Developing a Salt-Removal Plan to Remedy Tsunami-caused Salinity Damage to Farmlands: Case Study for an Area in Southern Thailand

Nakaya, Tomoki; Tanji, Hajime; Kiri, Hirohide; Hamada, Hiromasa

doi:10.6090/jarq.44.159

Cited by 10 publications

(9 citation statements)

References 2 publications

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“…For example, salinization caused by the 2004 Indian Ocean tsunami (as indicated by electrical conductivity and Na + , K + , Ca 2 + , Mg 2 + , and Cl – contents) almost disappeared after one rainy season (Szczuciński et al ; Chandrasekharan et al ; Kume et al ; Raja et al ; Nakaya et al ). Nakaya et al () reported that soil salinity was almost completely eliminated by 1000 mm or more of rainfall after the tsunami. At our study site, precipitation between the March 2011 tsunami and the June or August 2011 sampling date (about 620 mm or 760 mm, respectively; Japan Meteorological Agency ) was apparently not enough to remove all soil salinity, and water‐leachable ions were still measurable in our 2011 samples.…”

Section: Discussionmentioning

confidence: 99%

“…Rainfall and seepage probably account for the decrease in ion concentrations. For example, salinization caused by the 2004 Indian Ocean tsunami (as indicated by electrical conductivity and Na + , K + , Ca 2+ , Mg 2+ , and Clcontents) almost disappeared after one rainy season (Szczuciński et al 2007;Chandrasekharan et al 2008;Kume et al 2009;Raja et al 2009;Nakaya et al 2010). Nakaya et al (2010 reported that soil salinity was almost completely eliminated by 1000 mm or more of rainfall after the tsunami.…”

Section: Water-leachable Ionsmentioning

confidence: 99%

“…However, these chemical indicators of salinization disappeared after one rainy season (e.g. Szczuciński et al ; Nakaya et al ). Salinization was also documented in Samoa after the 2009 South Pacific tsunami (Chagué‐Goff et al ) and in Chile after the 2010 Maule tsunami (Yoshii et al ; Chagué‐Goff et al ).…”

Section: Introductionmentioning

confidence: 99%

“…However, these chemical indicators of salinization disappeared after one rainy season (e.g. Szczuciński et al 2007;Nakaya et al 2010). Salinization was also documented in Samoa after the 2009 South Pacific tsunami The 2011 Tohoku-oki tsunami led to a large number of studies dealing with various aspects of tsunami geochemistry.…”

Section: Introductionmentioning

confidence: 99%

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Geochemical characteristics of deposits from the 2011 Tohoku‐oki tsunami at Hasunuma, Kujukuri coastal plain, Japan

et al. 2016

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We examined the geochemical characteristics and temporal changes of deposits associated with the 2011 Tohoku‐oki tsunami. Stable carbon isotope ratios, biomarkers, and water‐leachable ions were measured in a sandy tsunami deposit and associated soils sampled at Hasunuma, Kujukuri coastal plain, Japan, in 2011 and 2014. At this site, the 2011 tsunami formed a 10–30 cm ‐thick layer of very fine to medium sand. The tsunami deposit was organic‐poor, and no samples contained any detectable biomarkers of either terrigenous or marine origin. In the underlying soil, we identified hydrocarbons and sterols derived from terrestrial plants, but detected no biomarkers of marine origin. In the samples collected in 2011, concentrations of tsunami‐derived water‐leachable ions were highest in the soil immediately beneath the tsunami deposit and then decreased gradually with depth. Because of its finer texture and higher organic content, the soil has a higher water‐holding capacity than the sandy tsunami deposit. This distribution suggests that ions derived from the tsunami quickly penetrated the sand layer and became concentrated in the underlying soil. In the samples collected in 2014, concentrations of water‐leachable ions were very low in both soil and sand. We attribute the decrease in ion concentrations to post‐tsunami rainfall, seepage, and seasonal changes in groundwater level. Although water‐leachable ions derived from seawater were concentrated in the soil beneath the tsunami deposit following the tsunami inundation, they were not retained for more than a few years. To elucidate the behavior of geochemical characteristics associated with tsunamis, further research on organic‐rich muddy deposits (muddy tsunami deposits and soils beneath sandy tsunami deposits) as well as sandy tsunami deposits is required.

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Section: Discussionmentioning

confidence: 99%

Section: Water-leachable Ionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geochemical characteristics of deposits from the 2011 Tohoku‐oki tsunami at Hasunuma, Kujukuri coastal plain, Japan

et al. 2016

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“…There have been many studies pertaining to salt-affected farmlands and rehabilitation (Agus and Tinning 2008; Nakaya et al 2010). The drainage system, including the underground one, plays an important role in desalinization by both rainwater and irrigation water.…”

Section: Desalinization and Restoration Of The Tsunami-affected Farmlandmentioning

confidence: 99%

Role of Inorganic Soil Constituents in Selected Topics

Nanzyo

Kanno

2018

Inorganic Constituents in Soil

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Three topics are introduced to exemplify the important roles of inorganic soil constituents-the effects of tsunami on soil in Japan in 2011, the dynamics of radiocesium in the soil environment, and phosphates related to a soil-plant system. With respect to tsunami inundation into paddy field soils, soil erosion by seawater flow, sedimentation of soil transported by the seawater flow, precipitation of evaporites, and sodification are discussed. Removal of the deposited sediments and soil washing by rain and irrigation water were effective for restoration of the salt-affected farmlands. Radiocesium was effectively trapped by soil, which regulated its transfer to agricultural products. Among inorganic soil constituents, weathered biotite has a high fixation capacity for radiocesium. The biotite might have been released from granitic rock and volcanic ash. Apatite is the key phosphate in both natural and farmland soils, although it is converted to more soluble forms in the fertilizer industry. Fixation of phosphate by active Al materials is so high in Andisols that the recovery of phosphate by agricultural crops is low, and phosphate accumulation in plow layer soil is continuing. Struvite plays a role in cycling phosphate in the soilplant system of farmlands.

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Evaluating the impact of the Storegga tsunami on Mesolithic communities in Northumberland

Sharrocks,

Hill

2023

J Quaternary Science

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The Holocene Storegga tsunami, 8120–8175 cal a bp, resulted in run‐up heights of up to 3–6 m around mainland UK and coincided with a suggested large population decline in the coastally focused Mesolithic population in Northern Britain. At Howick, Northumberland, the site of a Mesolithic settlement, a nearby sediment deposit may be of tsunamigenic origin, but this is uncertain. Here, a numerical model was used to simulate the Storegga tsunami in Northumberland. Two scenarios of relative sea‐level change, and a third incorporating high tide, were simulated with mortality estimated within the intertidal zone for the Mesolithic sites in the region. The results showed that only with the addition of high tide could the sediment deposit site have been inundated by the tsunami. At Howick, mortality estimates varied but were up to 100% within the resource‐rich intertidal zone. The tsunami inundated a large area and would have led to the loss of key resources such as hazelnuts prior to the winter months. These combined effects would have probably been replicated throughout coastal settlements in Northern Britain, possibly leading to the contemporary population decline estimated to have occurred at this time.

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Developing a Salt-Removal Plan to Remedy Tsunami-caused Salinity Damage to Farmlands: Case Study for an Area in Southern Thailand

Cited by 10 publications

References 2 publications

Geochemical characteristics of deposits from the 2011 Tohoku‐oki tsunami at Hasunuma, Kujukuri coastal plain, Japan

Geochemical characteristics of deposits from the 2011 Tohoku‐oki tsunami at Hasunuma, Kujukuri coastal plain, Japan

Role of Inorganic Soil Constituents in Selected Topics

Evaluating the impact of the Storegga tsunami on Mesolithic communities in Northumberland

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