Dr. Jan Walstra

Geologist
Jan Walstra
Contact
Phone:
+32 (0)2 788 76 60
Key Publications
A. Laribi, Walstra, J. , Ougrine, M. , Seridi, A. , and Dechemi, N. , Use of digital photogrammetry for the study of unstable slopes in urban areas: Case study of the El Biar landslide, Algiers, Engineering Geology, vol. 187, pp. 73-83, 2014.
J. Walstra, Heyvaert, V. M. A. , and Verkinderen, P. , Mapping Late Holocene landscape evolution and human impact - a case study from Lower Khuzestan (SW Iran), in Geomorphological mapping: methods and applications, vol. 15, M. J. smith, Paron, P. , and Griffith, J. S. Amsterdam, the Netherlands: Elsevier, 2011, pp. 551-575.
J. Walstra, Chandler, J. H. , Dixon, N. , and Wackrow, R. , Evaluation of the controls affecting the quality of spatial data derived from historical aerial photographs, Earth Surface Processes and Landforms, vol. 36, no. 7, pp. 853-863, 2010.
J. Walstra, Heyvaert, V. M. A. , and Verkinderen, P. , Assessing human impact on alluvial fan development: a multidisciplinary case-study from Lower Khuzestan (SW Iran), Geodinamica Acta, vol. 23, no. 5-6, pp. 267-285, 2010.
J. Walstra, Dixon, N. , and Chandler, J. H. , Historical aerial photographs for landslide assessment: two case histories, Quarterly Journal of Engineering Geology and Hydrogeology, vol. 40, no. 4, pp. 315-332, 2007.
Key Projects

Current projects

GEPATAR – GEotechnical and Patrimonial Archives Toolbox for ARchitectural conservation in Belgium: this project aims to improve the management of built heritage in Belgium by integrating data from the archives of RBINS and RICH (Royal Institute for Cultural Heritage). Radar interferometry is used for ground stability risk assessment of monuments. Project funded by BELSPO (2014-2018).

H3O – The Campine: aim of this project is to create a transborder (hydro)geological 3D model of the Campine region, in cooperation with VITO and TNO. Project commissioned by ALBON (2015-2017).

Past projects

H3O – Roer Valley Graben: creation of a transborder (hydro)geological 3D model of the Roer Valley Graben, in cooperation with VITO and TNO. Project commissioned by ALBON and VMM (2012-2014).

Geological models of the Rupelian & Ypresian aquicludes: updating and refinement of depth models of the Boom, Tielt and Kortrijk Formations in Belgium, based on (re)interpretation of high-quality borehole data and geophysical well logs. Project commissioned by NIRAS (2013-2014).

Greater Mesopotamia, Reconstruction of Its Environment and History: reconstructing the changing environment of the Mesopotamian alluvial plain in relation to ancient civilizations. Project funded by BELSPO (at Ghent University, 2007-2011).

Professional experiences

01/09/2011 > ongoing: Geologist, GIS & Remote Sensing Expert

Royal Belgian Institute of Natural Sciences

01/04/2007 > 31/08/2011: Research Fellow

Ghent University

01/07/2006 > 31/03/2007: Consultant

ADC ArcheoProjecten
Academic training

01/04/2003 > 31/03/2006: Civil & Building Engineering

PhD
Loughborough University

01/09/1997 > 31/08/2002: Physical Geography

MSc
Utrecht University

2016

P. - Y. Declercq, Devleeschouwer, X. , Walstra, J. , Pirard, E. , Petitclerc, E. , Goemaere, E. , Dusar, M. , and Vanbrabant, Y. , Overview of the ground mouvements highlighted by the Persistent Scatterer Technique (PSI) in Belgium, in 5th International Geologica Belgica 2016 Congress, Abstract Book}, publication\_type = {type, Geologica Belgica, 2016, p. 205.
P. - Y. Declercq, Devleeschouwer, X. , Walstra, J. , Pirard, E. , Petitclerc, E. , Goemaere, E. , Dusar, M. , and Vanbrabant, Y. , Overview of the ground mouvements highlighted by the Persistent Scatterer Technique (PSI) in Belgium, in 5th International Geologica Belgica 2016 Congress, Abstract Book, Geologica Belgica, 2016, p. 205.
P. - Y. Declercq, Walstra, J. , Hayen, R. , Shimoni, M. , Barbier, C. , Derauw, D. , Van Balen, K. , Verstrynge, E. , and Urrego, L. Elvira Bej, Cartography of the Belgian monuments at risk via PSI analysis of the ground movements, the GEPATAR project, in 5th International Geologica Belgica 2016 Congress, Abstract Book, 2016, p. 123.
T. Lanckacker, Menkovic, A. , Walstra, J. , Deckers, J. , Witmans, N. , Meyvis, B. , Dusar, M. , Bogemans, F. , Vernes, R. , VanderMeulen, M. , Dekoninck, R. , Verhaert, G. , Slenter, C. , Heskens, E. , and Heyvaert, V. M. A. , H3O – a better understanding of Campine cross-border Cenozoic stratigraphy, in Geologica Belgica 5th International Meeting, Mons, Belgium., 2016.
J. Walstra and Declercq, P. - Y. , Time-series analysis of SAR images for detecting ground subsidence in the Scheldt estuary, in 5th International Geologica Belgica 2016 Congress: Abstract Book, 2016, p. 135.
P. - Y. Declercq, Walstra, J. , Hayen, R. , Shimoni, M. , Barbier, C. , Derauw, D. , Van Balen, K. , Verstrynge, E. , and Urrego, L. Elvira Bej, Cartography of the Belgian monuments at risk via PSI analysis of the ground movements, the GEPATAR project, in 5th International Geologica Belgica 2016 Congress, Abstract Book, 2016, p. 123.
J. Walstra and Declercq, P. - Y. , Time-series analysis of SAR images for detecting ground subsidence in the Scheldt estuary, in 5th International Geologica Belgica 2016 Congress: Abstract Book, 2016, p. 135.
T. Lanckacker, Menkovic, A. , Walstra, J. , Deckers, J. , Witmans, N. , Meyvis, B. , Dusar, M. , Bogemans, F. , Vernes, R. , VanderMeulen, M. , Dekoninck, R. , Verhaert, G. , Slenter, C. , Heskens, E. , and Heyvaert, V. M. A. , H3O - a better understanding of Campine cross-border Cenozoic stratigraphy, in Geologica Belgica 5th International Meeting, Mons, Belgium., 2016.
T. Lanckacker, Menkovic, A. , Walstra, J. , Deckers, J. , Witmans, N. , Meyvis, B. , Dusar, M. , Bogemans, F. , Vernes, R. , VanderMeulen, M. , Dekoninck, R. , Verhaert, G. , Slenter, C. , Heskens, E. , and Heyvaert, V. M. A. , H3O - a better understanding of Campine cross-border Cenozoic stratigraphy, in Geologica Belgica 5th International Meeting, Mons, Belgium., 2016.

2015

J. Walstra and Declercq, P. - Y. , Time-series analysis of SAR images for detection of ground subsidence in the Scheldt estuary, in Workshop Programme and Abstract Book, 2015.
J. Walstra and Declercq, P. - Y. , Using PSI for assessing ground subsidence risk in the Scheldt estuary, in Abstract Book of FRINGE 2015, 2015, p. 133.
P. - Y. Declercq, Walstra, J. , Devleeschouwer, X. , and Goemaere, E. , Cartography of the Belgian monuments at risk via PSI analysis of the ground movements, the GEPATAR project, in Abstract Book of FRINGE 2015, 2015, p. 246.
E. Garrett, De Batist, M. , Brückner, H. , Fujiwara, O. , Heyvaert, V. M. A. , Hubert-Ferrari, A. , Yokoyama, Y. , Boes, E. , Lamair, L. , Walstra, J. , Garrett, P. , and Team, T. QuakeRecNa, The QuakeRecNankai project: reconstructing past earthquakes and tsunamis along the Nankai Trough, south central Japan, in 4th International Tsunami Field Symposium, Phuket, Thailand, 2015.
V. M. A. Heyvaert and Walstra, J. , Human impact and avulsion: a long-standing relationship, in Geophysical Research Abstracts, 2015, vol. 17, pp. EGU2015-10578.
E. Garrett, Heyvaert, V. M. A. , Fujiwara, O. , De Batist, M. , Brückner, H. , Yokoyama, Y. , Walstra, J. , Riedesel, S. , Brill, D. , Miyairi, Y. , Obrochta, S. , and Team, T. QuakeRecNa, Radiometric and luminescence dating of historical tsunamis and storm deposits from Shirasuka, south central Japan, in XIX INQUA Congress, Nagoya, Japan, 2015.
E. Garrett, De Batist, M. , Boes, E. , Brückner, H. , Fujiwara, O. , Garrett, P. , Heyvaert, V. M. A. , Hubert-Ferrari, A. , Lamair, L. , Riedesel, S. , Walstra, J. , Yokoyama, Y. , and Team, T. QuakeRecNa, The QuakeRecNankai project: Palaeoseismic data for improved seismic hazard assessment along the Nankai Trough, Japan, in 1st Pan Pacific Palaeoseismology symposium, Durham, UK, 2015.
M. Dusar, De Ceukelaire, M. , and Walstra, J. , Natuursteen - Inventarisatie natuursteengebruik in stadskern Leuven, Kluwer Handboek Onderhoud, Renovatie en Restauratie, pp. 7-64, 2015.
K. P. Woodbridge, Parsons, D. R. , Heyvaert, V. M. A. , Walstra, J. , and Frostick, L. E. , Characteristics of direct human impacts on the rivers Karun and Dez in lowland south-west Iran and their interactions with earth surface movements, Quaternary International, pp. 1-20, 2015.

2014

M. Dusar, Deckers, J. , Juhász-Holterman, M. , Matthijs, J. , Menkovic, A. , Six, S. , Walstra, J. , and Westerhoff, W. , De Roerdalslenk, in Watervoerende Lagen en Grondwater in België / Aquifères et Eaux Souterraines en Belgique, A. Dassargues and Walraevens, K. Gent: Academia Press, 2014, pp. 109-145.
M. Dusar, De Ceukelaire, M. , and Walstra, J. , Natuursteengebruik als urbanisatie-indicator stadskern Leuven, in 5de VLAAMS \_ NEDERLANDSE NATUURSTEENDAG 15-16.5.2014, BRUSSEL Betekenisol gebruik van natuursteen, vol. 2014/01 - N° 316, H. De Clercq and Quist, W. Geological Survey of Belgium, 2014, pp. 109-145.
J. Walstra, Heyvaert, V. M. A. , Mortier, C. , Parsons, D. , Verkinderen, P. , and Woodbridge, K. , Human impact on alluvial fan development: can human niche construction provide a conceptual framework for long-term landscape evolution?, in Programme and Abstract Book, 3rd International Landscape Archaeology Conference, Rome, 17-20 September 2014, 2014, pp. 39-40.
J. Walstra, Heyvaert, V. M. A. , Mortier, C. , Parsons, D. , Verkinderen, P. , and Woodbridge, K. , Human impact on alluvial fan development: can human niche construction provide a conceptual framework for long-term landscape evolution?, in Programme and Abstract Book, 3rd International Landscape Archaeology Conference, Rome, 17-20 September 2014, 2014, pp. 39-40.
R. Vernes, Deckers, J. , Doornenbal, H. , Dulk, M. Den, Hummelman, J. , Menkovic, A. , Westerhoff, W. , Witmans, N. , Dusar, M. , Walstra, J. , and Reindersma, R. , The H3O-project: towards sustainable use and management of the Flemish-Dutch subsurface, in Geophysical Research Abstracts, 2014, vol. 16, pp. EGU2014-11903-1.
V. M. A. Heyvaert, Walstra, J. , and Mortier, C. , Long-term interactions between man and the fluvial environment - case of the Diyala alluvial fan, Iraq, in Geophysical Research Abstracts, 2014, vol. 16, pp. EGU2014-11047.
A. Laribi, Walstra, J. , Ougrine, M. , Seridi, A. , and Dechemi, N. , Use of digital photogrammetry for the study of unstable slopes in urban areas: Case study of the El Biar landslide, Algiers, Engineering Geology, vol. 187, pp. 73-83, 2014.
J. Deckers, Vernes, R. , Dabekaussen, W. , M Dulk, D. , Doornenbal, H. , Dusar, M. , Hummelman, J. , Matthijs, J. , Menkovic, A. , Reindersma, R. , Walstra, J. , Westerhoff, W. , and Witmans, N. , Geologisch en hydrogeologisch 3D model van het Cenozo{\"ı}cum van de Roerdalslenk in Zuidoost-Nederland en Vlaanderen (H3O – Roerdalslenk). 2014.
J. Deckers, Vernes, R. , Dabekaussen, W. , M Dulk, D. , Doornenbal, H. , Dusar, M. , Hummelman, J. , Matthijs, J. , Menkovic, A. , Reindersma, R. , Walstra, J. , Westerhoff, W. , and Witmans, N. , Geologisch en hydrogeologisch 3D model van het Cenozo{\"ı}cum van de Roerdalslenk in Zuidoost-Nederland en Vlaanderen (H3O - Roerdalslenk). 2014.
J. Walstra, Dusar, M. , and De Ceukelaire, M. , Geological model of the Ypresian Clay.. 2014.
V. M. A. Heyvaert, Bogemans, F. , Busschers, F. , Cohen, K. , Gibbard, P. , and Walstra, J. , First field campaign report linking the Scheldt to Rhine Thames Land project. 2014.

2013

V. M. A. Heyvaert, Verkinderen, P. , and Walstra, J. , Geoarchaeological Research in Lower Khuzestan: State of the Art, in Susa and Elam. Archaeological, Pilological, Historical and Geographical Perspectives, K. De Graef and Tavernier, J. Leiden: Brill, 2013, pp. 493-534.
V. M. A. Heyvaert, Verkinderen, P. , and Walstra, J. , Geoarchaeological Research in Lower Khuzestan: State of the Art, in Susa and Elam. Archaeological, Pilological, Historical and Geographical Perspectives, K. De Graef and Tavernier, J. Leiden: Brill, 2013, pp. 493-534.
V. M. A. Heyvaert, Walstra, J. , and Weerts, H. J. T. , Human impact on avulsion and fan development in a semi-arid region: examples from SW Iran, in Proceedings of the 10th International Conference on Fluvial Sedimentology, 2013.
K. P. Woodbridge, Parsons, D. , Heyvaert, V. M. A. , and Walstra, J. , The influence of Earth surface movements and human activities on the River Karun in lowland south-west Iran, in Proceedings of the 10th International Conference on Fluvial Sedimentology, 2013.
J. Walstra and Dusar, M. , Geologisch model van de Boomse Klei. KBIN-BGD, 2013.

2012

V. M. A. Heyvaert, Kaniewski, D. , Sintubin, M. , Szkornik, K. , Verstraeten, G. , and Walstra, J. , Studying the driving forces of landscape change in the surroundings of the Late Bronze Age harbor town Halla Sultan Tekke, Cyprus, in Geophysical Research Abstracts, 2012, vol. 14, pp. EGU2012-9413.
J. Walstra, Heyvaert, V. M. A. , and Verkinderen, P. , The role of rivers in ancient societies, or how man transformed the alluvial landscapes of Khuzestan (SW Iran), in Geophysical Research Abstracts, 2012, vol. 14, pp. EGU2012-9519.
J. Walstra, Heyvaert, V. M. A. , and Verkinderen, P. , Using Historical Imagery and GIS for Reconstructing the Ancient Landscapes of Khuzestan (SW Iran), in Final Programme and Abstract Book, 2nd International Landscape Archaeology Conference, Berlin, 6-9 June 2012, 2012, p. 130.
V. M. A. Heyvaert, Kaniewski, D. , Sintubin, M. , Szkornik, K. , Verstraeten, G. , and Walstra, J. , Studying the driving forces of landscape change in the surroundings of the Late Bronze Age harbor town Halla Sultan Tekke, Cyprus, in Geophysical Research Abstracts, 2012, vol. 14, pp. EGU2012-9413.
V. M. A. Heyvaert, Szkornik, K. , Walstra, J. , Kaniewski, D. , and Nys, K. , Studying the Influence of Landscape Changes on the Late Bronze Age Abandonment of the Harbour Town HST: Unravelling the Sedimentary Record of the Larnaca Salt Lake, Cyprus, in Final Programme and Abstract Book, 2nd International Landscape Archaeology Conference, Berlin, 6-9 June 2012, 2012, pp. 70-71.
J. Walstra, Heyvaert, V. M. A. , and Verkinderen, P. , The role of rivers in ancient societies, or how man transformed the alluvial landscapes of Khuzestan (SW Iran), in Geophysical Research Abstracts, 2012, vol. 14, pp. EGU2012-9519.
J. Walstra, Heyvaert, V. M. A. , and Verkinderen, P. , Using Historical Imagery and GIS for Reconstructing the Ancient Landscapes of Khuzestan (SW Iran), in Final Programme and Abstract Book, 2nd International Landscape Archaeology Conference, Berlin, 6-9 June 2012, 2012, p. 130.
V. M. A. Heyvaert, Walstra, J. , Verkinderen, P. , and Weerts, H. , The role of human interference on the channel shifting of the Karkheh River in the Lower Khuzestan plain (Mesopotamia, SW Iran), Quaternary International, vol. 251, pp. 52-63, 2012.
J. Walstra, De Ceukelaire, M. , and Dusar, M. , Kwaliteitsdocumentatie en definiëring van referentieobjecten voor de Databank Ondergrond Vlaanderen (VLA 10-2.1). Geological Survey of Belgium, 2012.

2011

J. Walstra, Heyvaert, V. M. A. , and Verkinderen, P. , Mapping Late Holocene landscape evolution and human impact - a case study from Lower Khuzestan (SW Iran), in Geomorphological mapping: methods and applications, vol. 15, M. J. smith, Paron, P. , and Griffith, J. S. Amsterdam, the Netherlands: Elsevier, 2011, pp. 551-575.

2010

J. Walstra, Chandler, J. H. , Dixon, N. , and Wackrow, R. , Evaluation of the controls affecting the quality of spatial data derived from historical aerial photographs, Earth Surface Processes and Landforms, vol. 36, no. 7, pp. 853-863, 2010.
J. Walstra, Heyvaert, V. M. A. , and Verkinderen, P. , Assessing human impact on alluvial fan development: a multidisciplinary case-study from Lower Khuzestan (SW Iran), Geodinamica Acta, vol. 23, no. 5-6, pp. 267-285, 2010.

2007

J. Walstra, Dixon, N. , and Chandler, J. H. , Historical aerial photographs for landslide assessment: two case histories, Quarterly Journal of Engineering Geology and Hydrogeology, vol. 40, no. 4, pp. 315-332, 2007.
15/12/2016 to 31/12/2020

RESPONSE – Reactive transport modelling of point source contamination in soils and groundwater

The RESPONSE project deals with the transport of point source contaminants in soils and groundwater. Point source contaminations result from historical or current activities and constitute a variety in forms, areas and contaminants involved (e.g. landfills, industrial facilities, storage tanks, disposal of hazardous waste).

01/09/2014 to 31/08/2018

GEPATAR: GEotechnical and Patrimonial Archives Toolbox for ARchitectural conservation in Belgium

The GEPATAR project started in September 2014 for a duration of four years and is funded by the BRAIN-be research programme of BELSPO. Aim of the project is to improve the management of built heritage in Belgium by integrating data from the archives of RBINS and RICH and by assessing the stability of monuments using radar interferometry.
01/10/2013 to 31/12/2017

QuakeRecNankai

This project aims to reconstruct past earthquakes along the Nankai Trough, south central Japan. The project combines fieldwork, advanced sedimentological and geochemical analyses, innovative dating techniques, tsunami inundation modeling and hazard assessment, with government policy support and public outreach.
29/04/2015 to 28/10/2017

H3O – The Campine

The general scope of this project is to solve existing connection problems between the Flemish and Dutch geological and hydrogeological layer cake models in the Campine Region by producing cross-border, up-to-date, three-dimensional geological and hydrogeological models of the Cenozoic deposits, based on existing (hydro-) geological data.
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