HR: 0800h
AN: V21C-0608    [Abstracts]
TI: Seismic Signals of the 2005 Explosive Events at Volcan de Fuego, Mexico.
AU: * Nunez-Cornu, F J
EM: pacornu77@gmail.com
AF: Centro de Sismologia y Volcanologia de Occidente, Universidad de Guadalajara, Av. Universidad 203, Del. Ixtapa, Puerto Vallarta, Jal 48280 Mexico
AU: Vargas-Bracamontes, D M
EM: marsden77@gmail.com
AF: Centro de Sismologia y Volcanologia de Occidente, Universidad de Guadalajara, Av. Universidad 203, Del. Ixtapa, Puerto Vallarta, Jal 48280 Mexico
AU: Suarez-Plascencia, C
EM: csuarez@cencar.udg.mx
AF: Centro de Sismologia y Volcanologia de Occidente, Universidad de Guadalajara, Av. Universidad 203, Del. Ixtapa, Puerto Vallarta, Jal 48280 Mexico
AB: The current eruptive process of Volcan de Fuego (also known as Colima Volcano), started in the second semester of 1998, has presented several intermittent effusive and explosive phases. Since early 2005, a sequence of explosive events with VEI less or equal than 3 occured, the behavior of such explosive activity has been similar to that presented by the volcano in 1903. Most of the explosive events has been recorded by the seismic digital three components stations operated by the University of Guadalajara and Jalisco Civil Defense. These signals have been recorded not only by stations located on the volcanic edifice, but also by the stations BSSJ (San Sebastian del Oeste) and MCUJ (Minas del Cuale) located at 184 and 182 km in the northern coast of Jalisco, respectively. These stations recorded the seismic signal and the sonic wave. The origin times of the explosions were calculated using the sonic wave, also the sound velocity at the explosion time. Velocities of the seismic waves between the volcano and the seismic stations were also evaluated. Finally, the magnitude of the seismic signals and the energy of the sonic waves were calculated and compared with the size of the explosions reported by other authors.
DE: 7280 Volcano seismology (8419)
DE: 7294 Seismic instruments and networks (0935, 3025)
DE: 8419 Volcano monitoring (7280)
DE: 8428 Explosive volcanism
DE: 8494 Instruments and techniques
SC: Volcanology, Geochemistry, Petrology [V]
MN: Fall Meeting 2005