Moving Beyond the Frame: Geovisualization of Landscape Change Along the Southwestern Edge of Yosemite National Park
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(2019) 3:9
Moving Beyond the Frame: Geovisualization of Landscape Change Along the Southwestern Edge of Yosemite National Park Jeffrey Jenkins 1
&
Adam Fleenor 2 & Fisher Dietz 3
# Springer Nature Switzerland AG 2019
Abstract As part of the 1930s New Deal programs, the Civilian Conservation Corps funded a team of photographers to capture forest landscapes, including those in the Stanislaus National Forest and southwestern portion of Yosemite National Park. While initially, the program focused on assessing travel time, terrain challenges, and viewable area, the program went on to acquire expressly made Osborne Panoramic Cameras, which were used to take panoramic photos from fire towers and other potential lookout peaks. We utilized panoramic photos by Lester Moe, which are typical unidirectional panoramic images (360° x-axis) as the basis for this repeat photography project. Many of the human and natural features have changed in the intervening years, which present an added challenge for obtaining aligned photo sets. We utilized a combination of geovisualization technologies to capture, compare, and communicate imagery, including the Wide-Area Visualization Environment (WAVE) and omnidirectional “spherical projection” CaveCam (360° x- and y-axis). This workflow applies a novel technological approach to a common landscape photography method to overcome some of the challenges associated with repeatability and offer valuable additional highresolution data. Keywords Landscape change . Repeat photography . Sierra Nevada . Wildland fire . Spherical panoramas . Stereo imagery
Repeat Photography: Assessing and Communicating Landscape Change Over Time Repeat photography of historic photos is a powerful method for identifying chronological change of landscape features, including glacier extent (Fagre and McKeon 2010); longterm vegetation growth (Bullock and Heath 2006); recreation, transportation, and visitor use (Meyer and Youngs 2018); habitat and biodiversity composition (Fortin 2018); and forest fire studies (Turner et al. 2010). These studies compare change over a range of time intervals that include small stochastic events like fire or floods and long-term change like tree line migration and geomorphological transformation.
* Jeffrey Jenkins [email protected] 1
Management of Complex Systems, University of California, 5200 Lake Rd, Merced, CA 95343, USA
2
Interdisciplinary Humanities Graduate Group, University of California, 5200 Lake Rd, Merced, CA 95343, USA
3
Computer Science and Engineering, University of California, 5200 Lake Rd, Merced, CA 95343, USA
Repeat photography is part of a mixed methods approach which includes geographic information system (GIS) and visualization, field surveys, and archival research that complement the contents within the photographic frame (Klett 2011). These important supporting methods situate the photos with external references; our method increases the photo value directly by extending and enriching the contemporary photo-pair. Whereas maps offer visual diagrams
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