The Sunda Strait is situated between the island of Java and Sumatra, connecting the Java Sea in the north and the Indian Ocean in the South. In the northern part the strait is narrower and shallower than in the southern part. The narrowest part in the north is only about 24 km wide with depth of less than 8 m.
Untuk mendapatkan hasil rekaman berupa data kegiatan Seismik gunungapi yang baik diperlukan pengecekan/perbaikan dan kalibrasi kembali pada semua peralatan seismograph yang dipakai disekitar gurunungapi tersebut.
Pengecekan dan kalibrasi ini sangat perlu diadakan mengingat sebagian besar dari peralatan seismograph itu terdiri dari peralatan yang menggunakan component elektronika yang sering dapat berubah karakteristiknya akibat panas yang disebabkan oleh lamanya pemakaian yang terus menerus, sebab gangguan cuaca atau bisa juga berubah yang disebabkan oleh menurunnya tegangan power (batere).
The topographic reconnaissance survey was carried out by us in March 15, 1983. The survey has utilized the modest available equipment for surveying, e.i. magnetic geologic compass and range finder. Altimeter was also used to determine the elevation. The survey was done in the morning between 7.00 to 8.00 am.
An invitation issued by Unesco under the Volcanologist Exchange Programme has given opportunity to the authors to visit Mayon Volcano, South Luzon, The Philippines, which was reported to have shown an increasing activity early May this year. The first increasing volcanic phenomenon was observed on May 3, and harmonic tremors were recorded the following days. The precaution measures have then be…
During the month of January the growth of lava dome continued slowly. From time to time at night glares above the dome could be observed. On January 15 a lava avalanche entered the upper course of R. Batang. In February the growth of lava dome seemed to cease completely.
The purpose of this report is to indicate the exixtence of a phreato-magnetic volcanic center in the densely populated area south of Cirebon city. On July 6 and July 29, 1988, I examined the geology of the area near the reservoir (waduk) Setu Patok , located 8 km south of Cirebon city (Figure 1) [108 degrees, 47', 10" S; topographic map, 1966 series, sheet 4722 IV, Tjirebon].
Integration of GIS and Remote Sensing explores the tremendous potential that lies along the interface between GIS and remote sensing for activating interoperable databases and instigating information interchange.it concentrates on the rigorous and maticulous aspects analytical data matching and thematic compatibility-the true roots of all branches of GIS/remote sensing applications .however ,cl…