Ryuichi NISHIYAMA

Profile Information

Affiliation: Earthquake Research Institute, The University of Tokyo

Researcher number: 10835101
J-GLOBAL ID: 201801011312269503
researchmap Member ID: B000307701

Research Areas

Natural sciences / Solid earth science /

Papers

Postseismic gravity changes after the 2011 Tohoku earthquake observed by superconducting gravimeters at Mizusawa, Japan

Yoshiaki Tamura, Takahito Kazama, Ryuichi Nishiyama, Koji Matsuo, Yuichi Imanishi

Earth, Planets and Space, 75(1), Dec, 2023 Peer-reviewed
絶対重力計を用いた重力鉛直勾配の測定

今西祐一, 西山竜一, 本多亮

日本測地学会誌, 69 8-17, Nov, 2023 Peer-reviewed
Cooperative Gravity Measurements in Izu-Oshima for Revealing Subsurface Volcanic Processes and Application to Evaluation of Volcanic Activities

Bulletin of Earthquake Research Institute, the University of Tokyo, 97 13-32, Mar, 2023 Peer-reviewed
Absolute Gravity Measurements in Mt. Fuji with two FG5 Gravimeters in September 2022 : Establishment of Calibration Line for Relative Gravimeters and Calibration of Instrumental Offsets of FG5 Gravimeters

Imanishi, Y, Nishiyama, R, Honda, R

Bulletin of Earthquake Research Institute, the University of Tokyo, 97 1-11, Mar, 2023 Peer-reviewed
Rapid Gravity Survey Using a Very Small GNSS Receiver: Trial to Produce a Gravity Anomaly Map of Hongo Cam

Ryuichi NISHIYAMA, Yanxue MA, Towako AOYAMA, Taiga SEITO, Haruka NAGAI

https://www.eri.u-tokyo.ac.jp/GIHOU/archive/28_006-009.pdf, 28 6-9, Feb, 2023 Peer-reviewedLead author
Calibration of Reading Value Dependence of Scale Factors for LaCoste and Scintrex Relative Gravimeters

Journal of the Geodetic Society of Japan, 68 49-68, Feb, 2023 Peer-reviewed
Deformation of an infinite elastic cone due to a point pressure source buried on the axis: implications to volcanic deformation

Ryuichi Nishiyama

Geophysical Journal International, 232(2) 1129-1139, Feb 1, 2023 Peer-reviewedLead author
Muography and Geology: Alpine Glaciers

Ryuichi Nishiyama

Cosmic Ray Muography, 215-232, Jan 1, 2023 Peer-reviewedLead author
A machine learning approach to joint gravity and cosmic-ray muon inversion at Mt Usu, Japan

Katherine Cosburn, Mousumi Roy, Ryuichi Nishiyama

Geophysical Journal International, 233(2) 1081-1096, Dec 20, 2022 Peer-reviewed
「Isis特集「人新世における科学史」Isis 113 (2022) 」

横井謙斗, 柳下壱靖, 猪鼻真裕, 西山竜一, 左高豊武, 鶴田想人

化学史研究, 49(4) 196-199, Dec, 2022
Radiography using cosmic-ray electromagnetic showers and its application in hydrology

A. Taketa, R. Nishiyama, K. Yamamoto, M. Iguchi

Scientific Reports, 12(1), Dec, 2022 Peer-reviewedCorresponding author
SMAUG v1.0 - A user-friendly muon simulator for the imaging of geological objects in 3-D

Alessandro Lechmann, David Mair, Akitaka Ariga, Tomoko Ariga, Antonio Ereditato, Ryuichi Nishiyama, Ciro Pistillo, Paola Scampoli, Mykhailo Vladymyrov, Fritz Schlunegger

Geoscientific Model Development, 15(6) 2441-2473, Mar 22, 2022 Peer-reviewed
Joint Inversion of Muography and Gravity Data for 3D Density Imaging of Volcanoes

Ryuichi Nishiyama

Muography, 33-42, Jan 7, 2022 Lead author
Exploration of Hidden Topography Beneath Alpine Glaciers with Muography

Paola Scampoli, Ryuichi Nishiyama, Akitaka Ariga, Tomoko Ariga, Antonio Ereditato, Alessandro Lechmann, David Mair, Ciro Pistillo, Fritz Schlunegger, Mykhailo Vladymyrov

Muography, 175-184, Jan 7, 2022 Peer-reviewed
Muon tomography in geoscientific research – A guide to best practice

Alessandro Lechmann, David Mair, Akitaka Ariga, Tomoko Ariga, Antonio Ereditato, Ryuichi Nishiyama, Ciro Pistillo, Paola Scampoli, Fritz Schlunegger, Mykhailo Vladymyrov

Earth-Science Reviews, 222, Nov, 2021 Peer-reviewed
Estimation of the Bulk Density of the Omuro Scoria Cone (Eastern Izu, Japan) from Gravity Survey

Nishiyama, R, Miyamoto, S, Nagahara, S

Bulletin of the Earthquake Research Institute, University of Tokyo, 95(1-4) 1-7, Mar, 2021 Peer-reviewedLead author
Calibration of Instrumental Offsets of Absolute Gravimeters FG5 #109 and #241 by Intercomparison at Tokyo and Mount Fuji

Yuichi Imanishi, Ryuichi Nishiyama, Ryo Honda, Yoshiaki Tamura

Journal of the Geodetic Society of Japan, 67 18-28, 2021 Peer-reviewed
Absolute Gravity Measurements at Teshikaga in 2019 and 2020

95(1-4) 9-13, 2020 Peer-reviewed
Bedrock sculpting under an active alpine glacier revealed from cosmic-ray muon radiography

R. Nishiyama, A. Ariga, T. Ariga, A. Lechmann, D. Mair, C. Pistillo, P. Scampoli, P. G. Valla, M. Vladymyrov, A. Ereditato …

Scientific Reports, 9(1), Dec 1, 2019 Peer-reviewedLead author
First muography of Stromboli volcano

Valeri Tioukov, Andrey Alexandrov, Cristiano Bozza, Lucia Consiglio, Nicola D’Ambrosio, Giovanni De Lellis, Chiara De Sio, Flora Giudicepietro, Giovanni Macedonio, Seigo Miyamoto …

Scientific Reports, 9(1), Dec 1, 2019 Peer-reviewed

Misc.

Supplementary source code for "Detectability of gravity change on the sea surface due to magma accumulation beneath submarine volcanoes"

Sep, 2023
Supplementary source codes for "Deformation of an infinite elastic cone due to a point source buried on the axis: Implications to volcanic deformation"

Ryuichi Nishiyama

Apr, 2022
原子核乾板を用いたミューオンラジオグラフィー : 火山観測技術の進展—Progress of Muon Radiography for Volcanoes with Nuclear Emulsion—特集飛跡を追う

宮本成悟, 西山竜一, 長原翔伍

日本写真学会誌 = Journal of the Society of Photography and Imaging of Japan, 85(1) 80-86, Feb, 2022
Muon Radiography with Nuclear Emulsion Films for Alpine Glaciers

Nishiyama Ryuichi, Ariga Tomoko, Ariga Akitaka

Journal of The Society of Photographic Science and Technology of Japan, 81(3) 263-268, 2018
Cosmic muon radiography for imaging ice bedrock interface of alpine glaciers

Ariga Tomoko, Ariga Akitaka, Nishiyama Ryuichi, the Eiger-mu GT collaboration

Meeting Abstracts of the Physical Society of Japan, 72.2 394-394, 2017
Muographic investigation of the conduit shape in the shallow part of Stromboli, Italy

Miyamoto S., Nishiyama R., Tioukov V., Bozza C., Sirignano C., D'Ambrosio N.

PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN, 2016 16-16, 2016
P14 A vent structure inside Showa-Shinzan lava dome revealed by 3D density profile analysis

Nishiyama R, Tanaka H. K. M, Tanaka Y, Okubo S, Oshima H, Maekawa T

Programme and abstracts the Volcanological Society of Japan, 2012 113-113, Oct 14, 2012
宇宙線ミューオンラジオグラフィーと重力観測を組み合わせて見る昭和新山溶岩ドームの内部密度構造

NISHIYAMA RYUICHI, TANAKA HIROYUKI, TANAKA YOSHIYUKI, OKUBO SHUHEI, OSHIMA HIROMITSU, MAEKAWA TOKUMITSU

日本測地学会講演会要旨, 116th 19-20, Oct, 2011

Presentations

伊豆大島火山における合同精密重力観測

鬼澤真也, 西山竜一, 今西祐一, 大久保修平, 安藤忍

日本火山学会2023年度秋季大会, Oct, 2023
点圧力源による円錐地形の変形と重力変化

西山竜一

JPGU2023, May 22, 2023
日本縦断測線を用いたバネ式相対重力計のスケールファクター検定

若林環, 風間卓仁, 大島弘光, 岡田和見, 今西祐一, 西山竜一, 長縄和洋, 大柳諒, 大倉敬宏, 吉川慎

JPGU2023, May, 2023
富士山の重力観測網の構築とその活用

本多亮, 今西祐一, 西山竜一, 名和一成, 風間卓仁

JPGU2023, May, 2023
ラコスト型相対重力計の分解

風間卓仁, 吉川慎, 岡田和見, 若林環, 西山竜一, 大柳諒, 今西祐一

JPGU2023, May, 2023
国立天文台水沢VLBI観測所の超伝導重力計で観測された2011年東北地方太平洋沖地震発生後の重力変化（その２）

今西祐一, 田村良明, 風間卓仁, 西山竜一, 松尾功二

JPGU2023, May, 2023
超伝導重力計CT #036の石垣島から松代への移設について

今西祐一, 池田博, 田村良明, 名和一成, 西山竜一, 本多亮

日本測地学会第138回講演会, Oct, 2022
点圧力源による無限円錐地形の変形

西山竜一

日本測地学会第138回講演会, Oct, 2022
国立天文台水沢の超伝導重力計で観測された2011年東北地方太平洋沖地震発生後の重力変化

田村良明, 今西祐一, 西山竜一, 風間卓仁, 松尾功二

JPGU2022, May, 2022

Research Projects

２台の超伝導重力計を用いた重力水平勾配観測による地震即時重力変化の検出

科学研究費助成事業挑戦的研究(萌芽), 挑戦的研究(萌芽), 日本学術振興会, Jul, 2021 - Mar, 2024

今西祐一, 西山竜一
Soil water measurements with cosmic-ray showers for better correction of gravity data at active volcanoes

Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists, Grant-in-Aid for Early-Career Scientists, Japan Society for the Promotion of Science, Apr, 2019 - Mar, 2022
重力／歪・傾斜の連続観測と宇宙線透視の連携で拓く、火山体内部診断学

科学研究費助成事業基盤研究(B), 基盤研究(B), 日本学術振興会, Apr, 2018 - Mar, 2021

大久保修平, 西山竜一, 田中宏幸, 山本圭吾, 井口正人
火山透視技術の高度化ー宇宙線・重力観測の連携による３次元イメージング

科学研究費助成事業特別研究員奨励費, 特別研究員奨励費, 日本学術振興会, Apr, 2013 - Mar, 2015

西山竜一

Profile Information

Research Areas

Papers

Misc.

Presentations

Research Projects

Menu

Coauthors