Reflections On Week 4 Grace

By Amos Ng (2) 2D :

After shortlisting some of the natural disasters, we decided to choose tsunamis and earthquakes as our main focus.

So far we have found out that

1. A natural disaster is the consequence of a natural hazard which affects human activities

2. Tsunamis and earthquakes has quite a close relationship as most tsunamis (recorded by history) are caused by earthquakes.

3.A tsunami is a series of waves created when a body of water, such as an ocean, is rapidly displaced.

4. Earthquakes that are above or below sea, volcanic eruptions and landslides can lead to potential tsunamis.

5. Pacific Tsunami Warning and Mitigation System (PTWS) is a precaution of tsunamis.

6. The objective of the PTWS is to detect, locate and determine the magnitude of potential tsunami earthquakes occurring in the Pacific Basin or its immediate margins.

7. After PTWS confirmed a tsunami

-A tsunami warning is issued to warn of an imminent tsunami hazard

-The warning includes predicted tsunami arrival times at the selected coastal communities and distance the tsunami could travel in a few hours 

-The National Oceanic & Atmospheric Administration (NOAA) Weather Radio System then provides direct broadcast of tsunami information to the public.

Thats all... So far...