dor_id: 4133323

506.#.#.a: Público

590.#.#.d: Los artículos enviados a la revista "Geofísica Internacional", se juzgan por medio de un proceso de revisión por pares

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Scientific Electronic Library Online (SciELO); SCOPUS, Dialnet, Directory of Open Access Journals (DOAJ); Geobase

561.#.#.u: https://www.geofisica.unam.mx/

650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: http://revistagi.geofisica.unam.mx/index.php/RGI

351.#.#.b: Geofísica Internacional

351.#.#.a: Artículos

harvesting_group: RevistasUNAM

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: https://revistas.unam.mx/catalogo/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1513/1633

100.1.#.a: Quinn, William H.; Zopf, David O.

524.#.#.a: Quinn, William H., et al. (1975). The southern oscillation, Equatorial Pacific anomalies and El Niño. Geofísica Internacional; Vol. 15 Núm. 4: Octubre 1, 1975; 327-353. Recuperado de https://repositorio.unam.mx/contenidos/4133323

245.1.0.a: The southern oscillation, Equatorial Pacific anomalies and El Niño

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1975

264.#.1.c: 1975-10-01

653.#.#.a: Índices de presión; Oscilación del sur; Anomalías; Pacífico Ecuatorial; Fenómeno El Niño; Pressure indices; Southern Oscillation; Anomalies; Equatorial Pacific; El Niño phenomenon

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1513

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1513

041.#.7.h: spa

520.3.#.a: Certain pressure indices (differences in sea level atmospheric pressure be tween Easter Island and Darwin, Australia and between Juan Fernández Island and Darwin), plotted as 12-month running mean values, were previously used for characterizing the Southern Oscillation and for monitoring and predicting significant equatorial Pacific ocean/atmosphere changes, including El Niño occurrences. The value of using additional pressure indices for these purposes is explored here. Since the primary interest was in changes over the Pacific, Darwin was used to represent the Indonesian equatorial low pressure center, but additional sites (Totegegie, Rapa and Tahiti) were used along the South Pacific subtropical ridge. In general, there is remarkable consistency between the trends of the various indices; however, on some occasions inflection points can be noted several months earlier when using one ridge site rather than another, and the amplitude of peaks and troughs in the indices is often much greater when using a particular ridge site. Three- and 6-month running means of the indices, which retain the regular annual cycle as well as the irregular interannual fluctuation, are used here to show the importance of phase relations between the two fluctuations in determining the intensity of anomalous developments. In the case of the unusual 1972 El Niño, the peaks of the two fluctuations were in phase in early 1971 and their troughs were in phase in mid-I972 so that a 14 mb drop in the 3-month running mean value of the Faster-Darwin index took place over an 18-month period. This indicated an extreme weakening of the southeast trade wind system, which we believe to be a causal factor for the severe 1972 event. In the subsequent 1975 event, the Southern Oscillation period shortened, and although the peaks of the two fluctuations were in phase the troughs were not; hence the degree of relaxation was limited and a weak event resulted. Additional evidence is presented to support a close relationship between the southeast trade system, as modified by the Southern Oscillation, and anomalous meteorological and oceanographic conditions in the equatorial Pacific.

773.1.#.t: Geofísica Internacional; Vol. 15 Núm. 4: Octubre 1, 1975; 327-353

773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI

022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169

310.#.#.a: Trimestral

300.#.#.a: Páginas: 327-353

264.#.1.b: Instituto de Geofísica, UNAM

doi: https://doi.org/10.22201/igeof.00167169p.1975.15.4.1011

handle: 00ffe9d385275a35

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2008-06-30 18:22:42.0

file_modification_date: 2023-02-03 19:05:14.0

file_creator: William H. Quinn

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245.1.0.b: The southern oscillation, Equatorial Pacific anomalies and El Niño

last_modified: 2023-06-20 16:00:00

license_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es

license_type: by-nc-sa

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