Tim,
Thanks very much for pointing us to that article and thanks Cosmicrocker for help finding it..
Full Version: Dunes inside Victoria
QUOTE (CosmicRocker @ Nov 21 2006, 01:03 AM) 
It's truly unfortunate that it is so expensive for people to access scientific journals these days. It just isn't right.
Indeed!
Taxpayers are unable to read about the work that they paid for without paying for it a third time. The first time is in the form of government grants that pay for the research. The second time in the form of government funding of univesities, who are the primary buyers of the scholarly works.
Research is an expensive activity. And space science is very, very expensive.
Also available on Arxiv.
QUOTE (CosmicRocker @ Nov 21 2006, 06:03 AM)
We need a new paradigm for the distribution of knowledge.
QUOTE (leustek @ Nov 22 2006, 01:51 AM)
Taxpayers are unable to read about the work that they paid for without paying for it a third time. The first time is in the form of government grants that pay for the research. The second time in the form of government funding of univesities, who are the primary buyers of the scholarly works.
Good news, folks!
http://en.wikipedia.org/wiki/Open_access
http://www.doaj.org/doaj?func=expand
We are not alone!
QUOTE (tdemko @ Nov 20 2006, 09:20 PM)
Just out in the most recent Earth and Planetary Science Letters:
Claudin, P., and Andreotti, B., 2006, A scaling law for aeolian dunes on Mars, Venus, Earth, and for subaqueous ripples: Earth and Planetary Science Letters, v. 252, p. 30-44.
Read, discuss, and enjoy!
Claudin, P., and Andreotti, B., 2006, A scaling law for aeolian dunes on Mars, Venus, Earth, and for subaqueous ripples: Earth and Planetary Science Letters, v. 252, p. 30-44.
Read, discuss, and enjoy!
As predicted, Martian aeolian bedforms are made of sand, albeit somewhat finer than on earth. Their prediction of 87 microns is close to the measured 100 microns. Unlike on earth, Martian aeolian sands also contain a singificant fraction of smaller grains, up to 500 microns, and are thus more poorly sorted.
Jon
http://hiroc.lpl.arizona.edu/images/TRA/TRA_000861_2580/
'North Polar Dunes' from HiRise showing a similar quasi-regular network structure to those in Victoria.
'North Polar Dunes' from HiRise showing a similar quasi-regular network structure to those in Victoria.
New detail in the dunes inside Endurance crater are visible in the new HiRISE images..
Backshell to Endurance image clip by Emily?
The east-west crests appear to fan out from the 3-o'clock position, and trail off towards 7 o'clock in the 3 or 4 long ripples we saw when inside the crater. The bigger crest system broadly north-south seems to over-ride the little east-west ripples. Looks like a prevailing easterly wind involved?
Kenny
Backshell to Endurance image clip by Emily?
The east-west crests appear to fan out from the 3-o'clock position, and trail off towards 7 o'clock in the 3 or 4 long ripples we saw when inside the crater. The bigger crest system broadly north-south seems to over-ride the little east-west ripples. Looks like a prevailing easterly wind involved?
Kenny
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