 |
| Titel |
Geophysical methods to support correct water sampling locations for salt dilution gauging |
| VerfasserIn |
C. Comina, M. Lasagna, D. A. Luca, L. Sambuelli |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1027-5606
|
| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 18, no. 8 ; Nr. 18, no. 8 (2014-08-26), S.3195-3203 |
| Datensatznummer |
250120445
|
| Publikation (Nr.) |
 copernicus.org/hess-18-3195-2014.pdf |
|
|
|
|
|
| Zusammenfassung |
To improve water management design, particularly in irrigation areas, it is
important to evaluate the baseline state of the water resources, including
canal discharge. Salt dilution gauging is a traditional and well-documented
technique in this respect. The complete mixing of salt used for dilution
gauging is required; this condition is difficult to test or verify and, if
not fulfilled, is the largest source of uncertainty in the discharge
calculation. In this paper, a geophysical technique (FERT, fast electrical
resistivity tomography) is proposed for imaging the distribution of the salt
plume used for dilution gauging at every point along a sampling
cross section. With this imaging, complete mixing can be verified. If the
mixing is not complete, the image created by FERT can also provide a
possible guidance for selecting water-sampling locations in the sampling
cross section. A water multi-sampling system prototype aimed to potentially
take into account concentration variability is also proposed and tested.
The results reported in the paper show that FERT provides a
three-dimensional image of the dissolved salt plume and that this can
potentially help in the selection of water sampling points. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|