Presentations -

Changes in Subduction Conditions Revealed by Nd-Hf Isotope Compositions: Cretaceous Volcanic Rocks from Sakhalin and Middle Miocene Volcanic Rocks from the Shimokita Peninsula

Masataka Aizawa, Satoshi Okamura, Ryuichi SHINJO

36th MSSJ Hokkaido-area Colloquium  2024.08  -  2024.08 

電磁流量計を使用した琉球石灰岩帯水層からの非常に速く局所的な海底地下水湧出の直接測定法の開発

安元純, 安元剛, 浅井和見, Leong Chris, 飯島真理子, 細野高啓, 新城竜一, 宋科翰, 中屋眞司, 井口亮, Bam Razafindrabe, 谷口真人

JpGU 2024  2024.05  -  2024.05 

電気抵抗トモグラフィーと数値解析を統合した黒島における淡水レンズの賦存形態と地下水流動特性の把握

南隆正, 安元純, 安元剛・Leong Chris, 飯島真理子, 細野高啓, 新城竜一, SONG KE-HAN, 谷口真人, 高橋昌弘, 三浦豪, 澤野陽介, 田原康博

JpGU 2024  2024.05  -  2024.05 

Assessing the Influence of NO3-N in the Seawater on the Composition of Benthic Communities: Utilizing Remote Sensing Techniques

Pingkan Mayestika Afgatiani, Ryuichi Shinjo, Fitra Annurhutami

JpGU 2024  2024.05  -  2024.05 

Chemical and Isotopic Characteristics of Pore Water in Surface Sediments of the Southern Okinawa Trough Back-arc Basin

JpGU 2024  2024.05  -  2024.05 

Boron isotope geochemistry as a tracer to evaluate groundwater contamination in the Quaternary Ryukyu Limestone aquifer in the southern region of Okinawa Island, SW Japan

宋科翰, 新城竜一, 伊藤湧人, 諸見里由美, 安元純

JpGU 2024  2024.05  -  2024.05 

Annual Variations of Sediment-Accumulated Phosphorus and Its Relationship with Coral Distribution in Sekisei Lagoon

2024.02  -  2024.02 

Analysis of Microbial Communities and Functional Genes in the Groundwater Freshwater Lens on Kuroshima Island, Located in Sekisei Lagoon

2024.02  -  2024.02 

Elucidation of Microbial Communities and Dynamics of Nitrogen Metabolism Genes in Groundwater from the Southern Region of Okinawa Island Using 16S rRNA Analysis and Shotgun Metagenomic Analysis

2024.02  -  2024.02 

Origin of B- and P-rich thermal waters in northeastern Japan: Modern analogue of nucleotide-forming environments on the early Earth

Kakegawa, T, Christensen, S, Ishida, A, Araoka, D, Shinjo, R

Goldschmidt conference  2023.07  -  2023.07 

Boron isotope as a tracer for groundwater contamination in Quaternary limestone aquifer in the southern part of Okinawa Island, Japan

SONG KE-HAN, 新城 竜一, 伊藤 湧人, 諸見里 結美, 安元 純

日本地球惑星科学連合2023年大会  2023.05  -  2023.05 

琉球石灰岩帯水層における微生物叢の解析と窒素代謝および硫黄代謝関連遺伝子の解析

丸山 莉織, 水澤 奈々美, 安元 剛, 高田 遼吾, 安元 純, 廣瀬 美奈, 飯島 真理子, 井口 亮, Okutanius Hermawan, 細野 高啓, KE-HAN SONG, 新城 竜一, 渡部 終五

日本地球惑星科学連合2023年大会  2023.05  -  2023.05 

琉球石灰岩地域における地下水の脱窒関連遺伝子nirSの変動特性

安元 純, 町田 璃美乃, 廣瀬 美奈, 金城 尚, 安元 剛, 丸山 莉織, 水澤 奈々美, 細野 高啓, Bam Razafindrabe, 新城 竜一

日本地球惑星科学連合2023年大会  2023.05  -  2023.05 

亜熱帯島嶼の持続可能な水資源利用に向けた参画・合意に基づく流域ガバナンスの構築

安元 純, 新城 竜一, 金城 和俊, 高橋 そよ, ラザフィンラベ バム, 渡久地 朝央, 安元 悠子, 久保 慶明

日本地球惑星科学連合2023年大会  2023.05  -  2023.05 

Taking a look at hydrological research in the Oceania region

Chris Leong, Daiki Tomojiri, Ryuichi Shinjo, Jun Yasumoto, Bam Razafindrabe

日本地球惑星科学連合2023年大会  2023.05  -  2023.05 

Origin and behavior of nitrate nitrogen in the freshwater lens deduced by multiple stable isotope ratios in Tarama Island, Okinawa, Japan

池原 尚朋, 細野 高啓, ヘルマワン リチャード, 安元 純, 安元 剛, 丸山 莉織, 飯島 真理子, 宋 科翰, 新城 竜一

日本地球惑星科学連合2023年大会  2023.05  -  2023.05 

Estimation of Groundwater Residence Time in Ryukyu limestone aquifer

松岡 走, 安元 純, 中屋 眞司, 森松 光梨, 金城 尚, Razafindrabe Bam, 櫛渕 みちる, 田原 康博, 新城 竜一

日本地球惑星科学連合2023年大会  2023.05  -  2023.05 

Transdisciplinary project for multi-resource adaptive governance around water cycle in coral reef island systems: the LINKAGE project of the RIHN

Tomojiri Daiki, Shinjo Ryuichi, Leong Chris, Uchiyama Chrismas, Yasumoto Jun, Razafindrabe Bam H., Takahashi Soyo, Kubo Yoshiaki

Proceeding of Annual Conference  2023  -  2023 

CiNii Research

Adaptive Governance of Multiple Resources based on Land-sea Linkages of the Water Cycle at Coral Reef Islands: A Case Study of the Ryukyu Islands (Japan), Wakatobi (Indonesia), and Palau Islands

Shinjo, R, Yasumoto, J, Takahashi, S, Kubo, Y, Razafindrabe, B.H.N

AGU Fall Meeting 2022  2022.12  -  2022.12 

Application of three-dimensional water cycle modeling in Okinawa Island, southern Japan

Razafindrabe, B.H.N, Yasumoto, J, Tawara, Y, Murai, M, Kushibuchi, M, Tsujimoto, T, Nozaki, S, Yasumoto, K, Takada, R, Nakaya, S, Shinjo, R

AGU Fall Meeting 2022  2022.12  -  2022.12 

Determination of the threshold of total phosphate daily loads as revealed by integrated hydrological modelling for protect coral reefs ecosystem in Okinawa, Japan

Yasumoto, J, Yasumoto, K, Iijima, M, Nakamura, T, Sakai, K, Iguchi, A, Hirose Yasumoto, M, Tawara, Y, Takada, R, Nakaya, N, Razafindrabe, B.H.N, Shinjo, R

AGU Fall Meeting 2022  2022.12  -  2022.12 

Pollution sources of groundwater contamination diagnosed by boron isotope composition in Okinawa, Yoron, and Tarama Islands, southern Japan

Song, K.H, Ito, Y, Moromizato, Y, Shinjo, R, Takada, R, Yasumoto, J

AGU Fall Meeting 2022  2022.12  -  2022.12 

Microbial communities and functional genes involved in the nitrogen cycling of groundwater in the Ryukyu Limestone area as revealed by shotgun metagenomics

Maruyama, R, Yasumoto, K, Yasumoto, J, Hirose Yasumoto, M, Iijima, M, Iguchi, A, Mizusawa, M, Watabe, S

AGU Fall Meeting 2022  2022.12  -  2022.12 

Groundwater resources and supply issues - a case study in Japan

Ryuichi Shinjo

GetIn-CICERO international conference  2022.07  -  2022.07 

Climate change and its impact on small islands: Geology and Hydrology of Ryukyu Island Arc, southernmost Japan

Ryuichi Shinjo

Public lecture, Halu Oleo University, Indonesia  2022.07  -  2022.07 

First-principles calculations of the Hf-W partitioning between molten iron and silicate melt and its implications for 182W isotopes in Ethiopian basalts

Suzuki, K, Takamasa, A, Tsuchiya, T, Fukami, Y, Orihashi, Y, Shinjo, R

AGU Fall Meeting  2021.12  -  2021.12 

Boron isotope fingerprints offering a tool for nitrate source identification in groundwater pollution at the southern part of Okinawa Island and Yoron Island, Ryukyu islands, Japan

Song, K, Ito, Y, Moromizato, Y, Shinjo, R, Yasumoto, J, Takada, R

AGU Fall Meeting  2021.12  -  2021.12 

Adaptive Governance of Multiple Resources based on Land-sea Linkages of the Water Cycle: Application to Coral Reef Island Systems

Shinjo, R

The 8th East Asian Island and Ocean Forum 2021  2021.12  -  2021.12 

Cause of elevated sulfate concentrations in limestone aquifers in southern Okinawa Island, Japan

Hermawan, O.R, Hosono, T, Yasumoto, J, Shinjo, R, Mizota, C, Yamanaka, T

日本地下水学会2021年秋季講演会  2021.12  -  2021.12 

Boron isotopic characterization for groundwater pollution at the southern part of Okinawa Island and Yoron Island, Ryukyu Islands, Japan

Song, K.-H, Moromizato, Y, Ito, Y, Shinjo, R, Yasumoto, J, Takada, R

日本地下水学会2021年秋季講演会  2021.12  -  2021.12 

Hf and W fractionation between liquid metal and liquid silicate and resultant core-mantle interaction signature on the 182W isotope of the Ethiopian basalts

Katsuhiko Suzuki, Asako Takamasa, Taku Tsuchiya, Yusuke Fukami, Yuji Orihashi, Ryuichi Shinjo

Goldschmidt 2021  2021.07  -  2021.07 

Hf and W partitioning between liquid metal and liquid silicate and resultant core-mantle interaction signature on the 182W isotope of the Afar plume

Suzuki, K, Tsuchiya, T, Takamasa, A, Fukami, Y, Shinjo, R, Orihashi, Y

日本地球惑星科学連合2021年大会  2021.05  -  2021.06 

Quantitative evaluation of groundwater pollution at Ryukyu limestone area in southern Okinawa Island: Trial application of boron isotope

Song, K-H, Moromizato, Y, Shinjo, R, Yasumoto, J, Sawada, K

日本地球惑星科学連合2021年大会 JpGU-AGU joint session  2021.05  -  2021.06 

Nitrate contamination source identification by using multiple isotope ratios in Ryukyu limestone aquifer, southern Okinawa island, Japan

Hermawan, O. R, Hosono, T, Yasumoto, J, Sawada, K, Song Ke-Han, Shinjo, R

日本地球惑星科学連合2021年大会 JpGU-AGU joint session  2021.05  -  2021.06 

High-resolution minor element concentration records in modern brachiopod Pictothyris picta shells and their controlling factors

Oikawa, K, Takayanagi, H, Shinjo, R, Endo, K, Yoshida, M, Iryu, Y

日本地球惑星科学連合2021年大会  2021.05  -  2021.06 

A geoarchaeological approach for estimating last glacial temperatures using coupled isotopic analyses of fossil snails and stalagmites from limestone caves in Okinawa, Japan

Asami, R, Hondo, R, Uemura, R, Fujita, M, Yamasaki, S, Shen, C.C, Wu, C.C, Jiang, X, Takayanagi, H, Shinjo, R, Kano, A, Iryu, Y

日本地球惑星科学連合2022年大会  1900.01  -  1900.01 

Estimation of the terrestrial phosphate loading by integrated hydrological modelling for evaluation of phosphorus accumulated in calcareous sediments

Yasumoto, J, Yasumoto, K, Iijima, M, Takada, R, Iguchi, A, Nakamura, T, Sakai, K, Watabe, S, Shinjo, R, Tawara, Y, Yasumoto Hirose, M, Razafindrabe, B.H.N

日本地球惑星科学連合2022年大会  1900.01  -  1900.01 

Long-term variation of the Western Pacific Warm Pool since the 18th century reconstructed from modern coral geochemistry

Japan Geoscience Union Meeting 2022  1900.01  -  1900.01 

Ancient magmatic brine origin of boron-rich fluids in northwestern Iwate prefecture in Japan

Christensen, S.R, Ishida, A, Shinjo, R, Kakegawa, T

Japan Geoscience Union Meeting 2022  1900.01  -  1900.01 

Subseafloor mixing between the hydrothermal fluid and seawater at the Ieyama Hydrothermal Field, Mid-Okinawa Trough, based on mineralogy and geochemistry of clay minerals and sulfate minerals

Itatani, Y, Ishibashi, J, Shinjo, R, Yamanaka, T, Okazaki, Y, Onoue, T

Japan Geoscience Union Meeting 2022  1900.01  -  1900.01 

Pollution sources of groundwater contamination diagnosed by boron isotope composition in Okinawa, Yoron, and Tarama Islands, southern Japan

Song, K.H, Ito, Y, Moromizato, Y, Shinjo, R, Takada, R, Yasumoto, J

日本地球惑星科学連合2022年大会  1900.01  -  1900.01 

LINKAGE project: adaptive governance of multiple resources based on land-sea linkages of the water cycle at coral reef islands

Shinjo, R, Yasumoto, J, Takahashi, S, Kubo, Y, Razafindrabe, B.H.N

日本地球惑星科学連合2022年大会  1900.01  -  1900.01 

Identification of the occurrence of denitrification in the Ryukyu limestone aquifer in southern Okinawa

Hermawan, O.R, Hosono, T, Yasumoto, J, Song, K.H, Shinjo, R

日本地球惑星科学連合2022年大会  1900.01  -  1900.01 

Geoarchaeological approach for reconstructing last glacial temperatures using coupled isotopic analyses of fossil snails and stalagmites from limestone caves in Okinawa, Japan

Asami, R, Hondo, R, Uemura, R, Fujita, M, Yamasaki, S, Shen, C.C, Wu, C.C, Jiang, X, Takayanagi, H, Shinjo, R, Kano, A, Iryu, Y

EGU General Assembly 2022  1900.01  -  1900.01