Climatic changes during the past 1300 years as deduced from the sediments of Lake Nakatsuna, central Japan

To elucidate the historical changes in polychlorinated dibenzo-p-dioxin (PCDD), polychlorinated dibenzofuran (PCDF), coplanar polychlorinated biphenyl (co-PCB), and polycyclic aromatic hydrocarbon (PAH) inflows in Lake Suwa, their concentrations in the sediment core were analyzed in 5 cm interval. The maximum concentrations (depth cm) of PCDDs/DFs, co-PCBs, and PAHs were 25.2 ng/g dry (30-35 cm), 19.0 ng/g dry (30-35 cm), and 738, 795 ng/g dry (50-55 cm, 30-35 cm), respectively. Age and sedimentation rate of the sediment were estimated from the vertical changes in apparent density. Deposition rate of dioxins and PAHs were calculated from the concentration and sedimentation rate of the sediment. The results indicate that large amounts of dioxins and PAHs flowed into the lake in flood stage compared to normal stage. CapsuleLarge amounts of dioxins and PAHs flowed into a lake in flood events

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“…Apparent density can reflect sensitively grain size and/or compactness of grain packing (Adhikari and Kumon, 2001;Kumon et al, 2004).…”

Section: Apparent Densitymentioning

confidence: 99%

Estimation of sources and inflow of dioxins and polycyclic aromatic hydrocarbons from the sediment core of Lake Suwa, Japan

Ikenaka

Eun

Watanabe

et al. 2005

Environmental Pollution

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“…(2004) in other records in Spain. This period is consistently fOWld in the sedimentary record and it is characterised by a higher variability in climatic conditions (Adhikari and Kumon 2001;Barber et a1. 2003;Lamb et a1.…”

Section: Roosmentioning

confidence: 99%

Late holocene environments in Las Tablas de Daimiel (south central Iberian peninsula, Spain)

García

Zapata

Santisteban

et al. 2006

Veget Hist Archaeobot

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“…6H), identified in Japan, that corresponded to the Medieval Warm Period (Adhikari and Kumon, 2001), was characterized by warm winters, relatively hot summers, and decreased precipitation (Sakaguchi, 1983). This warm period was not found in our investigation and was not pronounced on the Bering and Kuril Islands (Fig.…”

Section: To 160 Cal Years Bpmentioning

confidence: 99%

Late Holocene climate and environmental changes in Kamchatka inferred from the subfossil chironomid record

Nazarova

Hoog

Hoff

et al. 2013

Quaternary Science Reviews

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Climatic changes during the past 1300 years as deduced from the sediments of Lake Nakatsuna, central Japan

Cited by 33 publications

References 10 publications

Estimation of sources and inflow of dioxins and polycyclic aromatic hydrocarbons from the sediment core of Lake Suwa, Japan

Estimation of sources and inflow of dioxins and polycyclic aromatic hydrocarbons from the sediment core of Lake Suwa, Japan

Late holocene environments in Las Tablas de Daimiel (south central Iberian peninsula, Spain)

Late Holocene climate and environmental changes in Kamchatka inferred from the subfossil chironomid record

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