Ib 09 River Holford

IB Fieldwork 20.03.09 Background Slides 2 - 4 Syllabus requirements slides 6 - 9 Assessment outline slides 10 - 16 Fieldwork details slide 17 onwards

WETTED PERIMETER CROSS SECTIONAL AREA HYDRAULIC RADIUS The efficiency of the channel Cross sectional area --------------------------- Wetted perimater Width x 2 (depth) The total length of the bed and bank sides that comes into contact with water in the channel The amount of water in the wetted perimeter of the channel Width x mean depth of the channel

ROUGHNESS COEFFICIENT (MANNINGS ‘N’) VELOCITY DISCHARGE The rate at which water moves through the channel V = R (0.67) x S (0.5) ---------------------- n Cross-sectional area X Velocity The speed of the water in the channel The frictional force of a river bed and its effect on velocity Discharge -------------- Cross sectional area

Requirements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Data collection ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Higher Level Internal Assessment Criteria ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

A Aims and Hypotheses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

B Methods of Data Collection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

C Data Presentation and Processing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

D Interpretation and Analysis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

D ctd. Interpretation and Analysis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

E Conclusion and Evaluation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

An investigation into how channel parameters change from source to mouth River Holford

LOCATION OF FIELDWORK (see map) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Hypothesis examples… ,[object Object],[object Object],[object Object],[object Object]

THEORETICAL REASONING FOR DOWNSTREAM CHANGES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

CHOICE OF SITES ,[object Object],[object Object],[object Object],[object Object]

DATA COLLECTION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Flow rate Wetted perimeter Depth Clast shape Clast size Width Limitations of method Justification of method What equipment was used? How? What was measured?

SAMPLING TECHNIQUES ,[object Object],[object Object],[object Object]

DATA PRESENTATION (see graphs) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

STATISTICAL METHODS ,[object Object]

EVALUATION (PARTIAL, TENTATIVE AND INCOMPLETE) ,[object Object],[object Object],[object Object],[object Object]

analysis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

RELIABILITY (PHYSICAL AND HUMAN) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

EXTENSIONS ,[object Object],[object Object],[object Object],[object Object]

What we need to find out … ,[object Object],[object Object]

Ib 09 River Holford

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Ib 09 River Holford