米アラスカ湾タンカー座礁：２０年前の流出原油、残存 Long-term contamination in Alaska

米アラスカ湾タンカー座礁：２０年前の流出原油、残存
Long-term contamination in Alaska : NPG Nature Asia-Pacific
il spilt from the tanker Exxon Valdez in 1989 can still be found on the Alaskan coast because of the two-layered structure of local beaches, according a study online this week in Nature Geoscience. As oil exploitation and shipping in the Arctic region becomes more feasible owing to global warming, effective environmental protection and clean-up of spilt oil will become increasingly important.