Just three months after the tsunami in Palu on the Indonesian island of Sulawesi, Indonesia has been hit by another tsunami, this time hitting the coastal areas on both sides of the Sunda Strait in Java and Sumatra. Hundreds have died and many more are missing and injured. The 14th anniversary of the 2004 Boxing Day tsunamis is only two days away, and we are left wondering what lessons may have been learned. Was there a warning system in place? Did it work? What should happen next? This tsunami appears to have been generated by an eruption of Anak Krakatau, the “child” of Krakatau (sometimes known as Krakatoa), which sits in the Sunda Strait. Reports suggest that a nighttime eruption led to a section of the side or flank collapsing into the sea and triggering underwater landslides. A landslide that starts on the flank of a volcano can produce a tsunami provided that the slide eventually enters the sea and continues as an underwater slide. Other landslides can … [Read more...] about ‘How did the deadly Indonesia tsunami creep past early warning systems?’
Early earthquake warning system
Gregory Korte USA TODAY Published 9:42 AM EST Dec 24, 2018 A devastating tsunami took Indonesians by surprise because an early warning system — designed to detect changes in wave height in coastal areas near an active volcano — hasn't worked since 2012, government officials said. The system uses a series of 22 buoys, tidal gauges and seismographs to alert a network of sirens in coastal areas vulnerable to tsunamis. But Sutopo Purwo Nugroho, spokesman for Indonesia's National Board for Disaster Management, said the system has been crippled by vandalism, damage and neglect. "The absence of this system caused the failure to detect the tsunami in advance," he said. Indonesian authorities updated the death toll to at least 373 people Monday, with 1,459 people injured. And 128 people remain missing, as search-and-rescue crews deal with damaged roads and bridges as they attempt to reach hard-hit areas with heavy equipment. About 11,453 … [Read more...] about Tsunami early warning system was broken before deadly wave
Science & Environment By Mary Halton Science reporter, BBC News 24 March 2018 Share this with Facebook Share this with Messenger Share this with Twitter Share this with Email Share this with Facebook Share this with WhatsApp Share this with Messenger Share this with Twitter Share Share this with These are external links and will open in a new window Email Share this with Email Facebook Share this with Facebook Messenger Share this with Messenger Messenger Share this with Messenger Twitter Share this with Twitter Pinterest Share this with Pinterest WhatsApp Share this with WhatsApp LinkedIn Share this with LinkedIn Copy this link https://www.bbc.com/news/science-environment-43432625 Read more about sharing. These are external links and will open in a new window Close share panel Related TopicsMexico earthquake Earthquake early warning … [Read more...] about Are earthquake warnings effective?
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An early warning system that might have prevented some deaths in the tsunami that hit an Indonesian island on Friday has been stalled in the testing phase for years. The high-tech system of seafloor sensors, data-laden sound waves and fiber-optic cable was meant to replace a system set up after an earthquake and tsunami killed nearly 250,000 people in the region in 2004. But inter-agency wrangling and delays in getting just 1 billion rupiah ($69,000) to complete the project mean the system hasn't moved beyond a prototype developed with $3 million from the U.S. National Science Foundation. It is too late for central Sulawesi, where walls of water up to 6 meters (20 feet) high and a magnitude 7.5 earthquake killed at least 832 people in the cities of Palu and Donggala, tragically highlighting the weaknesses of the existing warning system and low public awareness about how to respond to warnings. "To me this is a tragedy for science, even more so a tragedy for the Indonesian people as the … [Read more...] about Why Indonesia still lacks an adequate tsunami warning system