Norte Chico, Chile


Norte Chico, Chile
Nevado de Incahuasi
Agriculture in Elqui valley
Cerro Tololo
Goat husbandry is common through Norte Chico, however it produces severe erosion and desertification. Image from upper Limarí River
Agriculture in Elqui valley

The Norte Chico (Small North, Near North) is one of the five natural regions on which CORFO divided continental Chile in 1950. Its northern border is formed by the limit with the Far North, on west lies the Pacific Ocean, by the east the Andes mountains and Argentina, and by the south the Zona Central natural region. Although from a strictly geographic point of view, this natural region corresponds to the Chilean territory comprised between the rivers Copiapó and Aconcagua, traditionally Norte Chico refers to the zone comprising the regions of Atacama and Coquimbo. This natural region was home to the Diaguita people.

Contents

Geography

The near north (Norte Chico) extends from the southern border of the Atacama Desert 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 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 during the summer and about 12 °C 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. The slopes of the Andes are precipitous, the general surface is rough, and in the north the higher ground and coast are still barren.

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, Valdivian temperate rainforest develop as the vegetation precipitates the vapor in the form of a misty rain. Notable examples can be found in the Bosque de Fray Jorge National Park. 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.

Norte Chico is a highly mountainous district where distinct ranges or elongated spurs cross the country from the Andes to the coast, forming transverse valleys of great beauty and fertility. The most famous of these is the Elqui Valley. The 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 (Chilean laws defines the pisco as a drink produced in the Near North). The cultivation of the soil becomes possible, at first through irrigation and then with the aid of light periodical rains.

Some areas of Norte Chico feature a very dry air and negligible cloud cover, which make them an excellent location for telescopes. Notable astronomical observatories in the district include Cerro Tololo Inter-American Observatory and La Silla Observatory.

The Andes of Norte Chico are home to the first, second and fourth mountain highest in Chile. Corresponding respectively to Ojos del Salado, Nevado Tres Cruces and Nevado de Incahuasi.

Hydrography

Rivers

The principal rivers of this natural region are Copiapó, Huasco, Elqui, Limarí and Choapa. The Copiapó, which once discharged into the sea, is now practically exhausted in irrigating a small fertile valley in which stands the city of that name. The Copiapó and Huascohave comparatively short courses, but they receive a considerable volume of water from the higher sierras. The latter is also used to irrigate a small, cultivated valley. The rivers of the region of Coquimbo (the Elqui, Limarí and Choapa) exist under less arid conditions, and like those of the northern portion of the Valparaíso Region (namely: Petorca, La Ligua and Aconcagua), are used to irrigate a much larger area of cultivated territory.

See also

References


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