2024-03-28T23:55:19Z
https://repository.dl.itc.u-tokyo.ac.jp/oai
oai:repository.dl.itc.u-tokyo.ac.jp:00032252
2022-12-19T04:08:01Z
80:4453:4489
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Radio-controlled Seismograph System
無線制御による地震観測システム
瀬戸, 憲彦
71950
中村, 正夫
71951
北浦, 泰子
71952
田上, 貴代子
71953
Radio-controlled Seismograth System
VHF(Very High Frequency)
GPS clock
DTMF(Dual Tone Multiple Frequency)
To analize the micro-structure below the Kii Peninsula using multi-observation sites, we have developed a radio-controlled seismograph system. This system has the following characteristics : 1) Using VHF (60 MHz) band radio frequency, it has a large control area. 2) Using a GPS clock, it can ensure the time accuracy of each observation station. 3) Data loggers at each observation sites are controlled by radio commands (DTMF signal) at the same time, with which we can increase logging efficiency. For this purpose, we prodiced 200 VHF receivers (including DTMF decoders) and 50 data loggers. Using this system for operations, we obtained suitable data sets for analyzing the structure.
<論説>
departmental bulletin paper
東京大学地震研究所
1999
application/pdf
技術報告
5
1
15
AA1144042X
13426486
https://repository.dl.itc.u-tokyo.ac.jp/record/32252/files/05_001-015.pdf
jpn