Hii readers, I’m back with another topic, which is a little bit sad but it’s natural. We can’t stop it or avoid it, but we can try to save our planet earth from these natural calamities. Hope this blog can give you some information that will be helpful to you all.
What we can call a Devastating Tsunami?
The phenomenon we call tsunamis is a series of large waves with very long wavelengths and periods, usually caused by violent and impulsive underwater disturbances or activity near the coast or in the ocean. A large tsunami is generated when a large amount of water moves rapidly, or when the sea floor rises and falls rapidly due to an earthquake. Waves leave the area of ​​origin and can be very dangerous and damaging once they reach the shore. Damaging houses, and killing livestock, it can be a really devastating tsunami.
The word tsunami (pronounced tsunami) is a combination of the Japanese words tsu (meaning port) and nami (meaning wave). Although the term “earthquake or tsunami” is often used to describe the same phenomenon, tsunamis can be produced by other non-seismic disturbances such as volcanic eruptions or underwater landslides, and tsunamis are These terms are misleading as they have different physical properties. tsunami.
Tsunamis are completely unrelated to astronomical tides caused by extraterrestrial gravitational influences from the Moon, Sun, and planets. Tsunami in Japanese, which means harbor wave, is, therefore, a precise, official, and comprehensive term. It is internationally accepted as it covers all forms of shock wave generation.
A tsunami often looks like a wall of water, hitting the coast, pounding every 5 to 60 minutes, and potentially endangering you for hours. The first wave may not be the biggest, and often the biggest wave is her second, third, fourth, or later wave. After waves surge inland, they often recede toward the sea as far as one can see, exposing the seabed. The next wave landed within minutes, carrying many floating debris destroyed by the previous wave.
When waves break into the harbor, they create very strong and dangerous currents that can easily destroy ship anchorages. Tsunami intrusions into rivers and other waterways can also form boreholes reaching far inland.
Tsunamis can be caused by landslides, volcanic eruptions, and even meteorite impacts into the ocean. But they are most often caused by earthquakes in which the sea floor suddenly shifts. When that happens, there is a transfer of energy from the ocean floor to the ocean, radiating surface waves in all directions. In deep water, these waves may not be detectable. However, when a tsunami enters shallow water, it slows down and increases in height. Water along the coast can recede significantly. A large wall of turbulent water called a “bore” also forms.
When a tsunami hits, it comes ashore like a surging tide and strikes with devastating force. A series of waves can last for hours. The first may not be the last or the best. For your own safety, familiarize yourself with the warning signs that may indicate an approaching tsunami. rapid rise or fall of water along the coast; the powerful roar of the sea.
A tsunami is a series of waves in a body of water, generally, an ocean or a large lake, caused by a large body of water displacement. Earthquakes, volcanic eruptions, and other underwater explosions (including explosions, landslides, glacier breaks, meteorite impacts, and other disturbances) on or underwater can all produce tsunamis. Unlike normal ocean waves, which are generated by the wind and tides and are caused by the gravitational pull of the moon and the sun, tsunamis are caused by the movement of water during major events.
Tsunami waves differ from normal currents and ocean waves because they have much longer wavelengths. Instead of appearing as a crashing wave, a tsunami may initially resemble a rapidly rising tide. For this reason, it is often called a tsunami, but this usage is not favored in the scientific community because it can give a false impression of the causal relationship between tides and tsunamis. consists of a series of waves with a period of, arriving in what is known as a “wave train”.
What are the destructive factors of tsunamis?
There are three tsunami destructive factors: flooding, wave impact on structures, and erosion. Strong tsunami currents erode foundations, causing bridges and revetments to collapse. Floating and dragging forces move houses and overturn rail cars. Floating objects such as boats and cars are dangerous projectiles that can smash into buildings, damage power lines, and cause fires, causing considerable damage.
Damaged port vessels and fires from ruptured oil storage tanks and onshore refineries can cause more damage than those caused directly by the tsunami. Of increasing concern is the potential impact of a tsunami when receding water exposes a nuclear power plant’s cooling water intake.
Even if we know the magnitude and location of an earthquake, we cannot accurately predict tsunamis. Geologists, oceanographers, and seismologists analyze every earthquake and may or may not issue a tsunami warning based on many factors. However, there are some warning signs of an impending tsunami, and automated systems can provide timely warnings in the immediate aftermath of an earthquake to save lives. One of the most successful systems uses bottom pressure sensors attached to buoys to constantly monitor the pressure in the upper water column. Areas with high tsunami risk typically use tsunami warning systems to warn residents before waves reach land.
A tsunami warning will be triggered if there is a large enough earthquake magnitude and other information. The subduction zone around the Pacific Ocean is seismically active, but not all earthquakes generate tsunamis. Computers help analyze tsunami risk for all earthquakes occurring in the Pacific Ocean and adjacent continents.
Health effects in regards to the Devastating Tsunami
Immediate health concerns
• After rescuing survivors, the most important public health concerns are safe drinking water, food, shelter, and medical care for the injured.
• Flooding can pose health risks such as contaminated water and food supplies.
• Losing shelter leaves humans vulnerable to insects, heat, and other environmental hazards. Most tsunami-related deaths are related to drowning, but trauma is also a major concern.
• Injuries such as broken limbs and head injuries are caused by physical impact from people being pushed into debris such as houses, trees and other stationary objects. As the water recedes, powerful undertows of debris can be dragged into populated areas, causing further injuries and eroding buildings and services.
• Medical care is essential in underserved areas.
Secondary effect
• Natural disasters do not necessarily increase the incidence of infectious diseases. However, contaminated water and food supplies, lack of shelter and medical care can exacerbate pre-existing diseases in affected areas.
• Decaying corpses greatly reduces the risk of large-scale disease outbreaks. Those most at risk are those handling bodies and preparing them for burial.
Long-Lasting effect
• The effects of disasters are long-lasting. The need for financial and material assistance is heightened in the months following a disaster.
• Investigation and surveillance of infectious diseases, water-borne and insect-borne diseases.
• Divert medicines from unaffected areas to meet the needs of affected areas.
• Restore normal primary health services, water systems, housing, and employment. When
• Support communities for spiritual and social recovery when the crisis subsides.
