yes, I'm aware of that, and his ideas were published in 2003.
This is a NEW image that shows things that he could not see back then on the much lower-resolution Odyssey images.
I'm looking forwards to some discussion on this issue with him, and others, at LPSC.
The new image is good evidence that a snow avalanche-based mechanism is appropriate for gully formation and maintenance on Mars.
It is more debatable what type of snow is responsible. I think the CO2 idea is more reasonable simply because CO2 is the dominant seasonal ice on Mars. Any model of snow-based gully formation must (in my opinion) first EXCLUDE CO2 as the mechanism before invoking H2O.
But at this point I think we should "agree to disagree". I don't think I will convince you in a hurry, nor you me. Let us both go and do our own research and work on models of Mars, and - most importantly - finding new image data to cast light on the situation.
I think the first year of Hi-Rise will be a particularly good one for al sorts of Mars studies.
Repeat years will be interesting for time-lapse studies of change in gullies such as these.
Space/Science » in reply to Christensen specifically used this gully system as evidence for his theory
Old ideas and new images
The whole thread (36 posts)
- Gullies from MRO (1,4 MB) and many other pictures
- Anybody got a high-def TV?
- The full scale jpeg image is 42.5 MB.
- Truly amazing
- re: Gullies from MRO - just what I was waiting for