Processed data products for SIDSSE (Sanya Institute of Deep-Sea Science and Engineering) Underwater Ultraviolet Raman Spectrometers (UURS) are described here. Raw data is acquired directly from the instrument, stored normally as raw log files. The data products described here are simple presentations of the spectral data reported by the instrument. The MAT and CSV file products contains the spectral data as a single vector/array, while the PNG/PDF plot products are simple plots of those spectral counts versus pixel number. Conversion of counts and pixel units to physical units requires calibration. One method has been suggested by the P.I.'s:
The horizontal axis, in the current form, is in pixels, not yet in Raman shift. This requires a linear conversion. In the attached plot, the small peak in the middle (~425th pixel) belongs to water, which has a Raman shift of 1600cm-1. Another small peak on the left (around the 215th pixel) belongs to the olivinite, which has a Raman shift of 550cm-1. Raman shift of the other points can be deduced using linear interpolation. |
Oceans 3.0 API filter: dataProductCode=UURS
This is very simple comma separated text file with some header lines. The first column is the pixel index, the second column is the spectral counts. Here is an example:
# Ocean Networks Canada Comma Separated Variables data file for SIDSSE Underwater Ultraviolet Raman Spectrometer # Spectrum scan time: 07-Jan-2019 00:04:05 # Device Name: SIDSSE Underwater Ultraviolet Raman Spectrometer (UURS) SN 01 # Device Code: SIDSSEUURS01 # Pixels, Counts 1,2098 2,2097 3,2110 4,2091 5,2086 6,2104 7,2092 8,2089 9,2100 10,2093 11,2095 12,2095 13,2091 |
Oceans 3.0 API filter: extension=csv
MAT files contain the spectral data:
UURSdata: a structure containing the following data fields:
Oceans 3.0 API filter: extension=mat
Spectral UURS data are provided in PNG/PDF format as a simple line plot of Count versus Pixel. As previously noted, the spectrum isn't calibrated. Standard ONC metadata is display. PDF data products are collated into in a single file. See examples below:
SIDSSEUURS01_20190107T000405.900Z_20190107T120406.213Z-UURSspect.pdf
Oceans 3.0 API filter: extension={png,pdf}
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