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Sökning: onr:"swepub:oai:DiVA.org:ltu-5832" > Observations and pr...

  • Hamilton, Victoria E.Department of Space Studies, Southwest Research Institute (författare)

Observations and preliminary science results from the first 100 sols of MSL Rover Environmental Monitoring Station ground temperature sensor measurements at Gale Crater

  • Artikel/kapitelEngelska2014

Förlag, utgivningsår, omfång ...

  • 2014
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:ltu-5832
  • urn:nbn:se:ltu:diva-5832urn
  • https://doi.org/10.1002/2013JE004520DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • <p>Upprättat; 2014; 20150115 (ninhul)</p>
  • We describe preliminary results from the first 100 sols of ground temperature measurements along the Mars Science Laboratory's traverse from Bradbury Landing to Rocknest in Gale. The ground temperature data show long-term increases in mean temperature that are consistent with seasonal evolution. Deviations from expected temperature trends within the diurnal cycle are observed and may be attributed to rover and environmental effects. Fits to measured diurnal temperature amplitudes using a thermal model suggest that the observed surfaces have thermal inertias in the range of 265-375?J m-2 K-1 s-1/2, which are within the range of values determined from orbital measurements and are consistent with the inertias predicted from the observed particle sizes on the uppermost surface near the rover. Ground temperatures at Gale Crater appear to warm earlier and cool later than predicted by the model, suggesting that there are multiple unaccounted for physical conditions or processes in our models. Where the Mars Science Laboratory (MSL) descent engines removed a mobile layer of dust and fine sediments from over rockier material, the diurnal temperature profile is closer to that expected for a homogeneous surface, suggesting that the mobile materials on the uppermost surface may be partially responsible for the mismatch between observed temperatures and those predicted for materials having a single thermal inertia. Models of local stratigraphy also implicate thermophysical heterogeneity at the uppermost surface as a potential contributor to the observed diurnal temperature cycle. Key Points Diurnal ground temperatures vary with location Diurnal temperature curves are not well matched by a homogeneous thermal model GTS data are consistent with a varied stratigraphy and thermophysical properties.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Vasavada, Ashwin R.Jet Propulsion Laboratory, California Institute of Technology, Pasadena (författare)
  • Sebastián, EduardoCentro de Astrobiologia, INTA-CSIC, Madrid (författare)
  • Juárez, Manuel De La TorreJet Propulsion Laboratory, California Institute of Technology, Pasadena (författare)
  • Ramos, MiguelDepartamento de Física y Matemática, University of Alcalá (författare)
  • Armiens, CarlosCentro de Astrobiologia, INTA-CSIC, Madrid (författare)
  • Arvidson, Raymond E.Department of Earth and Planetary Sciences, Washington University, St. Louis (författare)
  • Carrasco, IsaíasCentro de Astrobiologia, INTA-CSIC, Madrid (författare)
  • Christensen, Philip R.School of Earth and Space Exploration, Arizona State University (författare)
  • Pablo, Miguel A. DeDepartamento de Geología, Geografía y Medio Ambiente, University of Alcalá (författare)
  • Goetz, WalterMax-Planck-Institut für Solar System Research (författare)
  • Gõmez-Elvira, JavierCentro de Astrobiologia, INTA-CSIC, Madrid (författare)
  • Lemmon, Mark T.Department of Atmospheric Sciences, Texas A&M University, College Station, Texas (författare)
  • Madsen, Morten B.Niels Bohr Institute, Copenhagen University (författare)
  • Martin-Torres, JavierCentro de Astrobiologia, INTA-CSIC, Madrid , Instituto Andaluz de Cienccias de la Tierra (CSIC-UGR), Grenada(Swepub:ltu)javmar (författare)
  • Martínez-Frías, JesúsCentro de Astrobiologia, INTA-CSIC, Madrid , Instituto de Geociencias (CSIC-UCM), Ciudad Universitaria (författare)
  • Molina, AntonioCentro de Astrobiologia, INTA-CSIC, Madrid , Departamento de Física y Matemática, University of Alcalá (författare)
  • Palucis, Marisa C.Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles (författare)
  • Rafkin, Scot C RDepartment of Space Studies, Southwest Research Institute (författare)
  • Richardson, Mark I.Ashima Research, Pasadena (författare)
  • Yingst, R. AileenPlanetary Science Institute, Tucson (författare)
  • Zorzano, María-PazCentro de Astrobiologia, INTA-CSIC, Madrid(Swepub:ltu)marzor (författare)
  • Department of Space Studies, Southwest Research InstituteJet Propulsion Laboratory, California Institute of Technology, Pasadena (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Journal of Geophysical Research119:4, s. 745-7700148-02272156-2202

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