Effects of Earthquake in Sumatra

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Abstract

ON May 17, 1892, an unusually severe earthquake was felt through nearly the whole of North Sumatra; most severely shaken was the district between the Dolok Lubuk Raja and the Gunung Talamau (Ophir). Serious landslips occurred in many parts of the mountains, especially near the summit and along the slopes of the Gunung Merapi, a volcano 2145 metres high in the residency Tapanuli. On inspection it was found that the safety of a brick pillar, erected on its most elevated point by the triangulation service, was endangered by part of the crater having been destroyed. At three metres distant from the original pillar, as much as the narrow ridge would allow, a new pillar was built, the top of which was made level with that of the original one. The measurements made in order to fix the position of this new pillar showed such differences with the original measurements, that these could only be explained by a displacement of the original pillar. As, however, neither fissures nor local disturbances of the ground could be observed, new measurements were made from all the surrounding positions, and it was proved that a displacement of several more pillars had taken place.

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DELPRAT, T. Effects of Earthquake in Sumatra. Nature 52, 129–130 (1895) doi:10.1038/052129c0

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