Study documents rising amount of sea-bottom debris
There’s more direct evidence that plastic pollution is increasing rapidly in the remote Arctic Ocean, according to German scientists, who have tracking sea-bottom litter at two research stations since 2002. The Hausgarten deep-sea observatory network includes a total of 21 stations in the Fram Strait, between Greenland and Svalbard.
Detailed ocean sedimentlayers paint clear picture of link between Arctic sea ice movement and ocean currents
FRISCO — An extraordinarily clear deposit of layered seafloor sediments has helped researchers explain the connection between Arctic sea ice movement and the movement of key ocean currents that redistribute warm water across the northern hemisphere.
German study finds litter on the seafloor in the Fram Strait
By Summit Voice
SUMMIT COUNTY — Underwater cameras used primarily to track ecological changes on the floor of the Arctic Sea have helped German researchers quantify increases in the amount of plastic waste in the region. In some places, concentrations of garbage are higher than those found in a deep-sea canyon near Lisbon, Portugal.
Warmer waters flowing north contribute to loss of Arctic sea ice
By Summit Voice
SUMMIT COUNTY — Ocean temperatures in a key North Atlantic channel are warmer than at any time during the past 2,000 years — well outside the range of natural variations seen in the historic record, according to University of Colorado researchers who were involved in a recent study of the area.
“We know that the Arctic is the most sensitive region on the Earth when it comes to warming, but there has been some question about how unusual the current Arctic warming is compared to the natural variability of the last thousand years,” said Thomas Marchitto, a fellow at CU-Boulder‘s Institute of Arctic and Alpine Research (INSTAAR). The new observations are crucial for putting the current warming trend of the North Atlantic in the proper context, he said. “We found that modern Fram Strait water temperatures are well outside the natural bounds.” Continue reading “Global warming: Key ocean channel heating up”→