In 2009 , the icebridge team used a gravimeter to map out the shape of the ocean floor beneath the pine island glacier . Their measurements revealed a deep channel under the glacier tongue through which warm water could flow .

在2009年，冰桥小组用比重计测出松岛冰川下面海底的形状，结果显示在冰川舌下有一条很深的隧道，暖流正是通过它涌出来的。