 |
| Titel |
Diurnal pattern of the drying front in desert and its application for determining the effective infiltration |
| VerfasserIn |
Y. Zeng, Z. Su, L. Wan, Z. Yang, T. Zhang, H. Tian, X. Shi, X. Wang, W. Cao |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1027-5606
|
| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 13, no. 6 ; Nr. 13, no. 6 (2009-06-03), S.703-714 |
| Datensatznummer |
250011891
|
| Publikation (Nr.) |
 copernicus.org/hess-13-703-2009.pdf |
|
|
|
|
|
| Zusammenfassung |
| Located in western Inner Mongolia, the Badain Jaran Desert is the second
largest desert in China and consists of a regular series of stable
megadunes, among which over 70 permanent lakes exist. The unexpected lakes
in desert attracted research interests on exploring the hydrological process
under this particular landscape; however, a very few literatures exist on
the diurnal and spatial variation of the drying front in this area, which is
the main issue in the desert hydrological process to characterize the
movement of water in soil. In order to understand the drying front in the
Badain Jaran Desert, a field campaign was conducted by the observations of
soil physical parameters and micrometeorological parameters. With the field
data, the performance of a vadose zone soil water balance model, the HYDRUS,
was verified and calibrated. Then, the HYDRUS was used to produce the
spatial and temporal information of coupled water, water vapour and heat
transport in sand to characterize the variation pattern of the drying front
before, during and after the rainfall. Finally, the deepest drying front was
applied to determine the effective infiltration, which is defined as the
amount of soil water captured by the sand beneath the deepest drying front
by infiltrating water of an incident rainfall event. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|