Repositorio Digital Marítimo, Fluvial y Costero

Maturana, Jenny and Bello, Mónica and Manley, Michelle. (2004). History and description of “El Niño, Southern Oscillation” phenomenon.. El Niño-La Niña 1997-2000. Sus Efectos en Chile.. pp. 13-27.

graspcl_956-235-024-X_2004_13-27.pdf Disponible bajo licencia Creative Commons Attribution Non-commercial Share Alike. Download (833kB)

Abstract

El Niño-Southern Oscillation (ENSO) is a natural climatic event that takes place in the central equatorial pacific. During the warm phase of ENSO, known as El Niño, the sea surface temperature (SST) rises, and the easterly winds become weaker than average on the eastern side of the Pacific ocean. These anomalous conditions generate strong rainfalls and changes in the weather and fisheries in the countries near the South Eastern Pacific, as well as in other parts of the world. The opposite phase or cold phase of ENSO is known as La Niña, and it is characterised by presenting colder SST’s than normal, an intensification of the easterly winds on the eastern side of the Pacific ocean, and periods of droughts. In Chile, the last strong warm El Niño ENSO phase took place during 1997-1998, and was followed immediately by a cold phase La Niña during 1998-1999. This El Niño event was one of the most intense in the last two decades, and it caused alterations in the fisheries and severe floods in the central part of Chile. A general description of the El NiñoSouthern Oscillation based on a profound bibliographic research is made in this article, illustrating the atmospheric and oceanic factors that influence the development of a El Niño warm phase or a La Niña cold phase.

[error in script]

Item Type:	Article
Uncontrolled Keywords:	El Niño, La Niña, vientos alisios, presión atmosférica, precipitación, Temperatura, Superficial del Mar, termoclina, nivel del mar, surgencia, ondas
Geographical coverage :	Chile
Depositing User:	Alianza Regional del Sistema Mundial de Observación de los Océanos (GOOS) para el Pacífico Sudeste - GRASP
ISSN:	956-235-024-X
Official URL:	http://www.cona.cl/pub/detalle_cientifica.php?pub=...

Actions (login required)

View Item