 2009 Crew Perspectives,” AIAA SpaceOps 2010 Conf., 65-ME-18.
Shiro, B. and K. Ferrone (2010), “In Situ Geophysical Exploration by Humans in Mars Analog Environments,” Lunar Planet. Sci. Conf., 2052.
Shiro, B., J. Palaia, and K. Ferrone (2009), “Use of Web 2.0 Technologies for Public Outreach on a Simulated Mars Mission,” Eos Trans. AGU, 90(52), Fall Meet. Suppl., ED11A-0565.
Banerdt, B. and B. Shiro (2007), “The Seismic Exploration of Mars: History, Prospects and Barriers,” Seismological Research Letters, 78(2), 276.
AGU 2009
LPSC 2010
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Acknowledgements
FMARS-12 and MDRS-89 crewsRobert Zubrin, Artemis Westenberg, Chris Carberry, Aziz Kheraj, Mission Support Team
Pascal Lee, Stephen Braham, Brian GlassGene Traverse, Rob Harris, Dennis Mills, Paul Bedrosian, Carol Stoker, David Stillman, Bob Grimm, Rob Stewart, Jim Hasbrouck, Deborah Underwood, Chris Gifford, Andrew Feustel
Mike Gaffey, Santhosh Seelan, Pablo DeLeon, and entire UND SpSt Dept.
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Any Questions?
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