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このページ(論文)をリンクする場合は次のURLを使用してください: http://hdl.handle.net/2261/12119

タイトル: 地震波動の連続観測のための多成分磁気記録報 第1報 : 短周期地震波動8成分の磁気記録
その他のタイトル: Multi-Channel Triggered Magnetic Tape Recording for Routine Seismic Observation. Part 1. : Eight-channel Magnetic Tape Recording for Short Period Seismic Waves
著者: 辻浦, 賢
著者(別言語): Tsujiura, Masaru
発行日: 1963年7月30日
出版者: 東京大学地震研究所
掲載誌情報: 東京大学地震研究所彙報. 第41冊第2号, 1963.7.30, pp. 419-445
抄録: A Seismograph system for recording seismic waves by means of a triggered magnetic tape recorder was completed some years ago. Since then, earthquake observations by means of this system have been extensively made. As will be shown in the papers the equipment was originally designed and constructed utilizing vacuum tubes; hitherto, transistors were used for the purpose of economizing the expense of power supply and im- proving the portability of the equipment. For our purpose, it is necessary to have at least a three-component seismograph at one seismological station. In order to get more information on seismic waves, we used a multi-channelled FM carrier magnetic tape re- cording by frequency-division method in our system. The principal limitation of the FM carrier system derives from variations in the tape motion or the flutter which produce changes in the recorded frequency that in turn manifest in the out-put as noise.
URI: http://hdl.handle.net/2261/12119
ISSN: 00408972


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