Odisha Coast - Coast Flashcards
Where is Odisha
East coast
Bordering the Bay of Bengal
Shape of the coastline
Straight (480km) with few natural inlets or harbours
Where is most of the states population
On the Odisha coastal plain
What wide variety of Maine and coastal flora and fauna are in the coastal zone
Mangroves Sea grasses Salt marshes Sand dunes Estuaries Lagoons
How much mangrove is there
1435km
What are the three main features
Chilika Lake
Mahandi Delta
Bhitarkanita mangroves
How many types of birds are in the bird sanctuary of Chilika Lake
150 migratory and resident species (attracts tourists who also visits the beach)
What does the coast represent
A significant sediment store and is a source and sink of sediment for this part of the Bay of Bengal
What do rivers provide
Important transfers of sediment into the region in forming deltaic deposits
What is Chilika Lake classed as
A salty lagoon
What are there large stocks of in Chilika Lake
Fish and Olive Ridley turtles
What are many local people employed in
Coastal fishing and increasingly in aquaculture such as shrimps
What is the geology along the coast
Sediment contains valuable minerals, including clay and limestone in the north state which is used by local industies
What are there opportunities for in Odisha
Offshore oil and natural gas and the area has a huge potential for offshore wind, tidal and wave power
Why has rates of erosion increased in recent decades
As a result of natural processes and a consequence of human intervention
What is the Indian government concerned about
Vulnerability of coastal populations to storm surges and tsunamis and long-term threats of climate change and sea levels rise
What is the coastal considered to be
A dynamic environment
How do natural seasonal variations occur
In summer: build up of sediment along beaches, dunes and barrier beaches during low energy wave conditions.
In winter: erosion with high energy destructive waves depositing sediment offshore.
Who carried out the 2011 Shoreline Change Assessmnent
Ministry of Environment and Forests
What did the 2011 Shoreline Change Assessnwbt conclude
That any attempt to halt the natural processes with hard engineering structures was likely to only shift the problems elsewhere
How much of the coastline was found to be stable by the 2011 Shoreline Change Assessment
14.4%
What does the unstable coastline mean
That any human intervention is likely to interfere with sediment transfers and result in severe erosion in some localities
What is the Odisha coast at risk from
Tropical cyclones and storm surges - it is likely that the frequency and intensity of such storms will increase as a result of climate change
Examples of cyclones
1999 Odisha Cyclone
2013 Cyclone Phallin