Application of discriminant function analysis and change-point problem in dating volcanic ashes

Lee, B.W.; Bacon Shone, J. 'Application of discriminant function analysis and change-point problem in dating volcanic ashes' a CODAWORK’05. Girona: La Universitat, 2005 [consulta: 12 maig 2008]. Necessita Adobe Acrobat. Disponible a Internet a: http://hdl.handle.net/10256/707

dc.identifier.isbn

84-8458-222-1

dc.identifier.uri

http://hdl.handle.net/10256/707

dc.description.abstract

The application of Discriminant function analysis (DFA) is not a new idea in the study of tephrochrology. In this paper, DFA is applied to compositional datasets of two different types of tephras from Mountain Ruapehu in New Zealand and Mountain Rainier in USA. The canonical variables from the analysis are further investigated with a statistical methodology of change-point problems in order to gain a better understanding of the change in compositional pattern over time. Finally, a special case of segmented regression has been proposed to model both the time of change and the change in pattern. This model can be used to estimate the age for the unknown tephras using Bayesian statistical calibration

dc.description.sponsorship

Geologische Vereinigung; Institut d’Estadística de Catalunya; International Association for Mathematical Geology; Patronat de l’Escola Politècnica Superior de la Universitat de Girona; Fundació privada: Girona, Universitat i Futur; Càtedra Lluís Santaló d’Aplicacions de la Matemàtica; Consell Social de la Universitat de Girona; Ministerio de Ciencia i Tecnología.cat

dc.format.mimetype

application/pdf

dc.language.iso

eng

dc.publisher

Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada

dc.rights

Tots els drets reservats

dc.subject

Calibratge

Estadística bayesiana

dc.title