communications are struggling. the prime minister of new zealand said there was a thin film of ash everywhere. the column and the umbrella cloud produce was at least 200 kilometres wide so it is fully covered with ash. but the tsunami is probably the biggest impact and that has been propagating across the space across the bill specific including japan and the united states. that is causing some damage. not anything as bad as perhaps we saw in the eruption of crack and how about two years ago, which had a much bigger local impact, but still it is a tsunami which is interesting. the tsunami process and what produces the tsunami is really interesting. i m sure we ll find out, but at the moment it is not clear whether the tsunami was because between the collapse of material underwater or the shock wave itself. producing a