[GRASS-user] Suggestions for backward modelling of a river system

Achim Kisseler ak7 at jupiter.uni-freiburg.de
Wed Mar 17 17:52:37 EDT 2010

That erosion processes are highly non-linear. Running physical based 
erosion models in "backwards-mode" is not possible I would bet.

I guess one have to work with ground layers, geological land rising and 
lowering, climatic changes and so on.

But well-wrought concept ideas are always welcome.


On 17.03.2010 22:12, Maris Nartiss wrote:
> One can't turn back time, still I also have been thinking about
> playing with erosion models in backwards mode. If it's possible to
> calculate current erosion rate and eroded material ammount, it should
> be possible to add erroded material to DEM, repeat erosion model run
> on new DEM and in such way back for some K years (runs). It will not
> take into account all possible events, still for some landscapes it
> might work rather well (think - no high mountain areas or territories
> with often landslides etc.).
> Maris.
> 2010/3/17, Achim Kisseler<ak7 at jupiter.uni-freiburg.de>:
>> Hi,
>> that mean, as I understand, that you have to have a paleo DEM.
>> You have to ask the question:
>> On what data basis do I want to reconstruct paleo landscape?
>> Geomorphological changes cannot be reconstructed just with a present day
>> DEM.
>> Achim
>> On 17.03.2010 14:21, Marc Stonestreet wrote:
>>> Hi all
>>> Can anyone suggest a method to backward model a river system's flow path
>>> that can integrate with srtm data?
>>> I am seeking a way (if possible ) to look back in time at the paleo-course
>>> of a river system.
>>> I have no doubt that a solution would be a complex undertaking - could
>>> anyone advise me on what approach I should adopt at least?
>>> I have the srtm data - guess that was the easy part.. now how would I
>>> 'age' the data?
>>> Regards
>>> Marc S_______________________________________________
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>>> grass-user at lists.osgeo.org
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