MSL - SAM and CHEMIN, Discussion of the science/results from these instruments |
MSL - SAM and CHEMIN, Discussion of the science/results from these instruments |
Nov 21 2012, 11:46 AM
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#101
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Senior Member Group: Admin Posts: 3108 Joined: 21-December 05 From: Canberra, Australia Member No.: 615 |
ADMIN NOTE: Hi All, a new topic for the discussion of the science from the SAM and Chemin instruments.
There has been a very important amendment to Rule 1.3 which is explained here. Please remember Rule 1.3 at all times when discussing matters in this section. |
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Dec 18 2014, 11:19 AM
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#102
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
As you indicate, there are worlds between some detector signal of chlorinated hydrocarbons and definitive detection of chlorinated hydrocarbons derived from organic compounds of Martian origin.
With respect to D/H: The presence of liquid surface water with 3-fold enriched deuterium in the Hesperian could mean much larger amounts of water in the Noachian, at least if the D/H ratio of Standard Mean Ocean Water is assumed for the initial D/H ratio. This makes a much denser atmosphere on early Mars more likely, too. Thinking at methane: Methane is a much more efficient (about 30x according to some sources) geenhouse gas than CO2. If high methane abundance is assumed for early Mars, maybe the temperature dilemma can be resolved. |
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