How to access the database?

 

To access the database and download data sets, you need to create an account at this address. When your account is validated, you can connect to the database interface or directly download data from the links available on the website using your login and password. Please, follow this tutorial for more information.

Description of the Mons site

The experimental test site consists of two adjacent wells Pz1 and Pz2, which have been drilled to a depth of 50 m in a porous/fractured chalk system. The two wells are located around 5.5 km WNW from Mons city in South-West Belgium. They are 7.55 m distant and are mainly hydraulically connected by sub-horizontal fractures. The uppermost 12 m-section of the two wells are lined with a metallic casing, while the rest meters are unlined, allowing experiments with inflatable double packer systems (Goderniaux et al., 2018; Hoffmann et al., 2020).  

The investigated chalk aquifer (Cretaceous) is part of the Mons Basin geological entity. In the around the two wells, the aquifer is considered as unconfined. The porous matrix of the chalk has a high estimated total porosity while the porosity related to the fractures is estimated to be of a few percentages only. The aquifer under investigation can be considered as a typical dual porosity, dual permeability reservoir. A global equivalent hydraulic conductivity was estimated to be 5.18×10-5 m s-1 based on pumping test data, over the whole well section (Goderniaux et al., 2018).  

 

References

  1. 1. P. Goderniaux, A. Beyek, A. Tchotchom, A. Poulian, M.-L Wattier, and S. Vandycke. Study of the heterogeneity of hydraulic properties in a chalk aquifer unit, using sequential pumping and tracing experiments with packer systems, In Engineering in Chalk, pages 675--680. Imperial College, London, 2018. [ DOI ]
  2. 2. R. Hoffmann, P. Goderniaux, P. Jamin, E. Chatton, J. de la Bernardie, T. Labasque, T. Le Borgne, and A. Dassargues. Continuous dissolved gas tracing of fracture-matrix exchanges. Geophysical Research Letters, 47(17):e2020GL088944, 2020. [ DOI ]

 

Data Available At The Mons Site

 

Access to the data from Google Earth module

The Google Earth module provides a site visualization and information on data available such as types of measurements, locations, dates, etc. This interface also provides an overview of geophysical maps and cross-sections, which can be directly downloaded from the available links. Data available through predefined requests can be downloaded from this interface too.  

To download the Google Earth file and access to the data of this site, click on the following icon : 

 

Access to the data from database interface

All data inserted in the H+ database can be extracted using requests, which can be defined through this interface. For more information, please read the tutorial available here.

 

Overview of the database interface.

 

Access to the data from predefined requests

To help finding general data sets, predefined requests have been created and are regularly executed. Results can be downloaded from the links available below.

 

Chemistry

Deformation

Site data

Spatialized data

Experiments

Experimental bench

Hydraulic

In situ measurements

  

Borehole

Soil atmosphere exchange

Stations

  

 

Access to the data from published articles

Alternatively, user can find specific data sets published in scientific journals. The web page that links to the specific data set is provided at the end of the reference.

 

R. Hoffmann, P. Goderniaux, P. Jamin, P. Orban, S. Brouyère, and A. Dassargues. Differentiated influence of the double porosity of the chalk on solute and heat transport. Geological Society, London, Special Publications, SP517-2020-170, 2021. [ DOI | Data ]

R. Hoffmann, P. Goderniaux, P. Jamin, E. Chatton, J. de la Bernardie, T. Labasque, T. Le Borgne, and A. Dassargues. Continuous dissolved gas tracing of fracture-matrix exchanges. Geophysical Research Letters, 47:e2020GL088944, 2020. [ DOI | Data ]