After the December eruption 1930, the laducourses of Merapi Volcano, Central Java previously showed no water circulation, expect at big rainfall, which caused shorthliving banjirs.
The ladumasses were deeper cut in the course of the mouths and it appears always clearer, that they were built of a heterogen, lightbrown colored sand mass, where in-between irregularly scattered, the stones occurred as individuals or as bouldertrails.
Almost all authors are the opinion, that the well - known wedusgembel, which caused death and destruction on the western slope of the Merapi, originated from the hot lava avalanches (glowing avalanches), which rolled down along the slides, whereas 'shout-out' wedusgmbel have not taken place.
Banjir lahar di daerah G. Sermora pada tanggal 20 September 1978 terjadi akibat turun hujan torus nemoras solana 4 (empat) hari, so-Jak tanggal 19 September 1978. Kejadian tersebut dimuat dalam surat Kabar SIHAR HARAPAN pada tanggal 27 September dan Harian KOMPAS pa da tanggal 28 September 1978, bahwa Besuksat-K. Hujur dan K. Láp-rak dilalui oleh banjir tersebut.
Pengukuran kubah lava ini bertujuan untuk mengetahui volum pen-dekatan. Penulis memberi istilah volum pendekatan disini, karena berdasarkan atas sifat pengukuran pengukurannya, antara lain s a. pengukuran puncak kubah lava baru dengan cara aanpeilingen" jarak jauh dari dua titik totap (titik pengamatan) G. Sasur dan Sumberbulus (PANDI. K., 1977). b. disesuaikan dengan seket dari potret ba…
As mentioned, during the observation, extensive temperature observations were carried out. From this on the first place appeared, that within the crater groups of solfatara's and hot springs can be distinguished, which temperature strongly varied. The distribution of the temperatures is for a fixed day (September 2, 1924) given on Plate II. We see from this, that the highest temperature occurre…
The crater of the Lamongan vas visited for the last time in July 1925. Although since that tine no reports on abnornal phenomena were received, the crater was again reconnoitred at the beginning of February 1924, as we must be always on our alert, that the rostful situation of these previously so active volcano suddenly might change.
Volcanic quakes occurred since September 20,1924. E and Ne of Ranu Klakah treasures were formed. The tromometers Klakah repetend in October 135, in September 81, in December 105 shocks.
During 1922 the G. Lamongan was often visited by the volcano guideship survey namely in April, June and August.
of much more importance of the surrounding plains of the Senera is tow aquatic transportaton of the ejected products, the was danger. When we travel the area between Lunajang and Pasirian and the S foot of the volcano till the Kali Glidik, then it becomes clear to anybody which role the aquatic transportation of the Semeru products fulfils in the economic life of the here established populat…