Coasts EQ4 Flashcards

(43 cards)

1
Q

in the last 6 years how many people were forced to move because of climate and weather related disasters

A

140 million

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2
Q

what are the economic losses of coastal recession and flooding in the Netherlands

A

-they spend €1.2 billion annually on coastal defences due to ongoing sea level rise
- severe flooding over 200m could lead to a GDP decline of 1.5 - 3 %

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3
Q

what are the economic losses of coastal recession and flooding in the USA

A
  • hurricane Katrina caused $125 billion in damages mainly due to storm surges and levee failures
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4
Q

what are the economic losses of coastal recession and flooding in Nigeria

A
  • Lagos coastal flooding threatens real estate worth $18 billion
  • erosion of Niger delta a economic hub for agriculture
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5
Q

what are the economic losses of coastal recession and flooding in Egypt

A
  • Nile delta flooding
  • agricultural losses could reach billions if no action
  • could lose 30% of fertile land which threatens millions of farmers livelihoods
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6
Q

what are the social losses of coastal recession and flooding in the USA

A
  • Florida and gulf coast
  • flood risks caused some people to abandon properties
  • post disaster trauma ( Katrina )
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7
Q

what are the social losses of coastal recession and flooding in the UK

A
  • Norfolk
  • entire streets have fallen into the sea due to coastal erosion
  • loss of properties
  • psychological and financial risks
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8
Q

what are the social losses of coastal recession and flooding in Bangladesh

A
  • displace 1.5 million people
  • health issues from water born diseases like cholera
  • destroy roads and schools
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9
Q

what are the social losses of coastal recession and flooding in Egypt

A
  • worsening inequalities
  • health and sanitation issues
  • damage to cultural heritage
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10
Q

environmental refugees as a result of climate change in Bangladesh

A
  • already displaced 1.5 million people
  • 13 million climate refugees by 2050
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11
Q

environmental refugees as a result of climate change in Egypt

A
  • over 2.5 million people living in the delta have already moved inland
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12
Q

environmental refugees as a result of climate change in Nigeria

A
  • in 2016 flooding displaced 600,000 people and many never returned
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13
Q

mitigation and adaptation strategies in the Netherlands

A
  • delta works
  • massive flood defence system
  • dykes, levees
    -strict urban planning
  • storm surge barrier
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14
Q

mitigation and adaptation strategies in the USA

A
  • Florida
  • roads and buildings elevated
  • $4.6 billion sea wall project being considered
  • exploring floating homes in Miami
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15
Q

mitigation and adaptation strategies in the Phillipines

A
  • investing in early warning systems
  • elevated housing
  • mangroves reforestation
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16
Q

mitigation and adaptation strategies in Thailand

A
  • Bangkok flood drainage tunnels
  • mangrove reforestation
  • flood resistant infrastructure
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17
Q

mitigation and adaptation strategies in India

A
  • constructing sea walls
  • improved disaster warning systems
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18
Q

what are threats to coastal areas

A
  • rising sea levels
  • increased coastal erosion
  • saltwater intrusion
  • storm surges
  • loss of ecosystems
  • loss of food security
  • loss of industry and agriculture
19
Q

where is kiribati

A

in central pacific oceans, it is made up of 33 islands and 21 are inhabited

20
Q

why does Kiribati have an uncertain future

A
  • impact of climate change and rising sea levels mean the people if Kiribati face cultural extinction and loss of there island homes
21
Q

what are the social impacts that climate change is having on Kiribati

A

-forced to abandon homes
-100,000 people in next 100 years may become environmental refugees
-disease, poor sanitation, poor waste disposal
-cultural erosion

22
Q

what are the economic impacts that climate change is having on Kiribati

A

-only Fiji has offered to help
-high cost of resettlement and many are moving to new Zealand
-cost of rebuilding and building defences

23
Q

what are the environmental impacts that climate change is having on Kiribati

A

-200m of land have disappeared
-pollution / waste on land
-king waves causing coastal erosion
-water pollution

24
Q

what is the migration with dignity strategy being used in Kiribati

A

scheme to help people migrate earlier away from Kiribati to get jobs elsewhere before they become environmental refugees

25
what are king tides in Kiribati
exceptionally high tides when the gravitational pull of the sin and moon and strongest. Causes coastal flooding, saltwater intrusion, damage to infrastructure
26
what is the stool of sustainability
3 pillars that make up sustainability: environmental, social and economic
27
what are 5 types of hard engineering
Rip-Rap (rock armour) Rock breakwater sea wall revetments groynes
28
what is Rip-Rap
otherwise known as rock armour large igneous or metamorphic boulders at the bottom of a sea wall at the back of a beach. These break up and dissipate wave energy
29
what are the advantages of Rip-Rap
erosion control low maintenance durability habitat creation aesthetic appeal
30
what are the disadvantages of Rip-Rap
high initial cost disruption to natural processes not aesthetically pleasing to everyone environmental impact of construction
31
rip rap image
32
what is rock breakwater
large rocks or boulders that reduce wave energy. They are built offshore forcing the waves to also break offshore
33
what are the advantages of rock breakwater
reduces wave energy protects infrastructure long lifespan can create new habitats encourages beach formation
34
what are the disadvantages of rock breakwater
high construction costs interferes with coastal processes (longshore drift) navigation hazard for boats habitat disruption during construction limited effectiveness in severe conditions
35
rock breakwater image
36
what is a sea wall
concrete wall with steel reinforcement and deep foundations. A physical barrier against erosion and dissipate wave energy
37
what are the advantages of sea walls
strong protection against flooding and erosion long lifespan immediate defence can be used for recreation (promenade) protects valuable land
38
what are the disadvantages of sea walls
very high construction and maintenance costs can caused increased erosion elsewhere as it reflects the energy environmental impact loss of natural aesthetics reduced beach access
39
sea wall image
40
what is revetments
stone, timber or concrete sloping structures which are permeable, they absorb wave energy and reduce swash distance
41
what are the advantages of revetments
effective erosion control cheaper than sea walls flexible materials and design less visually intrusive encourages sediment deposition
42
what are the disadvantages of revetments
can have high initial costs can be visually unattractive limited lifespan ongoing maintenance may not withstand extreme weather disrupt natural processes
43
revetments image