Aeromagnetic anomalies and structure of the Iztaccíhuatl- Popocatépetl volcanic region in Central Mexico

Popocatépetl volcano is characterized by a high amplitude dipolar anomaly that is normally polarized and centered on the summit cone. The anomaly shows the effects of topographic relief and of major fault zones. Similar characteristics are docu- mented over the Iztaccíhuatl volcanic complex, where a...

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Bibliographic Details
Authors: Urrutia-Fucugauchi, J., Martínez-Pepin, N., Hernández Pérez, I., Arciniega-Ceballos, A., López-Loera, H., Flores-Ruiz, J. H., Anaya, C.
Format: article
Status:Published version
Publication Date:2002
Country:México
Institution:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Repository:Geofísica Internacional
Language:Spanish
OAI Identifier:oai:revistagi.geofisica.unam.mx:article/762
Online Access:http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/762
Access Level:Open access
Keyword:Estudio aeromagnético
estructura volcánica
volcán Popocatépetl
centro de México
Aeromagnetic survey
volcanic structure
Popocatépetl volcano
Central Mexico
Description
Summary:Popocatépetl volcano is characterized by a high amplitude dipolar anomaly that is normally polarized and centered on the summit cone. The anomaly shows the effects of topographic relief and of major fault zones. Similar characteristics are docu- mented over the Iztaccíhuatl volcanic complex, where a large composite dipolar anomaly is correlated with topography and with effects of deeper-seated source bodies. The dipolar anomaly is normally polarized over the summit elevations, with superimposed lower amplitude anomalies over the volcano flanks. An aeromagnetic survey over the adjacent volcanic and sedimentary terrains to the east and south of the Iztaccíhuatl-Popocatépetl complex also reflect the surface and deep geological features, with high- amplitude, high-frequency anomalies over the volcanic units and small volcanoes and low-amplitude, long-wavelength anomalies over the volcano-sedimentary deposits. The aeromagnetic survey illustrates the potential of aerogeophysical methods in studying volcanic structures over abrupt topography and undergoing active eruptive phases.

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