Search Results - "Ochiai, Shinya"

DISTRIBUTIONS OF 210PB, 137CS AND PHYSICAL PROPERTIES IN BOTTOM SEDIMENTS OF WEST NANAO BAY, JAPAN by Ochiai, Shinya, Fujita, Atsushi, Tokunari, Takeo, Sakai, Hideo, Nagao, Seiya

“…This study revealed sedimentation processes based on 137Cs and 210Pb distribution, grain size and magnetic susceptibility of bottom sediments in West Nanao…”
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Geochemical Control of PAHs by Inflowing River Water to West Nanao Bay, Japan, and Its Influences on Ecological Risk: Small-Scale Changes Observed under Near-Background Conditions at an Enclosed Bay by Mundo, Rodrigo, Matsunaka, Tetsuya, Iwai, Hisanori, Ochiai, Shinya, Nagao, Seiya

“…Polycyclic aromatic hydrocarbons (PAHs), even at low concentrations, have been shown to trigger changes in life cycles and provoke abnormal behaviors in…”
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Desorption Behavior of Fukushima-derived Radiocesium in Sand Collected from Yotsukura Beach in Fukushima Prefecture by NAGAO, Seiya, TERASAKI, Soichiro, OCHIAI, Shinya, FUKUSHI, Keisuke, TOMIHARA, Seiichi, CHARETTE, Mathew A., BUESSELER, Ken O.

“…Beach sand samples were collected along a coastal area 32 km south of the Fukushima Daiichi Nuclear Power Plant (FDNPP) in Fukushima Prefecture, Japan, 5 years…”
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A Study of Sedimentary Environments Based on Long-term Observation in a Small Lake-catchment System in Central Japan by Itono, Taeko, Kashiwaya, Kenji, Ochiai, Shinya

“…This study deals with environmental changes and lake-catchment processes in a small pond-catchment system (Takidani-ike) in central Japan to make clear…”
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Sedimentary rhythm of Mn-carbonate laminae induced by East Asian summer monsoon variability and human activity in Lake Ohnuma, southwest Hokkaido, northern Japan by Katsuta, Nagayoshi, Naito, Sayuri, Ikeda, Hisashi, Tanaka, Kuniaki, Murakami, Takuma, Ochiai, Shinya, Miyata, Yoshiki, Shimizu, Mayuko, Hayano, Asuka, Fukui, Konami, Hasegawa, Hitoshi, Nagao, Seiya, Nakagawa, Mayuko, Nagashima, Kana, Niwa, Masakazu, Murayama, Masafumi, Kagawa, Masako, Kawakami, Shin-ichi

“…Past and ongoing precipitations of Mn-carbonate (rhodochrosite) have occurred in the freshwater Lake Ohnuma, which is situated about 8 km south of the…”
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Quantitative micro‐X‐ray fluorescence scanning spectroscopy of wet sediment based on the X‐ray absorption and emission theories: Its application to freshwater lake sedimentary sequences by Katsuta, Nagayoshi, Takano, Masao, Sano, Naomi, Tani, Yukinori, Ochiai, Shinya, Naito, Sayuri, Murakami, Takuma, Niwa, Masakazu, Kawakami, Shin‐ichi

“…Micro‐X‐ray fluorescence scanning spectroscopy of marine and lake sedimentary sequences can provide detailed palaeoenvironmental records through element…”
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Hydrological and climate changes in southeast Siberia over the last 33 kyr by Katsuta, Nagayoshi, Ikeda, Hisashi, Shibata, Kenji, Saito-Kokubu, Yoko, Murakami, Takuma, Tani, Yukinori, Takano, Masao, Nakamura, Toshio, Tanaka, Atsushi, Naito, Sayuri, Ochiai, Shinya, Shichi, Koji, Kawakami, Shin-ichi, Kawai, Takayoshi

“…Paleoenvironmental and paleoclimate changes in intracontinental Siberia were reconstructed by continuous, high-resolution records (biogenic silica, U, total…”
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Organic carbon accumulation and productivity over the past 130 years in Lake Kawaguchi (central Japan) reconstructed using organic geochemical proxies by Yamamoto, Shinya, Hubert-Ferrari, Aurélia, Lamair, Laura, Miyata, Yoshiki, Ochiai, Shinya, Nagao, Seiya, Miyauchi, Nobuo, Yoshida, Kunio, Fujiwara, Osamu, Yokoyama, Yusuke, Heyvaert, Vanessa M. A., De Batist, Marc

“…Organic matter in lake sediments contains information that can be used to reconstruct lake environmental histories over decades or centuries. In this study, we…”
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Interannual changes in radiocesium concentrations in annually laminated tufa following the Fukushima Daiichi Nuclear Power Plant accident by Katsuta, Nagayoshi, Miyata, Yoshiki, Murakami, Takuma, Mino, Yoshihisa, Naito, Sayuri, Yasuda, Koji, Ochiai, Shinya, Abe, Osamu, Yasuda, Atsushi, Morimoto, Maki, Kawakami, Shin-ichi, Nagao, Seiya

“…Chemical and radiocesium concentrations in water and riverbed tufa of the Nigori River, flowing out of the southern foot of Mt. Asama volcano in central Japan,…”
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Characteristics of Lake Sediment from Southwestern Mongolia and Comparison with Meteorological Data by Udaanjargal, Uyangaa, Hasebe, Noriko, Davaasuren, Davaadorj, Fukushi, Keisuke, Tanaka, Yukiya, Gankhurel, Baasansuren, Katsuta, Nagayoshi, Ochiai, Shinya, Miyata, Yoshiki, Gerelmaa, Tuvshin

“…To understand how the climate system works in the continental interior, sediment cores that are approximately 30-cm long were taken from Olgoy, Boontsagaan,…”
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Effect of deforestation on the transport of particulate organic matter inferred from the geochemical properties of reservoir sediments in the Noto Peninsula, Japan by Ochiai, Shinya, Nagao, Seiya, Yonebayashi, Koyo, Fukuyama, Taijiro, Suzuki, Tomoyo, Yamamoto, Masayoshi, Kashiwaya, Kenji, Nakamura, Koji

“…The effects of artificial deforestation in the 1970s and the subsequent recovery process on the transport of particulate organic matter were investigated using…”
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Temporal variation of post-accident atmospheric 137 Cs in an evacuated area of Fukushima Prefecture: Size-dependent behaviors of 137 Cs-bearing particles by Ochiai, Shinya, Hasegawa, Hidenao, Kakiuchi, Hideki, Akata, Naofumi, Ueda, Shinji, Tokonami, Shinji, Hisamatsu, Shun'ichi

“…The concentrations of Cs in the air, which were divided into coarse (>1.1 μm ϕ) and fine (<1.1 μm ϕ) fractions of particulate matter (PM), were measured from…”
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Deposition records in lake sediments in western Japan of radioactive Cs from the Fukushima Dai-ichi nuclear power plant accident by Ochiai, Shinya, Nagao, Seiya, Yamamoto, Masayoshi, Itono, Taeko, Kashiwaya, Kenji, Fukui, Kotaro, Iida, Hajime

“…Sediment trap observations of lakes in western Japan before and after Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident indicate that changes in the…”
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Nuclear accident-derived 3H in river water of Fukushima Prefecture during 2011–2014 by Ueda, Shinji, Hasegawa, Hidenao, Kakiuchi, Hideki, Ochiai, Shinya, Akata, Naofumi, Hisamatsu, Shun'ichi

“…During 2011–2014, we measured 3H concentrations in river water samples collected during base flow conditions and during several flood events from two small…”
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Spatial and temporal changes of 137Cs concentrations derived from nuclear power plant accident in river waters in eastern Fukushima, Japan during 2012–2014 by Ochiai, Shinya, Ueda, Shinji, Hasegawa, Hidenao, Kakiuchi, Hideki, Akata, Naofumi, Ohtsuka, Yoshihito, Hisamatsu, Shun’ichi

“…Concentrations of 137 Cs measured in water collected from seven rivers under base-flow conditions in eastern Fukushima Prefecture in 2014 were combined with…”
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Migration behavior of 134Cs and 137Cs in the Niida River water in Fukushima Prefecture, Japan during 2011–2012 by Nagao, Seiya, Kanamori, Masaki, Ochiai, Shinya, Inoue, Mutsuo, Yamamoto, Masayoshi

“…Total radioactivity of 137 Cs in water samples from the Niida River was 0.025–4.18 Bq/L during May 2011–November 2012. Higher radioactivity was found during…”
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Effects of radiocesium inventory on 137Cs concentrations in river waters of Fukushima, Japan, under base-flow conditions by Ochiai, Shinya, Ueda, Shinji, Hasegawa, Hidenao, Kakiuchi, Hideki, Akata, Naofumi, Ohtsuka, Yoshihito, Hisamatsu, Shun'ichi

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Orbit-related long-term climate cycles revealed in a 12-Myr continental record from Lake Baikal by Sakai, Hideo, Kashiwaya, Kenji, Ochiai, Shinya, Kawai, Takayoshi

“…Quaternary records of climate change from terrestrial sources, such as lake sediments and aeolian sediments, in general agree well with marine records. But…”
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Climato-hydrological environment inferred from Lake Baikal sediments based on an automatic orbitally tuned age model by Ochiai, Shinya, Kashiwaya, Kenji

“…We propose a new automatic orbital tuning algorithm to adjust climatic signals to insolation. This can tune two signals with periodicity only without shape…”
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Environmental processes and fate of PAHs at a shallow and enclosed bay: West Nanao Bay, Noto Peninsula, Japan by Mundo, Rodrigo, Matsunaka, Tetsuya, Iwai, Hisanori, Ochiai, Shinya, Nagao, Seiya

“…From August 2019 to August 2020, particulate and dissolved polycyclic aromatic hydrocarbons concentrations (PAHs) were analyzed in the water body of West Nanao…”
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