Fieldwork Flashcards

(48 cards)

1
Q

What is the aim of our physical fieldwork - Scheveningen

A

How do coastal processes along Scheveningen Strand influence sand dune height and vegetation cover?
How successful is the management?

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2
Q

What is a hypothesis

A

A clear, directional and measurable statement that can be tested

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3
Q

3 Hypothesis for physical fieldwork

A

Longshore drift will occur in a North-Easterly direction
The percentage of vegetation cover will increase with distance from the shoreline
Scheveningen Strand is protected by a range of coastal management strategies

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4
Q

What is primary data collection

A

Data collected firsthand by the researcher for a specific purpose or study

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5
Q

What is secondary data collection

A

Data that has already been collected by someone else for a different purpose, but is reused for new analysis

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6
Q

Method examples for primary data collection

A

Experiments
Surveys
Observations

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7
Q

Advantages of primary data collection

A

More control over data quality
Up-to-date and relevant

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8
Q

Disadvantages of primary data collection

A

Time-consuming
Requires more effort and planning

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9
Q

Sources for secondary data collection examples

A

Government reports
Academic journals
Online databases

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10
Q

Advantages of secondary data collection

A

Quicker to access
Often includes large datasets

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11
Q

Disadvantages of secondary data collection

A

Potentially outdated
Data accuracy and quality may be unknown

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12
Q

What is qualitative data

A

Non-numerical information that captures qualities, experiences or opinions

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13
Q

What is quantitative data

A

Numerical information that can be measured, counted or expressed in numbers

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14
Q

Advantages of qualitative data

A

Flexible and open-ended
Provides detailed understanding

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15
Q

Examples of qualitative data collection

A

Interviews
Observations
Open-ended surveys

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16
Q

Disadvantages of qualitative data

A

Subjective
Difficult to analyse
Hard to generalise

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17
Q

Advantages of quantitative data

A

Objective and reliable
Easier to analyse
Generalisable

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18
Q

Disadvantage of quantitative data

A

Context ignored
Limited depth - doesn’t show underlying reasons

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19
Q

Examples of quantitative data

A

Survey ratings
Bar graphs - represents quantitative
Line graphs - represents qualitative

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20
Q

How did we measure wave frequency at Scheveningen - beach processes

A

One person counts the number of waves arranging per minute, waits for one minute then does it again. Repeat this 5 times.

21
Q

How was Scheveningen suitable to the hypothesis that longshore drift will occur in the north-easterly direction

A

It has a beach and shore - and the prevailing winds along the Dutch North Sea often drive sediment in the north-easterly direction

22
Q

How was Scheveningen suitable for the hypothesis that the percentage cover will increase when moving away from the shoreline

A

It has a natural dune system and zoned vegetation
It has vegetation such as marram further inland.

23
Q

How was Scheveningen suitable for the hypothesis that the beach is protected by a range of coastal management strategies

A

It had examples of soft and hard engineering including rised steps on stairs and sand nourishment.

24
Q

1st hazard risk and strategy to minimise for Scheveningen

A

Weather conditions (sunny day)
Sunburn or cold
Wearing sunscreen and appropriate clothing

25
2nd hazard risk and strategy to minimise
Private property Trespassing and you can get in trouble for it Know the area well, look where you are walking as well.
26
3rd hazard risk and strategy to minus use it in Scheveningen
Proximity to cliff face You can fall Be careful where you are walking
27
How did we measure wind speed in Scheveningen - beach processes
Stand in a clear open space, away from buildings trees or large obstacles Hold the anemometer at arms length and above head height for most accurate reading Make sure it is facing the wind Record the results and do this five times - one result every 2 minutes
28
How did we measure longshore drift in Scheveningen
Record the starting points and continuation with a measuring tape. Throw satsuma in water at starting point and record how far it goes after 5 minutes. Repeat 3 times.
29
Limitations of data collection methods for beach processes
Tidal and wind conditions affected longshore drift Weather and sea conditions affected results Measuring should be undertaken where there are no swimmers or paddlers for safety and reliability of results Tangerine is heavy
30
Main hypothesis of coastal processes data collection
The beach profile at Scheveningen will reflect the coastal processes
31
Successes of coastal processes data collection methods
Tangerine is biodegradable It is bright and big to see 5 times gets an average
32
Qualitative data we have used
Primary - field sketches Secondary - online photographs
33
Quantitative date methods we have used
Primary - using quadrants to measure vegetation percentage Secondary - surveys including scales taken from online
34
All three types of sampling
Random Systematic Stratified
35
What is random sampling
Where every member of the population has an equal chance of being selected
36
Advantages of random sampling
Reduces bias Simple to understand and apply
37
Disadvantages of random sampling
Could miss important patters if the sample ends up clustered in one area May not be truly representative of the whole area unless a large sample is taken
38
What is systematic sampling
Sample are selected using a regular interval
39
Advantages of systematic sampling
Ensures even coverage across an area, reducing the risk of clustering. Good for identifying patterns. Easy to carry ohr
40
Disadvantages of systematic sampling
It is less random as not all areas have an equal chance of selection May introduce bias if there’s a hidden pattern in the environment that aligns with the sampling interval.
41
What is stratified sampling
The population is divided into sub-groups based on characteristic and samples are taken proportionally from each group
42
Advantages of stratified sampling
Ensures all key groups or areas are represented. Allows comparisons between sub-groups
43
Data presentation used for quantitative data in Scheveningen
Bar graph - wave count Beach profile - line graph Radial graph - wind direction
44
Disadvantages of stratified sampling
Risk of bias if there’s stratification is done incorrectly More time consuming than the other sampling strategies
45
Date presentation used for qualitative data in Scheveningen
Maps Photographs Field sketches
46
What equipment was used for
Gun clinometer - takes a bearing of slope of the coast Tape measure Rule Ranging piles
47
Limitations when measuring a beach profile
Low tide is the best time to measure it but places a time constraint on it. It’s important that the ranging poles are held straight and prevented from sinking into sand, both of which may affect angle readings. There may be human errors when taking readings with gun clinometer
48
Hard engineering in Scheveningen
Recurved Sea wall Regraded cliff