Longshore Wander between Muriwai Beach and Maori Bay Essay

ResearchВ purposeВ: В HowВ doesВ longshoreВ driftВ operateВ andВ whatВ phenomenaВ influenceВ longshore drift. t;

TheВ MuriwaiВ coastalВ environmentВ isВ locatedВ 40KMВ NWВ ofВ AucklandВ onВ TasmanВ seaВ coastВ, В west coastВ ofВ NorthВ island.

HowВ longshoreВ driftВ operateВ andВ whatВ phenomenaВ affectВ longshoreВ driftВ atВ MuriwaiВ beach: TheВ fetchВ ofВ theВ MuriwaiВ coastalВ environmentВ isВ theВ TasmanВ sea. В TheВ stretchВ ofВ TasmanВ sea overВ theВ windВ blowВ createdВ theВ fetchВ andВ theВ strengthВ ofВ theВ fetchВ andВ windВ determineВ the strengthВ ofВ theВ wave.

WaveВ approachВ theВ beachВ atВ anВ angleВ dueВ toВ theВ directionВ ofВ theВ wind. HowВ weВ experimentВ itВ:

InВ ourВ group, В oneВ personВ standВ onВ theВ startingВ pointВ ofВ anotherВ personВ throwingВ anВ orangeВ (and repeatВ thisВ actionВ forВ 5В times)В В toВ bothВ theВ MuriwaiВ beachВ andВ MaoriВ bay. В TheВ movementВ ofВ the orangeВ helpВ usВ toВ determineВ В theВ directionВ ofВ theВ longshoreВ driftВ whichВ isВ dueВ toВ wind. В The movementВ ofВ theВ waveВ causesВ theВ swashВ upВ toВ theВ beachВ andВ theВ gravityВ pullsВ downВ theВ wave. TheВ orangeВ goesВ atВ theВ directionВ thatВ causeВ byВ theВ variablesВ thatВ IВ justВ mentionedВ andВ theВ dataВ is recordedВ asВ below.

MuriwaiВ beachВ (LongshoreВ Drift)

DistanceВ travelledВ (m)

VelocityВ (ms^В­1)

DirectionВ (N, T, W, E)

TrailВ 1

60m

0. 2ms^В­1

South

TrailВ 2

12m

zero. 04ms^В­1

Southern

TrailВ 3

35m

0. 116ms^В­1

North

TrailВ 4

89m

zero. 296ms^В­1

To the south

TrailВ 5

72m

0. 240ms^В­1

North

Common

53. 6m

0. 178ms^В­1

South

MaoriВ bayВ (LongshoreВ Drift)

DistanceВ (m)

VelocityВ (ms^В­1)

DirectionВ (N, T, W, E)

TrailВ 1

13. 7m

zero. 0456ms^В­1

Southern region

TrailВ 2

17m

0. 056ms^В­1

North

TrailВ 3

14m

zero. 046ms^В­1

North

TrailВ 4

3m

0. 01ms^В­1

South

TrailВ 5

12m

0. 04ms^В­1

To the south

Average

10. 94m

zero. 0395ms^В­1

To the south

BriefВ conclusionВ:

TheВ strengthВ andВ theВ speedВ ofВ theВ driftВ betweenВ MuriwaiВ beachВ andВ MaoriВ bayВ isВ different. В Muriwai beachВ hasВ aВ higherВ strengthВ andВ alsoВ theВ speedВ ofВ theВ driftВ compareВ toВ MaoriВ bayВ withВ an...

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