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Volcanoes in Indonesia: Comparative study of island arc volcanoes between Japan and indonesia

Co-operation project between GSJ and Directorate of Volcanology and Geological Hazard Mitigation, Indonesia (DVGHM) (VSI)

6000 km long along-arc variation on volcanic activity from Sunda arc to Sangih islands under various tectonic settings, such as oblique subduction, normal subduction, collision. Indonesia was suffered from the large volume eruption wtih caldera collapse twice during the last 200 years.

Fig. Active volcanoes from Java to Flores. Red mark is a caldera forming eruption during the last 1000 yeras. Rinjani age from GSJ and DVGHM.

Co-operation project between GSJ and Directorate of Volcanology and Geological Hazard Mitigation, Indonesia (DVGHM): We are studying eruptive histories including mapping, satellite data analysis, K-Ar and 14C datings, and geochemistry.

1996-1997: Survey of Tambora volcano, Sumbawa island. The great 1815 eruption with caldera collapse killed around 90,000 people. The eruptive history to caldera forming eruption has been studied. Various signs indicating 1815 caldera forming eruption have been detected (Takada et al., 2000; Matsumoto and Takada, 2000: Takada et al. submitted). The sequence of the caldera forming eruption has cleared (Yamamoto et al., 2000). Geological map of Tambora volcano is in prep. (DVGHM). Photographs of Tambora volcano

Fig. Evolutiion of Tambora volcano before the 1815 caldera forming eruption.

1998: Survey of volcanoes in East Java. There are volcanoes with caldera and without caldera (Takada et al., 2000). Photographs of volcanoes in East Java.

2000: Survey of volcanoes in Bali. Photographs of volcanoes in Bali.

2002-2004: Survey of Rinjani volcano (Lombok island) and caldera volcanoes in Bali. In Rinjani, a caldera fromaing eruption occured in the 13th century. Eruption rate, eruption sites, eruptiion type, magma composition have changed during the last 10,000 years before the caldera forming eruption (Takada et al., 2003; Nasution et al., 2003). The eruptive sequence of the caldera forming eruption has restored. Furukawa et al, 2004). Photographs of Rinjani volcano

Fig. Evolutioin of Rinjani volcano.

2005-: Continued.

References

Takada, A., Yamamoto, T., Kartadinata, N., Budianto, A., Munandar, A., Matsumoto, A., Suto, S. and Campos Venuti, M. (2000) Eruptive history and magma plumbing system of Tambora volcano, Indonesia, 2000 IAVCEI meeting.

Yamamoto, T., Takada, A., Munandar, A. T., Kartadinata, N., Budianto, A. (2000) Stratigraphy of the 1815 deposits of Tambora volcano, Indonesia, 2000 IAVCEI meeting.

Takada, A., Yamamoto, T., Kartadinata, N., Budianto, A., Munandar, A., Matsumoto, A., Suto, S. and Campos Venuti, M. (2000) Eruptive history and magma plumbing system of Tambora volcano, Indonesia, Report of ITIT Projects, Research on Volcanic Hazard Assessment in Asia, Geological Survey of Japan , 42-79.

Matsumoto, A., Takada, A. (2000) K-Ar ages determination of lavas around Tambora volcano, Indonesia, Report of ITIT Projects, Research on Volcanic Hazard Assessment in Asia, Geological Survey of Japan 83-85.

Yamamoto, T., Takada, A., Munandar, A. T., Kartadinata, N., Budianto, A. (2000) Stratigraphy of the 1815 deposits of Tambora volcano, IndonesiaCReport of ITIT Projects, Research on Volcanic Hazard Assessment in Asia, Geological Survey of Japan ,80-82.

Urai. M. (2000)Geologic interpretation of JERS-1 SAR imagery at Tambora volcano, Sumbawa Islnad, Indonesia, Report of ITIT Projects, Research on Volcanic Hazard Assessment in Asia, Geological Survey of Japan , 88-90.

Takada, A., Sinulingga, I.1, Surmayadi, M.1 and Urai, M. (2000) Comparison among volcano complexes with a caldera and without a caldera,East Java (Preliminary report), Report of ITIT Projects, Research on Volcanic Hazard Assessment in Asia, Geological Survey of Japan ,93-115.

Takada, A., Nasution, A., Mulyana, R. (2003) Eruptive history during the last 10 ky for the caldera formation od Rinjani volcano, Indonesia. 2003 Japan Earth and Planetary Science joint Meeting.

Ozawa, T., Takada, A., Murakami, M.@(2003)@Crustal deformation of Tambora volcano, Indonesia, derived from JERS-1 SAR interferometryC2003 IUGG meeting.

Nasution, A., Takada, A., Mulyana, R. (2003) Eruptive history during the last 10 ky for the caldera formation od Rinjani volcano, Indonesia. 2003 IUGG meeting.

Furukawa, R., Takada, A., Nasution, A. (2004) Caldera forming eruption of Rinjani volcano in 13th century, Lombok, Indonesia, 2004 IAVCEI meeting.

Furukawa, R., Takada, A., Nasution, A. (2005) Eruptive sequences of 13th century caldera formation at Rinjani volcano, Lombok, Indonesia, 3rd CCOP Field Workshop for Volcanic Hazard Mitigation in Yogyakarta.

Takada, A., Yamamoto, T., Kartadinata, N., Budianto, A., Munandar, A., Matsumoto, A., Suto, S. and Campos Venuti, M. (submitted) Eruptive history and magma plumbing system of Tambora volcano, Indonesia,