Diffusion of SF6 and N2O Tracers — Resource Gradient Experiment
Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Concentrations of SF6 and N2O tracer gases over time after injection during summer and fall of 2012. Experiments always started at 10:30-11:00 am on the day indicated. Plots were located in Block 1 of Resource Gradient Experiment with 56 and 74 kg N/ha in rainfed plots and 37 and 93 kg N/ha in irrigated plots designated as T1-T4, respectively.
This datatable is part of the Trace gas movement in the soil profile dataset.
The distribution of trace gasses in the soil profile was investigated using tracer and monitoring techniques. This data is part of Iurii Shcherbak thesis work.
Note
| Experiment: | Resource Gradient Experiment |
| Data available from: | June 2012 to November 2012 |
| Dataset: | KBS102 |
| Datatable ID: | KBS102-001.7 |
| Repository link: | http://doi.org/10.6073/pasta/a5c5d07c3d23e9744d383c1d1d6812b8 |
| Related Tables: | |
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| Last Updated | 2023-10-24 |
| Variate | Description | Units |
|---|---|---|
| operation | injection or measurement | |
| injected compound | the compound that was injected into the soil | |
| date | the date of the experiment | |
| time | Time from the beginning of the experiment (usually close to 11 am) on the day | |
| time id | Consecutive sample time designator (T0, T1, etc) | |
| treatment | treatment name | |
| replicate | replicate sample location in the plot | |
| injection depth | depth of the trace injection below the surface | |
| sample depth | sampling depth below the surface | |
| sf6 signal | SF6 signal (chromatogram area) | mV |
| sf6 proportion | proportion of the sf6 divided by the total signal for all gases combined | mV/mV |
| n2o signal | N2O signal (chromatogram area) | mV |
| n2o proportion | proportion of combined signal for sample assigned to N2O | mV/mV |
| ch4 signal | CH4 signal (chromatogram area) | mV |
| co2 signal | CO2 signal (chromatogram area) | mV |
| Protocols |
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Data Excerpt
| operation | injected_compound | date | time | time_id | treatment | replicate | injection_depth | sample_depth | sf6_signal | sf6_proportion | n2o_signal | n2o_proportion | ch4_signal | co2_signal |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| injection | n2o | 2012-06-20 | 0.0 | T1 | 36.0 | 30.0 | ||||||||
| injection | n2o | 2012-06-20 | 0.82 | T1 | 60.0 | 50.0 | ||||||||
| injection | n2o | 2012-06-20 | 4.09 | T1 | 90.0 | 75.0 | ||||||||
| injection | n2o | 2012-06-20 | 2.45 | T2 | 36.0 | 30.0 | ||||||||
| injection | n2o | 2012-06-20 | 1.64 | T2 | 60.0 | 50.0 |