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Hazardous base surges of Taal's 2020 eruption
A M F Lagmay1,2, M I R Balangue-Tarriela3, M Aurelio3
1UP National Insitute of Geological Sciences, College of Science, University of the Philippines, Diliman, Quezon City, Philippines. aalagmay@up.edu.ph.
Scientific Reports
|August 4, 2021
Summary
Taal Volcano
Area of Science:
- Volcanology
- Geology
- Planetary Science
Background:
- Taal Volcano erupted in January 2020 after 43 years of dormancy.
- This eruption generated hazardous base surges, a dangerous volcanic phenomenon.
Purpose of the Study:
- To analyze the characteristics of dune bedforms created by volcanic base surges.
- To determine the impact dynamic pressures and velocities of these base surges.
- To enhance understanding of volcanic hazards and their risks.
Main Methods:
- Field observations and data collection.
- Remote sensing using Unmanned Aerial Vehicle (UAV) and LiDAR.
- Numerical modeling for analyzing surge dynamics.
Main Results:
- Base surges near the crater rim traveled at 50-60 m/s.
- Impact dynamic pressures reached at least 1.7 kPa.
- Surges caused significant livestock mortality and traveled offshore, leaving deposits.
Conclusions:
- The study provides rare, detailed observations of a fresh base surge deposit.
- Findings are crucial for understanding volcanic hazards on Earth and potentially other planets.
- The research advances knowledge on dune formation processes in volcanic and extraterrestrial environments.
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