Dari hasil pengolahan data kegempaan pada periode tahun 1989 sampai tahun 1997, gempa vulkanik mengalami peningkatan pada pertengahan November dan Desember 1989. Februari dan April 1990, Januari 1991, Maret 1992, Juni dan Agustus 1993, Maret 1994, Agustus 1995, Agustus 1996 dan Mei 1997.
The Ijen caldera complex is located in an active tectonic region, where the Indian plate is now sliding approximately northward beneath Java at about 6-7 cm/yr. This study is in two parts, the firs is detailed field mapping and includes a geological map and stratigraphy, which form the basis for other work. The second concentrates on the post-caldera pyroclastic deposits.
The Ijen caldera in East Java contains on of the world's largest (600 x 1000m) and deepest (180m) hyperacid (pH
The Idjen caldera is classed as a Krakatoa type or stratocone caldera and is characterized by a caldera floor, a caldera escarpment, and older volcanic forms. The caldera diameter rangers from 14 by 16 km at the rim to 11 14 km at the floor with a maximum depth of 709m.
Aktivitas kegempaan Gunungapi Ijen sangat menarik untuk dikaji keberadaan danau kawah yang memiliki volume air sekitar 30 juta m3 ini memiliki aktivitas hidrotermal yang tinggi sehingga diindikasikan adanya patahan-patahan yang membantu jalur migrasi fluida bawah permukaan Gunung Ijen. Penelitian ini dilakukan untuk menentukan perubahan temporal spektral gempa vulkanik tipe A dan Tipe B serta …
Extreme envinroments, such as deep-sea hydrothermal vents, hypersaline salt flats, deserts and the planet Mars, are designated as chic sites for investigation, while normal is passe (Rothschild and Macinelli 2001). Research in these life -at-the-edge environments focuses on properties and mechanisms that ensure viability under extreme conditions. Among the system receiving considerable attentio…