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Preliminary results from seismic monitoring at Nyiragongo Volcano (Democratic Republic Of Congo) through telemetered seismic network, Goma Volcano Observatory
Author(s)
Language
English
Obiettivo Specifico
1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
Status
Published
JCR Journal
N/A or not JCR
Peer review journal
Yes
Title of the book
Issue/vol(year)
2/50 (2009)
Pages (printed)
117-127
Issued date
June 2009
Alternative Location
Abstract
Following the January 17, 2002 catastrophic eruption of the Nyiragongo Volcano (Democratic Republic of Congo) located in the western branch of the East African Rift, a great effort has been devoted to the seismic surveillance of this volcanic area. The 2002 eruption destroyed one/tenth of the city of Goma, leaving more than 100,000 homeless. In order to correctly monitor the seismic activity at Nyiragongo volcano for both scientific and civil defence purposes, the Istituto Nazionale di Geofisica e Vulcanologia in cooperation with GVO (Goma Volcanological Observatory), between November 2003 and May 2004 installed a new telemetered seismic network consisting of seven digital stations. The network is operational and seismic signals are continuously recorded at the GVO. In this study, we focus mainly on two aspects: (1) the deployment, in the field, of this new digital seismic network and the related real-time data acquisition system, and (2) the first results from a preliminary data analysis based on 6-month seismic recordings. Based on the waveforms and spectral analysis, long-period and very long period events (both, tectonic and volcanic-tectonic earthquakes), have been detected. Furthermore, we succeeded in locating more than 100 earthquakes. These results should strongly encourage the use of such a network data for seismotectonic studies of the area.
References
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Chouet, B.; 1996: Long-period volcano seismicity: its source and use in eruption forecasting. Nature 380, 309–316.
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International Seismological Centre (ISC) 2008: On-line Bulletin, http://www.isc.ac.uk, Internatl. Seis. Cent., Thatcham, United Kingdom
Komorowski J. C., D. Tedesco, M. Kasereka, P. Allard, P. Papale, O. Vaselli, J. Durieux, P. Baxter, M. Halbwachs, M. Akumbe, B. Baluku, P. Briole, M. Ciraba, J-C Dupin, O. Etoy, D. Garcin, H. Hamaguchi, N. Houlié, K. S. Kavotha, A. Lemarchand, J. Lockwood, N. Lukaya, G. Mavonga, M. de Michele, S. Mpore, K. Mukambilwa, F. Munyololo, C. Newhall, J. Ruch, M. Yalire, M. Wafula, 2004: The January 2002 flank eruption of Nyiragongo volcano (Democratic Republic of Congo): chronology, evidence for a tectonic rift trigger, and impact of lava flows on the city of Goma. Acta Volcanologica, 15, 127-61.
Lahr, J. C.; 1989: HYPOELLIPSE/Version 2.0: a computer program for determining local earthquake hypocentral parameters, magnitude, and first motion pattern. U. S. Geol. Surv. Open File Rep., 95, 89-116.
Mavonga T., Kavotha S. K., Lukaya F., Etoy O., Durieux J.; 2006: Seismic activity prior to the May 8, 2004 eruption of volcano Nyamuragira, Western Rift Valley of Africa. Journal of Volcanology and Geothermal Research, 158, 355–360.
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Platz T., Foley S. F. and André L.; 2004: Low-pressure fractionation of the Nyiragongo volcanic rocks, Virunga Province, D.R. Congo. Journal of Volcanology and Geothermal Research, 136, 3-4, 269-295.
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Tedesco, D., Badiali, L., Boschi, E., Papale, P., Tassi, F., Vaselli, O., Kasereka, C., Durieux, J., Denatale, G., Amato, A., Cattaneo, M., Ciraba, H., Chirico, G., Delladio, A., Demartin, M., Favalli, G., Franceschi, D., Lauciani, V., Mavonga, G., Monachesi, G., Pagliuca, N.M., Sorrentino, D., and Yalire, M.; 2007a: Cooperation on Congo Volcanic and Environmental Risks. Eos, Transactions, American Geophysical Union, v. 88, no. 16, p. 177, 181.
Tedesco D., O. Vaselli O., Papale P., Carn S. A., Voltaggio M., Sawyer G. M. Durieux J., Kasereka M. and Tassi F., 2007b: January 2002 volcano-tectonic eruption of Nyiragongo volcano, Democratic Republic of Congo. Journal of Geophysical Research, Vol. 112, B09202, doi:10.1029/2006JB004762.
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Zana, N., Tanaka, K., Kasahara, M., 1992. Main geophysical features related to the Virunga zone, Western Rift, and their volcanological implications. Tectonophysics 209, 255–257.
Chouet, B.; 1996: Long-period volcano seismicity: its source and use in eruption forecasting. Nature 380, 309–316.
Chouet, B.; 2003: Volcano Seismology. Pure and Applied Geophysics, 160, 739-788.
International Seismological Centre (ISC) 2008: On-line Bulletin, http://www.isc.ac.uk, Internatl. Seis. Cent., Thatcham, United Kingdom
Komorowski J. C., D. Tedesco, M. Kasereka, P. Allard, P. Papale, O. Vaselli, J. Durieux, P. Baxter, M. Halbwachs, M. Akumbe, B. Baluku, P. Briole, M. Ciraba, J-C Dupin, O. Etoy, D. Garcin, H. Hamaguchi, N. Houlié, K. S. Kavotha, A. Lemarchand, J. Lockwood, N. Lukaya, G. Mavonga, M. de Michele, S. Mpore, K. Mukambilwa, F. Munyololo, C. Newhall, J. Ruch, M. Yalire, M. Wafula, 2004: The January 2002 flank eruption of Nyiragongo volcano (Democratic Republic of Congo): chronology, evidence for a tectonic rift trigger, and impact of lava flows on the city of Goma. Acta Volcanologica, 15, 127-61.
Lahr, J. C.; 1989: HYPOELLIPSE/Version 2.0: a computer program for determining local earthquake hypocentral parameters, magnitude, and first motion pattern. U. S. Geol. Surv. Open File Rep., 95, 89-116.
Mavonga T., Kavotha S. K., Lukaya F., Etoy O., Durieux J.; 2006: Seismic activity prior to the May 8, 2004 eruption of volcano Nyamuragira, Western Rift Valley of Africa. Journal of Volcanology and Geothermal Research, 158, 355–360.
McNutt S. R.; 2005: Volcanic seismology. Annual Review of Earth and Planetary Sciences, vol.33, pp.461-491.
Platz T., Foley S. F. and André L.; 2004: Low-pressure fractionation of the Nyiragongo volcanic rocks, Virunga Province, D.R. Congo. Journal of Volcanology and Geothermal Research, 136, 3-4, 269-295.
Salvaterra L., Pintore S., and Badiali L.; 2007: La rete sismologica basata su stazioni Gaia, Rapporti Tecnici INGV, 68, 1-26.
Simkin T., Siebert L., McClelland L., Bridge D., Newhall C., Latter J.H.; 1981: Volcanoes of the World. Hutchinson Ross, Pa. Usa, pp. 233.
Tazieff, H.; 1979: Nyiragongo: The Forbidden Volcano. Barron's Educational Series, 288 pp. ISBN 0-8120-5296-X.
Tedesco, D., Badiali, L., Boschi, E., Papale, P., Tassi, F., Vaselli, O., Kasereka, C., Durieux, J., Denatale, G., Amato, A., Cattaneo, M., Ciraba, H., Chirico, G., Delladio, A., Demartin, M., Favalli, G., Franceschi, D., Lauciani, V., Mavonga, G., Monachesi, G., Pagliuca, N.M., Sorrentino, D., and Yalire, M.; 2007a: Cooperation on Congo Volcanic and Environmental Risks. Eos, Transactions, American Geophysical Union, v. 88, no. 16, p. 177, 181.
Tedesco D., O. Vaselli O., Papale P., Carn S. A., Voltaggio M., Sawyer G. M. Durieux J., Kasereka M. and Tassi F., 2007b: January 2002 volcano-tectonic eruption of Nyiragongo volcano, Democratic Republic of Congo. Journal of Geophysical Research, Vol. 112, B09202, doi:10.1029/2006JB004762.
Von Götzen A., 1894: The German exploration of the count von Götzen. In Geographical Movement, 9-12-, p.107
Vunganai M., Hlatywayo D. J., Chapola L. S., Kebede F., Atakan K., Lombe D. K., Turyomurugyendo G., Tugume F: D., 1999: Seismic hazard assessment in eastern and Southern Africa; The Global Seismic Hazard Assessment Program (GSHAP) 1992-1999. Annali di Geofisica, 42, 6,
Zana, N., Tanaka, K., Kasahara, M., 1992. Main geophysical features related to the Virunga zone, Western Rift, and their volcanological implications. Tectonophysics 209, 255–257.
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