Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Junichi SAKAKIBARA"'
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-6 (2019)
Abstract Owing to the strict restrictions on the use of air guns in marine seismic surveys due to concerns about their potential impact on the marine ecosystem, there have been several cases where seismic surveys were not permitted. This tendency has
Externí odkaz:
https://doaj.org/article/81fc750b55ca4aa5ae2e5bdba013e5e9
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-6 (2019)
Owing to the strict restrictions on the use of air guns in marine seismic surveys due to concerns about their potential impact on the marine ecosystem, there have been several cases where seismic surveys were not permitted. This tendency has been par
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::178d092331b9ab8f321ae0992a668077
http://link.springer.com/article/10.1186/s40623-019-1011-0
http://link.springer.com/article/10.1186/s40623-019-1011-0
Autor:
Ayato TSUTSUMI, Atsushi YAMAMOTO, Masahiro KAI, Daiki TAKANO, Hidenori TAKAHASHI, Junichi SAKAKIBARA
Publikováno v:
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering). 78:I_805-I_810
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::409c46153d4bb2b154a281fffcc2b82c
https://doi.org/10.2208/jscejoe.78.2_i_805
https://doi.org/10.2208/jscejoe.78.2_i_805
Publikováno v:
Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering). 67:310-318
地盤や構造物の地震時の詳細な挙動を把握するために，現地でのモニタリングや数値解析とともに，精密な模型実験は重要であるが，模型地盤の地盤構造を非破壊で2次元的に把握する手
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff7ca174fbc8575a1d7cb5058589d268
https://doi.org/10.2208/jscejge.67.310
https://doi.org/10.2208/jscejge.67.310
Autor:
Junichi Sakakibara, Tokuo Yamamoto
Publikováno v:
Doboku Gakkai Ronbunshuu C. 65:97-106
高周波数の弾性波を用いた高精度な地盤調査手法を開発した．本手法は擬似ランダム波を発振波として用いることで周波数を正確に制御すると共に，地盤中における減衰の影響を低減す
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8efdf5c2abb72dc25e7e935f99fb414b
https://doi.org/10.2208/jscejc.65.97
https://doi.org/10.2208/jscejc.65.97
Autor:
Junichi Sakakibara, Tokuo Yamamoto
Publikováno v:
SEG Technical Program Expanded Abstracts 2003.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b735bbbbc19ce48d667d722f99cfa6a3
https://doi.org/10.1190/1.1817799
https://doi.org/10.1190/1.1817799
Publikováno v:
The Journal of the Acoustical Society of America. 115:2399-2399
The velocity dispersion and attenuation of acoustic waves though a sandy bottom in a shallow ocean were measured for a broad frequency band of 1–500 kHz using a buried horizontal hydrophone array and several broadband piezoelectric sources. The san
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c09dcf337953b0d9cc1cc1df75a85da5
https://doi.org/10.1121/1.4780792
https://doi.org/10.1121/1.4780792
Autor:
Tokuo Yamamoto, Junichi Sakakibara
Publikováno v:
The Journal of the Acoustical Society of America. 114:2449-2449
The velocity and attenuation of sands and clays in shallow oceans were measured by cross‐hole tomography experiments using the pseudo‐random binary sequence (PRBS) as source signals with the PRBS frequency of 1 and 3 kHz. Using measured velocity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b12d74bb7a25e77ca35281e52b7d3817
https://doi.org/10.1121/1.4779423
https://doi.org/10.1121/1.4779423
Publikováno v:
The Journal of the Acoustical Society of America. 113:2319-2319
Imaging the permeability within sediments is one of the important problems that is not well investigated in geoacoustics. Acoustic wave energy scattered from velocity and density fluctuations within sediments increases the attenuation. However, only
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85dec90b06559da7a513e32ca5c62563
https://doi.org/10.1121/1.4780778
https://doi.org/10.1121/1.4780778
Publikováno v:
Zisin (Journal of the Seismological Society of Japan. 2nd ser.). 42:211-217
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11e5267818c3684e8bda2f6824996573
https://doi.org/10.4294/zisin1948.42.2_211
https://doi.org/10.4294/zisin1948.42.2_211