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Qori Kalis outlet glacier at Quelccaya Ice Cap - 2012 by Doug Hardy

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About This Gigapan

Taken by
Doug Hardy Doug Hardy
Explore score
3.07 Gigapixels
Date added
Jul 23, 2012
Date taken
Jul 15, 2012

Panorama of Qori Kalis glacier and the valley below, in the Cordillera Vilcanota of Peru.

Recession of this outlet glacier - the largest flowing from Quelccaya Ice Cap - has been exceptionally well documented by Henry Brecher and Lonnie Thompson of Ohio State University. In the late-1980s there was no lake (see slide #43 at www.geo.umass.edu/climate/quelccaya/fieldwork_2012 Will open in a new tab or window/); the glacier was against recessional moraines (not visible here). Today the lake covers ~34 hectares and has a maximal depth of ~60 meters.

For additional information on the ice retreat, see: Brecher & Thompson, 1993 (Photogrammetric Engineering and Remote Sensing, vol. 590) and Thompson et al., 2006 (Proc. of the Natl. Acad. Sci., vol. 103)

There is a remarkable amount of detail visible in this 170° view, comprised of nearly 1000 megabytes of data(!) - all provided via a "point and shoot" camera mounted on the GigaPan. The "Stitcher Notes" contain more information about the photos. Note for example that the original photos were slightly under-exposed, requiring a bit of post-processing to make shadow detail visible.

Better detail of the glacier is available in #110306 (<

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Stitcher Notes


GigaPan Stitch.Efx version 2.0.0501 (Windows)
Panorama size: 3074 megapixels (106312 x 28916 pixels)
Input images: 615 (41 columns by 15 rows)
Field of view: 168.5 degrees wide by 45.8 degrees high (top=16.9, bottom=-28.9)
Vignette correction on: c1=0.0474 c2=-0.034
All default settings
Original image properties:
Camera make: Canon
Camera model: Canon PowerShot SX120 IS
Image size: 3648x2736 (10.0 megapixels)
Capture time: 2012-07-15 14:26:32 - 2012-07-15 14:59:00
Aperture: f/8
Exposure time: 0.0005
ISO: 80
Focal length (35mm equiv.): 361.4 mm
Digital zoom: off
White balance: Fixed
Exposure mode: Manual
Horizontal overlap: 27.7 to 38.9 percent
Vertical overlap: 28.5 to 45.8 percent
Computer stats: 6141.55 MB RAM, 4 CPUs
Total time 55:29 (5.4 seconds per picture)
Alignment: 24:51, Projection: 6:23, Blending: 24:15
(Preview finished in 36:16)
Color Adjustments:
gamma: 0.72
exposure: 2.0
saturation: 1.10

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