$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 are located along the pacific ring of fire where most of the earth's abduction zones are located. in parlin constants in alaska's sent home and for it's a continuing their research and tsunami early warning system was set up here after the 2004 disaster so why were there so many victims in 2018. you know that there are lot 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. this i witness says the crowds in the roads near the beach were caught totally off guard by the wave no warning sounded here. our

investigation continues at the tsunami monitoring center in the indonesian capital jakarta. this control tower monitors seismic activity across indonesia including the bay of power loom. seismologists here can detect any undersea earthquake in real time advanced algorithms allow them to simulate the formation of a tsunami and warn coastal communities before the 1st wave hits since its introduction in 2008 the system has issued 22 alerts saving countless lives. why then did palu fail to receive a warning on september 28th 2018. qian poor innocent he was the seismologist on g t that night i guess that. the earthquake in palo registered

a magnitude of 7 for 2 minutes then just afterward the magnitude rose to 7.7. i instantly ran to the top table where we simulate tsunamis yet the media modeling tsunami the center in jakarta registered an earthquake 80 kilometers north of palm bay early in the evening. and the epicenter is here. and here's palo. according to the simulation the tsunami risk posed by the surface quake was only moderate nevertheless an alert was treated within the prescribe time limit 5 minutes after the earthquake. so what went wrong.

and. cost us in the lurkers will discover the and so with the help of 2 private surveillance cameras. friday september 28th 6 o 2 pm the earthquake hits the bay of power loop it lasts longer than 2 minutes. how did you experience the earthquake it was incredible you couldn't stand up impossible i was there under camera 2 and i was hanging on to the gate and it calmed down and i went out to call she's my cut off. because she show close to the water to try. out the net and they've always said a base of bay a doesn't have tsunamis. that it's in the open sea where there occur you know it happened here it is and that. these images provide the researches

with key evidence on the chronology of events the time on the c.c.t.v. footage reveals that barely 2 minutes elapsed between the end of the earthquake and the onset of the tsunami. such a rapid succession had never been recorded before. the tsunami warning issued in jakarta when town after the wave hit palu when all of its communication systems were already down. what is very alarming to me is that here the earthquake triggered the tsunami very quickly so we need to understand how this happens and also why things the dying

how quickly after the earthquake hits. into the jakarta centers simulations it should have taken a wave generated near the epicenter. north of the bay about 15 minutes to reach palu. how was it possible for this way to advance with such speed and full steam on the bay of palu. to find answers the researches take to the air. 16000000 border glass covered bird's eye view thanks to this being up there to record it allows us to see how history will soon consume the extent of. the scientists are struck by what they see their alternating areas of devastation

and intact notice but that's not all and once you get outside of the bay the wave disappears very quickly and you're looking ever very beautiful indonesian beaches. to can find a zone where to look for further for the sources to inside tibet. the wave that devastated palu had formed out in the open sea the entire coast would have been affected. and fritz and costar sinhala down to the deadly wave. generated at the epi center identified by the jakarta warning center they believe the source of the tsunami must have lain inside the plane itself. and then fritz and he's indonesian colleague. returned to the west coast to gauge how it tsunami could have a region and to be in this sheltered area. paris city has received news footage that was filmed nearby. so i stayed over there. so then you can

see all. these events and then this is when this started just last night. yeah a local landslide no seismic trigger but here is great you have a small semi-circular wave that you can even seen video there so i think this is going to be a localized impact of this landslide tsunami and you have a lot of movement seriously i think once you shake it if you go. home and fritz the low intensity of these 1st wave suggests it was triggered by a coastal landslide but that alone doesn't explain what cools the tsunami that devastated the bank here we have evidence because we have a coastal scar ok so the scar actually is along the shoreline and went into the ocean and so we have a coastal landslide i don't think there's localized tsunamis big enough to be the main source of the tsunami that wiped away. 5 the other side of the bay.

surveying the entire bank researches discover several other similar landslides all of them could have triggered me need tsunamis but it's only when the team looks further inland it finds the missing piece of the puzzle. we want to look this is remarkable this is the trench. tremors opened it and closed it and opened it again with the front door. a few 100 meters further on a 2nd witness points out the extent of the destruction. the entire row of houses collapsed one. of the houses collapsed at the same time from south to north as you can see by the slope of that house there. a deep full line opened up cutscene clear

through the town causing the buildings to collapse it continues on into the bay for many more kilometers. finally researches have the answer it is these fault line that cools the palu tsunami. after 5 days out in the field and months of data analysis the sequence of events has at last been pieced together on september 28th 2018 at 6 o 2 pm a $7.00 magnitude earthquake struck 80 kilometers north of palm. the a.p. center correctly identified by the tsunami monitoring center in jakarta did not directly trigger the tsunami the seismic waves travel through the earth's crust at the extremely high speed of 900 kilometers per hour generating a full to that opened up across the entire bank that triggered landslides all along the coast which in turn generated

a series of mini tsunamis the energy of all these many tsunamis accumulated in the depression of the bank combining to form a powerful wave that swept across the town hermann fritz and cost us in a lock as the investigation has come to an end the reconstruction of the bay of palu tsunami will help improve warning systems all over the world we used to think that tsunamis only areas where you have a subduction zone we now know just like what's happened here that tsunami is going to strike pretty much any place where you're going to have an earthquake we are very concerned about this because similar earthquakes place in seattle they could take place in southern california they could take place in the guardian and grace in the maker and.

watch walls of water wash weans want funda water horrible earthquake water frightening sound of the. and the howling of a great people. these words by the italian poet petrarch described as strange storm over the city of naples in the 14th century. 700 years later vulcanologist now rosie was intrigued by petra it's description rosie has worked on naples emergency plan in case mount vesuvius erupts most tsunamis are generated by sea quakes and fault lines but they can also be triggered by volcanic eruptions if. you want to. track witnessed an exceptional phenomenon that struck the city of make us normal. man he was asleep not far from the port when he heard such loud strange noises that he thought it was an earthquake there were more than

30 or 40 that dr patrick rushed to the harbor like so many other people. and saw with his own eyes that it had been completely devastated last encouraged even. aside from his descriptions of the destruction petra also wrote of hundreds of dead and dozens of sunken ships tomorrow rosie it's obvious that this strange storm was a tsunami. big truck out a level car no people think at that time petra could not have known that it was a tsunami because it was an unknown phenomenon in the middle ages or do we have. today we are certain it was a tsunami and. don't want. to avoid a repeat of the catastrophe the vulcanologist has been searching for the cools of the tsunami that wrecked harbor in 1343 there's no record of a 14th century eruption of mount vesuvius in the gulf of naples. so now

rosie has focused on another volcano located 200. kilometers from naples stromboli he's one of the most active in the region. in 2002 an eruption caused to flank of the mountain to collapse it can see a 10 metre high tidal wave reef to the island. the way to spread across the terrain in sea and much weakened reach the bay of naples. far more powerful eruption of stromboli have triggered the tsunami described by petrarch 700 years ago. above the village of cern vincenzo on the slopes of the volcano archaeologists are a levy is excavating the remains of a small church she's provided moral rosie with his 1st clues.

evan what i mean to the magical we knew that a dramatic event led to the sudden collapse of the building of probably a powerful earthquake because we found large blocks of stone inside on the church floor. in order to date stromboli past activity archaeologists examined 3 skeletons found in the remains of the church. discovered it was in a grave yet it was jog through the layer of collapsed tiles that fell down when the church collapsed so this person was definitely a witness of the catastrophe possibly a victim or possibly a survivor. discovered in has been dated by carbon 14 in the middle decades of the 14th century. the date of the earthquake that shook the island of stromboli coincides with the tsunami disaster described by petrarch in the bay of naples. when the church collapsed it was not rebuilt which is surprising and indicates

a major change in human occupation at this location it is likely that the iowa. it was abandoned until the 1600s. the event was so traumatic that the island of stromboli remained uninhabited for 10 generations and more than 200 years . following these revelations from our own rules he began his own excavations he hopes to find clues linking the activity of the volcano to the tsunami described by petrarch in 1343. more than 4 meters underground the vulcanologist finally discovered an intriguing mix of sedimentary deposits. for the tsunami and this tsunami deposit has by far the largest we found. in we dated 821350 as

evidenced by the materials and. for a look at the size of these perfectly round pebble stones they must have come from the beach. green the presence of such a large sized elements proof of the tsunami was extraordinarily powerful. in their g.s.t. the idea of the vulcanologist it all makes sense the powerful wave that flushed these large pebbles 200 meters inland from the beach occurred at precisely the same time as the earthquake that destroyed this small island church there is a clear link between the eruption of the volcano and the tsunami. it's on the scene pressie flank that all the volcanic material ejected by stromboli accumulates 700 years ago an eruption may well have sparked a landslide on the share of. that would have held many millions of tons of

accumulated debris into the sea triggering the tsunami that reached the bay of naples but as we would maintain a strong body given strong bullies. current activity we believe the load of debris presently accumulated on the shuttle for call is comparable to levels of the time of the tsunami described by petrarch. even. from our own rosie the landslide caused by the 2019 eruption was just a harbinger of a much more serious disaster to come the shower adele full co he says could collapse into the sea at any moment. beyond of stromboli is under 24 hour surveillance to alert authorities residents and tourists in the event of danger. but what consequences would it tsunami have on a city the size of naples in a bottle of o.c.

dockett you see our pool tsunami also from here and these people are completely unaware that a tsunami from from bali could hit naples c.s. and it is a quandary phenomena. and in the case of rare natural phenomena well it's too late then people tend to believe that there is no imminent danger since at sea on a kick a socio videoing. a computer generated model tracks the kools of the 1343 tsunami it gives an idea of what could be in store for naples. florida but all venice he made this all the in time you know the he would take under 30 minutes for the tsunami to reach the gulf of naples from stromboli all for the now only aimed at. the devastation would be unimaginable could be the really for the markets it could be the hour when all the boats in the harbor behind me would be hurled onto the streets speak the current bill is that it. the water would

gush into the subway and drown all of the passengers off. the busy streets would be submerged. it would be apocalyptic. scene but that's exactly what happened without an early warning system of these. earthquakes landslides volcanic eruptions all of these natural phenomena can triggered tsunamis. research carried out over the last 15 years has provided a better understanding of the threat it's also helped perfect warning systems and better adapt them to the specifics of each risk zone. the technology is most advanced in japan a country at the forefront of tsunami science. research is here feel they know

exactly what will cause the next disaster. these images are from a government awareness raising campaign broadcast in march 2800 aim to prepare people for a tsunami that scientists say has an 80 percent probability of occurring within the next 3 decades. the film explains how people should react but also predicts the likely scale of the disaster with 350000 victims and infrastructural damage impacting the japanese economy for at least 20 years because a rupture of the unkind truck a 900 kilometer long ocean floor trench along japan's west coast. troth the threat of the 9th i trust is very specific because all the economic centers of japan whether tokyo or soka we're not going to go far in all. areas.

today there is no technology that can predict earthquakes but japanese scientists have developed a monitoring system to warn the public the moment a seismic wave is registered. he says we need to be able to detect movements as soon as possible and then issue a warning if that's what the darn it system does just right outside the bay of all suckers like. the don't it system is the most sophisticated seismic detector in the world $29.00 small underwater observatories equipped with precious sensors and seismometers and excel or all matters are installed directly on the full line off the coast of osaka issues an alert with the very 1st tremor the tsunami. it would take 3 to 5 minutes for the tsunami to reach the 1st cities with waves 20 to 30 meters high they sweep into osaka bay and flood parts of osaka incog.

the artificial islands would be the worst hit with waves of 3 to 5 meters after 30 to 45 minutes. to develop effective evacuation plans and tested protective walls the disaster prevention center at kyoto university simulates the effects of an earthquake you know pool. we're almost certain we'd be dealing with a magnitude 9 earthquake. and that it would cause a tsunami. warning us. here at ease she has model b. arrival of a wave with an average height of 20 meters that's the equivalent of a 6 story building in a city directly facing the name control. seawalls would weaken the waves the impact the protect. barriers would quickly become submerged under several meters of water

. the simulations are supplemented by computer models they've allowed to hear a cheese team to predict the path of the tsunami would take in tokyo bay. although it's 5 kilometers inland the district around the olympic stadium could be buried under a 9 metre high wave. of what i got there used simulations are carried out to identify hazardous locations. though for example a road that would flood quickly is not suitable as an evacuation route. to the entrances to many buildings would be blocked by water so they offer no shelter but this day we get do it tonight will. kyoto university has used the simulations to create an interactive evacuation plan in an emergency an app shows

the progression of the waves and identifies the nearest safe zones. one of the that if we get information on our cell phones and on the internet is that same television stations also broadcast warnings with instructions on what to do to get to safety security. saving lives is key but scientists also want to minimize structural damage. the tsunami of 2011 once again showed that harbor areas are extremely dangerous places to be touring a tsunami which transforms ships into giant projectiles. put hero turned on her she moto of kobe university the harbor is a priority evacuation zone. i want to know that the state that

osaka bay is very busy during the day. at any given time there are 30 to 50 boat sailing there. and we have no guarantee that in the event of a tsunami a situation that many have never experienced everyone would keep their cool and the ships would have accurate one after another in an orderly fashion. and that's why we're developing an intelligence system to evacuate ships automatically. despite technological advances japan is seemingly living on borrowed time all sucka a city of 8000000 inhabitants and the country's 2nd largest economic center is built on low lying flat lands it's surrounded by hundreds of kilometers of protective walls. of yours. there are the 2011 earthquake weakened all the walls. parts of the barrier

collapsed so it wasn't offering effective protection before the tsunami arrived yes no need to these efforts. to date even the most sophisticated technologies cannot predict earthquakes these artificial islands have apartment blocks shopping centers and petrochemical plants. public education and emergency management can reduce the number of fatalities in the event of a tsunami. we often feel like we've tainted nature but time and again nature proves us wrong. around the world tsunami research has made great strides but every new design step puts the technologies devised to protect us to a new test. if we're building our

plans hospitals public buildings houses in areas where there's a higher house or we have i've been layers and layers of them in every living and with daryn what we're finding out on the world is that our ringer ability for disasters keeps increasing and so the. waterfront living has an enduring appeal but the unchecked urbanization of coastal communities is a recipe for disaster. even with increasingly sophisticated technologies and early warning systems a plain common sense to our understanding of nature is more important than ever. and we say this worldwide if you are near the coast and you feel any guy on the ground shaking that lasts more than 15 seconds and move away from the beach.

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this is the w. news live from perth in another attack at a church in france french police arrest a suspect after an oath of office priest is seriously wounded in the southern city of new york city's mayor says the motive for the shooting is not not also coming up . violence was voting in the ivory coast the current president of the west african nation is hoping to secure a 3rd term on the opposition site that's unconstitutional will get the latest from our correspondent on the corrupt.