Earthquake Research

In the early hours of 26 December 2004, an unprecedented massive earthquake off the coast of Sumatra produced the most devastating tsunami in history. It owes the death of over 250,000 people and affected many countries in southeast Asia and Africa. It was the largest earthquake to occur since the advent of global digital seismometer. Shifts in the sea floor displaced more than 30 km3 of seawater, generated tsunami traveled to the Antarctic, the east and west coast of Americas and the Artic Ocean Two year after, this earthquake has been studied in great detail over broad time-scales, using modern seismic data , Global Positioning System (GPS) data, modern bathymetric survey and ocean bottom seismic network.

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source: Majalah Tempo edisi 17 Juli 2006
Rubrik Iptek
Misteri Glung dari Bumi Mataram

Sudah dua bulan penduduk Bantul dihantui bunyi aneh yang disusul gempa. Mereka mengira Bantul bakal ambles.
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SEBUAH malam yang tak terlupakan. Dalam kesenyapan malam, tiba-tiba datang suara misterius mengguncang. Glung! Bunyinya terdengar hingga ke seluruh pojok kampung dan membuat Desa Srihardono yang tengah terlelap itu terkesiap. Kampung itu bergetar sejenak. Penduduk setempat kaget, tapi kemudian akhirnya mereka memilih menenangkan diri sendiri di tempat tidur.

Namun, bunyi-bunyi aneh itu datang lagi, malah jadi “santapan” sehari-hari. Kadang-kadang bunyi itu muncul pada pagi hari atau siang hari, seperti yang terjadi Kamis dua pekan lalu. “Tiba-tiba muncul suara glung, lalu bumi bergetar,” kata Ngadiyo, warga Desa Srihardono, Bantul, Yogyakarta.

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Introduction
More than 5,000 people have been killed and thousands more injured by a strong earthquake that struck Jogjakarta in the morning of May 27, 2006. USGS estimated magnitude of this earthquake is Mw 6.3.


Figure 1. Tectonic setting and background seismicity

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