there s been storms in this part of the ocean, which will change the salinity and the surface temperature. you might get a difference in temperature between a lower layer and an upper layer and a difference in salinity, in density. and this would affect the path of sound waves. and so the two ping signals could very well be coming from a signal source. and with all the errors adding up, they seem to be very far apart. but if you re going to look some place, this is sure a very good start. yeah. jeff, we are learning tonight that the pings detected by the ocean shield, as bill nye was just referencing, were actually at 33.3, where he said you may get a different temperature, right? a lower standard than the standard beacon frequency of 37.5 kilohertz. that s according to the pinger manufacturer. do you think this could still be the black boxes in your estimation, even at these different temperatures or different rates? there s a lot of problems with this pinger data.
used by bringing in more evidence on the radar tracking of this aeroplane. and the location is exactly on this track that the ships were told to go and have a look at. so there s some supporting evidence that, yes, they are the black boxes. we listened to this press conference live from angus houston, paul. you were optimistic about this, but now cnn is hearing that the frequency detected was 33.3 kilohertz, not 37.5. do you still believe that these are, in fact, the pingers, and is it an exact match? is 33 that close to 37? okay, we re talking about 10%. and we had a discussion this evening before air about the effects of temperature gradients on the transmission of different signals through water and the effects that can have with respect to frequency of signals.
that we made before now it s two miles and they seem like just as cautiously optimistic. what am i missing? well, you know, i m with you. if you got the pings and the pings really were from the black boxeses and they have two different ones so it would be from the two black boxes and certainly they recorded the latitude and longitude of where they were when they got the pings and they had them for one of them for two hours, so to go back there, but they tell us, the oceanographers, tell us at even at a three-mile radius, the ocean is a big place, it s going to take a while to map the ocean floor. they wanted to zero that in. certainly they are the best that we ve had in the entire investigation. it s pretty good to us from those on the outside looking? then you heard these on 33.3 megahertz, david, not 37.5. that s still close enough. we feel like we re still pretty
that one location, which is the north side of a feature called the wallaby plateau. i think that s a great place to start in an underwater map. they should work outwards instead of worrying about how big that area can be. what do you make of the discrepancy and frequency? the numbers keep getting all scrambled up in my head. but it was 37.5 and it s 33.3 or something along tohose lines. the frequency it was supposed to be from the manufacturer, what they were picking up yesterday, not the same thing. does that trouble you or does that seem like something in the realm of possibility given the conditions down there? it did trouble me, but cnn analyst david soucie has convinced me that that s a normal drift as batteries wear down and time goes on. we could drift into those different frequencies. it s almost like riding down the road and with the old radios
pings detected by the ocean shield ship were actually at 33.3 kilohertz. that s a lower frequency than 37.5 kilohertz. does this mean this can t be the plane or is there some other explanation and it still could be? it definitely still could be. what you have with the pinger frequency can be affected by temperature of the water, the depth, the pressure, the current and actually the battery life and actual orientation of the pinger on the floor. all those could affect it. so definitely could be. chris, just to follow. we were told that the batteries on these beacons would be out of juice by now, they only last 30 days, obviously it s been 32. how could that explain the change in frequency and do these batteries ever last longer than 30 days? well the batteries are required to last 30 days even if they are aged or older batteries in there craft.