Research Dataset: Optimized Site Parameters Vs30 for Seismic Hazard Analysis in Japan (derived from J-SHIS)

This research tool provides a processed subset of the J-SHIS seismic hazard data (National Research Institute for Earth Science and Disaster Resilience, NIED). Developed during research at Kyoto University, this dataset is reformatted into a standalone SQLite container. It is specifically designed as a computational tool for high-performance spatial queries in seismic hazard and risk analysis and site effect modeling. Key Features: Source Data: Derived from J-SHIS Seismic Hazard Maps (Japan) Ver. 1.0 (2021-03-03). Data Content: Includes WGS84 coordinates (Lon/Lat), Average Shear-wave velocity (Vs30), and Site Amplification Factors (AF). Technical Optimization: High-performance spatial indexing for rapid coordinate-based lookups, optimized for Python and MATLAB workflows. Format: SQLite database (.sqlite), compatible with Python (Pandas, Sqlite3, SQLAlchemy), MATLAB, and GIS software. Research Modifications: This is a DERIVATIVE RESEARCH WORK. Original J-SHIS records have been filtered, WGS84 coordinates were assigned, some records removed, and the data structure was optimized for computational efficiency in site-response simulations. Database Structure: vs30_data (lon, lat, vs30, af), metadata, db_info Code Availability: To facilitate the use of this dataset, a reference Python implementation for reading and querying the database is available. The source code is licensed under the GNU GPL v3.0 and can be found at: https://doi.org/10.5281/zenodo.19386410. Terms and Conditions: This dataset is a DERIVATIVE RESEARCH WORK based on data provided by the Japan Seismic Hazard Information Station (J-SHIS) from the National Research Institute for Earth Science and Disaster Resilience (NIED). In accordance with J-SHIS Terms and Conditions: Citation: Any reprint or quotation of this data must clearly acknowledge the source: "Data provided by NIED J-SHIS". Also, cite source Vs30 data provided by Wakamatsu and Matsuoka (2013, 2020), and source AF data provided by Fujimoto and Midorikawa (2006). Non-commercial use: This dataset is provided freely for research and educational purposes. If you plan to use or sell the results for commercial purposes, you are required to contact NIED (Japan) for prior approval. Disclaimer: The author (Miroslav Hallo, Kyoto University) and NIED take no responsibility for any damage resulting from the use of this data. Original Terms: Full J-SHIS terms of use are available at: https://www.j-shis.bosai.go.jp/map/JSHIS2/download.html?lang=en. Version: Initial Release (2026-04-02) Cite dataset as: Hallo, M. (2026). Research Dataset: Optimized Site Parameters Vs30 for Seismic Hazard Analysis in Japan (derived from J-SHIS) (v1.0) [Dataset]. Zenodo. https://doi.org/10.5281/zenodo.19379171 Cite source data as (required): Wakamatsu, K., Matsuoka, M. (2013). Nationwide 7.5-arc-second Japan engineering geomorphologic classification map and Vs30 zoning. Journal of Disaster Research 8(5), 904–911. https://doi.org/10.20965/jdr.2013.p0904 Wakamatsu, K., Matsuoka, M. (2020). Update of the nationwide 7.5-arc-second Japan engineering geomorphologic classification map and Vs30 zoning. Bulletin of Japan Association for Earthquake Engineering 40, 24–27 (in Japanese). Fujimoto, K., Midorikawa, S. (2006). Relationship between average shear-wave velocity and site amplification inferred from strong motion records at nearby station pairs. Journal of Japan Association for Earthquake Engineering 6(1), 11–22 (in Japanese). https://doi.org/10.5610/jaee.6.11