Hyperspectral image data acquired during a tracer dye experiment on the Kootenai River, ID, September 27, 2017
Dates
Acquisition
2017-09-27
Publication Date
2019-11-20
Citation
Legleiter, C.J., McDonald, R.R., Nelson, J.M., and Kinzel, P.J., 2019, Remotely sensed data and field measurements from a tracer dye experiment on the Kootenai River, ID, September 25-27, 2017: U.S. Geological Survey data release, https://doi.org/10.5066/P9CV4XEO.
Summary
To support research on dispersion in river channels, a tracer dye experiment was performed on the Kootenai River in northern Idaho, September 25-27, 2017. This data release provides access to hyperspectral image acquired during the experiment and the supporting field-based measurements of reflectance and dye concentration are available through related data releases. The hyperspectral image data were acquired by Quantum Spatial Inc. (QSI) using the ITRES CASI 1500H imaging system deployed from a Cessna Caravan manned aircraft from a flying height of 1000 m above ground level. Initial geometric and radiometric data processing was performed by ITRES and yielded images with 0.5 m pixels for each of 48 spectral bands from 380-1050 nm. [...]
Summary
To support research on dispersion in river channels, a tracer dye experiment was performed on the Kootenai River in northern Idaho, September 25-27, 2017. This data release provides access to hyperspectral image acquired during the experiment and the supporting field-based measurements of reflectance and dye concentration are available through related data releases. The hyperspectral image data were acquired by Quantum Spatial Inc. (QSI) using the ITRES CASI 1500H imaging system deployed from a Cessna Caravan manned aircraft from a flying height of 1000 m above ground level. Initial geometric and radiometric data processing was performed by ITRES and yielded images with 0.5 m pixels for each of 48 spectral bands from 380-1050 nm. Although a large mosaic assembled from parallel, north-south strips covering a larger portion of the Kootenai River valley was collected as part of this project, this data release focuses on a series of shorter flight lines that more directly followed the river's path during multiple passes that captured the progression of the dye plume at multiple points in time. The image data were radiometrically calibrated to spectral radiance units of μW cm-2 sr-1 nm-1 and formatted with 16-bit signed integers in a BSQ intertleave. The sensor manufacturer, ITRES, also performed atmospheric correction of the radiance images using the ATCOR software package, which produced output images in units of apparent surface reflectance scaled by a factor of 100 (% X 100, or reflectance X 10,000). The resulting *.bsq and assocaited *.hdr files are compatible with the ENVI software package. The UTC time at the beginning of each flight line is included in the .csv file describing the images to allow for synthesis with in situ measurements of Rhodamine WT dye concentration made during the experiment as the hyperspectral images were being acquired. Overall, the images and related field-based data sets were used to assess the potential for estimating tracer dye concentrations from remotely sensed data to support studies of dispersion in river channels.
Click on title to download individual files attached to this item.
KootenaiHyperspectralImagesMetadata.xml “Metadata about the data and how it was obtained and processed” Original FGDC Metadata
View
15.91 KB
application/fgdc+xml
KootSondes+Images.jpg “Map of hyperspectral image footprints and dye concentration measurements”
2.06 MB
image/jpeg
KootenaiImageFootprints.zip “Shapefile with image footprints and start times for hyperspectral flight lines”
4.1 KB
application/zip
KootenaiHyperspectralImages.csv “Basic information about the hyperspectral image data”
1.07 KB
text/csv
CASI_2017_09_28_220347.G_atm.bsq.hdr “ENVI format header file to accompany the image data file”
2.59 KB
application/unknown
CASI_2017_09_28_215525.G_atm.bsq.hdr “ENVI format header file to accompany the image data file”
2.59 KB
application/unknown
CASI_2017_09_28_215955.G_atm.bsq.hdr “ENVI format header file to accompany the image data file”
2.59 KB
application/unknown
CASI_2017_09_28_220833.G_atm.bsq.hdr “ENVI format header file to accompany the image data file”
2.59 KB
application/unknown
CASI_2017_09_28_221241.G_atm.bsq.hdr “ENVI format header file to accompany the image data file”
2.59 KB
application/unknown
CASI_2017_09_28_222241.G_atm.bsq.hdr “ENVI format header file to accompany the image data file”
2.59 KB
application/unknown
CASI_2017_09_28_222700.G_atm.bsq.hdr “ENVI format header file to accompany the image data file”
2.59 KB
application/unknown
CASI_2017_09_28_221741.G_atm.bsq.hdr “ENVI format header file to accompany the image data file”
2.59 KB
application/unknown
CASI_2017_09_28_223121.G_atm.bsq.hdr “ENVI format header file to accompany the image data file”
2.59 KB
application/unknown
CASI_2017_09_28_223827.G_atm.bsq.hdr “ENVI format header file to accompany the image data file”
2.59 KB
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2.08 GB
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2.38 GB
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2.78 GB
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3.1 GB
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3.41 GB
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7.25 GB
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2.42 GB
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2.43 GB
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3.04 GB
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6.26 GB
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Shapefile:
CASIstripsAtcor.zip
CASIstripsAtcor.cpg “Shapefile with image footprints and start times for hyperspectral flight lines”
5 Bytes
CASIstripsAtcor.dbf “Shapefile with image footprints and start times for hyperspectral flight lines”
1.47 KB
CASIstripsAtcor.prj “Shapefile with image footprints and start times for hyperspectral flight lines”
394 Bytes
CASIstripsAtcor.sbn “Shapefile with image footprints and start times for hyperspectral flight lines”
220 Bytes
CASIstripsAtcor.sbx “Shapefile with image footprints and start times for hyperspectral flight lines”
124 Bytes
CASIstripsAtcor.shp “Shapefile with image footprints and start times for hyperspectral flight lines”
8.2 KB
CASIstripsAtcor.shx “Shapefile with image footprints and start times for hyperspectral flight lines”
180 Bytes
Related External Resources
Type: Related Primary Publication
Legleiter, C.J., McDonald, R.R., Nelson, J.M., Kinzel, P.J., Perroy, R.L., Baek, D., and Seo, I.W., 2019, Remote sensing of tracer dye concentrations to support dispersion studies in river channels: Journal of Ecohydraulics, v. 4, no. 2, p. 131-146, https://doi.org/10.1080/24705357.2019.1662339.
For questions concerning this data set, please contact:
Dr. Carl J. Legleiter - cjl@usgs.gov, 303-271-3651
Geomorphology and Sediment Transport Laboratory
United States Geological Survey
4620 Technology Drive, Suite #400
Golden, CO 80403
Purpose
Overall, the images and related field-based data sets were used to assess the potential for estimating tracer dye concentrations from remotely sensed data to support studies of dispersion in river channels.
Rights
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Preview Image
Map of hyperspectral image footprints and dye concentration measurements