Introduction of Geographic Information Analysis Research Div.
Contents of the Geographic Information Analysis Research Div.
Topics
Here is a list of lectures in English. The older ones are listed in [Past topics].
- Presented at the 2025 session of the United Nations Group of Experts on Geographical Names（28 April to 2 May @UN, NY)
- Akira SASAGAWA：Introduction to Standardization of Kanji in relation to the Notation of Geographical Names.
- Presented at the IAG Webinar East & Southeast Asia 2025（7 March＠Online）(Invited)
- Junko IWAHASHI：Statistical analysis of depth to bedrock and terrain attributes using DEMs in Japan.
- Presented at the 14th Joint Meeting of the UJNR Panel on Earthquake Research（25-27 September 2024@Odawara, Japan).
- Akira SASAGAWA：Trial of automatic change detection method using Haar Wavelet among two Sentinel-2 images for the 2024 Noto Peninsula earthquake.
- Ryo ENDO, Junko IWAHASHI and Kazuki YOSHIDA: Seismic Ground Disaster Assessment System (SGDAS) and its estimation results for the 2024 Noto Earthquake.
- Presented at the 8th International Conference on Earthquake Geotechnical Engineering（7-10 May 2024@Osaka, Japan).
- Junko IWAHASHI, Ryo ENDO, Takayuki NAKANO：Seismic Ground Disaster Assessment System (SGDAS) of GSI and its scope.
- 2nd International Conference on Construction Resources for Environmentally Sustainable Technologies (20-22 November 2023@Fukuoka, Japan).
- Ryo ENDO, Junko IWAHSHI: Estimation of effect of antecedent rainfall on coseismic landslides
- 2023 session of the United Nations Group of Experts on Geographical Names (1-5 May 2023@United Nations in NY).
- Akira Sasagawa：Standardization of Geographical Names in Japan．
- Akira Sasagawa：International Symposium on the Standardization of Geographical Names - Introducing the Efforts and Contributions by UNGEGN and Japan．
[ past topics]
Researchers (FY 2025)
- SASAGAWA, Akira : Head of Division
- IWAHASHI, Junko : Chief Researcher
- YOSHIDA, Kazuki : Researcher
- ENDO,Ryo: Researcher
Research Projects (FY 2025)
■ Special study in GSI
- Research on Improvement of Estimation Accuracy of "Seismic Ground Disaster Assessment System (SGDAS)" (FY2021-2025)
- Research on methods for generating and using historical topographic data (FY2023-2025)
Paper in English
(2025)
- Junko IWAHASHI: Depth to bedrock in Japan: insights from borehole data and terrain analysis using digital elevation models. Prog Earth Planet Sci 12, 23. DOI: 10.1186/s40645-025-00698-3
(2024)
- Kazuki YOSHIDA, Mamoru KOARAI: A simple method to automatically remove artificial terrain from airborne LiDAR DTMs in plain areas. Geomorphology 465, 109388. DOI:10.1016/j.geomorph.2024.109388
- Kazuki YOSHIDA, Ryo ENDO, Junko IWAHASHI, Akira SASAGAWA, Hiroshi YARAI: Aerial SfM–MVS Visualization of Surface Deformation along Folds during the 2024 Noto Peninsula Earthquake (Mw7.5). Remote Sensing 16(15), 2813. DOI:10.3390/rs16152813
- Junko IWAHASHI, Ryo ENDO：Seismic Ground Disaster Assessment System (SGDAS) of GSI Japan and its scope. 8th International Conference on Earthquake Geotechnical Engineering, Japanese Geotechnical Society Special Publication, 10(60), 2361-2366. DOI:10.3208/jgssp.v10.P2-02
- Ryo ENDO, Junko IWAHASHI：Estimation of Effect of Antecedent Rainfall on Coseismic Landslides. In: Hazarika, H., Haigh, S.K., Chaudhary, B., Murai, M., Manandhar, S. (eds) Natural Geo-Disasters and Resiliency. IC-CREST 2023. Lecture Notes in Civil Engineering, vol 445. Springer, Singapore. DOI:10.1007/978-981-99-9223-2_26
- Naoyuki YAMASHITA, Yasuhiro OHNUKI, Junko IWAHASHI, Akihiro IMAYA：National-scale mapping of soil-thickness probability in hilly and mountainous areas of Japan using legacy and modern soil survey. Geoderma, 446, 116896. DOI:10.1016/j.geoderma.2024.116896
- Ryo ENDO, Junko IWAHASHI：Analysis of the spatial distribution of landslides triggered by the 1923 Great Kanto Earthquake, Japan. Proceedings of the Japan Academy, Series B 100, 123-139.
(2022)
- Iwahashi J, Yamazaki D (2022): Global polygons for terrain classification divided into uniform slopes and basins. Progress in Earth and Planetary Science, 9, 33. [full text]
- Yamashita N, Ishizuka S, Hashimoto S, Ugawa S, Nanko K, Osone Y, Iwahashi J, et al. (2022): National-scale 3D mapping of soil organic carbon in a Japanese forest considering microtopography and tephra deposition. Geoderma, 406, 115534. [full text]
(2021)
- Iwahashi J., Yamazaki D., Nakano T., Endo R.(2021):Classification of topography for ground vulnerability assessment of alluvial plains and mountains of Japan using 30 m DEM. Prog Earth Planet Sci 8, 3 [full text]
[ past papers]
Contact us
Contact us:gsi-gia+1=gxb.mlit.go.jp (Please set = to @)
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