Detection of hydroacoustic signals on a fiber-optic submarine cable

Abstract A ship-based seismic survey was conducted close to a fiber-optic submarine cable, and 50 km-long distributed acoustic sensing (DAS) recordings with air-gun shots were obtained for the first time. We examine the acquired DAS dataset together with the co-located hydrophones to investigate the...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Hiroyuki Matsumoto, Eiichiro Araki, Toshinori Kimura, Gou Fujie, Kazuya Shiraishi, Takashi Tonegawa, Koichiro Obana, Ryuta Arai, Yuka Kaiho, Yasuyuki Nakamura, Takashi Yokobiki, Shuichi Kodaira, Narumi Takahashi, Robert Ellwood, Victor Yartsev, Martin Karrenbach
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ed3c6ae66ce0407797cc3133815c9688
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:ed3c6ae66ce0407797cc3133815c9688
record_format	dspace
spelling	oai:doaj.org-article:ed3c6ae66ce0407797cc3133815c96882021-12-02T10:44:08ZDetection of hydroacoustic signals on a fiber-optic submarine cable10.1038/s41598-021-82093-82045-2322https://doaj.org/article/ed3c6ae66ce0407797cc3133815c96882021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82093-8https://doaj.org/toc/2045-2322Abstract A ship-based seismic survey was conducted close to a fiber-optic submarine cable, and 50 km-long distributed acoustic sensing (DAS) recordings with air-gun shots were obtained for the first time. We examine the acquired DAS dataset together with the co-located hydrophones to investigate the detection capability of underwater acoustic (hydroacoustic) signals. Here, we show the hydroacoustic signals identified by the DAS measurement characterizing in frequency-time space. The DAS measurement can be sensitive for hydroacoustic signals in a frequency range from $$10^{-1}\,\text {Hz}$$ 10 - 1 Hz to a few tens of Hz which is similar to the hydrophones. The observed phases of hydroacoustic signals are coherent within a few kilometers along the submarine cable, suggesting the DAS is suitable for applying correlation analysis using hydroacoustic signals. Although our study suggests that virtual sensor’s self-noise of the present DAS measurement is relatively high compared to the conventional in-situ hydroacoustic sensors above a few Hz, the DAS identifies the ocean microseismic background noise along the entire submarine cable except for some cable sections de-coupled from the seafloor.Hiroyuki MatsumotoEiichiro ArakiToshinori KimuraGou FujieKazuya ShiraishiTakashi TonegawaKoichiro ObanaRyuta AraiYuka KaihoYasuyuki NakamuraTakashi YokobikiShuichi KodairaNarumi TakahashiRobert EllwoodVictor YartsevMartin KarrenbachNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hiroyuki Matsumoto Eiichiro Araki Toshinori Kimura Gou Fujie Kazuya Shiraishi Takashi Tonegawa Koichiro Obana Ryuta Arai Yuka Kaiho Yasuyuki Nakamura Takashi Yokobiki Shuichi Kodaira Narumi Takahashi Robert Ellwood Victor Yartsev Martin Karrenbach Detection of hydroacoustic signals on a fiber-optic submarine cable
description	Abstract A ship-based seismic survey was conducted close to a fiber-optic submarine cable, and 50 km-long distributed acoustic sensing (DAS) recordings with air-gun shots were obtained for the first time. We examine the acquired DAS dataset together with the co-located hydrophones to investigate the detection capability of underwater acoustic (hydroacoustic) signals. Here, we show the hydroacoustic signals identified by the DAS measurement characterizing in frequency-time space. The DAS measurement can be sensitive for hydroacoustic signals in a frequency range from $$10^{-1}\,\text {Hz}$$ 10 - 1 Hz to a few tens of Hz which is similar to the hydrophones. The observed phases of hydroacoustic signals are coherent within a few kilometers along the submarine cable, suggesting the DAS is suitable for applying correlation analysis using hydroacoustic signals. Although our study suggests that virtual sensor’s self-noise of the present DAS measurement is relatively high compared to the conventional in-situ hydroacoustic sensors above a few Hz, the DAS identifies the ocean microseismic background noise along the entire submarine cable except for some cable sections de-coupled from the seafloor.
format	article
author	Hiroyuki Matsumoto Eiichiro Araki Toshinori Kimura Gou Fujie Kazuya Shiraishi Takashi Tonegawa Koichiro Obana Ryuta Arai Yuka Kaiho Yasuyuki Nakamura Takashi Yokobiki Shuichi Kodaira Narumi Takahashi Robert Ellwood Victor Yartsev Martin Karrenbach
author_facet	Hiroyuki Matsumoto Eiichiro Araki Toshinori Kimura Gou Fujie Kazuya Shiraishi Takashi Tonegawa Koichiro Obana Ryuta Arai Yuka Kaiho Yasuyuki Nakamura Takashi Yokobiki Shuichi Kodaira Narumi Takahashi Robert Ellwood Victor Yartsev Martin Karrenbach
author_sort	Hiroyuki Matsumoto
title	Detection of hydroacoustic signals on a fiber-optic submarine cable
title_short	Detection of hydroacoustic signals on a fiber-optic submarine cable
title_full	Detection of hydroacoustic signals on a fiber-optic submarine cable
title_fullStr	Detection of hydroacoustic signals on a fiber-optic submarine cable
title_full_unstemmed	Detection of hydroacoustic signals on a fiber-optic submarine cable
title_sort	detection of hydroacoustic signals on a fiber-optic submarine cable
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ed3c6ae66ce0407797cc3133815c9688
work_keys_str_mv	AT hiroyukimatsumoto detectionofhydroacousticsignalsonafiberopticsubmarinecable AT eiichiroaraki detectionofhydroacousticsignalsonafiberopticsubmarinecable AT toshinorikimura detectionofhydroacousticsignalsonafiberopticsubmarinecable AT goufujie detectionofhydroacousticsignalsonafiberopticsubmarinecable AT kazuyashiraishi detectionofhydroacousticsignalsonafiberopticsubmarinecable AT takashitonegawa detectionofhydroacousticsignalsonafiberopticsubmarinecable AT koichiroobana detectionofhydroacousticsignalsonafiberopticsubmarinecable AT ryutaarai detectionofhydroacousticsignalsonafiberopticsubmarinecable AT yukakaiho detectionofhydroacousticsignalsonafiberopticsubmarinecable AT yasuyukinakamura detectionofhydroacousticsignalsonafiberopticsubmarinecable AT takashiyokobiki detectionofhydroacousticsignalsonafiberopticsubmarinecable AT shuichikodaira detectionofhydroacousticsignalsonafiberopticsubmarinecable AT narumitakahashi detectionofhydroacousticsignalsonafiberopticsubmarinecable AT robertellwood detectionofhydroacousticsignalsonafiberopticsubmarinecable AT victoryartsev detectionofhydroacousticsignalsonafiberopticsubmarinecable AT martinkarrenbach detectionofhydroacousticsignalsonafiberopticsubmarinecable
_version_	1718396861178445824

Detection of hydroacoustic signals on a fiber-optic submarine cable

Ejemplares similares