Thursday, October 30, 2014

VOLCANO OF JAVA

Java possessing greater number of volcano than other islands in Indonesia. Volcano Karang in West Java is the first of Java volcano series,next volcano Salak where it's eastern side was border with volcano Gede.Volcanoes on eastern side of Gede is divided in two branches: South and East.Southern side is divided in to several sections stretching along the island till meet it's northern side,then further stretch toward east till to volcanoes Sundoro - Sumbing in Central Java.

Near by eastern side of volcano Sumbing, existed 3 volcanoes:toward north and south,divided in to several parts: Unggaran,Merbabu,Merapi.Another volcano at east side, at Jepara is looks out off main series of Java Volcano,formed small peninsula on the island of Java that's today knew as peninsula Muria.The series of Java volcanoes proceeded further,it's began from Merapi to ward eastern side of the island till corner east of Java island.

Today...based on their feature, there two volcanoes on the island: Strato and Maar.Based on their history of eruption or recent eruption,there has been identified several types: Vulcano, Stromboli, St.Vincent (Kelud 1919),Merapi,Plinian,and Pheriatic.Based on their classification, there has been identified 35 active volcanoes on the island: 21 volcanoes are active volcanoes type A, 9 volcanoes are active volcanoes type B, and 5 volcanoes are active volcanoes type C.Below is listed name of Java Volcanoes:

1.Gede,
2.Salak,
3.Tangkubanparahu,
4.Papandayan,
5.Galunggung,
6.Guntur,
7.Cereme,
8.Slamet,
9.Butak Petarangan,
10.Dieng,
11.Sundoro,
12.Sumbing,
13.Merapi,
14.Merbabu,
15.Kelud,
16.Arjuno Welirang,
17.Semeru,
18.Bromo,
19.Lamongan,
20.Raung,
21.Kawah Ijen,
22.> Pulosari,
23.Karang,
24.Patuha,
25.Wayang Windu,
26.Talaga Bodas,
27.Unggaran,
28.Lawu,
29.Wilis,
30.Iyang Argopuro,
31.> Kiaraberes Gagak,
32.Perbakti,
33.Kawah manuk,
34.Kawah Mojang,
35.Kawah Karaha.

RELATED NOTE:

1.DOUBTFUL ERUPTIONS:Recorded eruption in historical time of volcano Sumbing was prevesiously doubful as well as volcano Merbabu according to Data Dasar Gunungapi Indonesia 1979.But recently,past eruption of Sumbing was confirmed already and clasified active volcano type A.While volcano Merbabu, recently (Surono,2014) clasified active volcano type B.

2.VOLCANO MAAR:At least 3 other volcanoes have been identified in Central Java, exactly at peninsula Muria,there are:Maar Bambang, Maar Gunungrowo, dan Maar Gembong.Eruption of volcano Muria is still possible if reactivation of tectonic activity was occured at teritory of peninsula Muria. While at East Java,an active volcano type A, volcano Lamongan was identified as Maar too.


REFERENCE:
1.K.Kusumadinata.Java.DATA DASAR GUNUNGAPI INDONESIA, 1979.
2.Sutikno Bronto,Sri Mulyaningsih. Gunung api maar di Semenanjung Muria. JURNAL GEOLOGI INDONESIA,No. 1 March 2007
3.G.Sumbing.pvmbg.bgl.esdm.
4.Thomas Stamfort Raffles, The History of Java,______________

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