The paper studies various tsunami s

The paper studies various tsunami scenarios in South China Sea
using TUNAMI-N2-NUS model. The worst and moderate tsunamis
are assumed to be generated from a giant rupture along the Manila
Trench. It is shown that in the worst case scenario tsunami height
may reach 14 mnear the Philippines and southwest of Taiwan. Part
of the fault zone with the largest slip facing southeastern coast of
China, central coast of Vietnam, and the Paracel Islands may lead to
large waves up to 8 m in height. Due to the strong wave attenuation
at shallow continental shelf, southwestern part of the SCS
would experience waves with heights of 1–2 m and about 40 cm
further in Singapore Strait. Tsunami arrival time is expected to
be 2 h at central coast of Vietnam, 2.5 h at the southeast coast of
China and more than 12 h at Singapore region.
Sensitivity analysis of tsunami parameters on rupture scenarios
is presented. Rupture speed and direction can result in a notable
change in the wave height and arrival time. Sensitivity analysis
on slip magnitude shows that the nonlinear phenomenon is not
very prominent for offshore tsunami waves; therefore, one can
derive a direct linear function connecting wave height near coastal
zones with the scale of the slip magnitude at source. In Singapore
Strait tsunami waves are greatly reduced due to a combination of
two factors, namely attenuation at large shallow continental shelf
and refraction–diffraction at the natural ‘‘breakwater” composed of
the Natuna Islands.