Mike Name your preferred amplitude and the vessel controller will try to deliver it at the right phase and period. Quite small inputs can drive coupled oscillations, especially ones with irregular periods.
Stephen Emeritus Professor of Engineering Design School of Engineering and Electronics University of Edinburgh Mayfield Road Edinburgh EH9 3JL Scotland tel +44 131 650 5704 fax +44 131 650 5702 Mobile 07795 203 195 [email protected] http://www.see.ed.ac.uk/~shs Mike MacCracken wrote: > On 8/8/09 6:48 AM, "Stephen Salter" <[email protected]> wrote: > > >> If we do not like the results of a treatment pattern that replicates el >> Nino then we move the flotilla to the other side of the Pacific to get a >> controlled amount of la Nina. My own view is that a steady state is >> usually better than an oscillation and I would like to position vessels >> to apply a bit of damping. >> >> > Dear Stephen--On the question of steady state, for the Pacific region > undergoing El Nino/Southern Oscillation, I would venture to say they depend > on the oscillation, and steady conditions would be a real disaster, over > watering some regions and underwatering others (or are those words > synonyms?)--giving too much precipitation too consistently and too little to > others, also too consistently. Given the size of the region and the amount > of precipitation, the only way to get enough to virtually everyone is for > there to be an oscillation. > > Best, Mike > > > > > > > -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en -~----------~----~----~----~------~----~------~--~---
