GroMoPo Metadata for La Rochefoucauld Aquifer HPP-GMS model

Authors:

GroMoPo Kyle Compare

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gromopo_admin

Type:

Resource

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The size of this resource is 1.7 KB

Created:

Feb 08, 2023 at 2:22 p.m.

Last updated:

Feb 08, 2023 at 2:22 p.m.

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Abstract

Ground water flow modeling in a karst aquifer presents many difficulties. In particular, the hydrodynamic properties and the now behavior can vary over time. History matching of transient-state conditions is required to test the accuracy of the model under varying hydrodynamic conditions. The objective of this study was to illustrate how transient-state conditions can be used to history match a ground water flow model of a large aquifer, the La Rochefoucauld karst (Charente, France). The model used a porous medium equivalent and was based on a steady-state calibration of hydraulic conductivities. The history match consisted of studying the simulated heads and spring flow rates to test the capacity of the model to reproduce different aspects of the aquifer behavior, The simulated heads and flow rates were analyzed as new data using correlation and spectral analyses to compare the temporal structures of the measured and simulated time series. The analyses provided information on the storage capacity of the aquifer, the input-output delays, the degree of correlation between input and output, and the length of the impulse response of the aquifer, These data were used to study the impact of the hypotheses underlying the model (hydraulic conductivities, storage coefficient, representation of rivers, use of a porous medium equivalent). The results show that the model adequately simulates the overall behavior of the studied aquifer, The model can be used under variable hydrodynamic conditions to simulate ground water flow on a regional scale. This case study illustrates how a complete history match of a simplified representation of reality can lead to an adequate mathematical tool.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

France

North Latitude

45.9067°

East Longitude

0.3908°

South Latitude

45.7390°

West Longitude

0.2049°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
DOI	10.1111/j.1745-6584.2000.tb00694.x
Depth
Scale	101 - 1 000 kmÂ²
Layers
Purpose	Scientific investigation (not related to applied problem)
GroMoPo_ID	265
IsVerified	True
Model Code	GMS;HPP-GMS
Model Link	https://doi.org/10.1111/j.1745-6584.2000.tb00694.x
Model Time	1994-1995
Model Year	2000
Model Authors	Larocque, M; Banton, O; Razack, M
Model Country	France
Data Available	Report/paper only
Developer Email	NA
Dominant Geology	Carbonate (including karst)
Developer Country	France; Canada
Publication Title	Transient-state history matching of a karst aquifer ground water flow model
Original Developer	No
Additional Information	This study iis sued to illustrate the use of transient-state conditions for history matching using groundwater flow modeling of a karst aquifer in the La Rochefoucauld karst in Charente, France.
Integration or Coupling	None of the above
Evaluation or Calibration	Static water levels;Baseflow
Geologic Data Availability	No

How to Cite

GroMoPo, K. Compare (2023). GroMoPo Metadata for La Rochefoucauld Aquifer HPP-GMS model, HydroShare, http://www.hydroshare.org/resource/e7983ce9f33c499bb6497f0580ccafd3

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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