Quiet solar geomagnetic variations at observatories in symmetrical latitudes during a minimum of solar activity

Solar geomagnetic variations on quiet days (Sq), neglecting the small lunar contribution (L), are compared for Teoloyucan (geogr.lal 19°45', long. -99° 11') and La Quiaca (geogr.lat -22°06', long.-65°36’), located in the longitudinal sector of maximum difference between geographic and...

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Autores principales:	Van Zele, María Andrea, Schneider, Otto
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1993
Materias:	Geofísica variaciones geomagnéticas geomagnetic variations Sol sun
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/134387
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-134387
record_format	dspace
spelling	I19-R120-10915-1343872023-04-21T18:22:24Z http://sedici.unlp.edu.ar/handle/10915/134387 Quiet solar geomagnetic variations at observatories in symmetrical latitudes during a minimum of solar activity Van Zele, María Andrea Schneider, Otto 1993 2022-04-13T17:54:43Z en Geofísica variaciones geomagnéticas geomagnetic variations Sol sun Solar geomagnetic variations on quiet days (Sq), neglecting the small lunar contribution (L), are compared for Teoloyucan (geogr.lal 19°45', long. -99° 11') and La Quiaca (geogr.lat -22°06', long.-65°36’), located in the longitudinal sector of maximum difference between geographic and geomagnetic latitudes, the latter being 29,6° and -10,6°respectively. Given the manifest asymmetry, even during the equinoxes comparable data from Pilar (geogr.lat-31°40', long.-63°53'; geomagn.lat-20,40) are supplied. Noon values of the geomagnetic north component of Sq can be represented by a plane model including an electrojet centered al the dip equator and two ionospheric current systems of greater latitudinal extent Application of this model to the particular group of E-months (March/April-September/October) shows that the distance between the vortices of these current systems and the equator is greater in the northern hemisphere than in the southern. Merely geomagnetic causes cannot account for this discrepancy. El objetivo del trabajo es comparar las variaciones geomagnéticas diarias solares tranquilas (Sq), despreciando cualquier influencia lunar, de los observatorios Teoloyucan (lat. geog 19°45', long. geog.-99°l 1') y La Quiaca (lat. geog. -22°6', long. geog.- 65°36') en los que es máxima la diferencia entre la latitud geomagnética (29,6° el primero,-10,6° el segundo) y la geográfica. Dada la asimetría manifiesta aún durante los equinoccios, se comparan las variaciones con las obtenidas en el observatorio Pilar (lat. geog.-31°40’, long. geog-63°53', lat. geom.-20,4°). Ajustando los valores de mediodía de la componente geomagnética norte de Sq a un modelo plano constituido por un electrochorro centrado en el ecuador de inclinación y dos sistemas de corrientes ionosféricas más extendidos en latitud se halla que la distancia entre el ecuador y el vórtice de esos sistemas como así también la intensidad de la corriente ionosférica total durante los meses marzo-abril-setiembre-octubre son mayores en el hemisferio norte que en el austral. Material digitalizado en SEDICI gracias a la colaboración de la Facultad de Ciencias Astronómicas y Geofísicas (UNLP). Asociación Argentina de Geofísicos y Geodestas Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf 27-35
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Geofísica variaciones geomagnéticas geomagnetic variations Sol sun
spellingShingle	Geofísica variaciones geomagnéticas geomagnetic variations Sol sun Van Zele, María Andrea Schneider, Otto Quiet solar geomagnetic variations at observatories in symmetrical latitudes during a minimum of solar activity
topic_facet	Geofísica variaciones geomagnéticas geomagnetic variations Sol sun
description	Solar geomagnetic variations on quiet days (Sq), neglecting the small lunar contribution (L), are compared for Teoloyucan (geogr.lal 19°45', long. -99° 11') and La Quiaca (geogr.lat -22°06', long.-65°36’), located in the longitudinal sector of maximum difference between geographic and geomagnetic latitudes, the latter being 29,6° and -10,6°respectively. Given the manifest asymmetry, even during the equinoxes comparable data from Pilar (geogr.lat-31°40', long.-63°53'; geomagn.lat-20,40) are supplied. Noon values of the geomagnetic north component of Sq can be represented by a plane model including an electrojet centered al the dip equator and two ionospheric current systems of greater latitudinal extent Application of this model to the particular group of E-months (March/April-September/October) shows that the distance between the vortices of these current systems and the equator is greater in the northern hemisphere than in the southern. Merely geomagnetic causes cannot account for this discrepancy.
format	Articulo Articulo
author	Van Zele, María Andrea Schneider, Otto
author_facet	Van Zele, María Andrea Schneider, Otto
author_sort	Van Zele, María Andrea
title	Quiet solar geomagnetic variations at observatories in symmetrical latitudes during a minimum of solar activity
title_short	Quiet solar geomagnetic variations at observatories in symmetrical latitudes during a minimum of solar activity
title_full	Quiet solar geomagnetic variations at observatories in symmetrical latitudes during a minimum of solar activity
title_fullStr	Quiet solar geomagnetic variations at observatories in symmetrical latitudes during a minimum of solar activity
title_full_unstemmed	Quiet solar geomagnetic variations at observatories in symmetrical latitudes during a minimum of solar activity
title_sort	quiet solar geomagnetic variations at observatories in symmetrical latitudes during a minimum of solar activity
publishDate	1993
url	http://sedici.unlp.edu.ar/handle/10915/134387
work_keys_str_mv	AT vanzelemariaandrea quietsolargeomagneticvariationsatobservatoriesinsymmetricallatitudesduringaminimumofsolaractivity AT schneiderotto quietsolargeomagneticvariationsatobservatoriesinsymmetricallatitudesduringaminimumofsolaractivity
_version_	1765659849310339072

Quiet solar geomagnetic variations at observatories in symmetrical latitudes during a minimum of solar activity

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