Constraints on the use of anthropogenic radionuclide-derived chronologies for saltmarsh sediments
Numerous studies have employed anthropogenic radionuclides deposited in accumulating sediments to derive chronologies for use in investigations of geomorphological processes and in reconstructing temporal trends in contaminant deposition. However, relatively few have interrogated their use in system...
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| Veröffentlicht in: | Journal of environmental radioactivity 2007-06, Vol.95 (2), p.126-148 |
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| creator | Harvey, M.M. Hansom, J.D. MacKenzie, A.B. |
| description | Numerous studies have employed anthropogenic radionuclides deposited in accumulating sediments to derive chronologies for use in investigations of geomorphological processes and in reconstructing temporal trends in contaminant deposition. However, relatively few have interrogated their use in systems that erode as well as accrete sediment, or have addressed limitations in their applicability in systems that experience variable rates of accumulation. This paper examines the utility of Sellafield-derived radionuclides for reconstructing sedimentary processes in two contrasting saltmarsh systems in the south-west of Scotland. Sedimentation rates and patterns derived from the radionuclide chronologies are outlined and compared to results established through conventional geomorphological methods.
The results confirm that the vertical distribution of anthropogenic radionuclides can be useful in determining sedimentation rates, but that these cannot always be used as indicators of contemporary processes, particularly where erosion is occurring. Their use is also limited unless profiles are obtained from spatially diverse geomorphological units. Integrating the use of chronologies with other independent methods secures more robust data for assessing both marsh sustainability and their longevity as radionuclide sinks. |
| doi_str_mv | 10.1016/j.jenvrad.2007.02.005 |
| format | Article |
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The results confirm that the vertical distribution of anthropogenic radionuclides can be useful in determining sedimentation rates, but that these cannot always be used as indicators of contemporary processes, particularly where erosion is occurring. Their use is also limited unless profiles are obtained from spatially diverse geomorphological units. Integrating the use of chronologies with other independent methods secures more robust data for assessing both marsh sustainability and their longevity as radionuclide sinks.</description><identifier>ISSN: 0265-931X</identifier><identifier>EISSN: 1879-1700</identifier><identifier>DOI: 10.1016/j.jenvrad.2007.02.005</identifier><identifier>PMID: 17490791</identifier><identifier>CODEN: JERAEE</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>137Cs ; 241Am ; Accretion ; Activity ratios ; Americium - analysis ; Cesium Radioisotopes - analysis ; Earth sciences ; Earth, ocean, space ; Engineering and environment geology. Geothermics ; Erosion ; Exact sciences and technology ; Geologic Sediments - analysis ; Isotope geochemistry ; Isotope geochemistry. Geochronology ; Marine and continental quaternary ; Pollution, environment geology ; Radioactive Pollutants - analysis ; Saltmarsh sediments ; Scotland ; Sellafield ; Surficial geology ; Wetlands</subject><ispartof>Journal of environmental radioactivity, 2007-06, Vol.95 (2), p.126-148</ispartof><rights>2007 Elsevier Ltd</rights><rights>2007 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a447t-8a374cc7c029dd6fe8e891a4a6e507df86349e88c1c65f3a6dc1c7d8e06d48993</citedby><cites>FETCH-LOGICAL-a447t-8a374cc7c029dd6fe8e891a4a6e507df86349e88c1c65f3a6dc1c7d8e06d48993</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jenvrad.2007.02.005$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27911,27912,45982</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18862461$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17490791$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Harvey, M.M.</creatorcontrib><creatorcontrib>Hansom, J.D.</creatorcontrib><creatorcontrib>MacKenzie, A.B.</creatorcontrib><title>Constraints on the use of anthropogenic radionuclide-derived chronologies for saltmarsh sediments</title><title>Journal of environmental radioactivity</title><addtitle>J Environ Radioact</addtitle><description>Numerous studies have employed anthropogenic radionuclides deposited in accumulating sediments to derive chronologies for use in investigations of geomorphological processes and in reconstructing temporal trends in contaminant deposition. However, relatively few have interrogated their use in systems that erode as well as accrete sediment, or have addressed limitations in their applicability in systems that experience variable rates of accumulation. This paper examines the utility of Sellafield-derived radionuclides for reconstructing sedimentary processes in two contrasting saltmarsh systems in the south-west of Scotland. Sedimentation rates and patterns derived from the radionuclide chronologies are outlined and compared to results established through conventional geomorphological methods.
The results confirm that the vertical distribution of anthropogenic radionuclides can be useful in determining sedimentation rates, but that these cannot always be used as indicators of contemporary processes, particularly where erosion is occurring. Their use is also limited unless profiles are obtained from spatially diverse geomorphological units. Integrating the use of chronologies with other independent methods secures more robust data for assessing both marsh sustainability and their longevity as radionuclide sinks.</description><subject>137Cs</subject><subject>241Am</subject><subject>Accretion</subject><subject>Activity ratios</subject><subject>Americium - analysis</subject><subject>Cesium Radioisotopes - analysis</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Engineering and environment geology. Geothermics</subject><subject>Erosion</subject><subject>Exact sciences and technology</subject><subject>Geologic Sediments - analysis</subject><subject>Isotope geochemistry</subject><subject>Isotope geochemistry. Geochronology</subject><subject>Marine and continental quaternary</subject><subject>Pollution, environment geology</subject><subject>Radioactive Pollutants - analysis</subject><subject>Saltmarsh sediments</subject><subject>Scotland</subject><subject>Sellafield</subject><subject>Surficial geology</subject><subject>Wetlands</subject><issn>0265-931X</issn><issn>1879-1700</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU1r3DAQhkVpaLZpf0KLLs3NzsiW9XEqZUk_INBLC70JVRpntXilrWQv5N9XyxpyzGmG4Zmv9yXkA4OWARN3-3aP8ZStbzsA2ULXAgyvyIYpqRsmAV6TDXRiaHTP_lyTt6XsAWpddW_INZNcg9RsQ-w2xTJnG-JcaIp03iFdCtI0UhvnXU7H9IgxOFo3hRQXNwWPjcccTuipq0BMU3oMWOiYMi12mg82lx0t6MMB69R35Gq0U8H3a7whv7_e_9p-bx5-fvux_fLQWM7l3CjbS-6cdNBp78WICpVmlluBA0g_KtFzjUo55sQw9lb4mkmvEITnSuv-htxe5h5z-rdgmc0hFIfTZCOmpRgJohsA-hdBxtVZJqjgcAFdTqVkHM0xh_rdk2FgziaYvVlNMGcTDHSmmlD7Pq4Llr8H9M9dq-oV-LQCtjg7jdlGF8ozp5TouDhzny8cVt1OAbMpLmB0VdqMbjY-hRdO-Q_mo6oY</recordid><startdate>200706</startdate><enddate>200706</enddate><creator>Harvey, M.M.</creator><creator>Hansom, J.D.</creator><creator>MacKenzie, A.B.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7X8</scope></search><sort><creationdate>200706</creationdate><title>Constraints on the use of anthropogenic radionuclide-derived chronologies for saltmarsh sediments</title><author>Harvey, M.M. ; Hansom, J.D. ; MacKenzie, A.B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a447t-8a374cc7c029dd6fe8e891a4a6e507df86349e88c1c65f3a6dc1c7d8e06d48993</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>137Cs</topic><topic>241Am</topic><topic>Accretion</topic><topic>Activity ratios</topic><topic>Americium - analysis</topic><topic>Cesium Radioisotopes - analysis</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Engineering and environment geology. Geothermics</topic><topic>Erosion</topic><topic>Exact sciences and technology</topic><topic>Geologic Sediments - analysis</topic><topic>Isotope geochemistry</topic><topic>Isotope geochemistry. Geochronology</topic><topic>Marine and continental quaternary</topic><topic>Pollution, environment geology</topic><topic>Radioactive Pollutants - analysis</topic><topic>Saltmarsh sediments</topic><topic>Scotland</topic><topic>Sellafield</topic><topic>Surficial geology</topic><topic>Wetlands</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Harvey, M.M.</creatorcontrib><creatorcontrib>Hansom, J.D.</creatorcontrib><creatorcontrib>MacKenzie, A.B.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of environmental radioactivity</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Harvey, M.M.</au><au>Hansom, J.D.</au><au>MacKenzie, A.B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Constraints on the use of anthropogenic radionuclide-derived chronologies for saltmarsh sediments</atitle><jtitle>Journal of environmental radioactivity</jtitle><addtitle>J Environ Radioact</addtitle><date>2007-06</date><risdate>2007</risdate><volume>95</volume><issue>2</issue><spage>126</spage><epage>148</epage><pages>126-148</pages><issn>0265-931X</issn><eissn>1879-1700</eissn><coden>JERAEE</coden><abstract>Numerous studies have employed anthropogenic radionuclides deposited in accumulating sediments to derive chronologies for use in investigations of geomorphological processes and in reconstructing temporal trends in contaminant deposition. However, relatively few have interrogated their use in systems that erode as well as accrete sediment, or have addressed limitations in their applicability in systems that experience variable rates of accumulation. This paper examines the utility of Sellafield-derived radionuclides for reconstructing sedimentary processes in two contrasting saltmarsh systems in the south-west of Scotland. Sedimentation rates and patterns derived from the radionuclide chronologies are outlined and compared to results established through conventional geomorphological methods.
The results confirm that the vertical distribution of anthropogenic radionuclides can be useful in determining sedimentation rates, but that these cannot always be used as indicators of contemporary processes, particularly where erosion is occurring. Their use is also limited unless profiles are obtained from spatially diverse geomorphological units. Integrating the use of chronologies with other independent methods secures more robust data for assessing both marsh sustainability and their longevity as radionuclide sinks.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><pmid>17490791</pmid><doi>10.1016/j.jenvrad.2007.02.005</doi><tpages>23</tpages></addata></record> |
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| subjects | 137Cs 241Am Accretion Activity ratios Americium - analysis Cesium Radioisotopes - analysis Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Erosion Exact sciences and technology Geologic Sediments - analysis Isotope geochemistry Isotope geochemistry. Geochronology Marine and continental quaternary Pollution, environment geology Radioactive Pollutants - analysis Saltmarsh sediments Scotland Sellafield Surficial geology Wetlands |
| title | Constraints on the use of anthropogenic radionuclide-derived chronologies for saltmarsh sediments |
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