Estimation of water seepage rate in the active crater lake system of Kusatsu-Shirane volcano, Japan, using FDNPP-derived radioactive cesium as a hydrological tracer

Hirayama, Yuko; Okawa, Aya; Nakamachi, Ko; Aoyama, Tatsuya; Okada, Yukiko; Oi, Takao; Hirose, Katsumi; Kikawada, Yoshikazu

doi:10.1016/j.jenvrad.2020.106257

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…Therefore, it is surprising, that while according to the Science Citation Index [72] thousands of studies have been published on the water and nutrient balances of lakes, a relatively small number of studies (<50) have examined the water balance of lakes in the highlands. An even smaller number of studies investigated the significance of inflow and outflow through faults in the world [33,[68][69][70][71].…”

Section: Discussionmentioning

confidence: 99%

“…Pipes have been found in the uplands in the periodically saturated vertisols as well and have been considered as one of the causes of gully formation [67]. Other studies that have reported groundwater in or outflow of lakes through faults were in Ethiopia (Lake Hayq and Ardibo [68], Lake Beseka [69]) in Japan (the crater lake system of Kusatsu-Shirane volcano [70]) and finally the Caspian Sea [71].…”

Section: Unaccounted Losses Of Lake Watermentioning

confidence: 99%

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Water Balance for a Tropical Lake in the Volcanic Highlands: Lake Tana, Ethiopia

Alemu

Worqlul²,

Zimale

et al. 2020

Water

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Lakes hold most of the freshwater resources in the world. Safeguarding these in a changing environment is a major challenge. The 3000 km2 Lake Tana in the headwaters of the Blue Nile in Ethiopia is one of these lakes. It is situated in a zone destined for rapid development including hydropower and irrigation. Future lake management requires detailed knowledge of the water balance of Lake Tana. Since previous water balances varied greatly this paper takes a fresh look by calculating the inflow and losses of the lake. To improve the accuracy of the amount of precipitation falling on the lake, two new rainfall stations were installed in 2013. The Climate Hazards Group Infrared Precipitation Version two (CHIRPS-v2) dataset was used to extend the data. After reviewing all the previous studies and together with our measurements, it was found that the period of 1990–1995 likely had the most accurate gauged discharge data. During some months in this period, the lake water balance was negative. Since the river inflow to the lake cannot be negative, water was either lost from the lake via the subsurface through faults, or the outflow measurements were systematically underestimated. Based on the evaporation rate of 1650 mm, we found that unaccounted loss was 0.6 km3 a−1, equivalent to 20 cm of water over the lake area each year. This implies the need for reliable rainfall data and improved river discharge measurements over a greater portion of the basin both entering and exiting the lake. Also, integrated hydrological and geologic investigations are needed for a better understanding of the unaccounted water losses and quantifying the amount of subsurface flow leaving the lake.

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Section: Discussionmentioning

confidence: 99%

Section: Unaccounted Losses Of Lake Watermentioning

confidence: 99%

Water Balance for a Tropical Lake in the Volcanic Highlands: Lake Tana, Ethiopia

Alemu

Worqlul²,

Zimale

et al. 2020

Water

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“…134 Cs has a short half-life of about 2.06 years, and the ratio of 134 Cs / 137 Cs is close to 1, so 137 Cs has become the main detection target. Hirayama et al [ 111 ] described a first attempt to estimate the water seepage rate of an active crater lake using radioactive cesium dispersed into the environment by the Fukushima Dai-ichi Nuclear Power Plant accident in March 2011 as a hydrological tracer and successfully estimated the water leakage rate of the Yugama crater lake in Kusatsu Bairen volcano. The findings suggest that radioactive cesium is one of the powerful tracers for addressing the geochemical processes of the Crater Lake System.…”

Section: Tracer Application Of 137 Csmentioning

confidence: 99%

Determination, Separation and Application of 137Cs: A Review

Cao

Zhou

Ren

et al. 2022

IJERPH

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In the context of the rapid development of the world’s nuclear power industry, it is necessary to establish background data on radionuclides of different samples from different regions, and the premise of obtaining such basic data is to have a series of good sample processing and detection methods. The radiochemical analysis methods of low-level radionuclides 137Cs (Cesium) in environmental and biological samples are introduced and reviewed in detail. The latest research progress is reviewed from the five aspects of sample pretreatment, determination, separation, calculation, application of radioactive cesium and the future is proposed.

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Natural and artificial gamma-emitting radionuclides in volcanic soils of the Western Canary Islands

López‐Pérez

Martín-Luis

Hernández

et al. 2021

Journal of Geochemical Exploration

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Estimation of water seepage rate in the active crater lake system of Kusatsu-Shirane volcano, Japan, using FDNPP-derived radioactive cesium as a hydrological tracer

Cited by 8 publications

References 29 publications

Water Balance for a Tropical Lake in the Volcanic Highlands: Lake Tana, Ethiopia

Water Balance for a Tropical Lake in the Volcanic Highlands: Lake Tana, Ethiopia

Determination, Separation and Application of 137Cs: A Review

Natural and artificial gamma-emitting radionuclides in volcanic soils of the Western Canary Islands

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