Revisión de aplicaciones del análisis wavelet en parámetros magnéticos de sedimentos del Holoceno, sur de Argentina
Review of applied wavelet analysis in magnetic parameters of Holocene sediments, southern Argentina
Luiggina Cappellotto1,*, María Julia Orgeira1, Víctor Manuel Velasco Herrera2
1 CONICET, Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina.
2 Instituto de Geofísica, Observatorio de Radiación Solar, Universidad Nacional Autónoma de México.
* Autor para correspondencia: (L. Cappellotto) This email address is being protected from spambots. You need JavaScript enabled to view it.
How to cite this article:
Cappellotto, L., Orgeira, M.J., Velasco Herrera, V.M., 2024, Revisión de aplicaciones del análisis wavelet en parámetros magnéticos de sedimentos del Holoceno, sur de Argentina: Boletín de la Sociedad Geológica Mexicana, 76 (3), A260424. http://dx.doi.org/10.18268/BSGM2024v76n3a260424
Manuscript received: October 20, 2023; corrected manuscript received: April 20, 2023; manuscript accepted: April 26, 2023.
ABSTRACT
The use of mathematical and statistical analysis tools in variables measured in geological records by geophysical methods and related to various natural processes, is important to analyze periodicities at different scales and assess relationships between different forcing agents. Thus, the analysis of the variations of the geomagnetic field (GF) is of particular interest in providing knowledge about its behavior. In this review, we summarize case studies in which these analyses were applied to directional parameters of the GF and magnetic properties of sediments in time series spanning the Holocene. The periodicities found reflect forcings that could be interacting with the GF. Such is the case of periodicities related to a fundamental solar mode and climatic variations in the GF directional parameter record. This fact suggests, on the one hand, that the GF could be a climatic forcing and, on the other hand, that the same external forcing to the planet affects the GF and the climate. Another case study presented shows how magnetic properties, measured in sedimentary sequences sampled at high resolution, were useful for the indirect determination of environmental changes, as well as of the energetic fluctuations of the transport agents involved, in this case, the wind.
Keywords: mathematical and statistical analysis, periodicities, geomagnetic field, magnetic parameters.
