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IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy (S) - IASPEI - International Association of Seismology and Physics of the Earth's Interior JSS010 Oral Presentation 2071 Monitoring slow unrest of Taal Volcano (Philippines) using carbon monoxide from MOPITT satellite Mr. Senthilkumar Jambulingam CIVIL ENGINEERING STUDENT IAVCEI Ramesh P. Singh, J. Zlotnicki, Y. Sasai, J. Sincioco Taal volcano (121E, 14N) is located 60 km south of Manila, Philippines. Since 1572, 33 eruptions have occurred. The volcano is considered as one of the most devastating volcanoes in Philippines, due to the sudden and explosive eruptions. Taal volcano shows new phases of low but noticeable activities since the last 1976-1977 eruption. Between 1992 and 1994, seismicity was strongly found to increase and was accompanied by ground deformations (several tens of cm) and surface fissures. After October 2004, seismicity sporadically occurs and several earthquakes are felt. Geysering phenomena was finally observed in November 2006. The 311 m high Taal stratovolcano is located in a large pre-historical caldera filled by a lake, and the crater of the volcano itself is filled by an acidic lake of about 1.2 km in diameter. These hydrologic characteristics, associated with dikes injection below the volcano generate a very powerful hydrothermal activity which partly controls the onset of eruptions. Efforts have been made to use remote sensing technique since it will be difficult to access the area close to the volcano, in case of eruption. Analysis of multi sensor parameters available from optical and microwave sensors every day have been carried out. Unfortunately, up to now, these sensors have low resolution. As a result it is difficult to monitor small changes in land surface and meteorological parameters. However, the gases emitted from the volcano bring changes in the chemistry of the atmosphere over the volcano and the surrounding region. The multi sensor parameters which provide information about the land, meteorological and atmospheric parameters have been analyzed during the period 2001 to 2007. Due to low resolution of sensors not much changes in various parameters are noticed. The MOPITT (Measurement of Pollution in the Troposphere) sensor onboard Terra satellite daytime and nighttime vertical carbon monoxide (CO) mixing ratio data over the volcano shows significant variations in mixing ratio from ground up to 500 hPa pressure level. The correlation of ground parameters observed near the Taal volcano and vertical carbon monoxide mixing ratio confirms the slow increase of activity of Taal volcano. Keywords: volcano, carbon monoxide, mopitt satellite
IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy (S) - IASPEI - International Association of Seismology and Physics of the Earth's Interior JSS010 Oral Presentation 2072 Possible influence of seismic activity on the propagation of anomalous whistlers recorded in space Dr. Livio Conti Dep. of Physics, Roma Tre University Researcher Aurora Buzzi, Michel Parrot, Jean-Louis Pincon, Vittorio Sgrigna, David Zilpimiani An analysis reported in literature on whistlers-waves detected by ground-based observatories, has suggested the possible influence of seismo-electromagnetic emissions on the propagation of anomalous whistlers. In the present work a geographic and temporal correlation between earthquakes of moderate and large magnitude and anomalous whistlers has been investigated but using data collected in space by the DEMETER satellite. Both method of analysis and preliminary results on one year data will be presented and discussed. Keywords: whistler, earthquake, demeter
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IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy<br />
(S) - <strong>IASPEI</strong> - International Association of Seismology and Physics of the Earth's<br />
Interior<br />
JSS010 Oral Presentation 2072<br />
Possible influence of seismic activity on the propagation of anomalous<br />
whistlers recorded in space<br />
Dr. Livio Conti<br />
Dep. of Physics, Roma Tre University Researcher<br />
Aurora Buzzi, Michel Parrot, Jean-Louis Pincon, Vittorio Sgrigna, David Zilpimiani<br />
An analysis reported in literature on whistlers-waves detected by ground-based observatories, has<br />
suggested the possible influence of seismo-electromagnetic emissions on the propagation of anomalous<br />
whistlers. In the present work a geographic and temporal correlation between earthquakes of moderate<br />
and large magnitude and anomalous whistlers has been investigated but using data collected in space<br />
by the DEMETER satellite. Both method of analysis and preliminary results on one year data will be<br />
presented and discussed.<br />
Keywords: whistler, earthquake, demeter