World Tsunamis: Myths and Facts
Tsunami is a natural phenomenon that often causes panic and fear. Even though information about tsunamis is becoming more widespread, there are many myths circulating that can confuse people. Below, we will review the myths and facts surrounding tsunamis.
Myth 1: Tsunamis Only Occur in Large Oceans
Fact: Tsunamis can occur in all types of water bodies, including lakes and rivers. Although more common in the ocean, unique events such as volcanic eruptions or landslides on river banks can cause large waves similar to tsunamis.
Myth 2: Tsunamis Always Happen After Earthquakes
Fact: Although earthquakes are the main cause of tsunamis, other factors such as underwater landslides, volcanic eruptions, and even meteors falling into the ocean can also trigger large waves.
Myth 3: A Tsunami is Just One Big Wave
Fact: Tsunamis often consist of a series of waves called a “wave train”. The first wave may not always be the largest; the next wave could be much more dangerous. In some cases, the second or third wave is of greater strength, allowing for more severe damage.
Myth 4: Tsunamis Can Be Stopped
Fact: There is no way to stop a tsunami. Although technology enriches early warning and evacuation methods, physical efforts to stop tsunami waves are impossible. Research is being conducted to reduce the impact of tsunamis, but these efforts are still in the early stages.
Myth 5: Residents Don’t Need to Worry if They Hear Thunderous Sounds at Sea
Fact: The roaring sound produced by a tsunami is often a sign of an approaching wave. This can even happen long before the waves are visible. An important warning for residents on the beach when they hear this sound is to immediately move away from the coastal area.
Myth 6: All Countries Are Able to Predict Tsunamis Accurately
Fact: Although tsunami detection technology has developed, not all countries have adequate tsunami warning systems. Countries and regions located on the edge of the ocean, such as Indonesia and Japan, are better prepared to face tsunami risks with more sophisticated warning systems than countries that are less at risk.
Myth 7: After the Tsunami Passes, the Area is Safe to Return to
Fact: When the tsunami wave recedes, the risk does not immediately disappear. The backflow of water can produce strong currents and carry dangerous objects. In addition, subsequent tsunamis often occur which can endanger safety.
Myth 8: Tsunamis Don’t Happen in Seismic Places
Fact: Tsunamis can occur anywhere if the right conditions are present, including areas that are not known to be seismic zones. Landslides and volcanic activity, which are not directly related to the earthquake, can cause tsunamis.
Myth 9: Only sea water causes tsunamis
Fact: Tsunamis can carry various materials, from soil, sand, to building debris. This can increase damage when waves reach land.
Myth 10: Tsunamis Are a New Phenomenon
Fact: Tsunamis have occurred throughout human history and are recorded in various ancient documents. Well-known tsunami events, such as the 2004 Indian Ocean Tsunami, have generated much research and awareness.
By understanding these facts, a person can be better prepared to face threats that may arise from a tsunami. Education and preparedness are the keys to minimizing the risks that can be caused by this natural disaster.
