and seriously wounded we'll have more on that in the out next bulletin ok more news at the top of the hour coming up next a film documentary about tsunamis don't forget to get all the lights news and information around the clock on our website at state of the dot com you can also follow us on twitter and instagram as well the handle there is at a deadly news american help from them that's a good and switch. and you hear me now i guess we're going to tell you and how the last year's general sounds that were ringing i'm glad cause you've never had to have surprise yourself with what is possible who is magical really what in lose fat and what. sorts of people who followed her along the way maurice and critics would like to join us from applesauce tots.

tsunamis deadly waves that have the power to destroy entire cities in a matter of moments. there was little public awareness about them until december 26th 2004. that was the day a gigantic tsunami in the indian ocean killed more than 250000 people images illustrating the pools of these natural phenomenon shocked the world. 7 years later in 2011 a nuclear power plant in fukushima japan exploded after being engulfed by an earthquake generated tsunami. since these tragedies scientists rushed to the scene redoubling efforts to determine what causes these killer waves. because that knowledge can save lives it's clear that tsunamis can strike any region. the planet

open eyes ation has made coastal communities even more vulnerable. than tsunami research protects them. to hate. it was doing a. half . on friday september 28th 2018 an earthquake followed by a tsunami devastated an area of the bay of palu on the indonesian island of slow way sea. within minutes 4000 people lost their lives 79000 others had to be evacuated how could this new design stay in indonesia

occurred after the devastating 2004 tsunami 2 tsunami specialists were commissioned by unesco in the indonesian authorities to investigate cost us in our lockers at the university of southern california and hermann fritz of the georgia institute of technology have arrived to conduct field research. quite impressive to see the devastation. there now 3 weeks after their end. everything can i say why it's important to come up as quickly as possible or at least once to emergencies over because a lot of bulldozing in this area already so a lot of evidence is very lost. the researches will be combing the debris for traces of the wave time is of the essence cleanup operations have already arranged valuable evidence and the monsoon rains a jew to start soon. working

as a tsunami scientist is very much like being a detective on a crime scene there's a multiple murders have taken place and you really have to piece like in the bottle this sequence of events. they did tsunami hit 1st and this made the houses collapse or where they collapsed because of the earthquake or tsunami from the system or what were the people doing why is it that some people died and some people did well . the 2 researches want to determine how the designs to run folded big goal to trace the tsunami back to the of into the trick at the way. his goes to meet survivors in this small fishing town of one e. . when the wave heat pump do look tif was on his boat

100 meters from the shore. then. get off the boat. when the 1st wave came in there was a big trauma and when i'm on technical work that he got up and you feel the tremors on the boat i mean you're out yes the whole boat was rocking out because the water level had dropped and the boat had run aground. or they stayed with the boat. did you stay on the boat you want to get up on the news or is it my thing i've got to hold on to the national. ok and then i saw the way of approaching in the distance to jump up scarlett was very fast so. it reached the boat in no time at all and pushed us onto land. but up roughly how high wasn't that is something i could see my house. was almost at the same height as the boat how. was your house

or they're having the way it was about 5 to 6 metres higher as high as my house. close to assume because he's puzzled how could a 5 metre high wave have crashed onto the shore here in a baby that up until now had not been seen as a tsunami hazards on. 20 kilometers south of one e common fritz's conducting research in part. tucked away at the back of the bay the town is home to 350000 residents thousands of people lost their lives here. accompanied by 2 indonesian colleagues and then fritz drives to the parking lot of a shopping center overlooking the bank of his investigation into the dynamics of the wave relies heavily on videos from mobile phones this is the exact thought that

i direct we saw on the feed you know you can see the billboards yet. another wave coming people running away people running away. and that's the 2nd word i can read their eyes. now we can basically see how high the water is almost the billboard. the waves reached a fine tooth more than 4 metres. to determine the kools of the tsunami herman fritz 1st needs to create a computer model of the devastating wave for this he has to determine its height at

different points in the city and measure how far it spread in land i tried this in detail surveying years to begin to try to get it to 3 d. stamped and the purpose of that is to figure 3 d. space based the lidar stands all the points and we can see how the wave goes through it so if you measure how high the wave reason every given instance and how fast the wave is moving across the through the houses washing away the houses and across the street. human free to follows the waves traces after flooding the parking lot its whips deep into the sea incidents of the force of the wave can be found in these most located just 100 meters from the shore. that's why we have this grail here and we see this raft of debris inside so we know that the tsunami was at least to this height of this rock and then up here we see the actual primary tsunami lying which is this one right here and we can also see

in the window if you look at the blue sky we actually see a modeling going through there and then we look at that over here we also see them on line coming around coming around coming around so that tsunami is coming pretty much at the height of my head through this mosque. and that's also very difficult to hide already because usually when the water is to this height you cannot stand any more you will be thrown to the ground by the water so can be difficult to see what. after 3 days of field work the 2 american researches and their indonesian colleagues can now produce their 1st simulation of the tsunami that hit the bay of palu. they established that the strongest wave caught up path 300 meters inland but caused us you know luck is and hermann fritz are only at the start of

their investigation they now have to identify the events that triggered the deadly wave and find out how it could have swept into the bay. soon means the port me the way the waves the destroy the ports and. these words now in universal use dates from the 17th century it comes from the place on the planet most frequently affected by tsunamis japan. it was coined by fishermen when returning to shore on a storm free day they discovered the waves had leveled their villages. act the last tsunami to hit japan caused the fukushima nuclear disaster in 2011 it was triggered by a sea quake measuring 9 point one on the richter scale. the wave killed more than

18000 people i've seen them enough or can cause a tsunami has no meteorological cause that's the primary cause of tsunamis are earthquakes and sea quakes. the vast majority of tsunamis are generated by sea quakes which in turn a triggered by the earth's tectonic activity. the earth's crust is composed of several large plates the movement of magma pushes them against one another a few millimeters. is to a few centimeters a year the oceanic plagues slide beneath the continental plates creating subduction zones. friction between the plates can cause deformation of the continental plate which accumulates a gigantic amount of energy when this energy is released it can cause a huge undersea earthquake.

the earthquake suddenly puts all the water in motion. at a depth of 4 kilometers we have 4000 meters of water is moving at the speed of a passenger plane. or the wave slows down near the coast but increases in size rezone that creates waves like we saw in 201120 to 30 meters high. on them you know. we cannot separate earthquake science and tsunamis science. longer duration of yours great it's a very good indication of how strong. it's basically it's like a zipper if you have a small earthquake it's this short up here area and that means the racially sure it is a bigger is craig lapsley madra. or japan maggots and 9 plus events and basically have

a very long zipper that means the shaking boat go on for several minutes she just crushed that i. mean. the longer and stronger an undersea quake the more powerful the tsunami a treat is as in the indian ocean sea quake of december 26th. 2004. a full located 100 kilometers off banda on the indonesian island of sumatra ruptured along a length of 1200 kilometers the massive 9 point one magnitude undersea quake lasted more than 5 minutes. within 15 minutes the 1st waves up to 35 meters high smashed into sumatra while other

large waves rippled across the indian ocean in all 230000 people lost their lives the waves advance was captured for the 1st time on video by hundreds of people caught up in the disaster. the world was shocked by this devastating show of natural force a force little understood at the time. for scientists it was a wake up call energizing research into tsunamis then still in its infancy. however. since 2008 unesco has maintained a global tsunami tracker it's a record of tsunami occurrences over the past 3 millennia. to date researchers have identified $1200.00 the least destructive are in white the most deadly in red

each of these dots represents a potential danger for the future 70 percent of tsunamis located along the pacific ring of fire where most of the earth's subduction zones are located. in power loom constant see no lockers sent home and for it's a continuing their research at tsunami early warning system was set up here after the 2004 disaster so why were there so many victims in 2018. you know you had to run out of vendors here selling food. it was really busy 1st we heard a rumble yeah but you'll get. the people started screaming the water's rising. the sun i witness says the crowds in the roads near the beach were caught totally off guard by the wave.