博士（理学）, 信州大学大学院

Environmental dynamic analysis, methane, Radiocarbon

Space and planetary sciences, Organic geochemistry

2023 - Present
Japan Agency for Marine-Earth Science and Technology, 海洋機能利用部門 生物地球化学センター, Guest Researcher

2023
Guest Researcher, Japan Agency for Marine-Earth Science and Technology

2023 - Present
Shinshu University, Faculty of Science Department of Science Course of Environmental Science, Assistant Professor

2023
Assistant Professor, Faculty of Science Department of Science Course of Environmental Science, Shinshu University

2021 - Present
Keio University, Teacher Training Center, Part-time University Lecturer

2021 - 2023
Japan Agency for Marine-Earth Science and Technology, Biogeochemistry Research Center, Research Institute for Marine Resources Utilization,, JSPS Research Fellow

2021
Part-time University Lecturer, Teacher Training Center, Keio University

2021 - 2023
JSPS Research Fellow, Biogeochemistry Research Center, Research Institute for Marine Resources Utilization,, Japan Agency for Marine-Earth Science and Technology

2020 - 2021
Japan Agency for Marine-Earth Science and Technology, Biogeochemisry Center (BGC), Research Institute for Marine Resources Utilization (MRU), Research Assistant (Research Student)

2020 - 2021
Research Assistant (Research Student), Biogeochemisry Center (BGC), Research Institute for Marine Resources Utilization (MRU), Japan Agency for Marine-Earth Science and Technology

2019 - 2020
Japan Agency for Marine-Earth Science and Technology, Biogeochemisry Program, Research Institute for Marine Resources Utilization, Research Assistant（Research student）

2019 - 2020
Research Assistant（Research student）, Biogeochemisry Program, Research Institute for Marine Resources Utilization, Japan Agency for Marine-Earth Science and Technology

2017 - 2019
Japan Agency for Marine-Earth Science and Tecnology, Department of Biogeochemistry, Research Assistant (Research Student)

2017 - 2019
Research Assistant (Research Student), Department of Biogeochemistry, Japan Agency for Marine-Earth Science and Tecnology

2014 - 2017
株式会社エスコ, 環境生態グループ 環境調査分析部門, 計量管理責任者

2018 - 2021, Shinshu University, 総合医理工学研究科, 総合理工学専攻

2012 - 2014, Shinshu University, Graduate School of Science and Technology, 地球生物圏科学専攻

2008 - 2012, Shinshu University, Faculty of Science, Department of Environmental Sciences

2023
日本有機地球化学会, 田口賞
バイオマーカーおよび同位体比分析を用いた表層水圏および深部地下圏における炭素循環とその相互作用に関する研究
浦井暖史

2019
The geochemical society of Japan, Student Excellence Award
Atsushi Urai

2019
Japan Geoscience Union, Outstanding student presentation award
Atsushi URAI

Role of strike-slip faults on the regional groundwater flow in the complex aquifer system of Lake Suwa watershed, Japan
Koichi Sakakibara; Mizuki Hori; Yoshitake Nagahata; Yuichi Miyabara; Atsushi Urai; Keisuke Suzuki
Journal of Hydrology, 653, 132790-132790, Jun. 2025

Sub-daily variations in nitrous oxide fluxes from the littoral zone of a temperate eutrophic lake
Hiroki Iwata; Shunta Kawagishi; Kenshi Takahashi; Yuichi Miyabara; Hirohiko Nagano; Masayuki Itoh; Kazuki Suzuki; Atsushi Urai
Inland Waters, 653(132790), 1-50, Apr. 2025

Origin of Deep Methane from Active Faults along the Itoigawa–Shizuoka Tectonic Line between the Eurasian and North American Plates: 13C/12C and 14C/12C Methane Profiles from a Pull-Apart Basin at Lake Suwa
Atsushi Urai; Yoshinori Takano; Yohei Matsui; Hiroki Iwata; Yosuke Miyairi; Yusuke Yokoyama; Yuichi Miyabara; Naohiko Ohkouchi; Ho-Dong Park
ACS Earth and Space Chemistry, Jul. 2022

Detection of planktonic coenzyme factor 430 in a freshwater lake: small-scale analysis for probing archaeal methanogenesis
Atsushi Urai; Makoto Matsushita; Ho-Dong Park; Hiroyuki Imachi; Miyuki Ogawara; Hiroki Iwata; Masanori Kaneko; Nanako O. Ogawa; Naohiko Ohkouchi; Yoshinori Takano
Progress in Earth and Planetary Science, 8(1), 62, Dec. 2021

Origin of Deep Methane Associated with a Unique Community of Microorganisms in an Organic- and Iodine-Rich Aquifer
Atsushi Urai; Yoshinori Takano; Hiroyuki Imachi; Shun’ichi Ishii; Yohei Matsui; Miyuki Ogawara; Eiji Tasumi; Yosuke Miyairi; Nanako O. Ogawa; Toshihiro Yoshimura; Fumio Inagaki; Yusuke Yokoyama; Kenjiro Kawano; Daisuke Murai; Ho-Dong Park; Naohiko Ohkouchi
ACS Earth and Space Chemistry, 5(1), 1-11, Jan. 2021

Difference in the foraging strategy between daphnia and copepods in Shirakoma-ike: evidence from ¹⁵N / ¹⁴N of amino acids
Atsushi Urai
Researches in Organic Geochemistry, 35(2), 37-43, Dec. 2019

Algal-derived 24-ethylcholesta-5,22-dien-3β-ol (stigmasterol) is frequently found in high-molecular-weight dissolved organic matter (HMW-DOM) during summer in freshwater and brackish lakes
Atsushi Urai; Koji Takahashi; Yoshito Chikaraishi; Kazuo Fukushima
GEOCHEMICAL JOURNAL, 52(4), e15-e20, Jun. 2018

Detection of planktonic coenzyme factor 430 in a freshwater lake: Small-scale analysis for probing archaeal methanogenesis
Atsushi Urai; Makoto Matsushita; Ho-Dong Park; Hiroyuki Imachi; Miyuki Ogawara; Hiroki Iwata; Masanori Kaneko; Nanako O. Ogawa; Naohiko Ohkouchi; Yoshinori Takano

異なる自生性有機物の添加に対する富栄養湖堆積物中のメタン生成応答の違い
JET Yang Chun; 岩田拓記; 朴虎東; 宮原裕一; 浦井暖史; 二木功子; 伊藤雅之; 高野淑識
日本農業気象学会全国大会講演要旨(CD-ROM), 2024, 2024

異なる自生性有機物の添加に対する富栄養湖堆積物中のメタン生成応答の違い
YANG Chun Jet; 岩田拓記; 朴虎東; 宮原裕一; 伊藤雅之; 浦井暖史; 高野淑識
日本農業気象学会全国大会講演要旨(CD-ROM), 2023, 2023

LC-MS/MSによる補酵素F430の高感度分析法：環境中のメタン生成アーキアの探索
浦井 暖史
ぶんせき, 221, Jun. 2022

アオコ添加に対する富栄養湖堆積物中のメタン生成の応答
JET Yang Chun; 岩田拓記; 朴虎東; 宮原裕一; 伊藤雅之; 高野淑識; 浦井暖史
日本農業気象学会全国大会講演要旨(CD-ROM), 2022 (CD-ROM), 2022

補酵素F430を経由するメタン生成とメタン酸化の2核種炭素同位体比フィンガープリント法の展開：地球深部での炭素循環
高野淑識; 浦井暖史; 金子雅紀; 大河内直彦
Isotope news, 778, 36 - 40, Dec. 2021

Carbon cycle and interactions between surface hydrogen and deep-subsurface: key molecule and isotopic ratio approaches
Atsushi Urai
Chikyukagaku, 55(3), 87 - 88, Sep. 2021

南関東ガス田の地下水に存在する「メタン生成アーキア」、大半は生きた状態で存在していた
浦井 暖史
アカデミストジャーナル, Apr. 2021

植物プランクトン添加に対する湖底堆積物中のメタン生成の応答
YANG Chun Jet; 岩田拓記; 朴虎東; 宮原裕一; 伊藤雅之; 高野淑識; 浦井暖史
日本農業気象学会関東甲信越支部例会一般講演要旨集(Web), (17), 2021

Load to researcher
Atsushi Urai
News letter of The Japanese Association of Organic Geochemistry, 68, 8 - 11, Jul. 2018

Insights of the food web in freshwater lake using radiocarbon measurements
A. Urai; Y. Takano; Y. Matsui; N.F. Ishikawa; Y. Miyairi; Y. Yokoyama; Y. Miyabara; N. Ohkouchi
⽇本地球化学会 第70回年会, Sep. 2023

Deep biosphere at the intersection of Itoigawa-Shizuoka Tectonic Line and Median Tectonic Line.
H. Nishimura; A. Urai; Y. Matsui; Y. Miyabara; Y. Takahashi; Y. Takano
⽇本地球化学会 第70回年会, Aug. 2023

Insights of the interaction between surface and deep sub-surface hydrosphere using radiocarbon measurements ○Atsushi Urai1,2
Atsushi Urai
第40回日本有機地球化学シンポジウム（伊都大会）, Aug. 2023

異なる自生性有機物の添加に対する富栄養湖堆積物中のメタン生成応答の違い
Yang Chun Je; 岩田拓記; 朴虎東; 宮原裕一; 伊藤雅之; 浦井暖史; 高野淑識
日本農業気象学会2023年全国大会, Mar. 2023

Application of methane-specific stable carbon and radiocarbon isotope measurements (δ13C & Δ14C) for ecology and biogeochemistry
Atsushi Urai; Yoshinori Takano; Yohei Matsui; Nanako O. Ogawa; Yusuke Yokoyama; Naohiko Ohkouchi
INTERNATIONAL SYMPOSIUM ON ISOTOPE PHYSIOLOGY, ECOLOGY, AND GEOCHEMISTRY, Sep. 2022

断層湖堆積盆から湧出する深部メタンの起源と表層生態系への影響：糸魚川静岡構造線と中央構造線の交点のカーボンサイクル
浦井暖史; 高野淑識; 松井洋平; 岩田拓記; 宮入陽介; 横山祐典; 宮原裕一; 大河内直彦; 朴虎東
2022年日本地球惑星科学連合大会, May 2022,

アオコ添加に対する富栄養湖堆積物中のメタン生成の応答
Yang Chun Jet; 岩田拓記; 朴虎東; 宮原裕一; 伊藤雅之; 高野淑識; 浦井暖史
日本農業気象学会2022年全国大会, Mar. 2022

淡水湖表層水でのメタン生成プロセスの探索
浦井暖史; 松下慎; 朴虎東; 井町寛之; 小河原美幸; 岩田拓記; 金子雅紀; 小川奈々子; 大河内直彦; 高野淑識
第38回有機地球化学シンポジウム札幌大会, Nov. 2021

Ongoing archaeal methanogenesis in an organic- and iodine-rich deep aquifer: molecular evidence from coenzyme factor 430 and methane-specific radiocarbon measurements
Atsushi Urai; Yoshinori Takano; Naohiko Ohkouchi
Japan Geoscience Union Meeting 2021, Jun. 2021, Japan Geoscience Union

Deep methane emission from the active fault lake on Itoigawa-Shizuoka Tectonic Lines: Impact and interaction between deep carbon and surface ecosystems.
A. Urai; Y. Takano; Y. Matsui; H. Iwata; Y. Miyairi; Y. Yokoyama; Y. Miyabara; H. D. Park; N. Ohkouchi
Conference of the geochemical society of Japan, Nov. 2020

Biogeochemical and molecular approaches for methane cycle of surface and deep sub-surface origins on an active fault lake
Urai, A; Takano, Y; Matsushita, M; Imachi, H; Matsui, Y; Miyairi, Y; Iwata, H; Park, H. D; Yokoyama,Y; Ohkouchi, N
The geochemical society of Japan, Sep. 2019

Deep methanogenesis and iodine-rich aquifer: Insight from organic geochemical approach
Urai, A; Takano, Y; Imachi, H; Ishii, S; Matsui, Y; Ogawara, M; Miyairi, Y; Ogawa, N. O; Yoshimura, T; Inagaki, F; Yokoyama, Y; Park, H. D; Murai, D; Kawano, K; Ohkouchi, N
29th International Meeting on Organic Geochemistry (IMOG), Sep. 2019

Search for microbial CH4 production processes in lake sediments and surface water associated with cyanobacterial bloom
Matsushita, M; Takano, Y; Imachi, H; Urai, A; Park, H.D; Iwata, H; Ohkouchi, N
JpGU Meeting 2019, May 2019

Dynamisms and characteristics of dissolved organic matter (DOM) in deep aquifer: A scope for deep biosphere
Urai, A.; Takano, Y.; Ohkouchi, N
JpGU Meeting 2019, May 2019

Deep methanogenesis and iodine aquifer: an organic geochemical approach
A. Urai; Y. Takano; S. Ishii; H. Imachi; Y. Matsui; Y. Miyairi; N.O. Ogawa; T. Yoshimura; F. Inagaki; Y. Yokoyama; D. Murai; K. Kawano; N. Ohkouchi
第65回日本地球化学会年会, Sep. 2018

Characterization of Sterols in Dissolved Organic Matter
Urai, A; Takahahi, K; Chikaraishi, Y; Fukushima, K
第36回日本有機地球化学シンポジウム, Aug. 2018

農薬モニタリング評価における河川調査法の一考察
内田成人; 土屋秀平; 浦井暖史; 北條敏彦
日本農薬学会第40回大会, Mar. 2015

Chemical characterization of sterol composition dissolved in freshwater lakes in Japan.
Urai, A; Takahashi, K; Fukuhshima, K; Chikaraishi, Y
26th International Meetings on Organic Geochemistry, 206, Sep. 2013

Chemical Characterization of Dissolved Sterols in Lakes Water
Urai, ,A; Takahashi, K; Fukushima, K
第31回日本有機地球化学シンポジウム, Aug. 2013

Characteristic of Stigmasterol in Dissolved Organic Matter
Urai, ,A; Umeyama, M; Takahashi, K; Fukushima, K
第30回日本有機地球化学シンポジウム, Aug. 2012

基礎科学英語
Apr. 2025 - Present

物質循環基礎実習
Apr. 2023 - Present

物質循環実習
Apr. 2023 - Present

物質循環学序説
Apr. 2023 - Present

環境基礎理論
Apr. 2023 - Present

野外調査実習Ⅱ
Mar. 2023 - Present

Earth science experiment
Oct. 2021 - Present
Keio University

科学英語Ⅳ
Apr. 2023 - Mar. 2025

Sep. 2023 - Present
The Japanese Society of Limnology

THE GEOCHEMICAL SOCIETY OF JAPAN

THE JAPANESE ASSOCIATION OF ORGANIC GEOCHEMISTS

JAPAN GEOSCIENCE UNION

Latitudinal differences of methane emission from lakes -from tropical to temperate-
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Fund for the Promotion of Joint International Research (International Collaborative Research)
University of Hyogo
08 Sep. 2023 - 31 Mar. 2026

メタンを起点とする湖沼生態系：放射性炭素を用いた新しい評価法
科学研究費助成事業 特別研究員奨励費, 日本学術振興会, 特別研究員奨励費
国立研究開発法人海洋研究開発機構
28 Apr. 2021 - 31 Mar. 2024

Ongoing biological methanogenesis by archaea in iodine-rich deep aquifer around Mobara, southern Kanto region
JAMSTEC, 13 Jan. 2021, Internet