English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/97905
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


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

AuthorsHamilton, Victoria E.; Vasavada, Ashwin R.; Sebastián-Martínez, Eduardo ; Torre Juárez, Manuel de la; Ramos, Miguel; Armiens, Carlos ; Arvidson, R. E.; Carrasco, Isaías ; Christensen, P. R.; Pablo, Miguel A. de; Goetz, W.; Gómez-Elvira, Javier ; Lemmon, M.; Madsen, M. B.; Martín-Torres, F. J.; Martínez-Frías, J. ; Molina-Jurado, Antonio ; Palucis, M.; Rafkin, Scot C. R.; Richardson, Mark; Yingst, R. A.; Zorzano, María Paz
Ground temperature
Thermal inertia
Issue Date10-Apr-2014
CitationJournal of Geophysical Research: Planets, 119(4): 745- 770 (2014)
AbstractWe 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 ©2014. American Geophysical Union. All Rights Reserved.
Appears in Collections:(IACT) Artículos
(IGEO) Artículos
(CAB) Artículos
Files in This Item:
File Description SizeFormat 
JGRP_2014_119_4.pdf3,73 MBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.