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Tuesday, 10 September 2019

Then and Now: What Happened to the Alaskan Glaciers from 100 Years Ago?

Repeat photography is a technique in which a historical photo and a modern photo, both taken with the same field of view, are put side by side to determine their similarities and differences.
The following collection depict how this technique was used to document and better understand the effect of the changing climate to glaciers and landscapes for the last century-and-a-quarter.
 

Muir Inlet, Glacier Bay National Park and Preserve, Alaska

1892
Glacier-1
H. F. Reid photograph, muir1892_417, courtesy of National Snow and Ice Data Center
2005
Glacier-2
USGS Photograph by Bruce F. Molnia
1880s – 1890s
Glacier-3
G. D. Hazard, 7807, courtesy of Glacier Bay National Park and Preserve Archive
2005
Glacier-4
USGS Photograph by Bruce F. Molnia
Late-19th century
Glacier-5
(L.V. Winter and P. E. Pond, postcard # C141 in the personal collection of the author
105 - 110 years later...
Glacier-6
USGS Photograph by Bruce F. Molnia
1895
Glacier-7
Alaska State Library Photograph by Winter and Pond
2004
Glacier-8
USGS Photograph by Bruce F. Molnia
1899
Glacier-9
USGS Photo Library Photograph - Gilbert 276
2003
Glacier-10
USGS Photograph by Bruce F. Molnia
1899
Glacier-11
USGS Photo Library Photograph - Gilbert 278
2003
Glacier-12
USGS Photograph by Bruce F. Molnia

Reid Inlet, Glacier Bay National Park and Preserve, Alaska

1899
Glacier-13
G. K. Gilbert, 258, courtesy of the USGS Photographic Library
104 years later
Glacier-14
USGS Photograph by Bruce F. Molnia
1924
Glacier-15
A. H. Brooks, 1299, courtesy of the USGS Photographic Library
2003
Glacier-16
USGS Photograph by Bruce F. Molnia

Lamplugh Glacier

1941
Glacier-17
Field photograph # 430-41
2003
Glacier-18
USGS Photograph by Bruce F. Molnia

Triangle Island, Queen Inlet, Glacier Bay National Park and Preserve, Alaska

1906
Glacier-19
USGS Photo Library Photograph - Wright 333
2003
Glacier-20
USGS Photograph by Bruce F. Molnia
1906
Glacier-21
USGS Photo Library Photograph - Wright 333
2004
Glacier-22
USGS Photograph by Bruce F. Molnia

Pedersen Glacier, Aialik Bay, Kenai Fjords National Park, Alaska

1909
Glacier-23
USGS Photo Library Photograph–Grant 131
2004
Glacier-24
USGS Photograph by Bruce F. Molnia
1909
Glacier-25
USGS Photo Library Photograph – Grant 130
2005
Glacier-26
USGS Photograph by Bruce F. Molnia

Yalik Glacier, Kenai Fjords National Park, Kenai Mountains, Nuka Passage, Alaska

1909
Glacier-27
USGS Photo Library Photograph – Grant 235
2004
Glacier-28
USGS Photograph by Bruce F. Molnia

Aialik Glacier, Kenai Fjords National Park, Kenai Mountains, Aialik Bay, Alaska

1909
Glacier-29
USGS Photo Library Photograph –Grant 128
2005
Glacier-30
USGS Photograph by Bruce F. Molnia

McCarty Fjord, Kenai Fjords National Park, Alaska

1909
Glacier-31
USGS Photo Library Photograph – Grant 143
2004
Glacier-32
USGS Photograph by Bruce F. Molnia
1909
Glacier-33
USGS Photo Library Photograph – Grant 144
2004
Glacier-34
USGS Photograph by Bruce F. Molnia
1909
Glacier-35
USGS photograph by D.F. Higgins
2004
Glacier-36
USGS Photograph by Bruce F. Molnia

Holgate Arm, Aialik Bay, Kenai Fjords National Park, Alaska

1909
Glacier-37
USGS Photo Library Photograph–Grant 132
2004
Glacier-38
USGS Photograph by Bruce F. Molnia

Bear Glacier, Kenai Mountains, Kenai Fjords National Park, Alaska

1909
Glacier-39
USGS Photo Library - Photograph Grant 123
2005
Glacier-40
USGS Photograph by Bruce F. Molnia
1909
Glacier-41
USGS Photo Library - Photograph Grant 120
2005
Glacier-42
USGS Photograph by Bruce F. Molnia
Older photo, undated
Glacier-43
Kenai Fjords National Park
2005
Glacier-44
USGS Photograph by Bruce F. Molnia

Harris Bay, Kenai Fjords National Park, Kenai Mountains, Alaska

1909
Glacier-45
USGS Photo Library - Photograph Grant 136
2004
Glacier-46
USGS Photograph by Bruce F. Molnia
1909
Glacier-47
USGS Photo Library - Photograph Grant 137
2004
Glacier-48
USGS Photograph by Bruce F. Molnia

Harvard Arm, College Fiord, Prince William Sound, Chugach National Forest, Alaska

1909
Glacier-49
USGS Photo Library Photograph–Grant 208
2000
Glacier-50
USGS Photograph by Bruce F. Molnia

Toboggan Glacier, Harriman Fiord, Prince William Sound, Chugach National Forest, Alaska

1905
Glacier-51
USGS Photo by Sidney Paige - 731
2000
Glacier-52
USGS Photograph by Bruce F. Molnia

East Fork of the Teklanika River, Denali National Park and Preserve, Alaska

1919
Glacier-53
USGS Photo Library Photograph – Capps
2004
Glacier-54
2004 NPS Photograph by Ron Karpilo

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