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Blencathra fieldwork questions

1 ) a)Aim: To check into and take notice of the downstream modifications in our Glenderaterra Beck near the Blencathra Field Research Centre in the Lake Region National Park. Hypothesis 1: as you go even more downstream the bigger the velocity will be as the larger capacity in the river means it has even more energy so will travel faster plus the channel will be wider and deeper bringing about less chaffing and a better hydraulic radius Hypothesis a couple of: As you go additional downstream the bedload size will become small and rounder as attrition will have worn away the bedload thus, making them decrease in size.

b)Hypothesis 1: To get better results as you go further downstream, more tribrituaries, precipitation and potentially snowmelt will increase the capability of the riv. This improved capacity will increase the energy with the river, additional eroding the beds and banks of the water and increasing it's combination sectional place. As your bunk beds and banking institutions will have worn away, they will be much smoother hence decreasing scrubbing and raising the river's efficiency. Speculation 2: Since stream buy and range downstream enhance, the bedload found at these areas would be expected to become much rounder and softer than bedload found upstream on an previously stream purchase. This is due to the bedload further downstream being eroded over time, simply by processes of abrasion and attrition, which in turn reduces the smoothness and size of the bedload. Upstream, the bedload in the route is still huge and angular because the lake has had not the time or maybe the power to erode the bedload.

2 . a)The selection of each of our sites allowed us to adopt samplings and observe downstream changes by 3 several locations down the river with 3 several stream requests, the fact we-took 5 units of data via 3 diverse stream instructions allowed all of us to observe the alterations downstream applying both stratified sampling ( 1st, second, 3rd(X2 with one becoming further downstream) order streams) and organized sampling (5 10meter intervals). We select our sites in such a way that that allowed all of us to assess channel attributes at diverse points inside the river. Each of our choice of where you can obtain info from was determined by health and safety and accessibility with the site. The sites we selected were near the center and footpaths caused it to be easy for us to carry the equipment b)We could've applied a randomly sampling approach i. at the. random amount tables to plot the points along the river from where data was obtained. A benefit of our technique was that i was able to check out a first, 2nd and 3rd order stream which best allowed us to discover the data we needed to observe downstream alter. c)In order to calculate hydraulic radius each and every site, it had been necessary to measure channel width, average depth and wetted perimeter. Measurements were collected for equally current and " bankfull” levels. Funnel width was measured utilizing a tape assess held taut across the channel. From the total distance (in metres), the width was divided into tenths and the interesting depth in cm was scored using a metre rule each and every of these points across the channel. An average interesting depth was calculated from these kinds of measurements in order to account for the variation comprehensive. The wetted perimeter was measured by carefully putting a chain over the bed and banks in the channel. The size of the submerged section of the chain was then measured using the tape measure. After we had all three measurements (width, average depth and wetted perimeter), we could then determine the cross-sectional area and hydraulic radius for each of the 15 sites. Average speed was scored at each site using a hydroprop and a great impellor. Songs were considered next to each bank then at 1 / 4 of the way, halfway and three quarters of the way across the channel. The impellor was held at 3/5 of the interesting depth of the route (point of fastest flow) and the time taken intended for the impellor to move from end with the hydroprop to the other was recorded in mere seconds. The time used...

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