Geophysical Survey as a Tool to Reveal Subsurface Stratification at within a Small Agricultural Headwater Catchment: a Case Study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00352374" target="_blank" >RIV/68407700:21110/21:00352374 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.14311/CEJ.2021.03.0059" target="_blank" >https://doi.org/10.14311/CEJ.2021.03.0059</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/CEJ.2021.03.0059" target="_blank" >10.14311/CEJ.2021.03.0059</a>

Result language

angličtina

Original language name

Geophysical Survey as a Tool to Reveal Subsurface Stratification at within a Small Agricultural Headwater Catchment: a Case Study

Original language description

Managers use the catchment as a basic spatial unit in landscape hydrology to estimate local water balance and manage water resources. The catchment drainage area is commonly delineated based on the surface topography, which is determined using a digital elevation model. Therefore, the surface outflow only is implicitly considered. However, a substantial portion of the rainfall water infiltrates and percolates through the soil profile towards the groundwater, where geological structures control the drainage area instead of the soil surface topography. The discrepancy between the surface topography-based and bedrock-based drainage area can cause larger discrepancies in water balance calculations. It this paper, we present the investigation of the subsurface media stratification within the headwater catchment, located in the central part of the Czech Republic using a geophysical survey method - electrical resistivity tomography (ERT). Results indicate that the complexity of the subsurface geological layers cannot be estimated solely from the land surface topography. Although the shallow layers follow the shape of the surface, the deeper layers do not. This finding has a strong implication on the water flow regime since it suggests that the deep drainage may follow different pathways and other preferential directions as compared to the water flow within the shallow subsurface.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10503 - Water resources

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

The Civil Engineering Journal

ISSN

1210-4027

e-ISSN

1805-2576

Volume of the periodical

30

Issue of the periodical within the volume

3

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

13

Pages from-to

766-778

UT code for WoS article

000711780900006

EID of the result in the Scopus database

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