File:AnimasMixingZone.jpeg

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Summary

The mixing zone between metal rich waters of Cement Creek (right) mixing with cleaner waters of the Animas River (left).

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	13:50, 15 May 2023		1,024 × 366 (223 KB)	TanyaPetach (talk \| contribs)	The mixing zone between metal rich waters of Cement Creek (right) mixing with cleaner waters of the Animas River (left).

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Metals and acid mine drainage

Metadata

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Image title	Although the visual picture of mixing zones at stream confluences appears straightforward, such as this one at the confluence of Cement Creek and the Animas River in Colorado, the chemical reactions that occur make them extremely complex from a water-quality perspective. Cement Creek is on the right and the Animas River is on the left.
Camera manufacturer	Apple
Camera model	iPhone 5c
Copyright holder	All U.S. Geological Survey authored or produced imags, data, and information are considered to be in the U.S. public domain.
Exposure time	1/809 sec (0.0012360939431397)
F Number	f/2.4
ISO speed rating	50
Date and time of data generation	08:48, 30 August 2014
Lens focal length	4.1 mm
Credit/Provider	U.S. Geological Survey
Source	'U.S. Geological Survey',
Author	Research Biologist, Marie-Noële Croteau
Short title	Confluence of Cement Creek and the Animas River, Colorado
Usage terms	When using this image please use this statement: Image used courtesy of the U.S. Geological Survey (USGS).
Width	1,024 px
Height	768 px
Bits per component	8 8 8
Pixel composition	RGB
Orientation	Normal
Number of components	3
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Software used	Adobe Photoshop CC 2018 (Windows)
File change date and time	15:49, 12 September 2018
Subsampling ratio of Y to C	0
Y and C positioning	Centered
Exposure Program	Normal program
Exif version	2.21
Date and time of digitizing	08:48, 30 August 2014
Meaning of each component	Y Cb Cr does not exist
APEX shutter speed	9.6599958737363
APEX aperture	2.5260688216893
APEX brightness	8.8967741935484
Metering mode	Pattern
Flash	Flash did not fire, auto mode
DateTimeOriginal subseconds	886
DateTimeDigitized subseconds	886
Supported Flashpix version	1
Color space	sRGB
Sensing method	One-chip color area sensor
Scene type	A directly photographed image
Exposure mode	Auto exposure
White balance	Auto white balance
Focal length in 35 mm film	33 mm
Scene capture type	Standard
Lens used	iPhone 5c back camera 4.12mm f/2.4
Date metadata was last modified	09:49, 12 September 2018
Unique ID of original document	C56391BF6F30C34F37D6C940A3B0DB00
Contact information	mcroteau@usgs.gov https://www.usgs.gov/staff-profiles/marie-noele-croteau U.S. Geological Survey, National Research Program, Bldg 15, McKelvey Building, 345 Middlefield Road, Mail Stop 496 Menlo Park, CA, 94025-3561 USA
Keywords	Animas River, Cement Creek, confluence, Colorado, CO, Colo., water quality, confluences, mixing zone, reactions, USGS, U.S. Geological Survey, Environmental Health, Contaminant Biology Program, Toxic Substances Hydrology Program, Toxics
IIM version	4