Mora M.M. auteur aut IRD Lesage P. auteur aut IRD Dorel J. auteur aut IRD Bard P.Y. auteur aut IRD Métaxian Jean-Philippe auteur aut IRD Alvarado G.E. auteur aut IRD Leandro C. auteur aut IRD text journalArticle eng text/pdf reformatted digital access By using data obtained with a linear array at Arenal volcano, we show that the H/V spectral ratio method can be profitably applied to detect site effects on volcanoes. Similar results are obtained when calculating spectral ratios with different types of seismo-volcanic signals (tremor, ambient noise, explosion quakes, LP events). We compare the H/V ratios with theoretical S-wave transfer functions calculated using velocity models obtained from seismic refraction studies. There is a good agreement when the H/V ratios display sharp peaks, indicating a close relationship between the ratios and the transfer function of the shallow structure. Furthermore, the main peaks of the spectral ratios are consistent with local amplification of seismic waves observed at the corresponding frequencies. specialized COSTA RICA 066SISMO 28 15 2991-2994 2001 0094-8276 https://www.documentation.ird.fr/hor/fdi:010083756 10.1029/2001GL013049 0094-8276 [F B010083756] https://www.documentation.ird.fr/hor/fdi:010083756 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2022-11/010083756.pdf IRD - Base Horizon / Pleins textes 2022-03-14 2022-11-09 fdi:010083756 fre