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Blue Lake - Mt Gambier - South Australia by ted Brattstrom

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About This Gigapan

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Taken by
ted Brattstrom ted Brattstrom
Explore score
1
Size
1.45 Gigapixels
Views
1084
Date added
Jun 15, 2010
Date taken
Jun 07, 2010
Gear

Canon PowerShot SX110 IS

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Description

The Blue Lake is one of several lakes in Mount Gambier - the city and the mountain. It provides the drinking water for the area and is refreshed through the limestone aquifer at its base.

This is an example of Maar volcanism. In this case, a limestone plain was gently erupted through to spread a layer of basalt/lava over the surface. After cooling, water went down the conduits, and when enough water met enough lava - KaBoom! A large ash and rock blast / eruption occurred forming the mountain.

Three distinct layers can be seen in the image - Lowest: Limestone, Middle: Basalt, Top: Ash

The other impressive action of this lake is a color change from grey-green to blue caused by a combination of algal/bacterial and chemical changes (which are linked, and seasonal)

Although this image looks blue to me, supposedly the true Blue is significantly different.


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Stitcher Notes

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GigaPan Stitch version 1.0.0805 (Windows)
Panorama size: 1452 megapixels (90456 x 16060 pixels)
Input images: 240 (30 columns by 8 rows)
Field of view: 159.7 degrees wide by 28.3 degrees high (top=4.6, bottom=-23.8)
Settings:
All default settings
Original image properties:
Camera make: Canon
Camera model: Canon PowerShot SX110 IS
Image size: 3456x2592 (9.0 megapixels)
Capture time: 2010-06-07 15:08:52 - 2010-06-07 15:26:21
Aperture: f/8
Exposure time: 0.01
ISO: 80
Focal length (35mm equiv.): 357.6 mm
Digital zoom: off
White balance: Automatic
Exposure mode: Manual
Horizontal overlap: 11.4 to 20.8 percent
Vertical overlap: 23.8 to 26.9 percent
Computer stats: 2007.63 MB RAM, 2 CPUs
Total time 36:03 (9.0 seconds per picture)
Alignment: 9:20, Projection: 2:50, Blending: 23:52
(Preview finished in 17:22)

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