Ultraviolet digital imaging of volcanic plumes : implementation and application to magmatic processes at basaltic volcanoes

xvii Chapter 1: Introduction1 1.1 The role of gas in volcanism 1 1.2 Measurement of volcanic gases 2 1.2.1 Direct sampling 3 1.2.2 Satellite measurements 4 1.2.3 Ground-based remote sensing 4 1.2.3.1 COSPEC 5 1.2.3.2 Miniature DOAS-based spectrometers 6 1.2.3.3 UV cameras 7 1.3 Objectives 11 1.4 Study sites 12 1.4.1 Fuego volcano, Guatemala 12 1.4.1.1 Geologic setting 12 1.4.1.2 Recent volcanic activity 13 1.4.1.3 Previous Studies 14 1.4.2 Kilauea volcano, Hawaii 15 1.4.2.1 Geologic setting 15 1.4.2.2 Recent volcanic activity 16 1.4.2.3 Previous and Relevant Studies 17 1.4.2.3.1 Gas studies at Kilauea 17 1.4.2.3.2 Seismo-acoustic studies at Kilauea 18 1.4.2.3.3 Integration of gas and geophysics at Kilauea 20 1.5 Dissertation format 21 1.6 References 21