Scientific Investigations Report 2006–5145
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5145
Table 9. List of equipment used to instrument Grapevine Springs ET site.
[CSI, Campbell Scientific, Inc.; REBS, Radiation and Energy Balance Systems; DAA, Design Analysis Associates, Inc. See figure 13 for schematic of instrument configuration and setup]
| Instrument | Company/ manufacturer |
Model number | Measured parameter |
|---|---|---|---|
| Data logger | CSI | CR23X-4m | Record parameters—used to calculate and evaluate evapotranspiration. |
| Water content reflectometer | CSI | CS616-L | Measure moisture content—used to evaluate changes in soil moisture. |
| Averaging soil temperature probe | CSI | TVC-L | Measure near surface soil temperature—used to calculate changes in soil temperature which are used in computing heat flux across soil surface. |
| Temperature/humidity probe | REBS | THP-1 | Measures air temperature and vapor pressure at two vertical locations—used to calculate temperature and vapor-pressure gradients which are used to compute the Bowen ratio. |
| Automated probe exchange mechanism | REBS | AEM2 | Exchange vertical positions of temperature-humidity probes. |
| Heat-flow transducer | REBS | HFT3.1 | Measure near surface soil-heat flow—used to compute heat flux across soil surface. |
| Net radiometer | REBS | Q*7.1 | Measure net radiation—used to calculate available energy. |
| Wind monitor | R.M. Young | 05106-5A | Measure horizontal wind speed and direction—used to help evaluate computed evapotranspiration. |
| Water-pressure sensor | DAA | DH-21 | Measure water pressure—used to compute daily and annual fluctuations in the water table. |
| Rain gage | NovaLynx | 260-2510 | Measure bulk rainfall—used to compute annual precipitation. |
U.S.
Department of the Interior | U.S. Geological
Survey
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