4.1 - Portballintrae Bad HE Flashcards Preview

Physical Geography - Important Case Studies > 4.1 - Portballintrae Bad HE > Flashcards

Flashcards in 4.1 - Portballintrae Bad HE Deck (6)
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1
Q

What hard engineering is in place?

A

Grounds
Revetments
Rip-rap

2
Q

What disrupted natural sediment movement

A

Enlarging Leslie’s pier in 1970

3
Q

Effect of Leslie’s pier

A

Starved beach as waves concentrated so more energy - more destructive and take more sediment away in backwash

4
Q

How much sediment is lost a year

A

1000m^2/yr

5
Q

What does the hard engineering not take into account

A

Sediment movement

Waves refracted so now swash-aligned

6
Q

Meaning of swash-alignment

A

Waves break parallel to the beach not at an angle (drift-aligned) so no LSD