Impact of Climate Change and Land Use on the Southwestern United States

Impacts of Climate Change on the Land Surface

This page is a discussion of
Reactivation of Stabilized Sand Dunes on the Colorado Plateau


A comment by Nick Lancaster

Dan -

A great use of the mobility index.

It really seems to work here, but when one gets to
southern California, the index appears to break down.  For
this see abstracts by Patterns of winds and aeolian
activity in the deserts of southern California, N.
Lancaster, A. Bach, A.J. Brazel,  Association of American
Geographers 1995 Annual Meeting Program and Abstracts,
166 , March 1995.

Response to Nick Lancaster

A comment by Daniel R. Muhs


Yes, I agree that there seem to be problems with the dune mobility
index in the Mojave, but it does seem to work OK for the more
arid Salton Trough area (see our Algodones paper in Vache's 
volume, for example).  I haven't read your abstract--can you 
mail a xerox of it to me (Dan Muhs, USGS, MS 980, Box 25046,
Federal Center, Denver, CO 80225), because our library doesn't
get the AAG abstracts.  Your index seems to work well for the
Great Plains, the Chihuahuan Desert, the Colorado Plateau, and
the Sonoran Desert--it seems there is something about the Mojave
that is different.  On the other hand, as we've discussed, we
need to evaluate the index for other continents.  By the way,
I apologize for omitting a reference to your 1988 JAE paper
on the Kalahari where the index was introduced.  We are in the
process of rectifying this oversight.  --Dan

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