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because you have to use models that are using data. but there is always some area that propagates and creates some uncertainty that becomes bigger and bigger with time. >> luca, chris, thanks so much for your information here. i appreciate the insight tonight. and we'll be right back with a great story, everybody. don't miss it. on my journey across america, i've learned that when you ask someone in texas if they want "big" savings on car insurance, it's a bit like asking if they want a big hat... ...'scuse me... ...or a big steak... ...or big hair... i think we have our answer. geico. fifteen minutes could save you fifteen percent or more on car insurance. and better is so easy withrning you cabenefiber.o something better for yourself. fiber that's taste-free, grit-free and dissolves completely. so you can feel free to add it to anything.
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and it is in fact the wing. how big is the search area in something like this? >> well, it depends on what the ocean is doing at that time. the ocean is mainly doing two things. it is moving in a main direction, so direction that the currents are going. the other thing is that because currents are not the same at all locations and there is also wind effect and waves effect obviously will start to dispersement and that will create a cloud of debris this spreading out. and then you have to do two things. first you have to locate something, and then you have to track it back. and every time you do a track back operation, you are going to introduce an error. because you have to use models that are using data. but there is always some area that propagates and creates some uncertainty that becomes bigger and bigger with time. >> luca, chris, thanks so much for your information here. i appreciate the insight
though. >> yeah. maybe they're down there and they just don't want to tell us that sort of thing. and luca, explain that cone of uncertainty again and how big it might actually be. let's say they find that piece and it is in fact the wing. how big is the search area in something like this? >> well, it depends on what the ocean is doing at that time. the ocean is mainly doing two things. it is moving in a main direction, so direction that the currents are going. the other thing is that because currents are not the same at all locations and there is also wind effect and waves effect obviously will start to dispersement and that will create a cloud of debris this spreading out. and then you have to do two things. first you have to locate something, and then you have to track it back. and every time you do a track back operation, you are going to introduce an error.
would be a lot smaller than looking for an aircraft carrier, which in itself was very difficult. so the task of finding the airplane wreckage is going to be daunting for these searchers. >> i know that chuck hagel, our secretary of defense, is requesting hydrophones, i guess towable underwater listening devices maybe to hear the ping of that box. but for a land lover like me this is probably a dumb question. and my ignorance is obvious in this. why not send submarines down there to listen? >> that's a good question. they are very sophisticated listening arrays. they could probably work for that. that's not my area of expertise, though. >> yeah. maybe they're down there and they just don't want to tell us that sort of thing. and luca, explain that cone of uncertainty again and how big it might actually be. let's say they find that piece
answer. joining me captain chris curl on board the research ship melville. also joining me is luc luca santorini of the scrips oceanographic institute. captain explain in your experience the difficulty of these waters and a search this size. >> well, the difficulty in general is connected with how objects disperse in the water. so the the more time goes by, the more the objects spread out and the more difficult it is to find them, which is step one. then step two is to track them back to the site of the presumed crash. so we have a great coverage globally. that's the way which is essentially founded by noaa. what we have here, you can see west of australia we have -- the
data real time to anyone who can make use of it. so all the operation agencies that can do weather forecasts are able to use our data. >> let's see this thing in action. >> so here how we can deploy, it's very easy. they can be either from the airplane or one person can deploy it from the ship. basically you just throw it overboard and the drifter starts the mission automatically. here it goes. >> and this is going to be pivotal. this kind of device in helping crews figure out drift patterns, so if they do find any debris from flight 370 it will help us out. we'll check back with you, luca. we appreciate your live experiment with us. when we come back, more on that transcript. 54 minutes of messages from the cockpit. are there any clues? we'll dig in next.
so if they do find any debris from flight 370 it will help us out. we'll check back with you, luca. we appreciate your live experiment with us. when we come back, more on that transcript. 54 minutes of messages from the cockpit. are there any clues? we'll dig in next. [ coughs, sneezes ] i have a big meeting when we land, but i am so stuffed up, i can't rest. [ male announcer ] nyquil cold and flu liquid gels don't unstuff your nose. they don't? alka seltzer plus night fights your worst cold symptoms, plus has a decongestant. [ inhales deeply ] oh. what a relief it is.