A Robot called Benjamin is one of the four wave gliders developed by Liquid Robotics, which has travelled more than 3000 nautical miles from San Francisco to Hawaii and broke the record of travelling the longest distance that any unmanned vehicle has covered so far. The wave gliders were let out into the ocean on November 17, 2011 and they have completed the first leg of their journey across the Pacific and now will be embarking on a more ambitious trip, this time covering 5,000 more nautical miles, to reach Australia and Japan. Each of these gliders has a floating buoy, tethered to an underground winged platform and it the motion of waves that paddles the buoy forward.
Robot Boats Survive Epic Voyage Across the Pacific
The gliders have a subtle design that allows a slow but steady movement, totally powered by wave motion. They use the passive power of the ocean to drift along. Besides they also have solar cells on their deck to provide to their communication equipment, including sensors and transmitters. The sensors measure oceanographic data such as the water temperature, weather conditions, water florescence, water salinity, etc.
The surface vessel of the wave glider measures 7 feet and is connected to the submerged glider, 20 feet deep in the water. The glider has wing shaped panels that tilt up when the craft is lifted by the waves, rising to make the glider mover across water. On a down wave, the wings tilt down , pulling the craft forward and it gets submerged under water, when the wave is too large, moving through it.
The wave gliders in many aspects represent a revolution in robotics that will considerably cut the cost of research and oceanic observation. As already mentioned the wave gliders will soon leave for their new destination in Australia and Japan, they will be required to collect 2.5 million data points on the physical characteristics to further the info for carrying forward research.
Via: Wired
Showing posts with label Pacific. Show all posts
Showing posts with label Pacific. Show all posts
Monday, May 28, 2012
Thursday, November 17, 2011
The island of trash in the Pacific
A "soup of plastic" (plastic soup, as called in English) of floating waste is growing at an alarming rate in the Pacific Ocean. The total area is really impressive: twice the size of the continental part of United States!
The vast expanse of waste - is indeed the landfill of the world's largest garbage - stays instead spinning due to the underwater currents. It begins about 500 nautical miles off the coast of California and across the North Pacific, reaching beyond Hawaii and even near the coast of Japan.
The "island of garbage" is actually not one, but two. I.e., two areas linked to both sides of the islands of Hawaii, known as Western garbage Island and the island of Eastern garbage.
Charles Moore, American oceanographer who discovered the "great Pacific garbage spot" or "trash Vortex" (another name), are about 100 million tons of flotsam that circulate in the region. He is not a solid surface (such as you would indicate the end of "island") but rather of small plastic particles that may be very small, even microscopic.
This occurs because the polymers that make up the plastic materials are disintegrating (separating into smaller elements) but never disappear because the plastic is not biodegradable.
Curtis Ebbesmeyer, an oceanographer prestigious, compares the vortex of garbage as a living being, is - according to-as a large animal without strap. When the animal is approaching the Earth (as does it in the archipelago of Hawaii) results are dramatic, since it leaves the beaches covered this "confetti" of plastic.
Garbage comes mainly (80% estimated) off the coast of United States and Japan. Around of a fifth of the garbage you launch of ships or oil platforms. And according to report those who have traveled the area, the trash includes everything from footballs and kayaks to Lego blocks and shopping bags.
Since the garbage patch is transparent and is located just below the surface of the water, it is not detectable in satellite photographs. Only seen from the bow of the boat.
Activists fighting for the protection of the environment warned that unless consumers reduce the use of disposable plastic, the soup of plastic would double in size over the next decade.
According to the United Nations programme, plastic waste causes the death of an enormous amount of animals: more than one million seabirds each year, as well as more than 100,000 marine mammals. Syringes, cigarette lighters and toothbrushes have been found inside the stomach of dead seabirds, because they confuse them with food.
Learn more about the problems of the oceans in these reports:
The Pacific garbage patch Grand
Two giant whirlpools of Trash in the Pacific Ocean
Easter Island : a man fighting the plastic pollution
The European tuna boats are depleting reserves of South Pacific
View the original article here
The vast expanse of waste - is indeed the landfill of the world's largest garbage - stays instead spinning due to the underwater currents. It begins about 500 nautical miles off the coast of California and across the North Pacific, reaching beyond Hawaii and even near the coast of Japan.
The "island of garbage" is actually not one, but two. I.e., two areas linked to both sides of the islands of Hawaii, known as Western garbage Island and the island of Eastern garbage.
Charles Moore, American oceanographer who discovered the "great Pacific garbage spot" or "trash Vortex" (another name), are about 100 million tons of flotsam that circulate in the region. He is not a solid surface (such as you would indicate the end of "island") but rather of small plastic particles that may be very small, even microscopic.
This occurs because the polymers that make up the plastic materials are disintegrating (separating into smaller elements) but never disappear because the plastic is not biodegradable.
Curtis Ebbesmeyer, an oceanographer prestigious, compares the vortex of garbage as a living being, is - according to-as a large animal without strap. When the animal is approaching the Earth (as does it in the archipelago of Hawaii) results are dramatic, since it leaves the beaches covered this "confetti" of plastic.
Garbage comes mainly (80% estimated) off the coast of United States and Japan. Around of a fifth of the garbage you launch of ships or oil platforms. And according to report those who have traveled the area, the trash includes everything from footballs and kayaks to Lego blocks and shopping bags.
Since the garbage patch is transparent and is located just below the surface of the water, it is not detectable in satellite photographs. Only seen from the bow of the boat.
Activists fighting for the protection of the environment warned that unless consumers reduce the use of disposable plastic, the soup of plastic would double in size over the next decade.
According to the United Nations programme, plastic waste causes the death of an enormous amount of animals: more than one million seabirds each year, as well as more than 100,000 marine mammals. Syringes, cigarette lighters and toothbrushes have been found inside the stomach of dead seabirds, because they confuse them with food.
Learn more about the problems of the oceans in these reports:
The Pacific garbage patch Grand
Two giant whirlpools of Trash in the Pacific Ocean
Easter Island : a man fighting the plastic pollution
The European tuna boats are depleting reserves of South Pacific
View the original article here
Subscribe to:
Posts (Atom)


