Summary and reflection
3 important questions on Summary and reflection
Drainage pattern is much less dense at Mid-Atlantic Ridge (due to permeability).
Translate geo map to dragars/lindars/johkulsars rivers. Translate combi of drainage and geo map and subcatchments in the glacier to p 87 - hydro classification.
Hydro class map: GW fed/direct runoff/glacier fed and their dominance. Link these colours to colours of geo map in combi with rainfall.
In the South, hydrology of Skaftafettl (ridge, outlook, west and eastern stream) and modelling of such a hill. MSc students tried to check on peat on top/the weathered top material of the basalt and where hydro base should be. Experiments with changing this hydro base, eg put it 10m below surface. There the pressure is increasing, maybe there there's no fractures. And even up to level where campsite is, so 100m above sea level. This had a large influence on the results!
Problem: you cannot drill to check where the hydro base is. When water is emerging from the bottom end, where campsite is, it will infiltrate into the gravel so you cannot see it. This gives a lot of uncertainty on how you could work on such models. But we try to do it to learn how water flow in basalt works.
Complexities in nature > what is most relevant (expert judgement) for your RQ & what should be represented in your model?
This also might increase the input data you need, depends on time you have, etc.
You have to make careful decisions. How are you gonna find out if you missed any important processes if you never visited a catchment in reality.
You have to make careful decisions. How are you gonna find out if you missed any important processes if you never visited a catchment in reality.
The question on the page originate from the summary of the following study material:
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