Associate scientist Fiamma Straneo, from the physical oceanography Dept at Woods Hole Oceanographic Institution, deploys an expendable bathythermograph or XBT which is fired through the loose ice debris into the fjord below. Data concerning temperature and depth is recieved through a thin wire which links the device with the helicopter. The Greenpeace ship Arctic Sunrise, its crew and a team of independent scientists are at Nioghalvfjerdsfjorden Glacier (known as '79 Glacier') at 79 degrees north, in remote northeast Greenland, to study the effects of climate change in the Arctic, and its influence on sea level rise worldwide.