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A short baseline (SBL) acoustic positioning system [1] is one of three broad classes of underwater acoustic positioning systems that are used to track underwater vehicles and divers. The other two classes are ultra short baseline systems (USBL) and long baseline systems (LBL). Like USBL systems, SBL systems do not require any seafloor mounted ...
A long baseline (LBL) acoustic positioning system [1] is one of three broad classes of underwater acoustic positioning systems that are used to track underwater vehicles and divers. The other two classes are ultra short baseline systems (USBL) and short baseline systems (SBL). LBL systems are unique in that they use networks of sea-floor ...
While the erosion process of turbidity current erosion which once carved out the submarine Monterey Canyon is well known, the cause of the great depth and length of this canyon, obviously carved out millions of years ago, and the unusually large size of the sedimentary deposit (fan) at its underwater mouth 95 miles West of Monterey, have all been a cause for some speculation.
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The heart of the sanctuary is Stellwagen Bank, an underwater plateau stretching 19 miles (17 nmi; 31 km) north to south, and 6 miles (5.2 nmi; 9.7 km) across at its widest near its southern end. The bank is, on average, 100 to 120 feet (30 to 37 m) below the surface, while surrounding waters to the west are over 300 feet (91 m) deep and to the ...
In underwater diving, ascending and descending is done using strict protocols to avoid problems caused by the changes in ambient pressure and the hazards of obstacles near the surface such as collision with vessels. Diver certification and accreditation organisations place importance on these protocols early in their diver training programmes. [1]
Strength training. She combines all that swimming with strength training.She says that she gets in the weight room twice a week for 30 minutes each time, with a primary focus on her shoulders and ...
Unexplained changes in cholesterol may be associated with a higher risk for dementia, new study shows. Researchers found people with stable cholesterol levels had a lower risk of developing ...