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In search of an undersea kelp forest's missing nitrogen（图）
undersea kelp forest missing nitrogen
2019/10/28
Plants need nutrients to grow. So scientists were surprised to learn that giant kelp maintains its impressive growth rates year-round, even in summer and early fall when ocean currents along the Calif...
Clues to future of undersea exploration may reside inside a jellyfish-like creature
future of undersea exploration jellyfish-like creature
2015/10/13
Siphonophores, they're called: Marine animals that navigate inner space like undersea mini-versions of the starship Enterprise.Most siphonophores are long, thin, transparent floaters. At 130 to 160 fe...
In 1957, the North Atlantic Treaty Organization, inspired by recent developments in the Cold War, recognized the need to develop collaborative efforts in science and technology to improve national eff...
Project 20 Low-Frequency Active Sonar: The Successful Union of Oceanographic and Systems R&D Disciplines at the NATO Undersea Research Centre and Elsewhere
Oceanographic and Systems Elsewherev
2015/7/20
This paper documents and illustrates how the original SACLANTCEN/NURC (Supreme Allied Command Atlantic Undersea Research Centre/NATO Undersea Research Centre) project initially known as the Active Adj...
This special issue of Oceanography takes a look at a variety of undersea natural hazards—hazards resulting from natural processes such as earthquakes, tsunamis, volcanic eruptions, and landslides. The...
Chasing Science At Sea: Racing Hurricanes, Stalking Sharks, and Living Undersea with Ocean Experts
Racing Hurricanes Stalking Sharks
2015/7/3
All marine scientists who work in the field have them—personal stories of amazement, discovery, awe, excitement, and even danger while conducting research. They are the stories we love to tell to frie...
What’s it like living on the bottom of the ocean in a habitat no bigger than a school bus for more than two weeks? Nicer than you might think, according to Grace Young ’14.
40G Field Trial with 0.8 bits/s/Hz Spectral Efficiency over 6,550 km of Installed Undersea Cable
Undersea Cable Field Trial Spectral Efficiency
2015/5/18
We successfully demonstrated 64x40Gb/s transmission over 6,550km installed undersea cable using SubCom’s 40G transceivers. More than 3.3dB FEC margin for all measured channels was achieved matching ou...
The Capabilities of the Undersea Telecommunications Industry
The Capabilities Undersea Telecommunications Industry
2015/6/9
Undersea transoceanic telecommunications cables are routinely installed with multiple terra-bit capacity. In this presentation I will give an overview of these state-of-the-art systems,discuss key tec...
Faults and Recovery Methods in Regional Undersea OADM Networks
Faults and Recovery Methods Regional Undersea OADM Networks
2015/7/17
An experimental study of faults in an important class of undersea OADM networks demonstrates that channel performance through surviving segments can be recovered by the terminal-based procedures enabl...
Modulation Formats for Ultra Long-Haul Undersea Transmission
Modulation Formats Ultra Long-Haul Undersea Transmission
2015/7/16
This paper reviews recent technology advances in modulation formats including RZ-DQPSK, PDM RZ-DPSK, and offset PDM RZ-DPSK for 40G undersea transmission. Research activities on 100G long-haul transmi...
Estimation of oxygen uptake from heart rate response to undersea work
human Oxygen Consumption cardiac undersea work exercise ergometer human
2009/7/15
The efficacy of using a diver's heart rate (HR) response to work performed formed in the open sea to estimate the oxygen uptake (VO2) and work stress by general and depth-specific regression equations...
Safety considerations in undersea life support
DIVING safety equipment LIFE SUPPORT SYSTEMS
2009/5/27
Undersea life-support responsibility has not yet been clearly defined in available
diving literature. Consequently, full understanding of the scope, problems and
gravity of such responsibility somet...
G Fahlman of Taylor Diving and Salvage spoke on
“The Achievements and Plans of an Oilfield Diving
Contractor”. Taylor Diving have a name for underwater
welding. They use bell type habitats which fi...
A summary of the Undersea and Hyperbaric Medical Society Near Drowning Workshop.
Drowning near-drowning near drowning Incidents Accident Treatment
2009/5/13
A summary of the Undersea and Hyperbaric Medical Society Near Drowning Workshop. The Undersea and Hyperbaric Medical Society (UHMS) Workshop on near-drowning was held in 1997.