frederick till now he s head of seismology they have a whole set of pots down jaffa said which supplied indonesia s system a welcome to g.w. what went wrong. so we re trying to see i mean the warning system depends on many millions of the chain so the beginning of a seismic sensors would pick up a signal from the earthquake the drone shaking from the earthquake and then they make a location and determine the magnitude of the of quake and then based on that information within five miles of you have quick occurring the one sentence you need to have a beacon k.g. has to decide to see of warning they did issue a warning for was of quake based on its size. and then it is up to in the way of local authorities in the different islands to evacuate people and get them off the beaches and it seems from the reports that at least in some places this last element of giving the warning and locally failed so it was as far as you can tell the system the you provided worked you say the base that went w