Analysis on Researchers’ Practical Activities for Radiation Risk Reduction and Risk Communication after the Fukushima Nuclear Power Plant accident

Abstract

After Great East Japan Earthquake and following the Fukushima Nuclear Power Plant accident, many researchers have got into action in Fukushima area using their expertise. We examined such activities by analyzing published papers and research fund reports using a text-mining technique. We extracted activity’s objective, time of activity started, and area of activities within Fukushima prefecture (e.g. Hamadori, Nakadori, and Aizu) from texts in the papers and reports (total 491 reports). Cross tabulation, text mining, and correspondence analysis were used for this analysis. This study clarified that the main practical activities changed by time and the activities differed by area. This will be a fundamental record for evaluating contribution of academia/expert after a disaster.