European Journal Of Advances In Engineering And Technology
Published March 31, 2022 | Version v1
Journal article Open

Initial Tsunami Levels in the Manila Trench (Philippines) from Potential Megathrusts and 1 in 100 Year and 1 in 1000 Year Return Period Earthquakes

Creators

  • 1. Technical Director, Royal HaskoningDHV, Westpoint, Peterborough Business Park, Lynch Wood, Peterborough PE2 6FZ, United Kingdom

Description

ABSTRACT

A potential Megathrust in the Manila Trench (Taiwan-Philippines) with earthquake magnitude Mw ≥ 9.0 cannot be ruled out. In this paper initialtsunami levels from potential Megathrusts (Mw 9.35 and 9.34) in the Manila Trench have been presented following approaches from previous studies by various authors. Then initial tsunami levels from an 1 in 100 year return period earthquake have been presented to support design of marine structures and facilities. Finally, initial tsunami levels from an 1 in 1000 year return period earthquake have been presented to support emergency and rescue planning and operation.The initial tsunami levels have been generated using the MIKE21 Toolbox of DHI. These initial tsunami levels can be used to drive a tsunami propagation model to derive tsunami levels at anywhere around the South China Sea region. The methodology described in this paper for generating initial tsunami levels in the Manila Trench could also be applied to this type of events at other sites around the world.

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