Risk Perception and Media Polarization in International Environmental Disputes: The Fukushima Wastewater Issue in South Korea

Abstract

This study examines how media outlets perceive and frame environmental issues, focusing specifically on South Korean news reporting on the Fukushima wastewater release. Using computational text analysis methods and formal statistical testing, this research investigates ideological polarization in media framing and its implications for risk perception. Statistical analyses provide significant evidence that progressive media emphasized environmental risks, public health concerns, and governmental accountability, whereas conservative media highlighted political actors, institutional governance, and diplomatic considerations. Media polarization peaked before policy implementation but moderated afterward. After implementation, moderate newspapers exhibited ideological convergence toward the center, accounting for a substantial portion of the observed positioning shifts, while strongly partisan outlets maintained or slightly intensified their prior positions. These results suggest that ideological polarization is most prominent in the early stages of contentious environmental policies but moderates as empirical scrutiny replaces speculation, with varying effects across ideological groups. This study provides insights into the temporal dynamics of media polarization and its role in shaping risk perception during policy implementation and regulatory oversight.

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