Page 36 - Pinger News Today : Breaking News, Live Updates & Top Stories | Vimarsana

The bluefin-21 is deployed? the underwater drone? how small would you like that search area to get? >> in an ideal search if we're getting a steady signal from the pinger, we would continue to use the tpl until we narrowed that search area to where we were confident we could triangulate to within a couple of hundred yards. >> couple of hundred yards, right now they're at a thousand square miles. >> the tpl is the tool to tell you where to begin your search. and at that point you would move out to find out the boundary of the wreckage field. >> is there a potential role for the private sector i...

Properties of the seawater and other geological obstructions or debris. the pinger could actually be tucked in under a piece of debris. it could be channelling the sound away in one direction. also, the sound under water can be tricky. the sound wants to always bend toward the area of the least sound velocity. so after you get near the surface of 1,000 feet, these can wreck havoc on your acoustic signals. if you are directly above the device, you have no angle of incident. you can go straight through the layers. if you are just a little bit off one way or the other, it can really wreck havoc o...

Between the top and bottom. by some theories, particularly with lower sounds, it may go many, many, many miles before it comes out. this may explain why a pinger that shouldn't be heard more than three miles away is being located at a range of some 17 miles. as it's coming up, it's possible that these anomalies, these strange things that happen to sound in deep water are affecting that signal. and they've got to overcome that and crush it down to the actual location before they go under water and start mapping very much. victor, christi? >> wow. it's marine science lesson for all of us. tom fo...

My question. >> as they proceed through the search area, they are towing this device behind them and trying to triangulate the signal. as fred said, you could have a lot of things going on with the sound properties and acoustic signatures of that device. there are a lot of things. we don't know what is going on at those depths. >> mr. patel, the battery is at the end of the life span. what is the longest your product can survive beyond 30 days? i understand you have a fix for this that could take it to 90 days. please explain both of those. >> this is the standard pinger of 30 days similar to ...

Characteristics of deep water. and they present some real challenges. among them, something called the sound fixing and ranging layer. this is about a half mile down. it's a naturally occurring portion of the water where sound travels less quickly than it does below or above. a lot of different reasons. the salinity level, water temperature, and this is the result. sometimes because of this layer, a sound that may come up out of here can hit that slower area and be bent at a very substantial angle, so when it emerges, it's quite different from where you would expect it to be. in other cases, s...