Components/Stores Flashcards

1
Q

beaches found

A

mostly sand and shingle, backwash limited to transport material so with uneven surface there’s little erosion

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2
Q

sand

A

produces gentle slope, small particles so compact when wet allowing little percolation

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3
Q

shingle

A

make up whole/upper parts, larger size material so steeper gradient as water rapidly percolates

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4
Q

cusps

A

semi-circular shaped depressions that occur at junction of shingle and sand beaches

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5
Q

spits

A

an elongated, narrow ridge of land that has one end joined to mainland and projects across sea/estuary, composed of sand and shingle

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6
Q

coastal sand dunes

A

accumulations of sand shaped into mounds by the wind

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7
Q

what process mostly moves sand inland

A

saltation

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8
Q

tombolo

A

a spit that joins an island to the mainland

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9
Q

offshore bar

A

where a ridge of beach material that remains semi-submerged accumulates seaward of the breaker zone

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10
Q

estuarine landscapes

A

where the sea meets a river, mudflats and salt marshes are produced

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11
Q

diversity of characteristics coastal landscapes where land meets the sea includes

A

bays, estuaries, beaches, deltas, dunes, mudflats and saltmarshes

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12
Q

why are coastal landscapes dynamic

A

there are large and ever-changing amounts of energy available from wind-driven waves, tides and currents so constantly changing

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13
Q

factors during the Holocene that caused today’s coastal landscape

A

local tectonic processes, sea level change, climatic change, changing ocean currents/wave regimes, natural disasters, changing sources/types/amounts of sediment, changing nature of human activity

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14
Q

coastal outputs from the system

A

sediment above tidal limit (lost via wind or gravity)
sediment removed beyond local sediment cell- into neighbouring ones via transportation at time of high energy
dissipation of wave energy- lost energy

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15
Q

wave-cut platform

A

a gently sloping (<5’) relatively smooth, marine platform caused by abrasion at the base of a cliff

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16
Q

eustatic change

A

a global change in sea level as a result of an actual fall/rise in the level of the sea itself

17
Q

fjord

A

former glacial valley drowned by rising sea levels

18
Q

isostatic change

A

local changes in sea level resulting from the land rising/falling relative to the sea

19
Q

raised beaches

A

areas of former wave-cut platforms and their beaches which are at a level higher than the present sea level

20
Q

ria

A

former river valley drowned by rising sea levels

21
Q

flocculation

A

clay particles join and form heavier particles which sink to the bed- during the formation of mudflats

22
Q

blowouts

A

when areas of sand dunes are funnelled out by winds removing sand, form where fragile sand dunes have their vegetation cover destroyed by grazing animals/human activity

23
Q

dune slacks

A

low lying depressions between the foredunes and main dunes which reach down to the water table

24
Q

main processes in the formation of sand dunes

A

saltation and creep

25
Q

ridges

A

sequence of dunes parallel to coastline

26
Q

halosere

A

process of vegetation succession that forms salt marshes

27
Q

Dalmatian coasts

A

where rivers flow parallel to the coast