Scott, K. and Errett, N. (2017). Content, Accessibility, and Dissemination of Disaster Information via Social Media During the 2016 Louisiana Floods. (Abstract only.) Journal of Public Health Management and Practice.
The authors analyzed Facebook and Twitter posts made by federal, state, and local government agencies (including public health and emergency management) before, during, and after the flooding events. They scored each post using accessibility and dissemination scales and found that most posts were related to situational awareness and recovery.