barrier islands and future global sea levels

Question 1

where are barrier islands found

Answer 1

-from Florida to Connecticut

Question 2

what are barrier islands landforms of

Answer 2

-coastal submergence

Question 3

3 theories of barrier islands

Answer 3

-may have been sand dunes attached to the shore
-sea level rises flooded the land behind forming a lagoon
-the dunes not eroded so became islands

Question 4

formation of barrier isladns

Answer 4

-sediment supply from rivers and longshore drift currents supply sediment to barrier island
-river and tidal flows maintain open water between islands

Question 5

what does the IPCC predict of sea level rise and what is the cause of this

Answer 5

-50% sea level rise due to thermal expansion

Question 6

why has the instrumental record of sea level become more narrow

Answer 6

-technology improved, becoming more accurate

Question 7

what does the IPCC estimate an increase in sea level of by 2100

Answer 7

-estimate increase of 20-50cm by 2100

Question 8

factors that could influence the uncertainty in future projections of sea level change

Answer 8

-anthropogenic factors
-thermal expansion
-total emissions (Pop size, gov policies)
-technological advances
-speed of change
-improving scientific knowledge (mitigation factors and feedback mechanisms)

Question 9

why is sea level hard to predict

Answer 9

there is a number of factors that could affect sea level rise

Question 10

factors that could affect sea level rise

Answer 10

-thermal expansion due to global warming
-melting of glaciers and major ice sheets
-consumerism
-tectonic activity

Question 11

how does tectonic activity influence sea level rising

Answer 11

-changing shape of land to move entire plate affecting capacity of drainage basin