Design and operation of a 1500-m laser strainmeter installed at an underground site in Kamioka, Japan

• Material Type: 記事
• Title: Design and operation of a 1500-m laser strainmeter installed at an underground site in Kamioka, Japan
• Author/Editor: Akito Araya; Akiteru Takamori; Wataru Morii
• Publication, Distribution, etc.: 日本 : Springer Nature
• Publication Date: 2017-06-08
• Publication Date (W3CDTF): 2017-06-08
• Periodical title: EPS : Earth, Planets and Space
• No. or year of volume/issue: 69(77)
• Volume: 69(77)
• ISSN (Periodical Title): 1880-5981
• ISSN-L (Periodical Title): 1343-8832
• Text Language Code: eng
• DOI: 10.1186/s40623-017-0660-0; https://doi.org/10.1186/s40623-017-0660-0
• Persistent ID (NDL): info:ndljp/pid/10369104; https://dl.ndl.go.jp/pid/10369104
• Collection: 障害者向け資料
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• Collection (particular): 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > その他; https://dl.ndl.go.jp/collections/B00035
• Acquisition Basis: オンライン資料収集制度
• Date Accepted (W3CDTF): 2017-06-22T22:40:19+09:00
• Date Captured (W3CDTF): 2017-06-22
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• Periodical Title (URI): http://earth-planets-space.springeropen.com/articles
• Periodical Title (Persistent ID (NDL)): info:ndljp/pid/10319651; https://dl.ndl.go.jp/pid/10319651
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• Summary, etc.: A laser strainmeter with a 1500-m baseline was constructed at an underground site in Kamioka, Gifu Prefecture, Japan, and has been operating since August 2016. The laser interferometer measures the change in distance between two retroreflectors housed in two vacuum chambers with a separation of 1500 m. The retroreflectors are fixed to the ground in the tunnel of the KAGRA gravitational wave telescope. A high-frequency-stabilized laser is used as a light source; it achieves an Allan variance of 3 × 10[−13]. Since operations began, ground motions with large amplitude and timescale variations have been detected. The recorded tidal waveform almost agrees with the theoretical waveform; however, a slight difference of ~13% in amplitude is found, likely due to a topographic effect. The strain spectrum of the observed data for the 1500-m strainmeter indicates that the lowest background noise attained is less than 10[−12] in the mHz band. Seismic waves up to 6 × 10[−7] in amplitude have been observed without saturation or fringe steps. The strainmeter, with its excellent resolution, dynamic range, and bandwidth performance, provides a new method for observing low-frequency ground motion on seismic, geodetic, and intermediate timescales.
• DOI: 10.1186/s40623-017-0660-0; https://doi.org/10.1186/s40623-017-0660-0
• Access Restrictions: インターネット公開
• Rights (production): © The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
• Related Material (URI): http://hdl.handle.net/2433/227904; http://id.ndl.go.jp/digimeta/10369104; https://dl.ndl.go.jp/pid/10369104; http://link.springer.com/content/pdf/10.1186/s40623-017-0660-0.pdf; http://link.springer.com/article/10.1186/s40623-017-0660-0/fulltext.html
• Is Referenced By: Monitoring volcanic activity with distributed acoustic sensing using the Tongan seafloor telecommunications cable; https://cir.nii.ac.jp/crid/1360021390573508864; Distributed Acoustic Sensing Observation Using Seafloor Cable Observation System in the Japan Sea; https://cir.nii.ac.jp/crid/1360025431136463616; Improving the stability of frequency-dependent squeezing with bichromatic control of filter cavity length, alignment, and incident beam pointing; https://cir.nii.ac.jp/crid/1360861288379492608; Performance of Seismic Observation by Distributed Acoustic Sensing Technology Using a Seafloor Cable Off Sanriku, Japan; https://cir.nii.ac.jp/crid/1360861707128279552; The status of KAGRA underground cryogenic gravitational wave telescope; https://cir.nii.ac.jp/crid/1361694369222372480; Overview of KAGRA : detector design and construction history; https://cir.nii.ac.jp/crid/2050307417127952896; Construction of KAGRA : an underground gravitational-wave observatory; https://cir.nii.ac.jp/crid/2050870367068482176; Overview of KAGRA : calibration, detector characterization, physical environmental monitors, and the geophysics interferometer; https://cir.nii.ac.jp/crid/2051996266988216832
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• Data Provider (Database): 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
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• Bibliographic ID (NDL): 10369104; http://id.ndl.go.jp/bib/10369104
• NAID: 120006364108