Physical - Coastal Fieldwork Flashcards
Stratified Sampling def
Dividing sampling into groups, eg three sites from each section of coastline, can be combined with random or systematic
Systematic Sampling def
Collecting data in an ordered way, at regular intervals
Random Sampling def
Selecting a person to interview or site to measure, at random. Random sampling is unbiased as particular people or places are not specifically selected
Stratified Sampling a/d
- Correlations and comparisons can be made between sub-sets
- The proportions of the sub-sets must be known and accurate if it is to work properly
Systematic Sampling a/d
- Provides a good coverage of the area
- It is more biased, as not all members or points have an equal chance of being selected
Random Sampling a/d
- Least biased
- Does not provide an even spread / coverage
Title of geographical enquiry
How do coastal processes affect the beach at Pwll Du Bay?
Why was Pwll Du Suitable for investigating
- Short distance from an accommodation centre
- Evident LSD and coastal processes
- Easy transport
- Availability of facilities
Risks associated with the collection of primary data
- Getting wet: hypothermia
- Slipping: wounds, fractures
- Tide
- Getting Lost
Risk management
- Getting wet: waterproof clothing
- Slipping: Wear appropriate footwear
- Tide: Stay away from the water
- Getting lost: Group phone no, stay in groups
Sampling strategies used
Sediment Size: Random
Sediment Shape: Random
Beach Profile: Systematic
Quantitative Data
Sediment Size
Beach Profile
Sediment Shape
Qualitative Data
Field Sketch
Secondary Data
Local Geology map
How was data for sediment size collected
A-axis of sediment measured using callipers
