Physical Fieldwork (Eastbourne)

Sub-questions, Primary Research, Secondary Research, Presentation Techniques + 9 Marker Plan

What is the Title of the Physical Fieldwork Enquiry?

How Effective is Coastal Management in Eastbourne?

What are the Three Sub-Questions?

1. What Processes are Affecting the Coastline?

2. What Types of Coastal Management are Used?

3. How Effective are Groynes at Stopping Longshore Drift?

What does Accuracy + Reliability mean?

• Accuracy → How CLOSE a MEASUREMENT is to its TRUE VALUE → NO BIAS + HUMAN ERROR

• Reliability → How CONSISTENTLY a METHOD measures → LARGE SAMPLE SIZE + REPEATS + AVERAGE

What are my Four Primary Research Methods?

• LONGSHORE DRIFT SURVEY

• BIPOLAR EVALUATION of GROYNES

• BEACH PROFILE

• GROYNE PROFILE

How to do a Longshore Drift Survey?

1. Put APPLE into Sea

2. SEE DIRECTION it moves

3. TIME how long it takes to go 10m

What is an Advantage of a Longshore Drift Survey?

• Showed DIRECTION of LONGSHORE DRIFT

• 2 SITES → RELIABLE

What is a Disadvantage of a Longshore Drift Survey?

• HUMAN ERROR → INACCURATE

How to do a Bipolar Evaluation of Groynes?

1. Look at RANDOM GROYNE

2. Fill out SURVEY on SCALE from -3 to 3 (e.g Able to Control Flooding, Aesthetics, Safety)

What is an Advantage of a Bipolar Evaluation of Groynes?

• QUICK

What is an Disadvantage of a Bipolar Evaluation of Groynes?

• SUBJECTIVE → INACCURATE

• NOT PROPORTIONATE SAMPLE → 2/94 GROYNES

How to do a Beach Profile?

1. Put RANGING POLES 2m APART

2. Measure ANGLE from ONE POLE TO NEXT using CLINOMETER

3. REPEAT along LENGTH of Beach

What is an Advantage of a Beach Profile?

• 2 SITES → RELIABLE

• QUANTITATIVE

What is a Disadvantage of a Beach Profile?

• HUMAN ERROR → INACCURATE

How to do a Groyne Profile?

1. Measure HEIGHT of TOP OF GROYNE TO BEACH

2. Repeat along LENGTH of GROYNE

3. Repeat on OTHER SIDE

What is an Advantage of a Groyne Profile?

• QUANTITATIVE DATA

What is an Disadvantage of a Groyne Profile?

• HUMAN ERROR → INACCURATE

What was my Secondary Research?

GOVERNMENT WEBSITES:

• 94 GROYNES

• 3.65KM of CONCRETE SEA WALL

• BEACH REPLENISHMENT

What were my Four Presentation Techniques?

• Longshore Drift Survey → BAR GRAPH → DISCRETE DATA

• Bipolar Evaluation → RADIAL GRAPH → COMPARE VISUALLY

• Beach Profile → CROSS-SECTION → Shows ANGLE CHANGE

• Groyne Profile → BAR GRAPH → DISCRETE DATA

What did my Longshore Drift Survey show?

• Travelled EAST

• 37s to travel 10m at ONE SITE

• 33s to travel 10m at OTHER SITE

What did my Bipolar Evaluation show?

• NEGATIVE

• -2 on CONTROLLING FLOODING

• -3 on SAFETY

What did my Beach Profile show?

• STEEP then FLAT

• At 2m, it was 23°

• At 36m, it was 0°

What did my Groyne Profile find?

• MORE SEDIMENT on WESTERN GROYNE

• 1.5m on WESTERN SIDE

• 1m on EASTERN SIDE

What is my 9 Marker Plan?

How Effective is Coastal Management at Eastbourne?

P1: What Processes are Affecting the Coastline?

• LSD Survey → Apple in Sea + Measure Time to travel 10m

• EAST + 37s + 33s

• LSD takes place + goes EAST

• However, LESS ACCURATE because HUMAN ERROR → Don’t know SPEED

• RELIABLE because 2 SITES

P2: What Types of Coastal Management are Used?

• GOVERNMENT WEBSITES

• 94 GROYNES

• GROYNES STOP LSD by acting as PHYSICAL BARRIER

• ACCURATE, UP-TO-DATE because GOVERNMENT Websites

P3: How Effective are Groynes at Stopping Longshore Drift?

• GROYNE PROFILE → Measure amount of Sediment on Each Side

• 1m MORE SEDIMENT on WESTERN SIDE

• Groynes EFFECTIVE because they BLOCK SEDIMENT

• However, NOT PROPORTIONATE because only 2/94 Groynes

Conclusion:

• 2/3 VALID CONCLUSIONS