Word: seafloor
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Professor invents microbe fuel cell A Harvard professor has invented a method for generating electricity from seafloor microbes and garbage, which could provide a cheap way for developing countries to power themselves. Peter Girguis, a assistant professor of organismic and evolutionary biology, developed a fuel cell with a grant from the Lindebergh Foundation. These microbes produce extra electrons when they respire anaerobically. Girguis’ invention contains electrodes which gather these up, producing enough power to charge an LED lightbulb. One bucket costs about $15 and is estimated to last 15 years...
...week's earthquake cause a massive tsunami? A: The earthquake ruptured some 30 km below the ocean floor, significantly deeper than the Dec. 26 quake, which was only 10 km deep and in shallower waters. All that earth muffled the force of last week's quake and kept the seafloor from rising suddenly, which could have triggered a major tsunami. "There just wasn't a big enough bulge in the water to create a big set of waves," says Kerry Sieh, a seismologist at the California Institute of Technology. Some minor tsunami waves were generated, according to computer models...
...from that of the first quake. But while the Dec. 26 earthquake ruptured the earth in a line that extended more than 1,100 km to the north of its epicenter, the force of the March 28 temblor broke in the opposite direction, rupturing a 400 km stretch of seafloor to the southeast. Because its energy spread in a new direction and because of its magnitude, last week's quake could be an independent event, albeit one that was heavily influenced by the Dec. 26 earthquake...
...These walls off Selayar can be explored solely by scuba divers. The seafloor starts its descent to the continental shelf a few meters below the waves, then rapidly turns vertical and beyond the reach of even the most deep-lunged of snorkelers. The sensation during that first wall dive is somewhere between giddiness and terror. Floating above an abyss populated by the flickering forms of deepwater sea creatures takes some getting used to, but distractions abound. The wall is covered with a moving mosaic of fat, brown sea cucumbers, vivid corals, shrinking anemones and tiny, glittering fish. The deeper...
...sinkings, would not answer. But he told a little parable: One day in the last war he had flown over the Bay of Biscay in a French blimp. He had taken the controls himself for a bit. The next day the blimp thought it saw a submarine on the seafloor near Penmarch Point, where a U-boat had periodically attacked shipping entering the Loire's mouth. The blimp put down a buoy. Airplanes and sub-chasers dropped depth charges. An oil slick showed, but the Allies did not claim a submarine. After the war divers went down off Penmarch...