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College of Arts & Sciences
Hazards & Vulnerability Research Institute

Spatiotemporal Dynamics of Flood Impact by Integrating Satellite, VGI, and Socal Media Data: Rapid Assessment of the October Flood

Lead Investigator: Zhenlong Li, Department of Geography Co-PIs: Cuizhen Wang, Christopher Emrich, Diansheng Guo


Rapid assessment of flood impact is important for local authorities and emergency responders to quickly identify the areas for immediate attention. Remote sensing monitors the event through a synoptic view of Earth surface changes; VGI collects collaborative usergenerated content through citizen science; and social media captures micro-level, real-time information via “human-as-sensors”. We innovatively integrate the three data sources to explore the spatiotemporal dynamics of flood impact within the time frame of the October flood. The data collected and model framework designed here will serve as the basis of our continuous research in assessing vulnerability and society resilience of disaster events.


Li, Zenlong, Cuizhen Wang, Christopher T. Emrich, and Diansheng Guo, 2017.  A novel approach to leveraging social media for rapid flood mapping: a case study of the 2015 South Carolina floods, Cartography and Geographic Information Science, DOI:10.1080/15230406.2016.1271356