Programme for prediction of volcanic eruption developed by the Hydrographic Department of Japan.
The Hydrographtc Department actively participates in the national programme for prediction of volcanic eruption since the programme started in 1973. Observation of volcanic activities in the adjacent seas of Japan is very important not only to protect navigation, fishery and other activities in the sea area against a disaster, but also to manage the sea area itself effectively. The Hydrographic Department regularly monitors the condition of the sea area, and whenever any abnormal phenomenon on the sea is found and information of a sign of volcanic activity is obtained from other sources, it operates concentrated observations of such volcanic activity by airplanes and ships, such as, for example, in the cases of eruption at Kaitoku Seamount in 1984, Hukutoku Oka-no-Ba in 1986, and Izu-0 Sima in 1986 and 1987. It is very essential to collect the geological and geophyisical data from the surveys on the volcanic activity field for scientific promotion of systems and methods of prediction of volcanic eruption. Therefore, the Hydrographic Department promotes such surveys in the sea areas of Nanse Syoto and Nanpo Syoto, and provides the society concerned with the fundamental scientific data. Furthermore, in order to sophisticate the volcanic activity observation the Hydrographic Department continues studies on various fields and items such as precise multi-narrow beam survey system, chemical and physical features of discoloured water, geographical change of a newly born island, remote sensing by satellites, automatically programmed observation buoy, sonic observation of eruption and so on. Annex l is a list of volcanoes and their activity records Annex 2 shows contributions from the Hydrographic Department to the coordinating committee for prediction of volcanic eruption.
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| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
1989
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| Online Access: | http://hdl.handle.net/1834/16073 |
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