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Erren, H. (author), Munsterman, D.K. (author), Duyverman, H. (author), Incognita, T. (author)
Een vuursteen uit de zilverzandgroeve van Beaujean in Heerlerheide lag 30 jaar veronachtzaamd in de stenenverzameling van Hans Erren. Een artikel van Hans de Kruyk over microfossielen in vuursteen van januari 2018 in Grondboor & Hamer startte de ontdekkingstocht naar de oorsprong van deze bijzondere steen. In de loop van het onderzoek werden...
article 2019
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Pit, I.R. (author), van Egmond, E.M. (author), Dekker, S.C. (author), Griffioen, J. (author), Wassen, M.J. (author), van Wezel, A.P. (author)
Artificial sand replenishments are globally used as innovative coastal protection measures. In these replenishments elevated porewater concentrations of trace elements are found. The present study investigated possible ecotoxicological risks at 2 intertidal depositional sites, the Sand Engine as a recent innovative Dutch coastal management...
article 2018
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Buijze, L. (author), Niemeijer, A.R. (author), Han, R. (author), Shimamoto, T. (author), Spiers, C.J. (author)
The evolution of friction as a function of slip rate is important in understanding earthquake nucleation and propagation. Many laboratory experiments investigating friction of fault rocks are either conducted in the low velocity regime (10−8–10−4 ms−1) or in the high velocity regime (0.01–1 m s−1). Here, we report on the evolution of friction...
article 2017
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Griffioen, J. (author)
Enhanced weathering of olivine has been suggested as a measure to lower the atmospheric CO2 level and it might also mitigate ocean acidification. This study aimed to characterise how olivine can weather in seawater, to elucidate the role of secondary precipitation and to ascertain the efficiency in terms of molar CO2 removal per mole of olivine...
article 2017
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Pit, I.R. (author), Griffioen, J. (author), Wassen, M.J. (author)
As coastal lowlands are prone to sea water flooding, sea-level rise might globally increase this risk. To protect its coastline, the Netherlands adds an average of 12 million m3 of sand annually, but more is needed to cope with the expected consequences of global warming. In 2011 a novel approach for coastal protection was applied near The Hague...
article 2017
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Chen, B. (author), Fonseca, R.M. (author), Leeuwenburgh, O. (author), Reynolds, A.C. (author)
We develop a framework based on the lexicographic method and the newly developed Stochastic-Simplex-Approximate-Gradient (StoSAG) algorithm to maximize the expected net-present-value (NPV) and minimize the associated risk or uncertainty in robust life-cycle production optimization. With the lexicographic method, we first maximize the expectation...
article 2017
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Westerhoff, W. (author), Donders, T. (author), Luthi, S. (author)
ICDP workshop COring the NOrth Sea Cenozoic focused on the scientific objectives and the technical aspects of drilling and sampling. Some 55 participants attended the meeting, ranging from climate scientists, drilling engineers, and geophysicists to stratigraphers and public outreach experts. Discussion on the proposed research sharpened the...
article 2016
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Bruns, B. (author), Littke, R. (author), Gasparik, M. (author), van Wees, J.D. (author), Nelskamp, S. (author)
Sedimentary basins in NW-Germany and the Netherlands represent potential targets for shale gas exploration in Europe due to the presence of Cretaceous (Wealden) and Jurassic (Posidonia) marlstones/shales as well as various Carboniferous black shales. In order to assess the regional shale gas prospectivity of this area, a 3D high-resolution...
article 2016
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Rozemeijer, J.C. (author), Visser, A. (author), Borren, W. (author), Winegram, M. (author), van der Velde, Y. (author), Klein, J. (author), Broers, H.P. (author)
High nitrogen (N) and phosphorus (P) fluxes from upstream agriculture threaten aquatic ecosystems in surface waters and estuaries, especially in areas characterized by high agricultural N and P inputs and densely drained catchments like the Netherlands. Controlled drainage has been recognized as an effective option to optimize soil moisture...
article 2016
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Sacchi, Q. (author), Borello, E.S. (author), Weltje, G.J. (author), Dalman, R. (author)
Current static reservoir models are created by quantitative integration of interpreted well and seismic data through geostatistical tools. In these models, equiprobable realizations of structural settings and property distributions can be generated by stochastic simulation techniques. The integration of regional (or basin) scale knowledge in...
article 2016
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Wildenborg, A.F.B. (author)
article 2016
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Bergmann, P. (author), Diersch, M. (author), Götz, J. (author), Ivandic, M. (author), Ivanova, A. (author), Juhlin, C. (author), Kummerow, J. (author), Liebscher, A. (author), Lüth, S. (author), Meekes, S. (author), Norden, B. (author), Schmidt-Hattenberger, C. (author), Wagner, F.M. (author), Zhang, F. (author)
Geophysical monitoring activities were an important component of the CO2 injection program at the Ketzin site, Germany. Here we report on the seismic and electrical resistivity tomography (ERT) measurements performed during the period of the site development and CO2 injection. Details on the site geology, the history of the CO2 injection...
article 2016
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Verweij, H. (author), Vis, G.J. (author), Imberechts, E. (author)
article 2016
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Rivière, J. (author), Pimienta, L. (author), Scuderi, M. (author), Candela, T. (author), Shokouhi, P. (author), Fortin, J. (author), Schubnel, A. (author), Marone, C. (author), Johnson, P.A. (author)
Acoustoelasticity measurements in a sample of room dry Berea sandstone are conducted at various loading frequencies to explore the transition between the quasi‐static ( ) and dynamic (few kilohertz) nonlinear elastic response. We carry out these measurements at multiple confining pressures and perform a multivariate regression analysis to...
article 2016
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Smit, J. (author), van Wees, J.D. (author), Cloetingh, S. (author)
The crustal seismic velocity structure of northwestern Europe shows a low P-wave velocity zone (LVZ) in the lower crust along the Caledonian Thor suture zone (TSZ) that cannot be easily attributed to Avalonia or Baltica plates abutting the TSZ. The LVZ appears to correspond to a hitherto unrecognized crustal segment (accretionary complex) that...
article 2016
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Vis, G.J. (author), Kasse, C. (author), Kroon, D. (author), Vandenberghe, J. (author), Jung, S. (author), Lebreiro, S.M. (author), Rodrigues, T. (author)
Quantification of sediment volumes in continental to deep ocean basins is key to understanding processes of sediment distribution in source-to-sink depositional systems. Using our own and published data we present the first quantification of sediment-volume changes in basins along the course of a major southwest European river during the...
article 2016
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Zaadnoordijk, W.J. (author)
Xin et al. (2016) present an approximate analytical solution to a variable saturated formulation of a drainage problem. They compared their solution to a saturated flow-based model and found a large discrepancy. However, the discrepancy is due to the value of the storage coefficient used and not to the model formulation.
article 2016
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Brunsvold, A. (author), Jakobsen, J.P. (author), Mazzetti, M.J. (author), Skaugen, G. (author), Hammer, M. (author), Eickhoff, C. (author), Neele, F. (author)
The IMPACTS project investigated how impurities affect the design and operation of CO2 transport and storage processes. Experimental work and modelling have advanced the state of the art in the areas of how impurities in CO2 affect thermo-physical properties, fluid flow, corrosion, and reservoir chemical reactivity. High-quality experimental...
article 2016
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van Loon, A. (author), Meijles, J. (author), Zaadnoordijk, W.J. (author)
De Kaderrichtlijn Water verplicht provincies inzicht te geven in de mate waarin de grondwaterhuishouding bijdraagt aan de instandhoudingsdoelen in Natura 2000-gebieden. Dit vraagt om een beoordelingsmethode die gedragen wordt door medewerkers, managers en bestuurders in de beleidsvelden van de KRW en Natura 2000. Dit artikel introduceert een...
article 2016
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Lourens, A. (author), van Geer, F.C. (author)
In many fields of study, and certainly in hydrogeology, uncertainty propagation is a recurring subject. Usually, parametrized probability density functions (PDFs) are used to represent data uncertainty, which limits their use to particular distributions. Often, this problem is solved by Monte Carlo simulation, with the disadvantage that one...
article 2016
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