Smith Glacier is a low-gradient Antarctic glacier, over 160 km (100 mi) long, draining from Toney Mountain in an ENE direction to Amundsen Sea. A northern distributary, Kohler Glacier, drains to Dotson Ice Shelf but the main flow passes to the sea between Bear Peninsula and Mount Murphy, terminating at Crosson Ice Shelf.
The Smith Glacier is located in the western region of Antarctica. Latitude: 75° 2' 59'' S. Longitude 111° 12' 0'' W.
Mapped by USGS from ground surveys and USN air photos, 1959–65. Named by US-ACAN after Philip M. Smith (Smith Bluffs), Deputy Director, Office of Polar Programs, National Science Foundation, who in the period 1956–71 participated in many expions to Antarctica in field and supervisory capacities.
In 2001, Dr. Andrew Shepherd, a research fellow at the Center for Polar Observation and Modeling at University College London, said that Smith Glacier was losing mass quickly and contributing to the slow rise of the oceans.
In 2011, Hamish Pritchard, a scientist with the British Antarctic Survey in Cambridge, UK, said that Smith Glacier was thinning at a rate of 27 feet per year.
In 2016, a study published in the journal Nature Communication, which relied on airborne radar measurements, found that melting of the ice shelves’ grounding zones between the years 2000 and 2009 removed between 984 to about 1,607 feet of solid ice beneath the Smith Glacier. The Smith Glacier lost more ice than any other glacier studied for the report. The researchers found that the Smith Glacier retreated by about 21 miles during the period from 1996 to 2011. The scientists concluded that the size of the retreat was partly a result of both the unique topography underneath the ice that allowed more ocean water to sneak in between the ice and the land below. 
The Smith Glacier, spilling into the Amundsen Sea, shed up to 70 metres (230 feet) per year between 2002 and 2009, according to the study, based on NASA data collected during aerial flyovers.
Using a second instrument on the satellite, one that measures altitude, Dr. Andrew Shepherd, a research fellow at the Center for Polar Observation and Modeling at University College London, came to similar conclusions. A smaller, neighboring glacier, the Smith glacier, is losing mass even more quickly, he said.
Yet according to Pritchard, glaciers along West Antarctica’s midpoint are thinning at an accelerated pace: the Pine Island glacier is thinning by up to 18 feet per year, the neighboring Smith glacier by 27 feet per year, and the Thwaites glacier by 12 feet per year.
The study, which relied on airborne radar measurements, found that melting of the ice shelves’ grounding zones (which is where the ice meets the ocean and becomes floating ice) removed between 984 to about 1,607 feet of solid ice beneath the Smith Glacier alone between the years 2000 and 2009.