Johan Valstar

692 total citations
20 papers, 519 citations indexed

About

Johan Valstar is a scholar working on Environmental Engineering, Civil and Structural Engineering and Ocean Engineering. According to data from OpenAlex, Johan Valstar has authored 20 papers receiving a total of 519 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Environmental Engineering, 5 papers in Civil and Structural Engineering and 5 papers in Ocean Engineering. Recurrent topics in Johan Valstar's work include Groundwater flow and contamination studies (17 papers), Soil and Unsaturated Flow (5 papers) and Reservoir Engineering and Simulation Methods (5 papers). Johan Valstar is often cited by papers focused on Groundwater flow and contamination studies (17 papers), Soil and Unsaturated Flow (5 papers) and Reservoir Engineering and Simulation Methods (5 papers). Johan Valstar collaborates with scholars based in Netherlands, Saudi Arabia and United States. Johan Valstar's co-authors include H.H.M. Rijnaarts, J.T.C. Grotenhuis, Pauline van Gaans, Ibrahim Hoteit, Mohamad El Gharamti, Ingo Leusbrock, Niels Hartog, K.G. Zuurbier, F.C. van Geer and Arnold Heemink and has published in prestigious journals such as Water Resources Research, Applied Energy and Applied Microbiology and Biotechnology.

In The Last Decade

Johan Valstar

19 papers receiving 481 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Johan Valstar Netherlands 12 355 200 103 90 69 20 519
Hans‐Jörg G. Diersch Germany 5 381 1.1× 90 0.5× 70 0.7× 83 0.9× 83 1.2× 7 551
Theo Olsthoorn Netherlands 13 404 1.1× 209 1.0× 71 0.7× 114 1.3× 67 1.0× 36 617
Klaus Mosthaf Denmark 12 364 1.0× 55 0.3× 107 1.0× 52 0.6× 131 1.9× 20 715
M. Bakr Netherlands 8 297 0.8× 55 0.3× 131 1.3× 63 0.7× 67 1.0× 13 387
T. Read United Kingdom 8 203 0.6× 94 0.5× 45 0.4× 45 0.5× 48 0.7× 9 465
Wenjing Lin China 14 167 0.5× 234 1.2× 75 0.7× 26 0.3× 87 1.3× 59 570
Willem Jan Zaadnoordijk Netherlands 13 306 0.9× 50 0.3× 64 0.6× 155 1.7× 46 0.7× 32 439
Erick R. Burns United States 11 177 0.5× 62 0.3× 33 0.3× 110 1.2× 34 0.5× 39 342
M.J. Lippmann United States 12 323 0.9× 321 1.6× 240 2.3× 24 0.3× 197 2.9× 51 716
Hillel Rubin Israel 14 259 0.7× 92 0.5× 79 0.8× 25 0.3× 129 1.9× 66 546

Countries citing papers authored by Johan Valstar

Since Specialization
Citations

This map shows the geographic impact of Johan Valstar's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Johan Valstar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Johan Valstar more than expected).

Fields of papers citing papers by Johan Valstar

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Johan Valstar. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Johan Valstar. The network helps show where Johan Valstar may publish in the future.

Co-authorship network of co-authors of Johan Valstar

This figure shows the co-authorship network connecting the top 25 collaborators of Johan Valstar. A scholar is included among the top collaborators of Johan Valstar based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Johan Valstar. Johan Valstar is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Karaoulis, M., et al.. (2022). Cross-Well Tomography Using Das and Ert for Monitoring Changes Due to Hot-Water Injection in Geothermal Wells. 83rd EAGE Annual Conference & Exhibition. 1–5. 1 indexed citations
2.
3.
Valstar, Johan, et al.. (2016). Far-field transport modelling for a repository in the Boom Clay in the Netherlands. Netherlands Journal of Geosciences – Geologie en Mijnbouw. 95(3). 337–347. 1 indexed citations
4.
Gharamti, Mohamad El, Ahmad Kadoura, Johan Valstar, Shuyu Sun, & Ibrahim Hoteit. (2014). Constraining a compositional flow model with flow‐chemical data using an ensemble‐based Kalman filter. Water Resources Research. 50(3). 2444–2467. 20 indexed citations
5.
Valstar, Johan, et al.. (2014). Optimization and spatial pattern of large-scale aquifer thermal energy storage. Applied Energy. 137. 322–337. 104 indexed citations
6.
Gharamti, Mohamad El, Johan Valstar, & Ibrahim Hoteit. (2014). An adaptive hybrid EnKF-OI scheme for efficient state-parameter estimation of reactive contaminant transport models. Advances in Water Resources. 71. 1–15. 19 indexed citations
7.
Valstar, Johan, et al.. (2013). The impact of aquifer heterogeneity on the performance of aquifer thermal energy storage. Water Resources Research. 49(12). 8128–8138. 91 indexed citations
8.
Zuurbier, K.G., Niels Hartog, Johan Valstar, Vincent Post, & Boris M. van Breukelen. (2013). The impact of low-temperature seasonal aquifer thermal energy storage (SATES) systems on chlorinated solvent contaminated groundwater: Modeling of spreading and degradation. Journal of Contaminant Hydrology. 147. 1–13. 60 indexed citations
9.
Gharamti, Mohamad El, Ibrahim Hoteit, & Johan Valstar. (2013). Dual states estimation of a subsurface flow-transport coupled model using ensemble Kalman filtering. Advances in Water Resources. 60. 75–88. 34 indexed citations
10.
Grotenhuis, J.T.C., et al.. (2012). Toluene biodegradation rates in unsaturated soil systems versus liquid batches and their relevance to field conditions. Applied Microbiology and Biotechnology. 97(17). 7887–7898. 8 indexed citations
11.
Valstar, Johan, et al.. (2012). Sensitivity analysis on parameters and processes affecting vapor intrusion risk. Environmental Toxicology and Chemistry. 31(5). 1042–1052. 31 indexed citations
12.
Valstar, Johan, et al.. (2009). Calibration of Parameter Fields Consisting of Multiple Statistical Populations. Ground Water. 48(1). 92–105. 1 indexed citations
13.
Valstar, Johan, et al.. (2008). Measurement network design including traveltime determinations to minimize model prediction uncertainty. Water Resources Research. 44(2). 12 indexed citations
14.
Valstar, Johan, et al.. (2006). Risk analysis on groundwater contamination at the megasite Port of Rotterdam. TNO Repository. 1 indexed citations
15.
Valstar, Johan, et al.. (2006). Inverse modeling of multimodal conductivity distributions. Water Resources Research. 42(3). 11 indexed citations
16.
Heemink, Arnold, et al.. (2005). Inverse modeling of groundwater flow using model reduction. Water Resources Research. 41(6). 36 indexed citations
17.
Valstar, Johan, Dennis McLaughlin, Chris B. M. te Stroet, & F.C. van Geer. (2004). A representer‐based inverse method for groundwater flow and transport applications. Water Resources Research. 40(5). 49 indexed citations
18.
Anderman, Evan R., K.L. Kipp, Mary C. Hill, Johan Valstar, & R. M. Neupauer. (2002). MODFLOW-2000, the U.S. Geological Survey modular ground-water model -- Documentation of the Model-Layer Variable-Direction Horizontal Anisotropy (LVDA) capability of the Hydrogeologic-Unit Flow (HUF) package. Antarctica A Keystone in a Changing World. 18 indexed citations
19.
Valstar, Johan. (2001). Inverse modeling of groundwater flow and transport. Research Repository (Delft University of Technology). 15 indexed citations
20.
Valstar, Johan, et al.. (2000). Characterization of a PCE contaminated site by a partitioning interwell tracer test.. IAHS-AISH publication. 249–253. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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