There is confusion about the current drought / flood situation. I think we look for a simple logic in our relationship with Water and there isn't one. It acts, it intra-acts, differently over geology and time. Partly the problem is we don't understand our own particular site, the south is chalky, Water flow is a situated knowledge, we are quite connected to our regional geology through it - unlike oil, heat etc the other things we depend on.
In the chalky South East it takes quite a while for the water to filter through. If you are a geologist you understand this. For the rest of us it starts to make no sense that there is none of this vital material available even though it is falling form the skies on top of us everyday. And in a way there is a truth in that - would it not be better just to harvest it directly? Rain water is (apparently) potable - but you need to filter it. Why do we wait for someone else to drag it out of the ground for us ?
In the chalky South East it takes quite a while for the water to filter through. If you are a geologist you understand this. For the rest of us it starts to make no sense that there is none of this vital material available even though it is falling form the skies on top of us everyday. And in a way there is a truth in that - would it not be better just to harvest it directly? Rain water is (apparently) potable - but you need to filter it. Why do we wait for someone else to drag it out of the ground for us ?
A microscopic planktonic coccolith, whose skeletons form the chalk aquifers in the SE of England. These impact high porosity to the chalk matrix. The water contained in the pore spaces of the rocks matrix are virtually immobile, being held by capillary forces. It is cracks in the aquifer that impart a high permeability. Individual boreholes in the chalk can yield more than ten million litres per day.
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