Chile

Geography of Chile: Important Geographical Information about Chile

The geography of Chile is extremely diverse as the country extends from a latitude of 17° South to Cape Horn at 56° (if Chilean claims on Antarctica are included Chile would extend to the South Pole) and from the ocean on the west to Andes on the east.

Chile is situated in southern South America, bordering the South Pacific Ocean and a small part of the South Atlantic Ocean. Chile’s territorial shape is among the world’s most unusual. From north to south, Chile extends 4,270 km (2,653 mi), and yet it only averages 177 km (110 mi) east to west. On a map, it looks like a long ribbon reaching from the middle of South America’s west coast straight down to the southern tip of the continent, where it curves slightly eastward. Cape Horn, the southernmost point in the Americas, where the Pacific and Atlantic oceans turbulently meet, is Chilean territory. Chile’s northern neighbors are Peru and Bolivia, and its border with Argentina to the east, at 5,150 km (3,200 mi), is the world’s third longest.

The northern two-thirds of Chile lie on top of the telluric Nazca Plate, which, moving eastward about ten centimeters a year, is forcing its way under the continental plate of South America. This movement has resulted in the formation of the Peru-Chile Trench, which lies beyond a narrow band of coastal waters off the northern two-thirds of the country. The trench is about 150 km (93 mi) wide and averages about 5,000 m (16,404 ft) in depth. At its deepest point, just north of the port of Antofagasta, it plunges to 8,066 m (26,463 ft). Although the ocean’s surface obscures this fact, most of Chile lies at the edge of a profound precipice.

Much of Chile’s coastline is rugged, with surf that seems to explode against the rocks lying at the feet of high bluffs. This collision of land and sea gives way every so often to lovely beaches of various lengths, some of them encased by the bluffs. The Humboldt Current, which originates northwest of the Antarctic Peninsula (which juts into the Bellingshausen Sea) and runs the full length of the Chilean coast, makes the water frigid.

Chilean territory extends as far west as Polynesia. The best known of Chile’s Pacific Islands is Easter Island (Isla de Pascua, also known by its Polynesian name of Rapa Nui), with a population of 2,800 people. Located 3,600 km (2,237 mi) west of Chile’s mainland port of Caldera, just below the Tropic of Capricorn, Easter Island provides Chile a gateway to the Pacific. It is noted for its 867 monoliths (Moais), which are huge (up to twenty meters high) and mysterious, expressionless faces sculpted of volcanic stone. The Juan Fernández Islands, located 587 km (365 mi) west of Valparaíso, are the locale of a small fishing settlement. They are famous for their lobster and the fact that one of the islands, Robinson Crusoe Island, is where Alexander Selkirk, the inspiration for Daniel Defoe’s novel, was marooned for about four years.

Because Chile extends from a point about 625 km (388 mi) north of the Tropic of Capricorn to a point hardly more than 1,400 km (870 mi) north of the Antarctic Circle, within its territory can be found a broad selection of the Earth’s climates. For this reason, geographically it is possible to speak of several Chiles. The country usually is divided by geographers into five regions: the far north, the near north, central Chile, the south, and the far south. Each has its own characteristic vegetation, fauna, climate, and, despite the omnipresence of both the Andes and the Pacific, its own distinct topography.

The far north (Norte Grande), which extends from the Peruvian border to about 27° south latitude, is extremely arid. It contains the Atacama Desert, one of the driest areas in the world; in certain sections, this desert does not register any rainfall at all. Average monthly temperatures range at sea level between about 20.5 °C (68.9 °F) during the summer and about 14 °C (57.2 °F) during the winter. Most of the population lives in the coastal area, where the temperatures are more moderate and the humidity higher. Contrary to the image of monochrome barrenness that most people associate with deserts, the landscape is spectacular, with its crisscrossing hills and mountains of all shapes and sizes, each with a unique hue depending on its mineral composition, its distance from the observer, and the time of day.

The near north (Norte Chico) extends from the Copiapó River to about 32° south latitude, or just north of Santiago. It is a semiarid region whose central area receives an average of about 25 mm (0.98 in) of rain during each of the four winter months, with trace amounts the rest of the year. The near north is also subject to droughts. The temperatures are moderate, with an average of 18.5 °C (65.3 °F) during the summer and about 12 °C (53.6 °F) during the winter at sea level. The winter rains and the melting of the snow that accumulates on the Andes produce rivers whose flow varies with the seasons, but which carry water year round. Their deep transverse valleys provide broad areas for cattle raising and, most important, fruit growing, an activity that has developed greatly since the mid-1970s. Nearly all Chilean pisco is produced in the near north.

As in the far north, the coastal areas of the near north have a distinct microclimate. In those sections where the airborne moisture of the sea is trapped by high bluffs overlooking the ocean, temperate rain forests develop as the vegetation precipitates the vapor in the form of a misty rain. Because the river valleys provide breaks in the coastal elevations, maritime moisture can penetrate inland and further decrease the generally arid climate in those valleys. The higher elevations in the interior sections are covered with shrubs and cacti of various kinds.

Central Chile (Chile Central), home to a majority of the population, includes the three largest metropolitan areas—Santiago, Valparaíso, and Concepción. It extends from about 32° south latitude to about 37° south latitude. The climate is of the temperate Mediterranean type, with the amount of rainfall increasing considerably and progressively from north to south. In the Santiago area, the average monthly temperatures are about 19.5 °C (67.1 °F) in the summer months of January and February and 7.5 °C (45.5 °F) in the winter months of June and July; the average monthly precipitation is no more than a trace in January and February and 69.7 mm (3 in) in June and July. In Concepción, by contrast, the average monthly temperatures are somewhat lower in the summer at 17.6 °C (63.7 °F) but higher in the winter at 9.3 °C (48.7 °F), and the amount of rain is much greater: in the summer, Concepción receives an average of 0.8 inch (20 millimeters) of rain per month; in June and July, the city is pounded by an average of 10 inches (253 mm.) per month. The numerous rivers greatly increase their flow as a result of the winter rains and the spring melting of the Andean snows, and they contract considerably in the summer. The combination of abundant snow in the Andes and relatively moderate winter temperatures creates excellent conditions for Alpine skiing.

The southern portion of central Chile contains a mixture of some excellent agricultural lands, many of which were covered originally with old-growth forests. They were cleared for agriculture but were soon exhausted of their organic matter and left to erode. Large tracts of this worn-out land, many of them on hilly terrain, have been reforested for the lumber, especially for the cellulose and paper industries. New investments during the 1980s in these industries transformed the rural economy of the region. The pre-Andean highlands and some of the taller and more massive mountains in the coastal range (principally the Cordillera de Nahuelbuta) still contain large tracts of old-growth forests of remarkable beauty, some of which have been set aside as national parks. Between the coastal mountains and the ocean, many areas of central Chile contain stretches of land that are lower than the Central Valley and are generally quite flat. The longest beaches can be found in such sections.

The south is one of the rainiest areas in the world. One of the wettest spots in the region is Valdivia, with an annual rainfall of 2,535.4 mm (99.8 in). The summer months of January and February are the driest, with a monthly average precipitation of 67 mm (2.6 in). The winter months of June and July each produce on average a deluge of 410.6 mm (16.2 in). Temperatures in the area are moderate. In Valdivia, the two summer months average 16.7 °C (62.1 °F), whereas the winter months average 7.9 °C (46.2 °F).

The lakes in this region are remarkably beautiful. The snow-covered Andes form a constant backdrop to vistas of clear blue or even turquoise waters, as at Todos los Santos Lake. The rivers that descend from the Andes rush over volcanic rocks, forming numerous white-water sections and waterfalls. The vegetation, including many ferns in the shady areas, is a lush green. Some sections still consist of old-growth forests, and in all seasons, but especially in the spring and summer, there are plenty of wildflowers and flowering trees. The pastures in the northernmost section, around Osorno, are well suited for raising cattle; milk, cheese, and butter are important products of that area. All kinds of berries grow in the area, some of which are exported, and freshwater farming of various species of trout and salmon has developed, with cultivators taking advantage of the abundant supply of clear running water. The lumber industry is also important. A number of tourists, mainly Chileans and Argentines, visit the area during the summer.

Many of Chile’s distinctive animal species have been decimated as they have been pushed farther and farther into the remaining wilderness areas by human occupation of the land. This is the case with the huemul, a large deer, and the Chilean condor, the largest bird of its kind; both animals are on the national coat of arms. The remaining Chilean cougars, which are bigger than their California cousins, have been driven to isolated national parks in the south by farmers who continue to hunt them because they occasionally kill sheep and goats.

In the far south (Chile Austral), between 42° south latitude to Cape Horn, the Andes and the South Pacific meet. The continental coastline features numerous inlets and fjords, from which the mountains seem to rise straight up to great elevations. The rest of the land consists of literally thousands of islands forming numerous archipelagos interwoven with sometimes-narrow channels, which provide the main routes of navigation.

The far south contains large expanses of pastures that are often used for raising sheep, even though overgrazing is an issue in some areas. The area’s other main economic activity is oil and natural gas extraction from the areas around the Strait of Magellan. This strait is one of the world’s important sea-lanes because it unites the Atlantic and Pacific oceans through a channel that avoids the rough open waters off Cape Horn. The channel is perilous, however, and Chilean pilots guide all vessels through it.