Spatial datasets associated with decontamination and remediation operations following the

23 shapefiles and one raster file compile spatial data related to the Fukushima Daiichi Nuclear Power Plant accident. The dataset includes delineations of decontamination zones, administrative boundaries, river networks, dam reservoirs, and a reconstructed map of initial 137Cs fallout across eastern Japan. It was created by researchers from the Centre National de la Recherche Scientifique to support a 2023 publication in the SOIL journal.

Use Cases

• Mapping radiocesium contamination levels based on the reconstructed 137Cs fallout raster.
• Analyzing the spatial relationship between decontamination zones (e.g., Difficult-to-Return Zone) and hydrological features.
• Studying the correlation between administrative boundaries and areas with mushroom consumption restrictions.
• Modeling environmental transport of contaminants using river drainage area and hydrographic network data.

Strengths

• Contains 23 distinct spatial layers, providing multiple related data types.
• Includes a specific raster file for 137Cs fallout, decay-corrected to July 2011.
• Covers a significant time span related to the accident and subsequent remediation (2011-2023).
• Data processing details, including interpolation method (IDW) and projection system (EPSG:WGS 84), are documented.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.
• The dataset's spatial coverage is focused on eastern Japan, specifically Fukushima-affected areas.

Provenance

Source

Compiled by Olivier Evrard (Centre National de la Recherche Scientifique) from previously published spatial layers.

Collection Method

Map processing was carried out using QGIS 3.26.0; the 137Cs raster was generated via Inverse Distance Weighted interpolation.

Time Range

2011 to 2023

Freshness

Associated with a publication submitted in 2023; last update date is unknown.

Geography

Eastern Japan, with focus on Fukushima Prefecture and surrounding areas.