Integrating Multiscale Datasets for Monitoring Air Dose Rates in Fukushima - 18437
- Lawrence Berkeley National Laboratory (United States)
- Japan Atomic Energy Agency (Japan)
Six years has passed since the radionuclide release occurred at the Fukushima Daiichi NPP. Measurements and monitoring of air dose rates (i.e., ambient dose equivalent rates) in the region around the Fukushima Daiichi NPP have been performed continuously since the accident. Such mapping efforts are essential to protect the public, to guide decontamination efforts, and to plan the return of evacuated residents. An extensive monitoring program has enabled to develop a data-driven environmental decay model for describing and predicting the decay of radiation air dose rates in the environment. However, it has been difficult to quantify the heterogeneity of environmental decay in the regional scale, since spatially extensive airborne survey datasets often have discrepancy with the ground-based measurements and have a larger uncertainty. Recently, a Bayesian hierarchical modeling approach was developed to integrate multiscale datasets (i.e., car, walk and airborne surveys), and also to estimate the spatial distribution of air dose rates in high resolution over space. The integrated air dose rate maps have been contributed to planning of the future decontamination and resident's return as well as associated cost. In this study, we aim to extend this approach and predict the area of the evacuation zone in the future. WE coupled the integrated map with the data-driven ecological decay model. Results show that the area of vacuation zone (i.e., the area above 3.8 micro-Sv/yr) will shrink significantly in the next twenty years, and it will be fully contained in the non-residential forested area by 2040. (authors)
- Research Organization:
- WM Symposia, Inc., PO Box 27646, 85285-7646 Tempe, AZ (United States)
- OSTI ID:
- 22977732
- Report Number(s):
- INIS-US-20-WM-18437; TRN: US21V0360017777
- Resource Relation:
- Conference: WM2018: 44. Annual Waste Management Conference, Phoenix, AZ (United States), 18-22 Mar 2018; Other Information: Country of input: France; 10 refs.; Available online at: https://www.xcdsystem.com/wmsym/2018/index.html
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterizing regional-scale temporal evolution of air dose rates after the Fukushima Daiichi Nuclear Power Plant accident
A multiscale Bayesian data integration approach for mapping air dose rates around the Fukushima Daiichi Nuclear Power Plant
Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
AMBIENT DOSE EQUIVALENTS
DATA COVARIANCES
DECONTAMINATION
EVACUATION
FORECASTING
FUKUSHIMA DAIICHI NUCLEAR POWER STATION
JAPAN
MAPPING
POPULATION RELOCATION
RADIATION DOSES
RADIATION MONITORING
RADIATION PROTECTION
REMEDIAL ACTION
REMOTE SENSING
SAMPLING