• Login
    View Item 
    •   Home
    • RIVM official reports
    • RIVM official reports
    • View Item
    •   Home
    • RIVM official reports
    • RIVM official reports
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    RIVM Publications RepositoryCommunitiesTitleAuthorsIssue DateSubmit Date

    My Account

    LoginRegister

    Statistics

    Display statistics

    Modelling subrosion and groundwater flow in the vicinity of the Zuidwending diapir on the basis of geometrical and (palaeo)hydrological boundary conditions for the northeastern part of the Netherlands. (Final report of the SESAM project)

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Average rating
     
       votes
    Cast your vote
    You can rate an item by clicking the amount of stars they wish to award to this item. When enough users have cast their vote on this item, the average rating will also be shown.
    Star rating
     
    Your vote was cast
    Thank you for your feedback
    Authors
    Oostrom M
    Gijssel K van
    Zijl W
    Type
    Report
    Language
    en
    
    Metadata
    Show full item record
    Title
    Modelling subrosion and groundwater flow in the vicinity of the Zuidwending diapir on the basis of geometrical and (palaeo)hydrological boundary conditions for the northeastern part of the Netherlands. (Final report of the SESAM project)
    Translated Title
    [Modellering van subrosie en grondwaterstroming in de nabijheid van de Zuidwending zoutpijler gebaseerd op geometrische en (paleo)hydrologische randvoorwaarden voor noordoost Nederland. Eindrapport van het SESAM project.]
    Publiekssamenvatting
    Abstract niet beschikbaar
    The SESAM project was intended to perform a local model validation using site specific geological and (palaeo)hydrological boundary conditions in relation to the release of radionuclides from a waste repository in rock salt into the geosphere. The project was conducted by the RIVM, RGD, and IGG-TNO. Groundwater flow models are constructed for two selected areas: A regional model of the subsurface of the NE part of the Netherlands and a local model of the surroundings of the Zuidwending diapir. The models are constructed on the basis of geological and palaeo-environmental information, provided by the RGD. The steady-state regional groundwater flow for the present time and six Late Quaternary geological periods in the northeastern part of the Netherlands are simulated by IGG-TNO with the slightly adapted MODFLOW code. These studies provided the side flow boundary conditions for the local RIVM model, in which flow and transport in the vicinity of the selected diapir are examined with the METROPOL-3 model. Similar to current international standards with respect to safety assessment studies, the local model consists of i) a conceptual model, ii) a computer code, and iii) site-specific data sets. Emphasis has been put on calibration for present day conditions, detailed sensitivity analyses, simulation of flow and transport during six Late Quaternary geological periods, and a comparison of calculated subrosion rates with values reported in the literature. The simulations for the regional model showed that the potential gradients in the interglacial periods are considerably less than those in the periglacial periods. The largest groundwater velocities occurred during the Late Saalian. Application of the 3D local model resulted in an asymptotically decreasing subrosion rate of 0.12 mm/year after a simulation period of 50.000 years. The order of magnitude of the subrosion rates obtained with the METROPOL-3 code is the same as reported for other Dutch and German diapirs on the basis of geological methods. A sensitivity analysis indicated the side boundary fluxes and the permeabilities of the geological layers as te most sensitive parameters. As a consequence of the limited availability of data, complete validation of the local site-specific model is considered very difficult. For a meaningful calibration more filed data in the vicinity of the salt diapir are needed. Most essential are new data on the salt mass fraction distribution near the dome.
    Sponsors
    DGM/SVS EZ/Cie OPLA
    URI
    http://hdl.handle.net/10029/255664
    Collections
    RIVM official reports

    entitlement

     

    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.