Influence of normal tide and the Great Tsunami as recorded through hourly-resolution micro-analysis of a mussel shell

Abstract We report here hourly variations of Mg/Ca, Sr/Ca, and Ba/Ca ratios in a Mediterranean mussel shell (Mytilus galloprovincialis) collected at the Otsuchi bay, on the Pacific coast of northeastern Japan. This bivalve was living in the intertidal zone, where such organisms are known to form a d...

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Autores principales:	Yuji Sano, Tomoyo Okumura, Naoko Murakami-Sugihara, Kentaro Tanaka, Takanori Kagoshima, Akizumi Ishida, Masako Hori, Glen T. Snyder, Naoto Takahata, Kotaro Shirai
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5973f6c72f5e4857bf3ec007fc39ddff
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spelling	oai:doaj.org-article:5973f6c72f5e4857bf3ec007fc39ddff2021-12-02T18:37:09ZInfluence of normal tide and the Great Tsunami as recorded through hourly-resolution micro-analysis of a mussel shell10.1038/s41598-021-99361-22045-2322https://doaj.org/article/5973f6c72f5e4857bf3ec007fc39ddff2021-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-99361-2https://doaj.org/toc/2045-2322Abstract We report here hourly variations of Mg/Ca, Sr/Ca, and Ba/Ca ratios in a Mediterranean mussel shell (Mytilus galloprovincialis) collected at the Otsuchi bay, on the Pacific coast of northeastern Japan. This bivalve was living in the intertidal zone, where such organisms are known to form a daily or bidaily growth line comprised of abundant organic matter. Mg/Ca ratios of the inner surface of the outer shell layer, corresponding to the most recent date, show cyclic changes at 25–90 μm intervals, while no interpretable variations are observed in Sr/Ca and Ba/Ca ratios. High Mg/Ca ratios were probably established by (1) cessation of the external supply of Ca and organic layer forming when the shell is closed at low tide, and (2) the strong binding of Mg to the organic layer, but not of Sr and Ba. Immediately following the great tsunami induced by the 2011 Tohoku earthquake, Mg/Ca enrichment occurred, up to 10 times that of normal low tide, while apparent Ba/Ca enrichment was observed for only a few days following the event, therefore serving a proxy of the past tsunami. Following the tsunami, periodic peaks and troughs in Mg/Ca continued, perhaps due to a biological memory effect as an endogenous clock.Yuji SanoTomoyo OkumuraNaoko Murakami-SugiharaKentaro TanakaTakanori KagoshimaAkizumi IshidaMasako HoriGlen T. SnyderNaoto TakahataKotaro ShiraiNature 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 Yuji Sano Tomoyo Okumura Naoko Murakami-Sugihara Kentaro Tanaka Takanori Kagoshima Akizumi Ishida Masako Hori Glen T. Snyder Naoto Takahata Kotaro Shirai Influence of normal tide and the Great Tsunami as recorded through hourly-resolution micro-analysis of a mussel shell
description	Abstract We report here hourly variations of Mg/Ca, Sr/Ca, and Ba/Ca ratios in a Mediterranean mussel shell (Mytilus galloprovincialis) collected at the Otsuchi bay, on the Pacific coast of northeastern Japan. This bivalve was living in the intertidal zone, where such organisms are known to form a daily or bidaily growth line comprised of abundant organic matter. Mg/Ca ratios of the inner surface of the outer shell layer, corresponding to the most recent date, show cyclic changes at 25–90 μm intervals, while no interpretable variations are observed in Sr/Ca and Ba/Ca ratios. High Mg/Ca ratios were probably established by (1) cessation of the external supply of Ca and organic layer forming when the shell is closed at low tide, and (2) the strong binding of Mg to the organic layer, but not of Sr and Ba. Immediately following the great tsunami induced by the 2011 Tohoku earthquake, Mg/Ca enrichment occurred, up to 10 times that of normal low tide, while apparent Ba/Ca enrichment was observed for only a few days following the event, therefore serving a proxy of the past tsunami. Following the tsunami, periodic peaks and troughs in Mg/Ca continued, perhaps due to a biological memory effect as an endogenous clock.
format	article
author	Yuji Sano Tomoyo Okumura Naoko Murakami-Sugihara Kentaro Tanaka Takanori Kagoshima Akizumi Ishida Masako Hori Glen T. Snyder Naoto Takahata Kotaro Shirai
author_facet	Yuji Sano Tomoyo Okumura Naoko Murakami-Sugihara Kentaro Tanaka Takanori Kagoshima Akizumi Ishida Masako Hori Glen T. Snyder Naoto Takahata Kotaro Shirai
author_sort	Yuji Sano
title	Influence of normal tide and the Great Tsunami as recorded through hourly-resolution micro-analysis of a mussel shell
title_short	Influence of normal tide and the Great Tsunami as recorded through hourly-resolution micro-analysis of a mussel shell
title_full	Influence of normal tide and the Great Tsunami as recorded through hourly-resolution micro-analysis of a mussel shell
title_fullStr	Influence of normal tide and the Great Tsunami as recorded through hourly-resolution micro-analysis of a mussel shell
title_full_unstemmed	Influence of normal tide and the Great Tsunami as recorded through hourly-resolution micro-analysis of a mussel shell
title_sort	influence of normal tide and the great tsunami as recorded through hourly-resolution micro-analysis of a mussel shell
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5973f6c72f5e4857bf3ec007fc39ddff
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Influence of normal tide and the Great Tsunami as recorded through hourly-resolution micro-analysis of a mussel shell

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