My Favorite - John Gilbert

Lamplugh Glacier

Lamplugh Glacier is about ¾ mile wide, 150 feet high at the face, 10 to 40 feet deep at the waterline, and over 16 miles long. Noted for the intense blue color of it's ice, Lamplugh is fed by the Brady Icefield, which lies east of the Fairweather Range. As temperatures warm, and snowlevels rise, the Brady Icefield accumulation areas appear to be shrinking year after year. Ice flow rates have not been measured but are estimated at 900 to 1000 feet per year. The margin is currently receding by calving in the central and eastern part of the ice face at variable rates we estimate to be around 50 to 100 feet per year. The western third or so of the terminus is grounded, and only at the highest high tides does saltwater reach all but the far western-most edge of the ice face. A large subglacial stream flows from the central part of the terminus, often creating large caves in the face of the glacier. Such subglacial streams discharge large volumes of sediment-rich water into the fjord, filling the small embayment at the ice edge with brown to tan milky water. Since 2010, outwash has built up extensive mudflats along the entire face of the glacier.

50G3029

From Alaska 2018