HR: 0800h
AN: GP41D-04    [Abstracts]
TI: Geomagnetic monitoring of the volcano Popocatepetl, Mexico in the ULF (Ultra Low Frequency) range, 2003-2006
AU: * Kotsarenko, A
EM: kotsarenko@geociencias.unam.mx
AF: Centro de Geociencias, UNAM, Queretaro, QRO, Mexico, Mexico
AU: Grimalsky, V
EM: vgrim@inaoep.mx
AF: CIICAp, UAEM, Cuernavaca, MOR, Mexico, Mexico
AU: Lopes Cruz Abeyro, J A
EM: lcabeyro@geociencias.unam.mx
AF: Centro de Geociencias, UNAM, Queretaro, QRO, Mexico, Mexico
AU: Siqueiros Alatorre, J
EM: jsiqueiros@uaem.mx
AF: FCT, UANL, Linares, NL, Mexico, Mexico
AU: Perez Enriques, R
EM: roman@geociencias.unam.mx
AF: Centro de Geociencias, UNAM, Queretaro, QRO, Mexico, Mexico
AU: Koshevaya, S
AF: CIICAp, UAEM, Cuernavaca, MOR, Mexico, Mexico
AU: Yutsis, V
EM: vyutsis@ccr.dsi.uanl.mx
AF: Instituto de Geofisica, Mexico D.F., Mexico, Mexico
AU: Valdes Gonzales, C
EM: carlosv@ollin.igeofcu.unam.mx
AF: FCT, UANL, Linares, NL, Mexico, Mexico
AU: Villegas Cerón, R A
EM: vyutsis@ccr.dsi.uanl.mx
AF: Instituto de Geofisica, Mexico D.F., Mexico, Mexico
AB: Results of ULF (Ultra Low Frequency) geomagnetic anomalies observed at Tlamacas station (Long. 261.37, Lat. 19.07), located in the vicinity (4 km) near volcano Popocatepetl (active volcano, Long. 261.37, Lat. 19.02), during the period 2003-2006 and their analysis are presented. The geomagnetic data were collected by a 3-axial fluxgate magnetometer designed at UCLA (University of California, Los Angeles, 1 Hz sampling rate frequency, GPS). Our analysis reveals some anomalies which are suspected to be generated by local volcanic origin: the EM background in the volcano is significantly noisier than in other reference stations; strong (up to 100 gamma), wide band and noise-like geomagnetic activity is detected in the H-component; some geomagnetic pulsations (without preferred polarization) are observed only at Tlamacas station. The mentioned monitoring can serve as another perspective tool to study volcanic geodynamical processes besides the traditional ones.
DE: 1512 Environmental magnetism
DE: 1517 Magnetic anomalies: modeling and interpretation
DE: 4275 Remote sensing and electromagnetic processes (0689, 2487, 3285, 4455, 6934)
DE: 8419 Volcano monitoring (7280)
DE: 8488 Volcanic hazards and risks
SC: Geomagnetism and Paleomagnetism [GP]
MN: 2007 Joint Assembly