{"refrec":{"BRefID":334897,"RR":"<b>Matsumoto, H.; Araki, E.; Kimura, T.; Fujie, G.; Shiraishi, K.; Tonegawa, T.; Obana, K.; Arai, R.; Kaiho, Y.; Nakamura, Y.; Yokobiki, T.; Kodaira, S.; Takahashi, N.; Ellwood, R.; Yartsev, V.; Karrenbach, M.</b> (2021). Detection of hydroacoustic signals on a fiber-optic submarine cable. <i>NPG Scientific Reports 11(1)</i>: 2797. <a href=\"https://dx.doi.org/10.1038/s41598-021-82093-8\" target=\"_blank\">https://dx.doi.org/10.1038/s41598-021-82093-8</a>","BEntID":331454,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>NPG Scientific Reports 11(1)</i>: 2797. <a href=\"https://dx.doi.org/10.1038/s41598-021-82093-8\" target=\"_blank\">https://dx.doi.org/10.1038/s41598-021-82093-8</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Matsumoto, H.; Araki, E.; Kimura, T.; Fujie, G.; Shiraishi, K.; Tonegawa, T.; Obana, K.; Arai, R.; Kaiho, Y.; Nakamura, Y.; Yokobiki, T.; Kodaira, S.; Takahashi, N.; Ellwood, R.; Yartsev, V.; Karrenbach, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Matsumoto, H. <i>et al.</i>","Englishabstract":"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 <span class=\"mathjax-tex\"><span class=\"MathJax_Preview\" style=\"\"></span><span class=\"MathJax\" id=\"MathJax-Element-1-Frame\" tabindex=\"0\" style=\"position: relative;\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><msup><mn>10</mn><mrow class=&quot;MJX-TeXAtom-ORD&quot;><mo>&amp;#x2212;</mo><mn>1</mn></mrow></msup><mspace width=&quot;thinmathspace&quot; /><mtext>Hz</mtext></math>\" role=\"presentation\"><nobr aria-hidden=\"true\"><span class=\"math\" id=\"MathJax-Span-1\" style=\"width: 3.723em; display: inline-block;\"><span style=\"display: inline-block; position: relative; width: 3.323em; height: 0px; font-size: 112%;\"><span style=\"position: absolute; clip: rect(1.319em, 1003.28em, 2.502em, -1000em); top: -2.331em; left: 0em;\"><span class=\"mrow\" id=\"MathJax-Span-2\"><span class=\"msubsup\" id=\"MathJax-Span-3\"><span style=\"display: inline-block; position: relative; width: 1.979em; height: 0px;\"><span style=\"position: absolute; clip: rect(3.203em, 1000.96em, 4.189em, -1000em); top: -4.018em; left: 0em;\"><span class=\"mn\" id=\"MathJax-Span-4\" style=\"font-family: MathJax_Main;\">10</span><span style=\"display: inline-block; width: 0px; height: 4.018em;\"></span></span><span style=\"position: absolute; top: -4.411em; left: 1em;\"><span class=\"texatom\" id=\"MathJax-Span-5\"><span class=\"mrow\" id=\"MathJax-Span-6\"><span class=\"mo\" id=\"MathJax-Span-7\" style=\"font-size: 70.7%; font-family: MathJax_Main;\">−</span><span class=\"mn\" id=\"MathJax-Span-8\" style=\"font-size: 70.7%; font-family: MathJax_Main;\">1</span></span></span><span style=\"display: inline-block; width: 0px; height: 4.018em;\"></span></span></span></span><span class=\"mspace\" id=\"MathJax-Span-9\" style=\"height: 0em; vertical-align: 0em; width: 0.167em; display: inline-block; overflow: hidden;\"></span><span class=\"mtext\" id=\"MathJax-Span-10\" style=\"font-family: MathJax_Main;\">Hz</span></span><span style=\"display: inline-block; width: 0px; height: 2.331em;\"></span></span></span><span style=\"display: inline-block; overflow: hidden; vertical-align: -0.08em; border-left: 0px solid; width: 0px; height: 1.103em;\"></span></span></nobr>","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Detection of hydroacoustic signals on a fiber-optic submarine cable","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-15 01:33:29.788197","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2021-03-16","DateCreate":"2021-03-16","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000617706100034","VABBcode":null,"OpenAcc":1,"DOI":"10.1038/s41598-021-82093-8"},"refs":null,"anarec":{"AnaID":334897,"PubliDate":2021,"Pagination":"2797","XtraPublOfAnaID":null,"ISBN":null,"Volume":"11","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":208093,"SerRR":"Scientific Reports (Nature Publishing Group). 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