Abstract
Yogyakarta urban area (500,000 inhab.) is located in Central Java on the fluvio-volcanic plain beside Merapi volcano, one of the most active of the world. Since the last eruption of Merapi in November 1994, the Code river, which goes across this city, is particularly threatened by lahars (volcanic debris flows). Until now, no accurate hazard map exists and no risk assessment has been done. Therefore, we drew a detailed hazard map (1/2,000 scale), based on morphometric surveys of the Code channel and on four scenarios of discharge. An additional risk assessment revealed that about 13,000 people live at risk along this river, and that the approximate value of likely loss is US $ 52 millions. However, the risk level varies between the urban suburbs.
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References
Beverage J.P. and Culbertson J.K., 1964: Hyperconcentrations of suspended sediment. Journal of the Hydraulics Division, America Society of Civil Engineering 90:HY6: 117-126.
Blaikie P., Cannon T., Davis I. and Wisner B., 1997: At Risk: People's Vulnerability and Disasters. Routledge, London.
Bourdier J.-L. and Abdurachman E.K., 2000: Observations of the distribution and field characteristics of the 22 November 1994 pyroclastic-flow deposits, Merapi volcano. In: Voight B. (ed.), Merapi Volcano, Java. Journal of Volcanological and Geothermal Research (in press).
Chow V.T., 1959: Open-Channel Hydraulics. McGraw-Hill Book Company, New York.
Drabek T.E., 1986: Human Response to Disaster: an Inventory of Sociological Findings. Springer-Verlag, New York.
J.I.C.A, (Japan International Cooperation Agency), 1980: Master Plan for Land Conservation and Volcanic Debris Control in the Area of Mt Merapi. Jakarta.
Jitousono T., Shimokawa E., Tsuchiya S., Haryanto and Djamal H., 1995: Debris flow following the 1984 eruption with pyroclastic flows in Merapi volcano, Indonesia. Proceedings Workshop on Erosion Control through Volcanic Hydrological Approach (WECVHA), January 10–11. Sabo Technical Center, Yogyakarta: 131-149.
Lavigne F., 1998: Les lahars du volcan Merapi, Java Central, Indonésie: déclenchement, budget sédimentaire, dynamique et zonage des risques associés (Lahars of Merapi volcano: initiation, sediment budget, dynamics, and related risk zonation). Thèse de Doctorat (PhD Diss.), Université Blaise Pascal, Clermont-Ferrand.
Lavigne F., Thouret J.C., Voight B., Suwa H. and Sumaryono A., 2000a: Lahar at Merapi volcano: an overview. In: Voight B. (ed.), Merapi Volcano, Central Java. Journal of Volcanology and Geothermal Research (in press).
Lavigne F., Thouret J.C., Suwa H., Voight B., Young K., Lahusen R., Marso J., Sumaryono A., Dejean M., Sayudi D.S. et Moch, 2000b: Instrumental lahar monitoring at Merapi volcano, Central Java, Indonesia. In: Voight B. (ed.), Merapi Volcano, Central Java. Journal of Volcanology and Geothermal Research (in press).
Maruyama Y., Ikeda K., Higurashi M. and Kitani Y., 1980: Applied study of geomorphological land classification on debris control planning in the area of Mt Merapi in central Java, Indonesia. Second poster session, 141, 10th International Conference of the International Cooperation Agency, Tokyo.
Nossin J.J. and R.S. Javelosa, 1996: Geomorphic Risk Zonation related to June 1991 eruptions of Mt Pinatubo, Luzon, Philippines. In: O. Slaymaker (ed.), Geomorphic Hazards. J. Wiley and Sons, New York, pp. 69-95.
Pardyanto L., Reksowigoro L.D., Mitromartono F.X.S., Hardjowarsito S. and Kusumadinata, 1978 (reed. 1982): Volcanic Hazard Map, Merapi Volcano, Central Java (1/100,000). Geological Survey of Indonesia, Bandung, II, p. 14.
Sabari Yunus H., 1991: The evolving urban planning. The case of the city of Yogyakarta. The Indonesian Journal of Geography, 21(61): 1-14.
Shimokawa E., Jitousono T., Tsuchiya S., Djamal H. and Haryanto 1995. Sediment yield from the 1984 pyroclastic flow deposits covered hill-slopes in Merapi volcano, Indonesia. Proceedings Workshop on Erosion Control through Volcanic Hydrological Approach (WECVHA), January 10–11, Sabo Tecnical Center, Yogyakarta, pp. 150-162.
Siswowidjojo S., 1971: Laporan Letusan G. Merapi 7–8 Januari 1969. Dinas Volkanologi, Seksi Pengawasan Gunungapi, Bandung.
Slaymaker O., 1996: Introduction to geomorphic hazards. In: Slaymaker O. (ed.), Geomorphic Hazards. Wiley & Sons, New York, pp. 1-7.
Smith K., 1992: Environmental Hazards: Assessing Risk and Reducing Disaster. Routledge, London.
Smith G.A., and Fritz W.J., 1989: Penrose Conference report: Volcanic influences on terrestrial sedimentation. Geology 17: 376.
Thouret J.-C. and D'Ercole R., 1996: Vulnérabilité et risques naturels en milieu urbain: effets, facteurs et réponses sociales. Cahiers des Sciences Humaines 32(2): 407-422.
Thouret J.-C and Laforge C., 1994: Hazard appraisal and hazard-zone mapping of flooding and debris flowage in the Rio Combeima valley and Ibagué city, Tolima department, Colombia. Geojournal 34(4): 407-413.
Thouret J.-C., Lavigne F., Kelfoun K. and Bronto S., 2000: Toward a revised hazard assessment at Merapi volcano, Central Java. In: Voight B. (ed.), Merapi Volcano, Central Java. Journal of Volcanological and Geothermal Research (in press).
UNDRO (United Nation Disaster Relief Organization), 1979: Prévention et atténuation des catastrophes. Aspects économiques, Vol. 7. UNDRO, Genève.
VSI (Volcanological Survey of Indonesia), 1995: A guide Book for Merapi Volcano. Bandung.
VSTC (Volcanic Sabo Technical Center), 1990: Supporting Report of Technical Development Activities. 6: Mudflows Forecasting and Warning System, Yogyakarta.
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Lavigne, F. Lahar hazard micro-zonation and risk assessment in Yogyakarta city, Indonesia. GeoJournal 49, 173–183 (1999). https://doi.org/10.1023/A:1007035612681
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DOI: https://doi.org/10.1023/A:1007035612681