The Quaternary volcanic rocks of Wilis Mountains can be divided into three morphocets : i.e the Jeding - Patukbanteng Morphocet, the Pawonsewu Morphocet, and the Argokalangan Morphocet. A sub-division of a morphocet is called a "morphonits", and eight morphonits have been recognized.
The Project area has often suffered from disaster caused by lahar because of topographical, geological and socio-economic situations. In recent years the most serious disaster was caused on May 14, 1981 by the lahar which destroyed the Leces Dike and inflicted serious damage on the sabo dams, dikes, irrigation intakes and so on.
This is the sixth report on the progress of the project Volcano Monitoring and Research in Indonesia, covering the first quarter of 1987. Background information on the project and the organizational status of the Volcanological Survey of Indonesia (VSI) and the U.S. Geological Survey (USGS) were reported in an earlier report (Casadevall, 1985).
G. Lamongan (+1670 m) terletak di wilayah Propinsi Jawa Timur yang meliputi Kab. Lumajang dan Probolinggo. Gunung ini merupakan gunungapi strato yang giat (Tipe A) diapit oleh Gunungapi Tengger di sebelah barat dan Gunungapi Iyang ar gopuro di sebelah timurnya
Melengkapi data untuk penyelidikan yang lebih teliti tentang hasil-hasil letusan gunungapi ini dan karakreristik letusannya, terutama terhadap produk-produk letusan besarnya
Metoda seismik merupakan metoda yang sangat penting dalam mempelajari gunungapi, khususnya di Seksi Penyelidikan Gunung Merapi (PGM) metoda ini sangat berguna dalam peramalan kegiatan G.Merapi dan dalam mempelajari sifat - sifatnya.
Telah dirancang, dibuat dan dipasang sistem telemetri untuk keperluan pengukuran parameter-parameter Gunung Kelut
Volcanio gases are the primo mover of the eruptions which drags the magma up towards the earth's surface. And because of their much lower viscosity, volcanic gases are far more fast than the magma they come from to give some informa-tions.
Pada tanggal 6 Februari 1987, Rombongan UNDP melakukan peninjauan ke G.Galunggung. Peninjauan dilakukan dari udara, dengan mempergunakan helikopter. Rombongan terdiri dari Mr. Galal Magdi (Resident Representative, UNDP), Ibu Amelia Yani (Senior Programme Assistant, UNDP, Jakarta), Bapak Andang Sumadinata (Kepala Kanwil Departemen Sosial Jawa Barat, Bandung) mewakili Gubernur Jawa Barat, dan pen…
Mount Lamongan 1670 m above sea level is located in the regencies of lumajang and Probolinggo, Fast Java. Geographically it lies between Latitudes 7°46'23' to 8°8'3" South and Longitudes 113°13'20" to 113°23' East. It covers the area of about 1000 square kilometers. This volcano is surrounded by other two big volcanoes, they are Mount Iyang Argopuro on the East and Mount Tengger-Bromo on th…