Sediments of Matsushima Bay, Northeastern Japan: Insights Gained From 5 Years of Sedimentological Analysis Following the 2011 Tohoku Earthquake‐Tsunami
Matsushima Bay was less affected by the 2011 Tohoku Earthquake Tsunami than other Pacific coastal areas of northeast Japan because of the sheltering effects of islands in the bay mouth. To understand the recovery from the 2011 tsunami of benthic environments in Matsushima Bay, we conducted surveys o...
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| Veröffentlicht in: | Geochemistry, geophysics, geosystems : G3 geophysics, geosystems : G3, 2019-08, Vol.20 (8), p.3913-3927 |
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| creator | Ota, Yuki Suzuki, Atsushi Yamaoka, Kyoko Nagao, Masayuki Tanaka, Yuichiro Irizuki, Toshiaki Fujiwara, Osamu Yoshioka, Kaoru Kawagata, Shungo Kawano, Shigenori Nishimura, Osamu |
| description | Matsushima Bay was less affected by the 2011 Tohoku Earthquake Tsunami than other Pacific coastal areas of northeast Japan because of the sheltering effects of islands in the bay mouth. To understand the recovery from the 2011 tsunami of benthic environments in Matsushima Bay, we conducted surveys of the geochemical properties of surface sediments over 5 years following the earthquake and compared them to sedimentary data before the earthquake. Before the tsunami, the mud fraction ( |
| doi_str_mv | 10.1029/2019GC008381 |
| format | Article |
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Key Points
Sediment geochemistry and grain size in Matsushima Bay after the 2011 Tohoku Earthquake Tsunami were analyzed
Changed distribution of mud content in the bay due to the tsunami event returned in 2016 to the condition before the tsunami event
Organic matter composition in Matsushima Bay had not recovered to pretsunami conditions by 2016</description><identifier>ISSN: 1525-2027</identifier><identifier>EISSN: 1525-2027</identifier><identifier>DOI: 10.1029/2019GC008381</identifier><language>eng</language><publisher>Washington: John Wiley & Sons, Inc</publisher><subject>2011 Tohoku earthquake tsunami ; Benthic environment ; Benthos ; Biogeochemical cycle ; Biogeochemical cycles ; Biogeochemistry ; Carbon-nitrogen ratio ; Coastal zone ; Cores ; Earthquakes ; Ecosystems ; geochemistry ; grain size ; Islands ; Matsushima Bay sediment ; Mud ; Organic carbon ; Organic matter ; Sediment ; Sediment samples ; Sediment sources ; Sediment transport ; Sediments ; Seismic activity ; Slopes ; Surveys ; Total organic carbon ; Trace elements ; Tsunamis</subject><ispartof>Geochemistry, geophysics, geosystems : G3, 2019-08, Vol.20 (8), p.3913-3927</ispartof><rights>2019. American Geophysical Union. All Rights Reserved.</rights><rights>American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a4344-beff648c4ef2a6bd331b170a108ebacca76d2ade865102e5cb7bcedd4301d2383</citedby><cites>FETCH-LOGICAL-a4344-beff648c4ef2a6bd331b170a108ebacca76d2ade865102e5cb7bcedd4301d2383</cites><orcidid>0000-0001-7749-5919 ; 0000-0003-4279-5107 ; 0000-0001-7649-8413</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2019GC008381$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2019GC008381$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,11541,27901,27902,45550,45551,46027,46451</link.rule.ids><linktorsrc>$$Uhttps://onlinelibrary.wiley.com/doi/abs/10.1029%2F2019GC008381$$EView_record_in_Wiley-Blackwell$$FView_record_in_$$GWiley-Blackwell</linktorsrc></links><search><creatorcontrib>Ota, Yuki</creatorcontrib><creatorcontrib>Suzuki, Atsushi</creatorcontrib><creatorcontrib>Yamaoka, Kyoko</creatorcontrib><creatorcontrib>Nagao, Masayuki</creatorcontrib><creatorcontrib>Tanaka, Yuichiro</creatorcontrib><creatorcontrib>Irizuki, Toshiaki</creatorcontrib><creatorcontrib>Fujiwara, Osamu</creatorcontrib><creatorcontrib>Yoshioka, Kaoru</creatorcontrib><creatorcontrib>Kawagata, Shungo</creatorcontrib><creatorcontrib>Kawano, Shigenori</creatorcontrib><creatorcontrib>Nishimura, Osamu</creatorcontrib><title>Sediments of Matsushima Bay, Northeastern Japan: Insights Gained From 5 Years of Sedimentological Analysis Following the 2011 Tohoku Earthquake‐Tsunami</title><title>Geochemistry, geophysics, geosystems : G3</title><description>Matsushima Bay was less affected by the 2011 Tohoku Earthquake Tsunami than other Pacific coastal areas of northeast Japan because of the sheltering effects of islands in the bay mouth. To understand the recovery from the 2011 tsunami of benthic environments in Matsushima Bay, we conducted surveys of the geochemical properties of surface sediments over 5 years following the earthquake and compared them to sedimentary data before the earthquake. Before the tsunami, the mud fraction (<63‐μm size) proportion of the surface sediments varied over a wide range, whereas after the tsunami, the mud content range was relatively narrow. During 2012–2015, the mud content was linearly correlated with the total organic carbon (TOC) content, but the slope of the relationship differed from that before the tsunami. The tightly coupled mud‐TOC relationship and the almost constant C/N ratios in the surface sediments suggest that the bay sediments were resuspended and transported by the tsunami. In addition, loss of some organic matter sources in the bay may partly account for the uniform C/N ratios. By 2016, the slope of the mud‐TOC relationship was almost the same as the pretsunami value, but the C/N ratios remained constant. These results suggest that ecosystems and biogeochemical cycles in the bay had not yet fully recovered their pretsunami state. Trace element compositions of core samples indicated that sediment sources were little changed by the tsunami, probably because islands in the mouth of the bay reduced sediment transport into the bay from distant sources.
Key Points
Sediment geochemistry and grain size in Matsushima Bay after the 2011 Tohoku Earthquake Tsunami were analyzed
Changed distribution of mud content in the bay due to the tsunami event returned in 2016 to the condition before the tsunami event
Organic matter composition in Matsushima Bay had not recovered to pretsunami conditions by 2016</description><subject>2011 Tohoku earthquake tsunami</subject><subject>Benthic environment</subject><subject>Benthos</subject><subject>Biogeochemical cycle</subject><subject>Biogeochemical cycles</subject><subject>Biogeochemistry</subject><subject>Carbon-nitrogen ratio</subject><subject>Coastal zone</subject><subject>Cores</subject><subject>Earthquakes</subject><subject>Ecosystems</subject><subject>geochemistry</subject><subject>grain size</subject><subject>Islands</subject><subject>Matsushima Bay sediment</subject><subject>Mud</subject><subject>Organic carbon</subject><subject>Organic matter</subject><subject>Sediment</subject><subject>Sediment samples</subject><subject>Sediment sources</subject><subject>Sediment transport</subject><subject>Sediments</subject><subject>Seismic activity</subject><subject>Slopes</subject><subject>Surveys</subject><subject>Total organic carbon</subject><subject>Trace elements</subject><subject>Tsunamis</subject><issn>1525-2027</issn><issn>1525-2027</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kDtOw0AQQC0EEiHQcYCVaBPYj790IUpMUICCUFBZY3ucbOJ4w66tyB1HoOV6nISFgJSKaqZ4ejN6jnPO6CWjPLrilEXxkNJQhOzA6TCPe31OeXC4tx87J8YsKWWu54Ud5-MJc7nGqjZEFeQeatOYhVwDuYG2Rx6UrhcIpkZdkTvYQHVNJpWR84XlY5AV5mSs1Zp45AVB_zj-hKpUc5lBSQYVlK2RhoxVWaqtrObESol9lpGZWqhVQ0Zg77w2sMLPt_eZaSpYy1PnqIDS4Nnv7DrP49FseNufPsaT4WDaB1e4bj_FovDdMHOx4OCnuRAsZQEFRkNMIcsg8HMOOYa-Zxuhl6VBmmGeu4KynItQdJ2LnXej1WuDpk6WqtH2Z5NwHkV-yDzKLdXbUZlWxmgsko22mXSbMJp8x0_241tc7PCtLLH9l03iOB5xFgWu-AJ3fohb</recordid><startdate>201908</startdate><enddate>201908</enddate><creator>Ota, Yuki</creator><creator>Suzuki, Atsushi</creator><creator>Yamaoka, Kyoko</creator><creator>Nagao, Masayuki</creator><creator>Tanaka, Yuichiro</creator><creator>Irizuki, Toshiaki</creator><creator>Fujiwara, Osamu</creator><creator>Yoshioka, Kaoru</creator><creator>Kawagata, Shungo</creator><creator>Kawano, Shigenori</creator><creator>Nishimura, Osamu</creator><general>John Wiley & Sons, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>KL.</scope><scope>L.G</scope><orcidid>https://orcid.org/0000-0001-7749-5919</orcidid><orcidid>https://orcid.org/0000-0003-4279-5107</orcidid><orcidid>https://orcid.org/0000-0001-7649-8413</orcidid></search><sort><creationdate>201908</creationdate><title>Sediments of Matsushima Bay, Northeastern Japan: Insights Gained From 5 Years of Sedimentological Analysis Following the 2011 Tohoku Earthquake‐Tsunami</title><author>Ota, Yuki ; Suzuki, Atsushi ; Yamaoka, Kyoko ; Nagao, Masayuki ; Tanaka, Yuichiro ; Irizuki, Toshiaki ; Fujiwara, Osamu ; Yoshioka, Kaoru ; Kawagata, Shungo ; Kawano, Shigenori ; Nishimura, Osamu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a4344-beff648c4ef2a6bd331b170a108ebacca76d2ade865102e5cb7bcedd4301d2383</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>2011 Tohoku earthquake tsunami</topic><topic>Benthic environment</topic><topic>Benthos</topic><topic>Biogeochemical cycle</topic><topic>Biogeochemical cycles</topic><topic>Biogeochemistry</topic><topic>Carbon-nitrogen ratio</topic><topic>Coastal zone</topic><topic>Cores</topic><topic>Earthquakes</topic><topic>Ecosystems</topic><topic>geochemistry</topic><topic>grain size</topic><topic>Islands</topic><topic>Matsushima Bay sediment</topic><topic>Mud</topic><topic>Organic carbon</topic><topic>Organic matter</topic><topic>Sediment</topic><topic>Sediment samples</topic><topic>Sediment sources</topic><topic>Sediment transport</topic><topic>Sediments</topic><topic>Seismic activity</topic><topic>Slopes</topic><topic>Surveys</topic><topic>Total organic carbon</topic><topic>Trace elements</topic><topic>Tsunamis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ota, Yuki</creatorcontrib><creatorcontrib>Suzuki, Atsushi</creatorcontrib><creatorcontrib>Yamaoka, Kyoko</creatorcontrib><creatorcontrib>Nagao, Masayuki</creatorcontrib><creatorcontrib>Tanaka, Yuichiro</creatorcontrib><creatorcontrib>Irizuki, Toshiaki</creatorcontrib><creatorcontrib>Fujiwara, Osamu</creatorcontrib><creatorcontrib>Yoshioka, Kaoru</creatorcontrib><creatorcontrib>Kawagata, Shungo</creatorcontrib><creatorcontrib>Kawano, Shigenori</creatorcontrib><creatorcontrib>Nishimura, Osamu</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Geochemistry, geophysics, geosystems : G3</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Ota, Yuki</au><au>Suzuki, Atsushi</au><au>Yamaoka, Kyoko</au><au>Nagao, Masayuki</au><au>Tanaka, Yuichiro</au><au>Irizuki, Toshiaki</au><au>Fujiwara, Osamu</au><au>Yoshioka, Kaoru</au><au>Kawagata, Shungo</au><au>Kawano, Shigenori</au><au>Nishimura, Osamu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Sediments of Matsushima Bay, Northeastern Japan: Insights Gained From 5 Years of Sedimentological Analysis Following the 2011 Tohoku Earthquake‐Tsunami</atitle><jtitle>Geochemistry, geophysics, geosystems : G3</jtitle><date>2019-08</date><risdate>2019</risdate><volume>20</volume><issue>8</issue><spage>3913</spage><epage>3927</epage><pages>3913-3927</pages><issn>1525-2027</issn><eissn>1525-2027</eissn><abstract>Matsushima Bay was less affected by the 2011 Tohoku Earthquake Tsunami than other Pacific coastal areas of northeast Japan because of the sheltering effects of islands in the bay mouth. To understand the recovery from the 2011 tsunami of benthic environments in Matsushima Bay, we conducted surveys of the geochemical properties of surface sediments over 5 years following the earthquake and compared them to sedimentary data before the earthquake. Before the tsunami, the mud fraction (<63‐μm size) proportion of the surface sediments varied over a wide range, whereas after the tsunami, the mud content range was relatively narrow. During 2012–2015, the mud content was linearly correlated with the total organic carbon (TOC) content, but the slope of the relationship differed from that before the tsunami. The tightly coupled mud‐TOC relationship and the almost constant C/N ratios in the surface sediments suggest that the bay sediments were resuspended and transported by the tsunami. In addition, loss of some organic matter sources in the bay may partly account for the uniform C/N ratios. By 2016, the slope of the mud‐TOC relationship was almost the same as the pretsunami value, but the C/N ratios remained constant. These results suggest that ecosystems and biogeochemical cycles in the bay had not yet fully recovered their pretsunami state. Trace element compositions of core samples indicated that sediment sources were little changed by the tsunami, probably because islands in the mouth of the bay reduced sediment transport into the bay from distant sources.
Key Points
Sediment geochemistry and grain size in Matsushima Bay after the 2011 Tohoku Earthquake Tsunami were analyzed
Changed distribution of mud content in the bay due to the tsunami event returned in 2016 to the condition before the tsunami event
Organic matter composition in Matsushima Bay had not recovered to pretsunami conditions by 2016</abstract><cop>Washington</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1029/2019GC008381</doi><tpages>15</tpages><orcidid>https://orcid.org/0000-0001-7749-5919</orcidid><orcidid>https://orcid.org/0000-0003-4279-5107</orcidid><orcidid>https://orcid.org/0000-0001-7649-8413</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | 2011 Tohoku earthquake tsunami Benthic environment Benthos Biogeochemical cycle Biogeochemical cycles Biogeochemistry Carbon-nitrogen ratio Coastal zone Cores Earthquakes Ecosystems geochemistry grain size Islands Matsushima Bay sediment Mud Organic carbon Organic matter Sediment Sediment samples Sediment sources Sediment transport Sediments Seismic activity Slopes Surveys Total organic carbon Trace elements Tsunamis |
| title | Sediments of Matsushima Bay, Northeastern Japan: Insights Gained From 5 Years of Sedimentological Analysis Following the 2011 Tohoku Earthquake‐Tsunami |
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