-The climate is hot, wet and very humid.
-The semi-equatorial location of Corcovado, only 8 degrees north of the Equator ensures the tropical climate. The annual average temperature is of 27.5 degrees Celsius, but daytime temperatures regularly reach 35 degrees.
Clouds loaded with rain over the forest canopy shower the Corcovado land with nutrients.
-Humidity is high throughout the year. The high amount of rainfall varies a bit with the lifting, Corcovado basin receives about 3500 mm of rain a year and the mountains that surround it can get 5000. Summits and higher ridges are thought to receiving up to 6000 mm of annual precipitation, rate that is among the wettest places on Earth. The latitude is below that where cyclonic storms occur and rarely experience strong winds.
There is a marked dry season from mid-December to mid-April season, perhaps the most pleasant time to visit the Park. The rainy season extends from mid-April to mid-
December; rains were torrential, but only between September and November.
Corcovado National Park focuses on a wide plain of lowlands in the western area of the Osa Peninsula, stands out with features such as the prominent 1000 hectares of fresh water of the Corcovado lagoon comprising a swamp which is replaced by a seasonal grassland.
-The land forming the Corcovado National Park is the last that arose above the sea level just two million years ago, relatively recent in geological terms. This very colorful geological history leaves its mark clearly on the biota and the environment.
-The oceanic crust dramatically affects the social and cultural environment, and current peninsular lifting rates are among the highest rates worldwide, contributing to the enlargement of the mountains by increasing erosion by the same cut, which is the result of the rapid lifting.
-The geological history of the Central American isthmus is controlled by the interaction of several tectonic plates through geological times, including the North American plate, the Caribbean plate, the South American plate, and Cocos plate; approximately 60 million years ago during the Cretaceous period, when dinosaurs roamed the continents and seas of Earth.
-At that time, the Caribbean plate and then the plate located in the Pacific Ocean, began a migration to the northeast between the lands of North and South America. At the same time, the Pacific plate, to the West of the Caribbean plate in the Pacific Ocean, began a migration to the Northeast.
-Costa Rica and Panama, are the result of the action between the Cocos - Nazca plates (much faster than the Caribbean plate).
-Almost all what the actual Costa Rica is came about 28 million years ago during the Oligocene period, by action of the Nazca and Cocos plates.
-The first appearance of the Osa Peninsula occurred approximately at the same time from the Oligocene by subduction as a result of thrust faults.
The creation of the Corcovado National Park, allows thousands of species of flora and fauna to be under the protection of the government. Besides, surrounding villages close to the area enjoy the benefits of promoting the creation of tourist services, research and protection.
-Subsidence and uplift occurred recently 2 million years ago at the end of the Pliocene. That's why it's easy to find modern sea shells embedded at the top of the mountains of Osa, in marine sedimentary rocks in the old oceanic crust, rock that is also widely exposed in the peninsula.
-Unlike sequences of ofiolitos in South America, the Peninsula of Osa and Burica peninsula are the only ones that led the gold mineralization.
-Active participation of subduction off the coast of the southwest of the Peninsula. The underwater Ridge rises from abyssal depths to an average of 2.5 km on the bottom of the ocean and extends from the vicinity of the Osa Peninsula on the southwest coast hundreds of kilometres and includes Cocos Island, the only place where this crest of sea mounts (geologically similar to the Hawaiian Islands) breaks the surface at sea level.
-Subduction cause rising exaggerated with respect to the regional average - high rate of highest elevation in the world, which dissects rivers aggressively at the Earth's surface and steep mountain slopes creates the increase in the incidence of earthquakes in the area.
Ancient volcanic activity remains spread out along the Pacific coastline, visibly in Corcovado
Brown pelicans rock perching on volcanic material remains. San Pedrillo parkranger station.
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