thing to know for fieldwork

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bradshaw model

This is what your hypothesses is based on.  

Not just  what is expted to happen but why it is going to happen. 

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aim

To what extent do the characteristics of  the Rive torridge chage between our 2 study site with partuilce refence  to  the bradshaw modle 

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example of hypotheses/ our hypothiese

the bedload will dersase as you move   form soruce to mouth. 

channel width,depth, crosee selcatopn area and hydraiucle radius will all increase as you move down  the river from soruce to mouth.

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site 1

Study site 1 site had a some vegtaion on the banks , manily tree. The vally was quite step and v shaped.  The shape  of the chanle was that  of it being narrow and realivte  shallow when in  normal state  but when we saw it was in flood.

The land was being used by little ponys on a farm. This meant that the land neareset to the river was a disouce tree (which lose leaf in winnter) woldland and then beyone that there was  grass land with hedge row.

The gradient  was a step hill , step gradient and knick point.  Lead to the rapid’s.  

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Study site 2

Vegtaion less, few trees, reard/ grass.

The vally was a flat

channel  shape was  no clear shape, terrmany channel.(dose not exist most of the time)

Gradient, less step, near the top of the hill, as went down stream  chagen in gradient.

Land was used, extinses grazing, MOD firing range.

Evedenide of high weater table

along with a hight dragien desnity.  

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RISK 1

Risk 1

Drowing

High velocity and high disscahrge caused  high tubblet flow

Short lag time high

Cleary looked like in flood. 

Reonses to risk

Don’t; cloect  date there  meant had to uses sendary  date

Go near source of the river

Only student with wellgtion boots in river

Spot with shallow gradeint. 

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risk 2

Wills dissaes

bacteria

Spread by rate urine

Sagnet weater is were more danger river in flood so not a prblom. 

Washed hand Afet cloceting  the bedload

However

 minnal risk of  it as the condtion were not right for it. 

Not rat habbit, swer, step bank and and hiding place.

Not there habbits.

Lunch before date clocecting. 

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equminet

Tape mussaer

Meter stick

Ranging poles

flow metter

 

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methode.

River width, we streted  a tape mussaer aross a river from one bank to the other. Then we pulled it tight, and made sure it was horizontally agaist the surface of the  river.  So that  you do not  get a reading that is 2 long. also as so the river was in flood so the river dose not take the tape mussaer with it.  

Drop from a tape with a meter rule, messuring from the tape to the river bed. We did this evey 10 cm  if the river is narrow, using aporticse scale for the width of the river. 

Bedload size. Take 1 sample of sedmaiet form the river bed and musswe theee leght with a pair of caliper. Yqke evenily spcaced loactio along the river bed. 

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sterght and weaknes of methode

Used to work out othe think such wetted primter

Cross section area

Hydriqualc radius

Allow you to work out other think

Limaton/problem faced               

Tape musuaenr slacking

Ranging poll not stight

Serve whater, as river become taught.

Only a smaple so many smale site.

Meter rule offer reasitsne 

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what secodanry date how was it useful

we only manged to get  date  from one site which was a terreampry chanle.   we did this as the river was in flood. this meant  would chould not mussaer the bedload of the river. this meant  we has to uses secadry  date .  which  was usefull as  it allowed use to see the  bedload of the river even thought we chould not accutly  get any bed load date. 

It also  allowed use to to comaare  more that one site. as we were only able to  get   date  form one site. this was as the river was unsafe so we were unable to get priamry date e  for more than 1 site.   so it alowed   uses to see the beradshaw modle in action. 

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what is difference between quantitative and qual

quatitative date  information that can be counted or expressed numerically.  such  as detph of the river  

qualitative date- is extremely varried in nature.  it includesw  virtually any information that is not numerical  in nature. an example would be  measuring the quality of the envioment. 

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how did you present your data

One mehtode we used to preste  our date  was to uses to a a line  graph showing the width  and depth of the river which then  showed the cross sectiola area.   We draw the graph by fristing drawing the  x and y axis gvieing then approter  scale. This is so the date  dose not look dissotred and to make it easier .    Once this was  done we ploted the dater point  of the depth of the river which  we toke evey 20 cm.   once  the date was ploteed we joined the dot toghter   From this you can work at a lot more information fom your graph. 

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how we prrstedn our date coiutuend

Why that date presstion method We chose this mehtode as it give  a vissaul reposition. It also link to the hypoiheses.

Why chose it We chosese a line graph as it is coiuite date thefore a line graph is a apperiatr  techwiues to show. 

Why it many be usesfull

As it was testing the broashaw module.

Cross sectiola area is worked out by counting the sqauer muiltpluing by  area of each square.

we also chould work the wetted primiter- which mena work out the hyridaucke radius.

If got river vecoitly and cross secatial area you can get disschager. 

How do find graph go to support the  hypotihses.

Our graph show a tenacitve a link to the bradshaw model.  The problem we faced inuckd the are graph being based on serdary date, the wheather the we clotted our dtae was . 

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how did you analyses your data- method used

man witu u test 

·        Satred with null hypoitses

·        Put date in tablen of  site

·        Then rank date form 1-21 other both table

·        Tiedd rank were give mean of thr rank

·        Totalled rank in each couloum x and y

·        Carried out U test for collum X and Y 

·        UX=48.5   UY=54.5

·        Got rid of the higher valle(UY= 54.5)

·        Our ruslt was 48.5

·        Using table of crictal valles of U at p=0.05 (95% condifnde )

·        Our crilact vally of 26 abovve not sifeacnty

·        Therefor  our ruslt was not siffqcn at p=0.05.  

·        We then accpenct the  null hyposithes  for this set of date 

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how did we analyse your date null and alternate h

Null hypothiese- There is not siffcat different in bedload size between site 1 and 2.

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how did you analyse you date? how the calcuantion

·        Satred with null hypoitses

·        Put date in tablen of  site

·        Then rank date form 1-21 other both table

·        Tiedd rank were give mean of thr rank

·        Totalled rank in each couloum x and y

·        Carried out U test for collum X and Y 

·        UX=48.5   UY=54.5

·        Got rid of the higher valle(UY= 54.5)

·        Our ruslt was 48.5

·        Using table of crictal valles of U at p=0.05 (95% condifnde )

·        Our crilact vally of 26 abovve not sifeacnty

·        Therefor  our ruslt was not siffqcn at p=0.05.  

·        We then accpenct the  null hyposithes  for this set of date

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how we analysed the date what result mean

What was the rususlt

Our ruslt was 48.5

Ruslt mean

That we uses the null hypoitses

We accpect the null hypoiyse .

It give uses an anwerese but not a complet ruslult

Have to ve vautin about reulst

As it many be just to the charitse of the river

Also it was serdany date

Study site were realtre closes

It was alos a small smale size  meaning that it many not be resite of the river as a whole.  

Our ruslt do not repstse the broadshaw modle.

How suces full was the test?

Did we have a clear ruslt, we got a result

Form the dtae we used we had a clear russlt. Quistoont eh rabily  of the date.

This test is only small step in proving/ disproving the boradshaw modle. 

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your conclusions

Concluisison

The river bed load form the sedacrt date we used showed that the bed laod dose not chgageh as we go down stream.  This most likely due the the closes piroamzint of site.   This is the conatery of the broad shaw modle that show use that as we move down stream the bedlaod will get large.    As at the up stream site the sriver had a toltla bedlaod size alongy the x axis by 137.5mm were as the down strwam site was 93.3

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evulation aim

The aim of flied work was to see if the river Torridge flwoed the Braodshaw model.  During our fleid weork we pickied to site which were rliateve close to each other.  This rmanty that any change in the river was hard to notice or non exitne at all.    If doing it again we would of made the site futher away as this would sould grater change or made the chagen more obvious.    

To estnde this project  you would exadne your sated cleoction to more site and then more river in  a greater rnge of location.  But this would caus the problem that we walked to the site it woruld made cloectier. 

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evaluation- Anyisese

Anyisese

Man whiity.

We lesrn new skill. Such man wiy u test.

Lean how to do statise testing. 

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evaluation Method

Helped uses gain a undertaidng of process

Method we did not uses as of wheathe condtion

Mehtode was easy to flow, as the date was easy to tfasres into prestion such a  graph.  

In realry we faced prbolom as finding the bank were iifuclty as we chould find bacnk accurty musenr of width become a problem.

As a result of this we used serdacy date. A good point about this is that the date was cloeted flwoing the same method. By using it give use more date to work with. 

HS

We got there and got back safely. So we wpuld of fie if in that river 

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evulation Aim/ Hypoyitese

The aim of flied work was to see if the river Torridge flwoed the Braodshaw model.  During our fleid weork we pickied to site which were rliateve close to each other.  This rmanty that any change in the river was hard to notice or non exitne at all.    If doing it again we would of made the site futher away as this would sould grater change or made the chagen more obvious.    

To estnde this project  you would exadne your sated cleoction to more site and then more river in  a greater rnge of location.  But this would caus the problem that we walked to the site it woruld made cloectier.

Aim link to the theory braodgsow mdel

Hyo drieciy linked to the aim

Chane in vecoilty/ disshachre. 

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evaluation Date we closted

Most of our date we cloected was sendary dtae. This possed porbom for the anyisr of our date as we did not know how the date was cloected. They may of made human erroe which they did not notie, which then would of meany that are date aylsie would be worgen.  If were we to do this again we would be less reaalsint on serdadry date but more reailejtn on primary date.

If were to exadenr this date cloection we would cleoctiton more date. This would ave a problem

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