The River Erosion Process

Capture VR · ⏱ 3:10 · 3M مشاهدة · 6 years ago

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what we do on the experiment is we look at the effects of water and erosion on the banks of the river so without further ado gonna switch up and you'll hear the pump going and we've got our water coming in now it starts to head down river meanders along and already you should be able to see it starting to have effects on the bank and we have now lost one of our little trucks that was placed now this does couple of things it will actually divert the water to some areas it will also reduce the cross-sectional area of flow well it does that you increase the velocity of the water around that section now this can have knock-on effect in which case the velocity and the direction of flow will move to different position and you'll get different position of attack on the riverbanks so we run the experiments and we just look at the course now we've started off with fairly narrow meandering River it's come from here to there it's already widened out due to the erosion and we're starting to lose our banks the reducing in height and these bits in particular widen out and the effects of that erosion is carry in those places roughly about here it was starting to get quite low on the river bank now that's slowly being eroded away first bit waters now going over there it's up starsin let's get little bit of change to the course of our River this section in particular is interesting because what we've got it's quite wide channel now sent them till and I'm not sure if you can see it but this is now become quite its dead spot in the water there's not lot of movement there's not lot of acceleration around the bend anymore the course has taken so here you also notice that the sediments building up forming banks changing the direction of flow and over here we've actually changed the whole course of our river from this meander to slightly more straighter River this bends manage remained the same but we're now heading more or less down the center of the channel to the other end and now you've got totally different direction for the river all together and think we even move from our central channel over to the left