Analyzing Behavioral Responses Caught on Video to the Hunga Tonga–Hunga Haʻapai Rruption, Atmospheric Shockwaves, and Tsunami
Description:
The 15 January 2022 eruption of Hunga volcano,Tonga, generated atmospheric shockwaves recorded around the globe and a Pacific-wide tsunami. There was widespread documentation of these events via smartphones and closed-circuit television (CCTV) footage, with dozens of videos posted online. These videos offer a significant source of data about physical phenomena and human behavior. This research is critical as little is currently known about human reaction to volcanic eruptions followed by tsunami of these magnitudes, this footage offers an important source of data. Our research team collected an archive of more than 100 videos posted voluntarily to social media sites (Twitter, Reddit, TikTok, YouTube) over a period of 90 days post-event that contained more than 460 individual separate recordings; new videos were uploaded in a staggered fashion and sometimes deleted quickly. This data set offers novel information about people's reactions to the eruption, shockwaves, and attendant tsunami obtained from different nations throughout the Pacific Ocean basin. We present results of audio-visual data, utilizing methods recently developed for similar analysis of social-media-sourced footage from major earthquakes in New Zealand, and the United States and Puerto Rico. We find that larger groups didnot move to evacuate from the beach as quickly as smaller groups of people, even when volcano and tsunami related alerts are clearly distributed and received. Further, the presence of children slowed the taking of protective action. Our findings can inform future education and outreach efforts that assist in strengthening standardized protective actions for the impacted regions, as well as potentially exploring multi-hazard drills.
Session: The Future of Tsunami Science, Preparedness and Response
Type: Oral
Date: 4/19/2023
Presentation Time: 05:30 PM (local time)
Presenting Author: Sara K. McBride
Student Presenter: No
Invited Presentation:
Authors
Sara McBride Presenting Author Corresponding Author sara.mcbride@gmail.com U.S. Geological Survey |
Danielle Sumy danielle.sumy@earthscope.org EarthScope Consortium |
Janine Krippner jkrippner@gmail.com University of Waikato |
Jenniffer Santos Hernandez jenniffer.santos1@upr.edu University of Puerto Rico |
David Damby ddamby@usgs.gov U.S Geological Survey |
Summer Ohlendorf summer.ohlendorf@noaa.gov National Oceanic and Atmospheric Administration |
Elizabeth Cochran ecochran@usgs.gov U.S. Geological Survey |
Jessica Ball jlball@usgs.gov U.S. Geological Survey |
Julia Becker j.becker@massey.ac.nz Massey University |
Lauren Vinnell L.Vinnell@massey.ac.nz Massey University, Wellington, , New Zealand |
David M Johnston D.M.Johnston@massey.ac.nz Massey University, Wellington, , New Zealand |
Carol Stewart c.stewart1@massey.ac.nz Massey University, Wellington, , New Zealand |
Stephanie L Ross sross@usgs.gov U.S. Geological Survey, Moffett Field, California, United States |
Nathan Wood nwood@usgs.gov U.S. Geological Survey, Moffett Field, California, United States |
Ana Ake slapinctonga@gmail.com SLAP, Inc., nukuʻalofa, , Tonga |
Dare Baldwin baldwin@uoregon.edu University of Oregon, Eugene, Oregon, United States |
Analyzing Behavioral Responses Caught on Video to the Hunga Tonga–Hunga Haʻapai Rruption, Atmospheric Shockwaves, and Tsunami
Category
The Future of Tsunami Science, Preparedness and Response