# Horonobe Underground Research Center
**Wikidata**: [Q11481769](https://www.wikidata.org/wiki/Q11481769)  
**Source**: https://4ort.xyz/entity/horonobe-underground-research-center

## Summary  
The Horonobe Underground Research Center is a research institute in Japan operated by the Japan Atomic Energy Agency (JAEA) to study geological disposal of radioactive waste. Located in Hokkaido, it conducts underground scientific investigations to assess the suitability of deep geological formations for long-term nuclear waste storage. The facility plays a key role in Japan's efforts to develop safe and permanent solutions for high-level radioactive waste.

## Key Facts  
- Operated by the Japan Atomic Energy Agency (JAEA).  
- Located in Horonobe, Hokkaido, Japan at coordinates 45.043333°N, 141.861111°E.  
- Focused on researching geological disposal methods for radioactive waste.  
- Part of Japan’s national strategy for long-term management of high-level nuclear waste.  
- Classified as a research institute with specialized underground facilities.  
- Has a presence on Wikimedia Commons and Japanese Wikipedia.  

## FAQs  
### Q: What is the Horonobe Underground Research Center used for?  
A: It is used to conduct research on the geological disposal of radioactive waste. Scientists investigate the properties of underground rock formations to determine their suitability for safely storing high-level nuclear waste over long periods.

### Q: Who operates the Horonobe Underground Research Center?  
A: The center is operated by the Japan Atomic Energy Agency (JAEA), which oversees nuclear research and development activities in Japan.

### Q: Where is the Horonobe Underground Research Center located?  
A: The center is located in Horonobe, Hokkaido, Japan, at latitude 45.043333 and longitude 141.861111.

## Why It Matters  
The Horonobe Underground Research Center addresses one of the most critical challenges in nuclear energy: the safe, long-term disposal of high-level radioactive waste. As countries continue to rely on nuclear power, finding secure geological repositories becomes essential for public safety and environmental protection. The research conducted at Horonobe contributes directly to Japan’s policy decisions regarding nuclear waste management and informs international best practices in geologic disposal technologies. By studying rock stability, water infiltration, and radionuclide migration deep underground, the center supports evidence-based planning for future waste repositories.

## Notable For  
- Being one of Japan’s leading sites for geological disposal research of radioactive waste.  
- Hosting extensive underground experimental facilities designed for multi-decade scientific studies.  
- Serving as a model site for international collaboration in nuclear waste repository science.  
- Providing data crucial to Japan’s roadmap toward implementing a final disposal system for high-level waste.  

## Body  

### Overview  
The Horonobe Underground Research Center is a dedicated scientific facility focused on understanding how high-level radioactive waste can be safely isolated in deep geological environments. Its work forms part of Japan’s broader initiative to establish a permanent solution for nuclear waste generated from decades of atomic energy use.

### Location and Infrastructure  
Situated in the town of Horonobe, Hokkaido Prefecture, the center leverages the area's stable sedimentary rock layers for detailed subsurface investigation. The location was selected due to its low seismic activity and thick layers of mudstone, considered ideal candidates for containing radioactive materials over thousands of years.

Key infrastructure includes:
- Deep boreholes and shafts extending several hundred meters underground.
- Surface laboratories for sample analysis and monitoring equipment.
- Real-time instrumentation for measuring groundwater flow, stress fields, and chemical interactions within rock strata.

### Research Focus  
Research at the center centers around three main areas:
- **Geological characterization**: Mapping physical and chemical properties of host rocks.
- **Hydrogeology**: Studying groundwater movement through bedrock and its potential interaction with stored waste.
- **Performance assessment**: Modeling long-term behavior of engineered barriers and natural systems under various conditions.

These efforts support the development of a robust safety case required before licensing a full-scale disposal facility.

### Institutional Role  
As part of JAEA’s Nuclear Cycle Backend Division, the center collaborates closely with government regulators, academic institutions, and international partners such as the OECD Nuclear Energy Agency. Findings from Horonobe have contributed to reports submitted to Japan’s Ministry of Economy, Trade and Industry (METI) and influence regulatory frameworks governing nuclear waste policy.

### International Significance  
While primarily serving domestic needs, the center also participates in global initiatives aimed at advancing shared knowledge in radioactive waste management. Its methodologies and findings are referenced in multinational forums discussing best practices for geological disposal programs worldwide.