Related Experiment Video
Updated: May 1, 2026
10:30
Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
Published on: September 11, 2016
10.3K
Single event time series analysis in a binary karst catchment evaluated using a groundwater model (Lurbach system,
C Mayaud1, T Wagner1, R Benischke2
1Institute for Earth Sciences, University of Graz, Heinrichstraße 26, A-8010 Graz, Austria.
Journal of Hydrology
|April 22, 2014
Summary
Inter-catchment flow in karst systems can be identified using time series analysis of single events. This method, validated by a groundwater model, highlights aquifer heterogeneity and overflow zone location as key factors.
Area of Science:
- Hydrology
- Hydrogeology
- Karst Science
Background:
- The Lurbach karst system exhibits complex hydrological behavior with both autogenic and allogenic recharge.
- Inter-catchment flow between sub-catchments is triggered by high spring discharge thresholds.
Purpose of the Study:
- To evaluate time series analysis methods for identifying transient inter-catchment flow in a binary karst system.
- To validate these methods using a simplified groundwater flow model (MODFLOW).
Main Methods:
- Time series analysis (autocorrelation, cross-correlation) applied to tracer experiment data.
- Development and application of a MODFLOW-based synthetic karst aquifer model.
- Simulation of various allogenic recharge intensities and hydraulic property variations.
Main Results:
- Time series analysis successfully identified intermittent inter-catchment flow, consistent with observed data.
- The MODFLOW model simulated overflow behavior, supporting the understanding of the karst system.
- Cross-correlation analysis revealed similar patterns between real and synthetic data, indicating comparable aquifer properties.
Conclusions:
- Time series analysis of single events is a viable method for characterizing transient inter-catchment flow in karst systems.
- Aquifer parameter heterogeneity and the location of the overflow zone are critical factors controlling inter-catchment flow.
- Findings support the understanding of an overflow zone in the upper Lurbach karst aquifer.
Related Concept Videos
01:05Noncompartmental Analysis: Mean Residence Time
727
According to statistical moment theory, mean residence time (MRT) is an important measure in pharmacokinetics. MRT can be defined as the expected mean of a probability density function distribution. It provides valuable insights into drug disposition in the body.
After the administration of a drug through intravenous bolus injection, the drug molecules are distributed throughout the body and remain there for varying periods. The MRT represents the average time these drug molecules stay in the...
After the administration of a drug through intravenous bolus injection, the drug molecules are distributed throughout the body and remain there for varying periods. The MRT represents the average time these drug molecules stay in the...
727
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
391
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
391
01:03Precipitation Gravimetry
12.8K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
12.8K