Sentences with phrase «head of the glacier»

At both locations, the long - term records show that summer warming has resulted in sustained mass loss, noted Shad O'Neel, head of the glacier research program at the USGS Alaska Science Center.

Robin Bell, a geophysicist at the Lamont - Doherty Earth Observatory at Columbia University, reported on satellite images indicating that a region of four subglacial lakes at the head of a glacier had initiated an ice stream, a fast - moving feature within an ice sheet that carries ice to the sea.

These dramatic changes appear to be the result of a combination of warmer air and ocean temperatures and the topography of the ocean floor at the head of the glacier.

The tsunami was caused by a Megathrust quake with an epicenter at the head of glacier - ringed College Fiord, 75 miles from the town of Chenega.

From the head of the glacier at 1300 m to the mean Equilibrium Line Altitude (ELA) at an elevation of 1050 - 1100 m the glacier flows northward.

Glaciers are not just retreating at the terminus, lateral and even retreat at the head of the glacier can also be substantial.