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- Geochemical and short-period Rayleigh wave dispersion measurements as evaluation tools to estimate Madeira Island magma depthsPublication . Caldeira, Rita; Matos, Catarina; Rosa, Carlos J. P.; Silveira, Graça; Ribeiro, Maria Luísa; Matias, Luís; Dias, Nuno; Krueger, Frank; Nunes, Joana; Rosa, Diogo
- Geochemical and short-period Rayleigh wave dispersion measurements as evaluation tools to estimate Madeira Island magma chambers depthsPublication . Caldeira, Rita; Matos, Catarina; Rosa, Carlos J. P.; Silveira, Graça; Ribeiro, Maria Luísa; Matias, Luís; Dias, Nuno; Krueger, Frank; Nunes, Joana; Rosa, Diogo
- Upper crustal structure of Madeira Island revealed from ambient noise tomographyPublication . Matos, Catarina; Silveira, Graça; Matias, Luís; Caldeira, Rita; Ribeiro, Maria Luísa; Dias, Nuno; Krüger, Frank; Bento dos Santos, TelmoWe present the first image of the Madeira upper crustal structure, using ambient seismic noise tomography. 16 months of ambient noise, recorded in a dense network of 26 seismometers deployed across Madeira, allowed reconstructing Rayleigh wave Green's functions between receivers. Dispersion analysis was performed in the short period band from 1.0 to 4.0 s. Group velocity measurements were regionalized to obtain 2D tomographic images, with a lateral resolution of 2.0 km in central Madeira. Afterwards, the dispersion curves, extracted from each cell of the 2D group velocity maps, were inverted as a function of depth to obtain a 3D shear wave velocity model of the upper crust, from the surface to a depth of 2.0 km. The obtained 3D velocity model reveals features throughout the island that correlates well with surface geology and island evolution.
- Short-period Rayleigh wave dispersion measurements as an evaluation tool to estimate Madeira heat source depthsPublication . Matos, Catarina; Silveira, Graça; Matias, Luís; Caldeira, Rita; Rosa, Carlos J. P.; Ribeiro, Maria Luísa; Dias, Nuno; Krueger, Frank; Nunes, Joana; Rosa, Diogo
- Análise da dispersão das ondas de Rayleigh na Madeira, a partir do ruído ambiente como ferramenta de avaliação do potencial geotérmicoPublication . Matos, Catarina; Silveira, Graça; Matias, Luís; Caldeira, Rita; Rosa, Carlos J. P.; Ribeiro, Maria Luísa; Dias, Nuno; Krueger, Frank; Nunes, Joana; Rosa, Diogo
- Geochemical and short-period Rayleigh wave dispersion measurements as evaluation tools to estimate Madeira Island magma chambers depthsPublication . Caldeira, Rita; Matos, Catarina; Rosa, Carlos J. P.; Silveira, Graça; Ribeiro, Maria Luísa; Matias, Luís; Dias, Nuno; Krueger, Frank; Nunes, Joana; Rosa, Diogo