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Seismic Observation and Inter Pretation of Krakatau Complex in the Periods of 1981-1983

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The significant change in seismic activity for an active volcano is closely related to the stage of volcanic activity. Even in the dormancy period, the observation of seicmic activity of a particular volcano is very important to evaluate the status and to anticipate the future behavior.

The Volcanological Survey of Indonesia installed triparti- te instruments at the Anak Krakatau and Sertung islands to record the seismic activity of the Krakatau volcano in the period of 1981 1983. This record then can be used to determine the frequen cy of earthquake occurence and the location of activities.

The analysis shows that the earthquake occurences in the pe riod of 1981-1983 had shallow sources within 2 and 20 km depths, Nữ across the distributed in weck zones Striking SW NE and SE Anak Krakatau. Most of the sources are located in the weak zone within the Krakatau caldera bordered by Sertung, Panjang and Raka ta islands. From the apparent velocity calculation using (S-P) readings, the crustal under the Krakatau complex is relatively massive. As far as the above analysis concern the predicted ac- tive structural faulting have not yet affected the Anak Kraka tau's activity.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

PVG A.83-4

Penerbit

Bandung, Jawa Barat, Indonesia : Pusat Vulkanologi dan Mitigasi Bencana Geologi., 1983

Deskripsi Fisik

30 hlm; tabel; gmbr; peta

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

Gunung Krakatau
Surroundings Jakarta
1983

Info Detail Spesifik

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Pernyataan Tanggungjawab

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Informasi Lainnya

Kode Wilayah

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Pulau Dan Lembar Peta

Sumatera

Provinsi

Kepulauan Riau

Koordinat - Latitude

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Koordinat - Longitude

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Versi lain/terkait

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