Matthiessen, Jens; Stein, Ruediger (2024): Colour reflectance measurements on sediment core PS72/410-3 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.942230
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Abstract:
This data set comprises colour reflectance measurements conducted with a hand-held spectrophotometer (Minolta CM 2002, lens diameter 8mm, field of view 0.8 cm2) at wave lengths from 400 to 700 nm, connected to a Macintosh Powerbook 5300C. Output files are the L*a*b* colour space that is also referred to as CIELAB space (Commission Internationale de l'Éclairage L*a*b colour space 1976), the chroma, hue and value of the Munsell Colour Chart (http://www.munsell.com), the percentage value of the spectrum at 10 nm steps from 400 to 700nm, and the colour values x,y and z that are defined according to the RGB colour space (CIE 1931). Lightness L* (grey scale) is recorded from 0 % (black) to 100% (white), the red-green colour space a* from -4 (green) to 16 (red), and the yellow-blue colour space b* from 0 (blue) to 40 (yellow). The spectral reflectance was measured at cm intervals on freshly split core surfaces that were covered with transparent foil. Every core section was measured separately, and a white calibration first without and then with foil was conducted before and after each core section to identify a possible drift of the spectrophotometer measurements. The raw spectral photometer data were edited by removing obvious outliers e.g. unrealistic values due to uneven core surfaces and erroneous measurements.
Project(s):
Coverage:
Latitude: 80.523100 * Longitude: -175.719700
Date/Time Start: 2008-09-24T01:40:00 * Date/Time End: 2008-09-24T01:40:00
Minimum DEPTH, sediment/rock: 0.09 m * Maximum DEPTH, sediment/rock: 7.63 m
Event(s):
PS72/410-3 * Latitude: 80.523100 * Longitude: -175.719700 * Date/Time: 2008-09-24T01:40:00 * Elevation: -1854.0 m * Penetration: 8.5 m * Recovery: 7.64 m * Location: Arctic Ocean * Campaign: ARK-XXIII/3 (PS72) * Basis: Polarstern * Method/Device: Kasten corer (KAL) * Comment: 8 core sections: 0-0.87, 0.87-1.87, 1.87-2.86, 2.86-3.85, 3.85-4.85, 4.85-5.85, 5.85-6.83, 6.83-7.58 m
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
27397 data points
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