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Eruptive Activity at Semeru and Bromo Volcanoes, East Java, Indonesia
Masato IGUCHI
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Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University, +1,,ῌ+3
Sakurajima-Yokoyama, Kagoshima 23+ῌ+.+3, Japan1$]( Kobakan

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A ++ km, (iQde1$-e-mail : iguchi@svo.dpri.kyoto-u.ac.jp

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%c&d 'MN( + km ,e;<fghi)!*j k+'Il,m,- n  ( ,* !. 'o) p" qr/ stM WN )D'"  WZ ¦H[§#¨© ¡CDEZ ª#«¬ ZZW ­r®E¯F°±gZ§# o'²῍ῌ῎῏ῐῑ῎῏ +. ³z´µ G¶HWIJ9 I Mahameru MN·¸
Photo +. Typical eruption at the summit crater of Semeru volcano. Photograph taken from Mahameru, the summit.
῎῏ ,. ³z rock-fall. IMN +, km KLK, Gunung Sawur Ao·¸Photo ,. Rock-fall descending down the Semeru volcano. Photograph taken from Gunung Sawur Observatory, +, km
ESE of the summit.
῎῏ -. CDE ,**.  0 + 2  9:( / !0
Photo -. Eruption on June 2, ,**. at Bromo volcano. The photograph was taken ca. / minutes after the beginning oferuption, from the caldera rim, , km from the crater.
῎῏ .. MN( + km O!# ' 'M o( /* cm  $J impact crater NJ,
Photo .. Ballistic bomb fallen at ca. + km from the crater. Am impact crater of /* cm in diameter was formed.

 + 
 Mahameru 
Photo +. Typical eruption at the summit crater of Semeru
volcano. Photograph taken from Mahameru, thesummit.

 -  ,**.  0  2  ! / "#
Photo -. Eruption on June 2, ,**. at Bromo volcano. The
photograph was taken ca. / minutes after the beginningof eruption, from the caldera rim, , km from the crater.

 ,  rock-fall.  +, km $%$&'( Gunung Sawur )*+,-
Photo ,. Rock-fall descending down the Semeru volcano.
hotograph taken from Gunung Sawur Observatory, +,km ESE of the summit.

 . .! + km /&01234(5 567 ,-! /* cm 89: impact crater ;<=:'(Photo .. Ballistic bomb fallen at ca. + km from the crater.
Am impact crater of /* cm in diameter was formed.