Abandoned gold-rush town of Dyea, near Skagway. 2005 retake of 1899 photo, by Kathy Hocker and Karl Gurcke

Abandoned gold-rush town of Dyea, near Skagway. 2005 retake of 1899 photo, by Kathy Hocker and Karl Gurcke

Repeat photography

Sometimes abbreviated RP, repeat photography is the art and science of precisely retaking historical photographs in order to document, analyse and understand change. We prioritize well-captured and reliably relocated scenes, offering opportunities to examine successional change in vegetational communities, and in some cases landform evolution.

The map below shows locations of historic photos–both ground-based (red triangles) and aerial obliques (black arrows), mostly by the US Navy in 1926 & 1929. Symbols point in the direction the photo was taken. Clicking on an arrow opens a pop-up with information about the photo and a thumbnail. Clicking on that thumbnail opens a medium-resolution view. Thanks to support from Kim Homan, formerly with the Southeast Alaska GIS Library, for posting this collection. The host is ESRI’s ArcGISonline. By clicking ‘view larger map’ you move to their site.

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Documenting change through repeat photography in Southeast Alaska

This report highlights historical photographs of Southeast Alaska from a variety of archives.  It focuses on repeat photography, the act of retaking historical photos and juxtaposing them with the originals in order to see changes in the land over time.  Not only does this report cover most of Southeast Alaska, it also offers insights into the past and future of photographic documentation.

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Gold Creek Delta Historical Series

This report uses historical photos and maps to document the changing downtown Juneau waterfront  from mid-1800s to present.  It's a fascinating window to Juneau's growth. Carstensen annotates the maps, providing detailed observations about the Delta. This report was created in order to evaluate alterations along the shoreline proposed for a Seawalk.

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Mendenhall Glacier: Aerial Perspectives

This booklet of maps and images spanning the past century shows the Mendenhall Glacier’s retreat and the forest succession, while also providing information on the area’s geology.  The Mendenhall Glacier was the destination selected by the Glacier habitat group of the STREAM: Pedagogy of Place Institute, July 17-19, 2013.  You’ll find information about bedrock geology and surficial geology, and you’ll also find historical photographs of the Mendenhall.

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Our dynamic home: Southeast Alaska then and now

In this half-hour video of still photography, Richard Carstensen looks at a rich archive of historical aerial photos taken in 1948 for mapping purposes, and compares them to present day images of Southeast Alaska communities. The result illuminates not only how the natural areas have changed, but also how our communities have changed.

From Richard:

In 2011, Cathy Pohl and I [Richard Carstensen] received a drive with 22,000 scanned air photos taken by the Navy in 1948. For the first time, cartographers and researchers in Southeast Alaska could efficiently access this extraordinary collection, studying natural and anthropogenic change in photos spanning 60 years. To celebrate, I created this 35-minute narrated slideshow comparing the 30-or-so Southeast communities, then and now.

[1867-2017] 150 Years of Change

 

1867_2017 from Richard Carstensen on Vimeo.

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Presentation for the Juneau-Douglas City Museum, in the sesquicentennial year of Seward’s purchase. Visualizations of 3 iconic Juneau landscapes as they appeared in 1867, and today (2017). For more background, download the pdf 1867-2017.