Lisa McKeon
Lisa McKeon is a physical scientist who has assisted with a wide array of climate related studies since joining the Climate Change in Mountain Ecosystems project in 1997.
Research Interest
Lisa provides project support for the USGS Benchmark Glacier Project creating outreach products and coordinating historic data preservation efforts.
Professional Experience
Physical scientist, USGS Northern Rocky Mountain Science Center, Bozeman, Montana, April 1997 - Present
Education and Certifications
B.A. Zoology. 1991. University of Washington, Seattle
Science and Products
Filter Total Items: 63
Shepard Glacier 1911 - 2005
Shepard Glacier in Glacier National Park. The red line on the 2005 image illustrates glacier retreat from 1911 to 2005.
Sexton Glacier
Sexton Glacier from bench below Siyeh Pass, Glacier National Park.
Red Eagle Glacier
Although the 2009 photo location does not exactly match the historic photo station, a comparison of relative glacial coverage can still be made. Logan Glacier is in the foreground, while Red Eagle Glacier sits beneath the pyramidal peak that bears the same name. It appears that these two glaciers were joined at the time the historic photo was taken, but recessed into their own basins as time...
Piegan Glacier
Piegan Glacier is one of the few glaciers in Glacier National Park that has not significantly changed since photographed in the 1930s.
Iceberg Glacier circa 1940 - 2008
Iceberg Glacier in Glacier National Park.
Harrison Glacier
While difficult to quantify, this photo pair of Harrison Glacier exemplifies the loss of glacier volume. Comparison of the ice profile in the foreground of the photos shows a marked thinning of the glacier over the years,. Colorful layers of sedimentary bedrock are being exposed as the glacier recedes from the cliff bands.
Jackson Glacier
At the time this historic photograph was taken in 1911, Blackfoot Glacier encompassed the current Jackson Glacier. By 1939, Blackfoot Glacier's recession had resulted in two distinct glaciers, Jackson and Blackfoot. This photo pair shows glacial recession and successive vegetation growth along Jackson Glacier's terminus.
Grinnell Glacier Basin 1936-2013
As Grinnell Glacier retreats, vegetation establishes itself in the newly exposed surfaces. The increase in vegetation along the moraine (center) in this pair is especially obvious.
Grinnell Glacier Basin 1936-2010
Upon close inspection of this photo pair, the viewer can appreciate the change in the volume of glacial ice that has melted from Grinnell Glacier. In the 2010 image, the glacier's terminus can be seen along the edge of Upper Grinnell Lake, a feature that did not exist in 1936.
Grinnell Glacier from Elrod's Rock and terminus
This large boulder was used by Morton Elrod and other scientists as a baseline to measure the retreat of Grinnell Glacier’s terminus. It is now referred to as “Elrod’s Rock,” and the glacier’s terminus is no longer visible from this point.
Grinnell Glacier Basin 1936-2014
A similar view of Grinnell Glacier from the glacier's eastern terminus shows extensive melting and subsequent result, Upper Grinnell Lake. Please respect the photographer: When using these photographs, please credit the photographer and source (eg. T.J. Hileman, courtesy of Glacier National Park Archives). The paired images at the top of this page are examples of proper crediting for each photo...
Grinnell Glacier from North Moraine, 1922 - 2008
View from north moraine of Grinnell Glacier. Image Use Most of the repeat photography images available on this website are in the public domain and may be reproduced without permission. Images with restrictions are noted below the downloadable image. Please respect the photographer: When using these photographs, please credit the photographer and source (eg. T.J. Hileman, courtesy of Glacier...
Science and Products
Filter Total Items: 63
Shepard Glacier 1911 - 2005
Shepard Glacier in Glacier National Park. The red line on the 2005 image illustrates glacier retreat from 1911 to 2005.
Sexton Glacier
Sexton Glacier from bench below Siyeh Pass, Glacier National Park.
Red Eagle Glacier
Although the 2009 photo location does not exactly match the historic photo station, a comparison of relative glacial coverage can still be made. Logan Glacier is in the foreground, while Red Eagle Glacier sits beneath the pyramidal peak that bears the same name. It appears that these two glaciers were joined at the time the historic photo was taken, but recessed into their own basins as time...
Piegan Glacier
Piegan Glacier is one of the few glaciers in Glacier National Park that has not significantly changed since photographed in the 1930s.
Iceberg Glacier circa 1940 - 2008
Iceberg Glacier in Glacier National Park.
Harrison Glacier
While difficult to quantify, this photo pair of Harrison Glacier exemplifies the loss of glacier volume. Comparison of the ice profile in the foreground of the photos shows a marked thinning of the glacier over the years,. Colorful layers of sedimentary bedrock are being exposed as the glacier recedes from the cliff bands.
Jackson Glacier
At the time this historic photograph was taken in 1911, Blackfoot Glacier encompassed the current Jackson Glacier. By 1939, Blackfoot Glacier's recession had resulted in two distinct glaciers, Jackson and Blackfoot. This photo pair shows glacial recession and successive vegetation growth along Jackson Glacier's terminus.
Grinnell Glacier Basin 1936-2013
As Grinnell Glacier retreats, vegetation establishes itself in the newly exposed surfaces. The increase in vegetation along the moraine (center) in this pair is especially obvious.
Grinnell Glacier Basin 1936-2010
Upon close inspection of this photo pair, the viewer can appreciate the change in the volume of glacial ice that has melted from Grinnell Glacier. In the 2010 image, the glacier's terminus can be seen along the edge of Upper Grinnell Lake, a feature that did not exist in 1936.
Grinnell Glacier from Elrod's Rock and terminus
This large boulder was used by Morton Elrod and other scientists as a baseline to measure the retreat of Grinnell Glacier’s terminus. It is now referred to as “Elrod’s Rock,” and the glacier’s terminus is no longer visible from this point.
Grinnell Glacier Basin 1936-2014
A similar view of Grinnell Glacier from the glacier's eastern terminus shows extensive melting and subsequent result, Upper Grinnell Lake. Please respect the photographer: When using these photographs, please credit the photographer and source (eg. T.J. Hileman, courtesy of Glacier National Park Archives). The paired images at the top of this page are examples of proper crediting for each photo...
Grinnell Glacier from North Moraine, 1922 - 2008
View from north moraine of Grinnell Glacier. Image Use Most of the repeat photography images available on this website are in the public domain and may be reproduced without permission. Images with restrictions are noted below the downloadable image. Please respect the photographer: When using these photographs, please credit the photographer and source (eg. T.J. Hileman, courtesy of Glacier...