Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Aaron P. Zent"'
Publikováno v:
Journal of Geophysical Research. Planets
In situ measurements of relative humidity (RH) on Mars have only been performed by the Phoenix (PHX) and Mars Science Laboratory (MSL) missions. Here we present results of our recalibration of the PHX thermal and electrical conductivity probe (TECP)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d95d7eb4eac257f54d92b25540b6ab1
https://doi.org/10.1029/2019je006080
https://doi.org/10.1029/2019je006080
Autor:
E. Fischer, Nilton O. Renno, Aaron P. Zent, Ari-Matti Harri, Hannu Savijärvi, L. K. Tamppari, German Martinez
Two recalibrated sets of Phoenix (PHX) near-surface TECP air humidity measurements were compared with results from adsorptive single column model simulations during a warm clear-sky polar midsummer period, PHX sols 50-60. The model's 2 m temperatures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12b285c5b94e7ea9250c599a612b943c
http://hdl.handle.net/10138/340194
http://hdl.handle.net/10138/340194
Publikováno v:
Journal of Geophysical Research: Planets. 121:626-651
A new calibration function for the humidity sensor in the Thermal and Electrical Conductivity Probe (TECP) on the Phoenix (PHX) Mars mission has been developed. Two changes are incorporated: (1) it is now cast in terms of frost point (Tf) rather than
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fad120097c9d65198f73424ea997772
https://doi.org/10.1002/2015je004933
https://doi.org/10.1002/2015je004933
Publikováno v:
Icarus. 251:191-210
Water ice in the upper meters of the martian regolith is a major volatile reservoir. Although the geographic extent, burial depth, and thermal stability of this shallow ice are well understood, its origin, history, and stratigraphy are not. Over the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de3ef33954d37260a9c2562763ede2b7
https://doi.org/10.1016/j.icarus.2014.04.013
https://doi.org/10.1016/j.icarus.2014.04.013
Publikováno v:
Earth and Planetary Science Letters. :90-94
The hypothesis that bombardment of lunar soil with solar-wind protons might form hydroxyl (OH) and perhaps HOH has been tested by experiments with Apollo 16 (highlands) and Apollo 17 (mare) soils. Pre-dried soils (500 °C) were bombarded with 1.1 keV
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de64a045cd495ae7d9bdd798b4dbba73
https://doi.org/10.1016/j.epsl.2012.06.027
https://doi.org/10.1016/j.epsl.2012.06.027
Autor:
Rachel M. Anderson, Samuel P. Kounaves, Peter H. Smith, Susanne Douglas, Q. Moore, C. P. McKay, Shannon T. Stroble, J. E. Quinn, L. K. Tamppari, Aaron P. Zent, D. W. Ming, P. D. Archer
Publikováno v:
Antarctic Science. 24:211-228
The McMurdo Dry Valleys are among the driest, coldest environments on Earth and are excellent analogues for the Martian northern plains. In preparation for the 2008 Phoenix Mars mission, we conducted an interdisciplinary investigation comparing the b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bcc832b58ecd4d6b26522e2615dae7d
https://doi.org/10.1017/s0954102011000800
https://doi.org/10.1017/s0954102011000800
Autor:
Aaron P. Zent
Publikováno v:
Icarus. 196:385-408
A time-resolved energy balance model in the latitude range targeted by Phoenix, and extending back in time over the past 10 Ma, has been developed and used to predict the time-varying temperature field in ground ice over scales ranging from minutes t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::242260288c8f479f274a5954e79d808f
https://doi.org/10.1016/j.icarus.2007.12.028
https://doi.org/10.1016/j.icarus.2007.12.028
Publikováno v:
Astrobiology. 6:581-591
Carbonates, predominately MgCO3, have been spectroscopically identified at a level of 2-5% in martian dust. However, in spite of this observation, and a large number of climate studies that suggest 1 to several bars of CO2 should be sequestered in ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::605203890eb42b2ca65a3768972b0f4f
https://doi.org/10.1089/ast.2006.6.581
https://doi.org/10.1089/ast.2006.6.581
Autor:
T. J. Ringrose, Frank J. Grunthaner, Richard C. Quinn, Martin C. Towner, Aaron P. Zent, James Garry
Publikováno v:
Sensors and Actuators B: Chemical. 114:841-848
We describe an atmospheric oxidation sensor developed and delivered as part of the European Space Agency (ESA) Beagle 2 (B2) Mars Lander Environmental Sensor Suite (ESS). The sensor monitors atmospheric oxidation rates by measuring resistance changes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ccaa0a785951d8eb4cad5845ebdc9b7
https://doi.org/10.1016/j.snb.2005.08.003
https://doi.org/10.1016/j.snb.2005.08.003