Impact of tsunami inundation on soil salinsaltion - up to one year after the 2011 Tohoku-okitsunami

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dc.contributor.authorChagué-Goff, Cen_AU
dc.contributor.authorWong, HKYen_AU
dc.contributor.authorSugawara, Den_AU
dc.contributor.authorGoff, JRen_AU
dc.contributor.authorNishimura, Yen_AU
dc.contributor.authorBeer, Jen_AU
dc.contributor.authorSzczuciński, Wen_AU
dc.contributor.authorGoto, Ken_AU
dc.date.accessioned2017-01-11T23:26:54Zen_AU
dc.date.available2017-01-11T23:26:54Zen_AU
dc.date.issued2013-09-27en_AU
dc.date.statistics2016-01-12en_AU
dc.description.abstractThe long-term effect of tsunami inundation on soil salinisation was assessed following the 2011 Tohoku-oki tsunami in two areas on the Sendai Plain, near Sendai airport in the Miyagi Prefecture and Matsukawa-ura near Soma in the Fukushima Prefecture. Data gathered over four sampling seasons 2, 5, 9 and 11 months after the tsunami near Sendai airport show that the salt content generally decreased with time. Concentrations were nevertheless higher in February 2012 than in October 2011, probably due to capillary action and evaporation following long periods with little precipitation in the winter, while the lower concentrations in October were attributed to dilution due to intense rainfall prior to the sampling period. In February 2012, the area with chloride concentrations over the guidelines for the establishment of rice seedlings still extended for nearly 1 km between 2.45 and 3.33 km inland. Chloride concentrations also reached the guideline values at the land surface 1.71 km inland. This corresponded to the limit of the area deemed not suitable for rice production by local rice farmers. However, recent observations revealed that rice crops were not only halted in 2011 but also in 2012, probably due to high salinisation of soil and/or surface and groundwater. Our study shows that soil salinisation was still recorded to nearly 15 cm depth in areas with fine-grained organic-rich soil ~2.5 km from the shoreline 11 months after the tsunami, and that water-leachable ions were preferentially retained in organic-rich muddy sediment and soil, reflecting the long-term impact of tsunami inundation. In Matsukawa-ura, salt crusts still covered the area flooded by the tsunami in February 2012 and both the soil and muddy tsunami deposit were characterised by high chloride and sulphate concentrations. The latter might also lead to sulphide toxicity. Remediation measures have been implemented in certain areas, but further research needs to be carried out to test the effectiveness of the measures being used to allow rice production to resume. © 2014, Springer Science+Business Media Dordrecht.en_AU
dc.identifier.booktitleTsunami Events and Lessons Learned: Environmental and Societal Significance. Advances in Natural and Technological Hazards Researchen_AU
dc.identifier.booktitleTsunami Events and Lessons Learned: Environmental and Societal Significance. Advances in Natural and Technological Hazards Researchen_AU
dc.identifier.citationChagué-Goff, C., Wong, H. K. Y., Sugawara, D., Goff, J., Nishimura, Y., Beer, J., Szczuciński, W. & Goto, K. (2014). Impact of tsunami inundation on soil salinisation – up to one year after the 2011 Tohoku-oki tsunami. In Y. A. Kontar, V. Santiago-Fandiño & T. Takahashi (Eds.), Tsunami Events and Lessons Learned: Environmental and Societal Significance. Advances in Natural and Technological Hazards Research (pp. 193-214). Dordrecht: Springer Science and Business Media. doi:10.1007/978-94-007-7269-4_10en_AU
dc.identifier.editorsY. A. Kontar, V. Santiago-Fandiño & T. Takahashien_AU
dc.identifier.editorsY. A. Kontar, V. Santiago-Fandi�o & T. Takahashien_AU
dc.identifier.govdoc7766en_AU
dc.identifier.issn978-94-007-7269-4en_AU
dc.identifier.pagination193-214en_AU
dc.identifier.pagination193-214en_AU
dc.identifier.placeofpublicationDordrecht, Netherlandsen_AU
dc.identifier.placeofpublicationDordrecht, Switzerlanden_AU
dc.identifier.urihttps://doi.org/10.1007/978-94-007-7269-4_10en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/8242en_AU
dc.identifier.volume35en_AU
dc.identifier.volume35en_AU
dc.language.isoenen_AU
dc.publisherSpringeren_AU
dc.subjectTsunamisen_AU
dc.subjectSalinityen_AU
dc.subjectRainen_AU
dc.subjectChloridesen_AU
dc.subjectSoilsen_AU
dc.subjectSamplingen_AU
dc.titleImpact of tsunami inundation on soil salinsaltion - up to one year after the 2011 Tohoku-okitsunamien_AU
dc.typeBook chapteren_AU
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