{"refrec":{"BRefID":295119,"RR":"<b>Fukao, Y.; Sandanbata, O.; Sugioka, H.; Ito, A.; Shiobara, H.; Watada, S.; Satake, K.</b> (2018). Mechanism of the 2015 volcanic tsunami earthquake near Torishima, Japan. <i>Science Advances 4(4)</i>: eaao0219. <a href=\"https://dx.doi.org/10.1126/sciadv.aao0219\" target=\"_blank\">https://dx.doi.org/10.1126/sciadv.aao0219</a>","BEntID":287196,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Science Advances 4(4)</i>: eaao0219. <a href=\"https://dx.doi.org/10.1126/sciadv.aao0219\" target=\"_blank\">https://dx.doi.org/10.1126/sciadv.aao0219</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Fukao, Y.; Sandanbata, O.; Sugioka, H.; Ito, A.; Shiobara, H.; Watada, S.; Satake, K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Fukao, Y. <i>et al.</i>","Englishabstract":"Tsunami earthquakes are a group of enigmatic earthquakes generating disproportionally large tsunamis relative to seismic magnitude. These events occur most typically near deep-sea trenches. Tsunami earthquakes occurring approximately every 10 years near Torishima on the Izu-Bonin arc are another example. Seismic and tsunami waves from the 2015 event [<i>M</i><sub>w</sub> (moment magnitude) = 5.7] were recorded by an offshore seafloor array of 10 pressure gauges, ~100 km away from the epicenter. We made an array analysis of dispersive tsunamis to locate the tsunami source within the submarine Smith Caldera. The tsunami simulation from a large caldera-floor uplift of ~1.5 m with a small peripheral depression yielded waveforms remarkably similar to the observations. The estimated central uplift, 1.5 m, is ~20 times larger than that inferred from the seismologically determined non–double-couple source. Thus, the tsunami observation is not compatible with the published seismic source model taken at face value. However, given the indeterminacy of <i>M</i><sub>zx</sub>, <i>M</i><sub>zy</sub>, and <i>M</i><sub>{tensile}</sub> of a shallow moment tensor source, it may be possible to find a source mechanism with efficient tsunami but inefficient seismic radiation that can satisfactorily explain both the tsunami and seismic observations, but this question remains unresolved","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Mechanism of the 2015 volcanic tsunami earthquake near Torishima, Japan","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2018,"MonPub":null,"DateUpdate":"2018-04-30","DateCreate":"2018-04-30","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000431374900007","VABBcode":null,"OpenAcc":1,"DOI":"10.1126/sciadv.aao0219"},"refs":null,"anarec":{"AnaID":295119,"PubliDate":2018,"Pagination":"eaao0219","XtraPublOfAnaID":null,"ISBN":null,"Volume":"4","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":248966,"SerRR":"Science Advances. 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