I think that all authors have the purpose and reason for writing. The majority of this is to understand the catastrophe, destruction and influence of the tsunami and the earthquake of the attacked countries. In addition, some of the information in this article is to understand the efforts of other countries to support affected people. Other articles explain the origin of this disaster. For example, in one article, it explains that years of strain accumulated in the two faults of the subduction zone of Sumatra, causing sudden sliding and causing an earthquake.
Indonesia suffered one of the most devastating tsunamis in 2004 when a magnitude 9.3 earthquake occurred on Sumatra. Before the tsunami, there was no tsunami warning system to detect tsunami in the Indian Ocean and to warn people. Also, since the waves occurred in the Indian Ocean before spreading in the Pacific Ocean, there was no way to keep people safe. Approximately 227,000 people died in the 2004 tsunami, the worst tsunami in history. Volcano - Most volcanoes in the world are in and around the ring of fire. They can be found in many coastal areas including New Zealand, Japan, Philippines, Alaska, Hawaii, Washington, California and Chile. The volcanic chain of the Island of Hawaii spans 2,500 kilometers across the North Pacific and is currently located in the hotspot. The two most fatal volcanic eruptions in the world occurred in Indonesia
The earthquake itself is devastating. But in coastal areas there is a greater risk. That is a terrible tsunami. Due to the tornado speed and volcanic eruption eruption, the tsunami can be replaced with people's monuments, elements of nature, and human architecture. We need to invest more energy in the detection system so that people can cope better with the possibility of the impact of the tsunami.
The tsunami information posted on the tsunami information bulletin board is to notify that an earthquake has occurred and to recommend a possibility of a tsunami. In most cases, there is no destructive tsunami threat. This information is used to prevent unnecessary evacuation as earthquakes may be felt strongly in coastal areas. Where appropriate this information may warn that a destructive localized tsunami may occur on the coast near the epicenter of the earthquake (usually within 100 km). Since the first announcement of PTWC takes 10-20 minutes to be released, they are ineffective due to the local tsunami, which may normally take several minutes. However, in this case, since this information may be useful for local governments, we will investigate at least whether the tsunami has occurred, and if so, we can start the recovery process quickly.