(2015·徐州市考前信息卷)Scientists from the United States say they have found fish and other creatures living under icy waters in Antarctica. They made the announcement after completing three months of research at the Ross Ice Shelf, the world?s largest floating ice sheet.

　　The researchers hoped to find clues to explain the force of the melting ice and its effect on sea level rise. Reed Scherer and Ross Powell are with Northern Illinois University in DeKalb, Illinois. They just finished up their research on our southernmost continent. Money for the project came from America?s National Science Foundation.

　　“We chose a study site where, in the first year, we went into the subglacial (冰川下的) lake and tried to understand the environment in there, both ecologically and in terms of the ice dynamics about how the lake operates, and how the sediment (沉淀物) underneath the ice sheet operates, as well, because its the water and the sediment underneath the ice that controls how fast the ice is flowing into the ocean.” says Ross Powell, who led the investigation. The team included scientists, engineers, mechanics and technicians. They used tractors to pull electric generators, science laboratories, heavy machinery and other supplies across the ice from the main U．S. scientific base at McMurdo Station to the researchers’ camp. The camp was near a subglacial lake, where an earlier study took place.

　　Ross Powell says the latest study may provide evidence that can help predict the effect of climate change on rising sea levels.

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