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The '''Bradshaw Model''' is a ] model, which describes how a river's characteristics vary between the '']'' and '']'' of a river. It shows ], occupied channel width, channel depth, and how the average load quantity increases downstream,<ref>{{Cite web|url=https://www.geography-fieldwork.org/rivers/river-variables.aspx|title=Models of downstream change|last=|first=|date=|website=Geography Fieldwork|publisher=]|archive-url=https://web.archive.org/web/20160513161314/https://www.geography-fieldwork.org/rivers/river-variables.aspx|archive-date=May 13, 2016|dead-url=|access-date=}}</ref> for example; load particle size, ] roughness, and gradient are all characteristics that decrease. This is represented by triangles; an increase in the size of a triangle represents an increase in the variable. Generally it shows the characteristics we expect to see in a river, but due to the nature of rivers and the ever-changing environment in which we live, not all rivers fit the model perfectly. Therefore the model is usually used in order to compare natural rivers to concepts laid down by the model.<ref>earthstudies.co.uk</ref> The '''Bradshaw Model''' is a ] model, which describes how a river's characteristics vary between the '']'' and '']'' of a river. It shows ], occupied channel width, channel depth, and how the average load quantity increases downstream,<ref>{{Cite web|url=https://www.geography-fieldwork.org/rivers/river-variables.aspx|title=Models of downstream change|website=Geography Fieldwork|publisher=]|archive-url=https://web.archive.org/web/20160513161314/https://www.geography-fieldwork.org/rivers/river-variables.aspx|archive-date=May 13, 2016|url-status=}}</ref> for example; load particle size, ] roughness, and gradient are all characteristics that decrease. This is represented by triangles; an increase in the size of a triangle represents an increase in the variable. Generally it shows the characteristics we expect to see in a river, but due to the nature of rivers and the ever-changing environment in which we live, not all rivers fit the model perfectly. Therefore the model is usually used in order to compare natural rivers to concepts laid down by the model.<ref>earthstudies.co.uk</ref>


==References== ==References==

Revision as of 13:25, 14 October 2019

A geographical model, which describes how a river's characteristics vary between the upper course and lower course
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The Bradshaw Model is a geographical model, which describes how a river's characteristics vary between the upper course and lower course of a river. It shows discharge, occupied channel width, channel depth, and how the average load quantity increases downstream, for example; load particle size, channel bed roughness, and gradient are all characteristics that decrease. This is represented by triangles; an increase in the size of a triangle represents an increase in the variable. Generally it shows the characteristics we expect to see in a river, but due to the nature of rivers and the ever-changing environment in which we live, not all rivers fit the model perfectly. Therefore the model is usually used in order to compare natural rivers to concepts laid down by the model.

References

  1. "Models of downstream change". Geography Fieldwork. Field Studies Council. Archived from the original on May 13, 2016.
  2. earthstudies.co.uk
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