Tsunami is a deadly disaster that attacks shoreline areas. It is a huge wave that can sweep the area that contains debris. Since it is dangerous for lives, local authorities have to pay attention to what a tsunami warning is, as well as the society, to save themselves from this disaster.
This wave only comes after a cracked seabed because of an earthquake or volcanic eruption under the sea. People cannot detect it without equipment, so the nation’s existence is required. Before understanding more about the warning, here is some related information about tsunamis.
What is A Tsunami Warning?
A tsunami warning is a warning issued by the systems that indicates that a tsunami may come to the shoreline area soon. This is an important warning because society should hurry to evacuate themselves before a tsunami destroys the area and causes loss.
The warning should be integrated with good management systems. It is part of local authorities’ policy because the society could not manage the integration. The main purpose of a tsunami warning is to minimize the loss and impact of this disaster when it happens.
The Characteristics of Tsunami Warning
There are several characteristics of what is a tsunami warning before it gets delivered to everyone’s gadget as a sign to evacuate. Once the warning is issued, society should follow the order by going to a safer place as soon as possible.
1. Trigger of tsunami
A trigger of tsunamis can be coming from volcanic activities under the sea. Eruption may trigger the sea bed to crack and cause tsunamis. The main trigger is an earthquake which has a high magnitude. If it is more than 7.5 and above, it can be a big trigger to cause a tsunami.
2. The location of the trigger
Though the earthquake or volcanic activity is severe, it also still depends on the location of the trigger. The closer the location to the shoreline, the possibility of a tsunami can be higher too. The strong earthquake may cause higher and faster waves that come to the shoreline.
3. The speed of the wave
The speed of tsunami waves can be different because it depends on the magnitude of an earthquake and the location. Usually, the waves can travel at more than 500 kilometers per hour. Once they reach the shoreline, it goes slower but the height of the wave is higher.
4. Processing warning
After the tsunami is in the detection system, then all data collected will be processed fast. The data includes the activity of seismic, the speed and height of waves, and the movement. The system reads the possibility of affected areas and the time when a tsunami arrives.
5. Warning Levels Issued
There are three different what is a tsunami warning levels that can be issued. The first warning is about earthquake notification that may or may not cause tsunamis. If the seismic activities can trigger a tsunami, the advisory warning will be spread so people can go to evacuation areas.
The Function of Tsunami Warning
1. Saving lives
The number of people who live in the coastal area is always high. With a tsunami warning system, they can protect themselves by going to the evacuation area when the tsunami comes. Earlier the warning can help them to avoid death because of this disaster.
2. Minimizing damage
A tsunami is a big disaster and the damage causes a big loss for people and the nation. A good tsunami warning system prevents bigger damage that could have been done in any kind of measurement. For example, moving the vehicles to other places.
Economic loss because of tsunamis is always huge. Evacuation in advance may help people to save their lives during and after the disaster itself. Economic impact may be better after the disaster because they do not have the worst case of loss.
3. Improving readiness and awareness
Awareness of society who live in the coastal area is very important. They can understand the danger that comes after a tsunami event because of proper tsunami warning systems. The future events that may come, they have already understood what to do and prepare.
After understanding what is a tsunami warning, local authorities should prepare the best device to send a warning message when it has a potential tsunami. SMS broadcaster can support the system by sending accurate and fast messages so that people can go to evacuation areas quickly.
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