Thursday, May 9, 2013

Costa Rica’s Present and Future Geography



Costa Rica is a success story of Central America. It is a largely agricultural country bordering Caribbean Sea and North Pacific Ocean and between Nicaragua and Panama, but it has expanded its economy to include strong technology and tourism sectors. The living standard is relatively high. The unique geography is even more remarkable.

Because Costa Rica is located near the equator, the climate is tropical year round, which is fantastic for traveling. However, the country has microclimates depending on the each region’s particular geography. The season is divided two seasons: dry reason and rainy season. Dry season runs from December to April and rainy season runs from May to November. In lowland regions, the climate is hot and humid. In highland regions, the climate is usually mild and cool.
Costa Rica has some of world’s most dynamic volcanoes. There are over 100 volcanoes in Costa Rica including five of world recognized volcanoes which erupt on a regular basis.  There are occasional earthquakes and hurricanes along Atlantic coast but frequent lowland floodings during rainy season.
stratovolcano: famous Arenal Volcano
 

Landscape of Costa Rica in 1000 years
There should be an increase in the coasts shoreline in 1000 years from now. Rainy season has an impact on the low-lying coastal regions. Natural hazards like floods, landslides, storms, earthquakes and hurricanes make the coastal lowland areas especially vulnerable.
 
Evidence shows events like subduction of Cocos plate has caused widespread damage and up to 1m of coseismic coastal uplift. Such deformation is recorded by emergent marine terraces at the coast, and by uplifted alluvial fill within interior valleys. The frequent occurrence of earthquakes is caused by the rapid convergence rate of Cocos plate and Caribbean plate, which makes the land particularly sensitive to the tectonic movements. Evidence of 3mm/yr sea rise also suggests the potential increase of vulnerable coastal shorelines.
Increase in coastal shorelines


Landscape of Costa Rica in 10,000 years
We should be expecting new and active volcanoes replacing where the old volcanoes are today in 10,000 years from now. Although Costa Rica is a small country, the population of volcanoes is impressive. Many active volcanoes in the country are caused by the NE subduction of the Pacific tectonic plate under the Caribbean plate.  Some of the most active volcanoes are Arenal, Poas and Irazu volcanoes.
The current abrupt and violent volcanic eruptions lead to the release of viscous magma, often results in the new cones. This leads us to believe that within 10,000 years, Costa Rica’s landscape will have new and active volcanoes replacing today’s old volcanoes.
caldera volcano
 

Landscape of Costa Rica in 1,000,000 years
In the next million years, one can be expecting the global shift of Costa Rica due to the plate convergence. Findings show that subduction zone is converging, which will result in the movement of geographical location of Costa Rica. Base on the current trend, my guess is that the shift will be toward the north, from the Central America to North America, eventually locates in a coastal city in either America or Mexico.  
Northward shift in a million years


Costa Rica is small but beautiful country that has a dynamic landscape. In 1000 years, the coastal shorelines will increase; in 10,000 years, there would be many new and active volcanoes; and in a million years, it is going to shift towards the north.


Image Sources:
http://geostudies2012.blogspot.com/2012/05/lovely-looking-landscapes.html
http://www.bestourism.com/items/di/1147?title=Costa-Rica&b=178
http://www.eoearth.org/article/National_Assessment_of_Shoreline_Change:_New_England_and_Mid-Atlantic_Coasts
http://www.costaricantimes.com/briefly-the-volcanoes-of-costa-rica/12231
http://www.nature.org/newsfeatures/magazine/magazine-forever-costa-rica.xml

Content Sources:
http://geography.about.com/library/cia/blccostarica.htm
http://www.csupomona.edu/~marshall/costa_rica_reading/Marshall_07_AGU_abs_Nicoya.pdf
 

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