Monday, September 29, 2014

Monday, September 29, 2014

Stay alert, Bali prone to tsunamis

Stay alert, Bali prone to tsunamis
Over the last hundred years, Bali Indonesia has not been affected by the tsunami. However, in addition to several other islands of Bali, Java and Sumatra, the tsunami hit a few times ever. Tsunami disaster that is the most severe and resulted in thousands of people dying is what happened in Aceh and North Sumatra, Indonesia.

The tsunami is the displacement of a body of water caused by changes in sea surface vertically with a sudden. Changes in sea level can be caused by an earthquake centered under the sea, underwater volcanic eruptions, underwater landslides, or in the sea or a meteor hit. Tsunami waves can propagate in any direction. Energy contained in the tsunami wave height is fixed to the function and its speed. In the deep ocean, tsunami waves can travel at speeds of 500-1000 km per hour.

Bali is a small island in Indonesia, which is surrounded by a very large ocean. To the south is the Indian Ocean, to the north is the sea belongs to Indonesia. Bali Island is also part of a cluster of volcanoes that stretches from north to south. That is why Bali has two volcanoes that are still active to this day, Mount Agung and Batur. Bali Island is also located on the fault lines are constantly moving tectonic plates. That is why in Bali frequent earthquakes. Almost every day there was an earthquake, but not felt by humans.

Tsunami is the greatest threat to the safety of people who live in Bali. Especially those near the sea. From Badung to end Gilimanuk, and Karangasem, including in the red zone prone to tsunamis, except Bangli. Because Bangli has no sea. Bali's southern coast is a red zone or tsunami-prone zones. Because there is a fault in the southern ocean crust of the earth is continually on the move, and can shake the sea water, so it can cause a tsunami.

Currently, Bali has had a Tsunami Early Warning System (TEWS), the tsunami sirens in the red zone six points, such as at Double Six, Seminyak, Kuta, BTDC Tanjung Benoa, Sanur, and Kedonganan. This tool is very useful to provide early warning of a potential tsunami which may occur at any time without predictable.

If a tsunami happens in Bali Indonesia, the region most deadly is Kuta, Nusa Dua, Seminyak. Because these places are most crowded with inhabitants. Also an attraction that is visited by many tourists from various countries. Kuta is a dense region with road traffic congestion always occurs.

Ngurah Rai Airport is also certainly affected by the tsunami. This service is attached at the edge of the sea, even the towering trajectory toward the sea, because the trajectory of the plane in the sea created by landfill.

One way to reduce the harm caused by the tsunami is making a new island in the middle of the sea to block the waves of the sea to the mainland. However, this method is considered costly, and can damage the ecosystem in the sea. Coral reefs will be destroyed, as well as changes in ocean currents that can damage new beaches around the island. Making new island better known as reclamation.

Another way is to make the mangrove forests along the coast of the potentially large tsunami. Mangroves are considered to be very effective in restraining the sea waves damage the land. Planting mangroves also costs less, it's just to start the formation of a vast new forests, requires a very long time.

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