new seismic monitoring observation system and data accessibility at syowa station
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ID: 148566
1999
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Abstract
The seismic observation system at Syowa Station, East Antarctica was fully replaced in the wintering season of the 38th Japanese Antarctic Research Expedition (JARE-38) in 1996-1998. The old seismographic vault constructed in 1970 was closed at the end of JARE-38 because of cumulative damage to the inner side of the vault by continuous flowing in of water from walls in summer and its freezing in winter. All the seismometers were moved to a new seismographic hut (69°00′24.0″S, 39°35′06.0″E and 20m above mean sea level) in April 1997. Seismic signals of the short-period (HES) and broadband (STS-1) seismometers in the new hut are transmitted to the Earth Science Laboratory (ESL) via analog cable 600m in length. The new acquisition system was installed in the ESL with 6-channel 24-bit A/D converters for both sensor signals. All digitized data are automatically transmitted from the A/D converter to a workstation via TCP/IP protocol. After parallel observations with the old acquisition system by personal computers and the new system during the wintering season of JARE-38,the main system was changed to the new one, which has some advantages for both the reduction of daily maintenance efforts and the data transport/communication processes via Internet by use of LAN at the station. In this report, details of the new seismographic hut and the recording system are described. Additionally, the seismic data accessibility for public use, including Internet service, is described.
| Reference Key |
kanao1999antarcticnew
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| Authors | ;Masaki Kanao;Katsutada Kaminuma;Kazuo Shibuya;Yoshifumi Nogi;Hiroaki Negishi;Yoko Tono;Toshihiro Higashi |
| Journal | revista facultad nacional de agronomía medellín |
| Year | 1999 |
| DOI |
10.15094/00009067
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| URL | |
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