Background

1. MSc in Geology with specialisation Hydrogeology;
2. MSc (Ir) in Civil Engineering with specialisation Geo-hydro-engineering;
3. PhD in Hydrogeology.

Activities in education

Hydrogeology, Groundwater Resources Evaluation, Groundwater Modelling, Remote Sensing and GIS Applications in Groundwater Assessment, Hydrological Monitoring, Geophysics for Groundwater assessment, supervision of 34 MSc students and co-supervision of others.

Activities in research

At ITC, Dr. Maciek W. Lubczynski is a member of the research theme Water Cycle and Climate. His broad expertise in hydrogeology, hydrology, hydrogeophysics, remote sensing, numerical groundwater modelling, hydrological monitoring and in space and ground data acquisition and integration in models allowed him to make various original research contributions in four research direction lines:

1. Tree transpiration mapping by upscaling of sap flow measurements using high resolution optical and radar remote sensing;
2. Spatio-temporal assessment of groundwater fluxes i.e. recharge, groundwater transpiration and groundwater evaporation to improve groundwater balances;
3. Parameterization of subsurface with Magnetic Resonance Sounding and other hydrogeophysical techniques;
4. Development of new, modern data acquisition techniques in hydrological monitoring, remote sensing and hydrogeophysics and their integration in coupled hydrological models to improve groundwater management.

Fig. 1: Concept of modern data acquisition and integration in hydrology.

Current, ongoing PhD research project supervised by Dr Lubczynski

• Leonardo Reyes Acosta (from Colombia). Plant-groundwater interactions in water limited environments. Collaboration with University of Salamanca and with Instituto Nacional de Recursos Biológicos (Portugal).
• Alain Pascal Frances (from France). Improving groundwater model's reliability: data acquisition, data integration and coupling models approach. Collaboration with Technical University of Lisbon and Geological Survey of Portugal.
• Tanvir Hassan (from Bangladesh). Impact of climate change on groundwater resources. Collaboration with Free University of Brussels.
• Enrico Balugani (from Italy). Partitioning of subsurface evaporation into unsaturated and saturated zone components. Collaboration with Wageningen University and University of Salamanca.
• Guido Baroncini Turricchia (from Italy). Improving recharge assessment by integration of radar soil moisture in coupled hydrological models. Collaboration with University of Salamanca and Vienna University.
• Chandra Ghimire (from Nepal). Hydrological impact of reforesting degraded lands in the Middle Mountains of Nepal. Collaboration with Free University of A-dam and UNESCO University of Dundee.

Completed PhD research projects supervised by Dr Lubczynski

• Obolokile Thothi Obakeng (from Botswana). Soil moisture dynamics and evapotranspiration at the fringe of the Botswana Kalahari, with emphasis on deep rooting vegetation, 2007. Library of ITC, University of Twente.
• Diana Chavarro Rincon (from Colombia). Tree transpiration mapping from upscaled sap flow in the Botswana Kalahari, 2009. Library of ITC, University of Twente.

Completed PhD research projects co-supervised by Dr Lubczynski

• Zengshan Duan (from China). Optimization modelling of a river-aquifer system with technical interventions - a case study for the Huangshui River and the costal Aquifer, Shandong, China, 1996. Library of ITC, University of Twente.
• Tenalem Ayenew Tegaye (from Ethiopia). The hydrogeological system of the Lake District Basin, Central Main Ethiopian Rift, 1998. Library of ITC, University of Twente.
• Piotr Wolski (from Poland). Application of reservoir modelling to hydrotopes identified by remote sensing, 1999. Library of ITC, University of Twente.

Selected milestone research achievements

1. Hydrogeological interpretation of the Magnetic Resonance Sounding signal (new, promising hydrogeophysical technique) in terms of aquifer storage and transmissivity;
2. Hydrogeophysical data integration (MRS, GPR, ERT, TDEM+EM) in numerical distributed models to improve reliability groundwater management;
3. Isotopic (LiCl) assessment and confirmation of very deep (even exceeding 70m depth) tree rooting systems in Kalahari;
4. Hydrological zonation of the thick Kalahari unsaturated zone using stable isotopes and deep monitoring profiles;
5. Quantification of the role of Kalahari trees in the Kalahari water balance by using sap flow measurements;
6. Development of a new method called Cyclic Heat Dissipation (CHD) to account for natural thermal gradient in thermal dissipation probe (TDP) sap flow measurements;
7. Sourcing of tree sap flow measurements into unsaturated zone and groundwater components and their integration in distributed models;
8. Development of remote sensing method to upscale individual tree sap flow measurements to map tree transpiration.

Current research projects

The current research of Dr. Lubczynski concentrates on hydrogeological and ecohydrological problems of dry, water limited environments. He currently carries on field investigations in Sardon and Carrizal catchments in Spain and in Jikhu Khola catchment in Nepal.

Fig. 2: Study areas in Spain: Sardon area developed by ITC-University of Twente and Carrizal area
developed by University of Salamanca, collaborator of ITC.

Sardon catchment (Spain) - the study area (~80 km2) is equipped with hydrological monitoring network since 1996. This particular study area was selected as the research study area (and fieldwork area for ITC students) because of:

• Mediterranean climate typical for water limited environments;
• natural environment with negligible human impact so for example suitable for studying climate change impact on water resources;
• savanna type of vegetation with two different oak tree species (deciduous Quercus pyrenaica and evergreen Quercus ilex) allowing to study impact of trees on catchment water balance;
• uniform geology - weathered and fractured granite;
• shallow groundwater table allowing for relatively easy installation of piezometers and monitoring of groundwater;
• proximity of academic town of Salamanca providing opportunity for scientific collaboration;
• logistically convenient.

A)	B)	C)

Fig. 3: Field activities in the Sardon catchment:
A - Eddy covariance tower to monitor total evapotranspiration;
B - Monitoring of sap flow in oak tree using Heat Field Deformation (HFD) and Thermal Dissipation Probe (TDP) methods;
C - Multi-parametric (head, temperature, EC) monitoring of unsaturated zone and groundwater table (nearby piezometer) to determine recharge and groundwater evapotranspiration.

The research objectives of the current Sardon research are formulated in the four PhD studies of Leonardo Reyes Acosta, Alain Pascal Frances, Tanvir Hassan and Enrico Balugani. The current monitoring network focuses on monitoring of: groundwater (water table and EC/Cl), unsaturated zone profiles (soil moisture, matric potential, temperature and EC/CL), microclimatic data (2 standard PET towers and one Eta eddy covariance tower) and sap flow of the trees (applying TDP and HFD methods). The research group of Dr Lubczynski focuses on integration of the temporal, field monitoring data with spatial remote sensing data such as: subsurface non-invasive hydrogeophysical methods (magnetic resonance sounding, electric resistivity tomography, ground penetrating radar and electromagnetic methods) and satellite and airborne images, all to improve the reliability of hydrological models. For joint projects and research collaboration please contact lubczynski@itc.nl.

Carrizal catchment (Spain, Fig. 2 & 4) - ~73 km2; heavily affected by human activity; large pressure on agricultural practices resulted in deforestation, decline of river discharge and overexploitation of groundwater utilized mainly for the irrigation purpose. The aim of the Carrizal research is formulated in the PhD study of Guido Baroncini Turricchia. The Carrizal catchment has monitoring network consisting of micro-climatic towers, soil moisture, river discharge and groundwater table monitoring. Besides, an extensive MRS measurements were carried out in Carrizal area to provide hydrogeological parameters for the numerical distributed groundwater model.

Fig. 4: Carrizal landscape

Jikhu Khola catchment (Nepal) - ~111 km2, reforested land; thin layer of unconsolidated rocks underlain by sedimentary and metamorphic rocks. The main objective of this study is to quantify the hydrological impact of reforestation - all the objectives are formulated in the PhD study of Chandra Ghimire. The methodology proposed involve monitoring of water balance components such as rainfall, evapotranspiration, interception, transpiration of trees, surface runoff, river discharge, unsaturated zone moisture, soil matric potential and groundwater level and their modeling using DHSVM model.

Fig. 5: Jikhu Khola

Former or less active research projects with active data processing

Botswana - 5 years Kalahari Research Project (2000-5); along this project two PhD students were supervised by Dr. Lubczynski. These were Dr. O. Obakeng and Dr. D. Chavarro who completed their studies in 2007 and 2009 respectively. The Kalahari research was carried out in collaboration with the Geological Survey of Botswana and concentrated in Serowe study area. The Kalahari research aimed at evaluation of the role of the transpiration of Kalahari vegetation upon groundwater recharge and overall water balance. The extensive hydrological monitoring, that included also sap flow measurements, proved large role of the Kalahari plants in water balance and also their extraordinary survival skills emphasized by very deep rooting systems, for some species exceeding even 70m. The data processing and paper writing is still continued.

Portugal - research on the "Application of modern data acquisition methods to improve reliability of numerical models" was carried out mainly in the Pisoes area; this area is strategic in Portugal because of: (i) fertile soils implying extensive agricultural practices and irrigation and (ii) productive gabro aquifer overlain by thin clay layer constraining recharge. The groundwater recharge was the main objective of this study. A combination of hydrogeophysical methods, very high resolution QuickBird image interpretation and hydrological monitoring allowed defining thickness and spatial distribution of the clay layer, then groundwater recharge and finally sustainability of groundwater resources by using coupled saturated and unsaturated zone model. This research was carried out in collaboration with the Geological Survey of Portugal and Technical University of Lisbon. The data processing and paper writing is still continued.

Poland - research on the "Application of modern data acquisition methods to improve reliability of numerical models" has been carried out in three study areas, Turawa lake catchment, Swidnica catchment and Ziebice catchment. The Turawa catchment and the monitoring network in this area was focused on the impact of the lake upon groundwater in adjacent areas and in the latter two catchments on the assessment of the water resources in the hydrogeologically complex, multilayered aquifers. This research has been carried out in collaboration with Wroclaw University. The data processing and paper writing is still continued.

Consulting

Apart of research and education, Dr. Lubczynski supervised many consulting projects, most of them related to groundwater modeling in Botswana and Poland.

Other

Dr. Lubczynski is a member of the Editorial Board of the Elsevier Journal of Applied Geophysics and serves as a reviewer for various international journals, among which the Journal of Hydrology Hydrogeology Journal, the Ground Water and Water Resources Research Near Surface Geophysics and the Journal of Applied Geophysics.
Dr. M.W. Lubczynski is a member of International Association of Hydrogeologists, active in GDE (Groundwater Dependent Ecosystem) section and also a member of NGWA. Dr. Lubczynski attended many conferences also as keynote speaker: at the NATO Conference in Canakkale (Turkey) 2005, at the IAH Congress in Lisbon (Portugal) 2007, at the World Water Forum in Kyrenia (Cyprus) 2008, at the NATO Conference in Izmir (Turkey) 2010 and at the IAH Congress in Krakow (Poland) 2010.

Recent publications (since 2003)

ISI Journal Articles

Mahmoudzadeh, M.R., Francés, A.P., Lubczynski, M.W. and ... [et al.] (2012) Using ground penetrating radar to investigate the water table depth in weathered granites : Sardon case study, Spain. In: Journal of applied geophysics, 79 (2012) pp. 17-26. Full text | Full text

Francés, A.P. and Lubczynski, M.W. (2011) Topsoil thickness prediction at the catchment scale by integration of invasive sampling, surface geophysics, remote sensing and statistical modeling. In: Journal of hydrology, 405 (2011)1-2 pp. 31-47. Full text | Full text

Lubczynski, M.W. (2009) The hydrogeological role of trees in water - limited environments. In: Hydrogeology journal : official journal of the International Association of Hydrogeologists : IAH, 17 (2009)1 pp. 247-259. Full text | Full text

Lambot, S., Slob, E., Chavarro Rincon, D.C., Lubczynski, M.W. and ... [et al.] (2008) Measuring soil surface water content in irrigated areas of southern Tunisia using full - waveform inversion of proximal GPR data. In: Near surface geophysics, 6(2008), pp. 403-410. Full text

Tweed, S.O., Leblanc, M., Webb, J.A. and Lubczynski, M.W. (2007) Remote sensing and GIS for mapping groundwater recharge and discharge areas in salinity prone catchments, Southeastern Australia. In: Hydrogeology journal : official journal of the International Association of Hydrogeologists : IAH, 15 (2007)1 pp. 75-96. Full text | Full text

Srivastav, S.K., Lubczynski, M.W. and Biyani, A.K. (2007) Upscaling of transmissivity, derived from specific capacity : a hydrogeomorphological approach applied to the Doon Valley aquifer system in India. In: Hydrogeology journal : official journal of the International Association of Hydrogeologists : IAH, 15 (2007)7 pp. 1251-1264. Full text | Full text

Lubczynski, M.W. and Roy, J. (2007) Use of MRS for hydrogeological system parameterization and modelling. In: Boletin Geologico y Minero, 118(2007)3, pp. 509-530. Full text | Full text

Lubczynski, M.W. and Gurwin, J. (2005) Integration of various data sources for transient groundwater modeling with spatio - temporally variable fluxes : Sardon study case, Spain. In: Journal of hydrology, 306 (2005)1-4 pp. 71-96. Full text | Full text

Gurwin, J. and Lubczynski, M.W. (2005) Modeling of complex multi - aquifer systems for groundwater resources evaluation : Swindnica study case Poland. In: Hydrogeology journal : official journal of the International Association of Hydrogeologists : IAH, 13 (2005)4 pp. 627-639. Full text | Full text

Lubczynski, M.W. and Roy, J. (2005) MRS contribution to hydrogeological system parameterization. In: Near surface geophysics, 3(2005)3, pp. 131-139. Full text

Roy, J. and Lubczynski, M.W. (2005) MRS multi - exponential decay analysis : aquifer pore - size distribution and vadose zone characterization. In: Near surface geophysics, 3(2005)4, pp. 287-298. Full text

Lubczynski, M.W. and Roy, J. (2004) Magnetic resonance sounding : new method for ground water assessment. In: Ground water, 42 (2004)2 pp. 291-303. Full text

Lubczynski, M.W. and Roy, J. (2003) Hydrogeological interpretation and potential of the new magnetic resonance sounding, MRS, method. In: Journal of hydrology, 283 (2003)1-4 pp. 19-40. Full text

Roy, J. and Lubczynski, M.W. (2003) The magnetic resonance sounding technique and its use for groundwater investigations. In: Hydrogeology journal : official journal of the International Association of Hydrogeologists : IAH, 11 (2003)4 pp. 455-465. Full text

Other Refereed Journal Articles

Kimani, J.N., Hussin, Y.A., Lubczynski, M.W., Chavarro Rincon, D.C. and Obakeng, O.T. (2007) Mapping savannah trees in Kalahari using high resolution remotely sensed images and object - oriented classification. In: International journal of geoinformatics, 3 (2007)2 pp. 29-39. Full text

Book Chapters

Lubczynski, M.W. (2011) Groundwater evapotranspiration : underestimated role of tree transpiration and bare soil evaporation in groundwater balances of dry lands. In: Climate change and its effects on water resources : issues of national and global security : proceedings of the NATO advanced research workshop on effect of climate change on water resources, Izmir, Turkey, 1-4 September 2010 / editor A. Baba, , ... [et al.]. - Dordrecht : Springer, 2011. - 302 p. - (NATO Science for Peace and Security Series C: Environmental Security) ISBN 978-94-007-1143-3. pp. 183-190. Full text | Full text

Stasko, S., Tarka, R. and Lubczynski, M.W. (2008) Groundwater recharge in mountainous terrains : case study from Sudeten mountains in SW Poland. In: Global groundwater resources and management : selected papers from the 33rd International Geological Congress (IGR), Oslo, Norway, 6-14 August 2008 / ed. by B.S. Paliwal. Jodhpur : Scientific Publishers, 2008. ISBN 978-81-7233-619-6. pp. 451-474. Full text

Lubczynski, M.W. (2006) Fluxes, numerical models and sustainability of groundwater resources. In: Sustainability of groundwater resources and its indicators : proceedings of a symposium held at Foz do Iguaçu, Brazil, April 2005 / ed. by Webb, B. ... et al. Wallingford : IAHS, 2006 (IAHS publications ; 302) ISBN 1-90150243-0. pp. 67-77. Full text

Lubczynski, M.W. (2006) Groundwater fluxes in arid and semi - arid environments. In: Groundwater and ecosystems : proceedings of the NATO advanced research workshop on groundwater and ecosystems, Canakkale, Turkey, 5-7 September 2005 / ed. by A. Baba, K.W.F. Howard and O. Gunduz. Berlin etc. : Springer, 2006. ISBN 1-4020-4736-3. (NATO Science series IV : Earth and environmental sciences ; 20) pp. 225-236. Full text

Hussin, Y.A., Lubczynski, M.W., Obakeng, O.T. and Chavarro Rincon, D.C. (2004) Designing and implementing an aircraft survey mission using high - resolution digital mulit - spectral camera for vegetation mapping for upscaling transpiration of Serowe, Botswana. In: Water resources of arid areas : proceedings of the international conference on water resources of arid and semi arid regions of Africa WRASRA, August 3-6th, 2004, Gaborone, Botswana. / ed. by Stephenson, D., Shemang, E.M., Chaoka, T.R. Rotterdam: Balkema, 2004. ISBN 0415359139 pp. 341-346. Full text

Fregoso, A., Lubczynski, M.W., Mapanda, W., Ziwa, C., Keeletsang, M., Chavarro Rincon, D.C. and Obakeng, O.T. (2004) Dry season transpiration assessment of groundwater - dependent vegetation : Serowe study case, Botswana. In: Proceedings of the XXXIII congress IAH and 7th congress ALSHUD : Groundwater flow understanding, from local to regional scales, 11-15 October, Zacatecas, Mexico, 2004. pp. 61-69. Full text

Lubczynski, M.W., Fregoso, A., Mapanda, W., Ziwa, C., Keeletsang, M., Chavarro Rincon, D.C. and Obakeng, O.T. (2004) Dry seasonal Kalahari sap flow measurements for tree transpiration mapping : Serowe study case, Botswana. In: Water resources of arid areas : proceedings of the international conference on water resources of arid and semi arid regions of Africa WRASRA, August 3-6th, 2004, Gaborone, Botswana. / ed. by Stephenson, D., Shemang, E.M., Chaoka, T.R. Rotterdam: Balkema, 2004. ISBN 0415359139 pp. 541-546. Full text

Hussin, Y.A., Chavarro Rincon, D.C., Lubczynski, M.W. and Obakeng, O.T. (2004) Mapping vegetation for upscaling transpiration using high resolution optical satellite and aircraft images in Serowe, Botswana. In: Water resources of arid areas : proceedings of the international conference on water resources of arid and semi arid regions of Africa WRASRA, August 3-6th, 2004, Gaborone, Botswana. / ed. by Stephenson, D., Shemang, E.M., Chaoka, T.R. Rotterdam: Balkema, 2004. ISBN 0415359139 pp. 239-246. Full text

Lubczynski, M.W. and Obakeng, O.T. (2004) Monitoring and modeling of fluxes on Kalahari : setup and strategy of the Kalahari monitoring project : Serowe study case, Botswana. In: Water resources of arid areas : proceedings of the international conference on water resources of arid and semi arid regions of Africa WRASRA, August 3-6th, 2004, Gaborone, Botswana. / ed. by Stephenson, D., Shemang, E.M., Chaoka, T.R. Rotterdam: Balkema, 2004. pp. 271-278. Full text

Obakeng, O.T. and Lubczynski, M.W. (2004) Monitoring of evapotranspiration on Kalahari, Serowe case study, Botswana. In: Water resources of arid areas : proceedings of the international conference on water resources of arid and semi arid regions of Africa WRASRA, August 3-6th, 2004, Gaborone, Botswana. / ed. by Stephenson, D., Shemang, E.M., Chaoka, T.R. Rotterdam: Balkema, 2004. pp. 285-296. Full text

Magombedze, L.M., Frengstad, B. and Lubczynski, M.W. (2004) Spatial variation of groundwater recharge in a semi - arid environment : Serowe, Botswana. In: Water resources of arid areas : proceedings of the international conference on water resources of arid and semi arid regions of Africa WRASRA, August 3-6th, 2004, Gaborone, Botswana. / ed. by Stephenson, D., Shemang, E.M., Chaoka, T.R. Rotterdam: Balkema, 2004. pp. 271-278. Full text

Monographs/Edited Books

Plata, J.L. (editor) , Legchenko, A. (editor) , Lubczynski, M.W. (editor) and Yaramanci, Y. (editor)  (2007) Magnetic resonance sounding : a reality in applied hydrogeophysics : special issue of: Boletín Geológico y Minero, 118(2007)3. Madrid, Instituto Geologico y Minero de Espana (IGME), 2007.

PhD Theses

Chavarro Rincon, D.C., Su, Z. (Promotor) and Lubczynski, M.W. (assistant promotor)  (2009) Tree transpiration mapping from upscaled sap flow in the Botswana Kalahari. Enschede, ITC, University of Twente, 2009. ITC Dissertation 159, ISBN: 978-90-6164-273-2. Full text

Obakeng, O.T., de Vries, J.J. (Promotor) and Lubczynski, M.W. (co-promotor)  (2007) Soil moisture dynamics and evapotranspiration at the fringe of the Botswana Kalahari, with emphasis on deep rooting vegetation. Amsterdam, Vrije Universiteit Amsterdam, 2007. ITC Dissertation 141, ISBN: 90-6164-254-X. Full text

Conference Proceedings (full papers)

Balugani, E., Reyes-Acosta, J.L., van der Tol, C., Francés, A.P. and Lubczynski, M.W. (2011) Partitioning and sourcing of dry season ET fluxes at the footprint of the eddy covariance tower in sardon semi - arid location in Spain + poster. In: Estudios en la zona no saturada del suelo : volumen X : ZNS11 proceedings, 19-21 October 2011, Salamanca, Spain : e-book / editor J.M. Fernández, , N.S. Martin. - Salamanca : Universidad de Salamanca, 2011. - 370 p. ISBN 978-84-694-6642-1. pp. 297-302 + 1 p. Full text | Full text

Reyes-Acosta, J.L. and Lubczynski, M.W. (2011) Spatial assessment of transpiration, groundwater and soil - water uptake by oak. In: Estudios en la zona no saturada del suelo : volumen X : ZNS11 proceedings, 19-21 October 2011, Salamanca, Spain : e-book / editor J.M. Fernández, , N.S. Martin. - Salamanca : Universidad de Salamanca, 2011. - 370 p. ISBN 978-84-694-6642-1. pp. 65-70. Full text

Francés, A.P., Reyes-Acosta, J.L., Balugani, E., van der Tol, C. and Lubczynski, M.W. (2011) Towards an improved assessment of the water balance at the catchment scale : a coupled model approach + powerpoint. In: Estudios en la zona no saturada del suelo : volumen X : ZNS11 proceedings, 19-21 October 2011, Salamanca, Spain : e-book / editor J.M. Fernández, , N.S. Martin. - Salamanca : Universidad de Salamanca, 2011. - 370 p. ISBN 978-84-694-6642-1. pp. 321-326 + 10 slides. Full text | Full text

Mahmoudzadeh, M.R., Lambot, S., Francés, A.P., Mohammed, A.A. and Lubczynski, M.W. (2010) Water table detection by GPR in Sardon, Salamanca, Spain. In: Ground Penetrating Radar, GPR, 2010 : proceedings of the 13th International Conference on GPR, 21-25 June 2010, Lecce, Italy. IEEE, 2010. ISBN 978-1-4244-4604-9 5 p. Full text | Full text

Mabowe, B.R., de Gier, A., Hussin, Y.A., Lubczynski, M.W. and Obakeng, O.T. (2006) Estimation of above ground biomass of dry savannah trees in Serowe savannah woodland, Botswana using remote sensing and GIS. In: AARSE 2006 : Proceeding of the 6th AARSE international conference on earth observation and geoinformation sciences in support of Africa's development, 30 October - 2 November 2006, Cairo, Egypt. Cairo : The National Authority for Remote Sensing and Space Science (NARSS), 2006. ISBN 1-920-01710-0. 9 p. Full text

Kimani, J., Hussin, Y.A., Lubczynski, M.W., Chavarro Rincon, D.C. and Obakeng, O.T. (2006) High - resolution remote sensing and object - oriented classification of savannah vegetation for mapping transpiration. In: AARSE 2006 : Proceeding of the 6th AARSE international conference on earth observation and geoinformation sciences in support of Africa's development, 30 October - 2 November 2006, Cairo, Egypt. Cairo : The National Authority for Remote Sensing and Space Science (NARSS), 2006. ISBN 1-920-01710-0. 9 p. Full text

Demisse, G.B., Hussin, Y.A., van Duren, I.C., Lubczynski, M.W. and Obakeng, O.T. (2006) Remote sensing and geostatistics for the assessment of spatial distribution of savannah woody species biodiversity for upscaling transpiration in Serowe, Botswana. In: AARSE 2006 : Proceeding of the 6th AARSE international conference on earth observation and geoinformation sciences in support of Africa's development, 30 October - 2 November 2006, Cairo, Egypt. Cairo : The National Authority for Remote Sensing and Space Science (NARSS), 2006. ISBN 1-920-01710-0. 8 p. Full text

Lubczynski, M.W. and ... [et al.] (2006) The role of the MRS in hydrogeological research. In: MRS 2006 : Proceedings of the 3rd international workshop on magnetic resonance sounding method : a reality in applied hydrogeophysics, 25-27 October 2006, Madrid, Spain. Madrid : Instituto Geológico Y Minero de España (IGME), 2006. ISBN 84-7840-644-1. 6 p. Full text

Lubczynski, M.W. (2004) Transient groundwater modeling : the best but also the most demanding tool for groundwater management. In: Proceedings of the XXXIII congress IAH and 7th congress ALSHUD : Groundwater flow understanding, from local to regional scales, 11-15 October, Zacatecas, Mexico, 2004. paper T5-19. Full text

Paralta, E.A., Oliveira, M.M., Lubczynski, M.W. and Ribeiro, L.F. (2003) Avaliaçâo da recarga do sistema aquífero dos Gabros de Beja segundo critérios múltiplos - disponibilidades hídricas e implicaçôes agro-ambientais. In: 6 Silusba - Simpósio de hidráulica e recursos hidricos dos paises de lingua oficial portuguesa, Novembro 2003, Cabo Verde, pp. 501 - 516. Full text

Roy, J. and Lubczynski, M.W. (2003) The case of an MRS - elusive second aquifer. In: Proceedings of the 2nd international MRS workshop on the magnetic resonance sounding method applied to non-invasive groundwater investigations, 19-21 November 2003, Orléans, France. pp. 105-108. Full text

Lubczynski, M.W. and Roy, J. (2003) MRS contribution to hydrogeological parameterization. In: Proceedings of the 2nd international MRS workshop on the magnetic resonance sounding method applied to non-invasive groundwater investigations, 19-21 November 2003, Orléans, France. pp. 73-76. Full text

Scientific and Professional Publications

Meijerink, A.M.J., Bannert, D., Batelaan, O., Lubczynski, M.W. and Pointet, T. (2007) Remote sensing applications to groundwater. Paris, United Nations Educational Scientific and Cultural Organization (UNESCO), 2007. IHP-VI Series on Groundwater 16, Full text | Full text

Presentations

Francés, A.P., Reyes-Acosta, J.L., Balugani, E., van der Tol, C. and Lubczynski, M.W. (2011) Assessment of catchment water balance using distributed and transient coupled models of the unsaturated and saturated zones. Presented at ModelCare 2011 : models : repositories of knowledge, 18-22 September 2011, Leibzig, Germany. 2 p. Full text

Batelaan, O. and Lubczynski, M.W. (2011) Groundwater recharge and groundwater discharge : the ecological importance of speaking the same language : abstract. In: HydroEco 2011, Hydrology and ecology : ecosystems, groundwater and surface water : pressures and options, Vienna, Austria, 2-5 May 2011 : volume of abstracts / ed. by H.P. Nachtnebel and K. Kovar. Abstract number 226, pp. 98. Full text | Full text

Reyes-Acosta, J.L., Vandegehuchte, M., Steppe, K. and Lubczynski, M.W. (2011) Natural temperature gradients bias on Thermal Dissipation, TDP, probes and Heat Field Deformation sensors (HFD) : dynamics and correction by applying a cyclic thermal dissipation methodology : powerpoint. Presented at 8th international workshop on sap flow, Volterra, Italy, 8-12 May 2011.21 slides. Full text

Reyes-Acosta, J.L. and Lubczynski, M.W. (2011) Spatial assessment of transpiration, groundwater and soil - water uptake by oak trees during dry - season at a semi - arid open - forest in Salamanca, Spain : powerpoint. Presented at 8th international workshop on sap flow, Volterra, Italy, 8-12 May 2011. 20 slides. Full text

Rwasoka, D.T., Reyes-Acosta, J.L., van der Tol, C., Su, Z. and Lubczynski, M.W. (2010) Evapotranspiration in water limited environments : up - scaling from the crown canopy to the eddy flux footprint + poster. In: Geophysical Research Abstracts, 12(2010) EGU2010-15540, EGU general assembly 2010. 1 p. Full text | Full text | Full text

Francés, A.P., Mohammed, A.A., Mahmoudzadeh Ardekani, M.R., Lambot, S. and Lubczynski, M.W. (2010) Hydrogeophysical characterization and data integration for the Sardon catchment hard rock aquifer, Spain. In: Geophysical Research Abstracts, 12(2010) EGU2010-6650-2, EGU general assembly 2010. 1 p. Full text | Full text

Lubczynski, M.W. (2010) Improved concept of groundwater balances : underestimated role of tree transpiration and bare soil evaporation in water limited environments : abstract. In: NATO advanced research workshop on climate change and its effects on water resources : issues of national and global security, 1-4 September 2010, Izmir, Turkey : abstract book / editor A. Baba, , G. Tayfur, , I. Sahin. - [s.l.] : [s.n.], 2010. pp. 17-18. Full text

Lubczynski, M.W. (2010) New hydrogeophysical method for hydrogeologists called MRS for quantification of water in subsurface and groundwater management : abstract. In: XXXVIII IAH congress : groundwater quality sustainability, Krakow, Poland, 12-17 September 2010 : abstract book : volume II + extended abstracts cd-rom / ed. by A. Zuber, J. Kania and E. Kmiecik. - : University of Silesia, 2010. book: pp. 506, cd-rom: pp. 1513-1514. Full text

Reyes-Acosta, J.L. and Lubczynski, M.W. (2010) Sap - flow measurements combining sap - flux density radial profiles with punctual sap - flux density measurements in oak trees + powerpoint. In: Geophysical Research Abstracts, 12(2010) EGU2010-6097-1, EGU general assembly 2010. 1 p. Full text | Full text | Full text

Francés, A.P., Berhe, E. and Lubczynski, M.W. (2010) Spatio - temporal groundwater recharge assessment using a lumped - parameter distributed model of the unsaturated zone, pyEARTH-2D. In: Geophysical Research Abstracts, 12(2010) EGU2010-6627-2, EGU general assembly 2010. 2 p. Full text | Full text

Francés, A.P. and Lubczynski, M.W. (2010) Topsoil thickness mapping at watershed scale by integration of field survey, geophysics and remote sensing methods. In: Geophysical Research Abstracts, 12(2010) EGU2010-7251-2, EGU general assembly 2010. 2 p. Full text | Full text

Lubczynski, M.W. (2010) Underestimated role of tree transpiration and groundwater evaporation in groundwater balancing and modelling : abstract keynote lecture. In: XXXVIII IAH congress : groundwater quality sustainability, Krakow, Poland, 12-17 September 2010 : abstract book : volume II + extended abstracts cd-rom / ed. by A. Zuber, J. Kania and E. Kmiecik. - : University of Silesia, 2010. book: pp. 825-826, cd-rom: pp. 11-12. Full text

Chavarro Rincon, D.C., Obakeng, O.T., Roy, J. and Lubczynski, M.W. (2008) Dry season sap flow patterns of nine woody species in the Botswana Kalahari : mechamisms ensuring survival : abstract. In: 7th international workshop on sap flow, Seville, Spain, 21-24 October 2008 : book of abstracts. pp. 78. Full text | Full text

Chavarro Rincon, D.C., Roy, J. and Lubczynski, M.W. (2008) Dry season tree transpiration assessment from upscaled sap flow in the Botswana Kalahari : powerpoint. Presented at the International Workshop: Ecohydrology and Ecophysiology of Plants in Water-Limited Environments, Perth, Australia, 15-19 September 2008. Full text

Lubczynski, M.W. (2008) Hydrogeological role of trees in a water limited ecosystem : state of the art and perspectives : abstract. In: Proceedings the XXXVI IAH congress : integrating grounwater, science and human well-being, 26 October - 1 November 2008, Toyama, Japan. 1 p. Full text

Lubczynski, M.W. (2008) The hydrogeological role of trees in water limited environments : abstract. Presented at the regional meeting on water in Mediteranea basins, 9-11 October, 2008, Lefkosa, Cyprus. 1 p. Full text

Chavarro Rincon, D.C., Roy, J. and Lubczynski, M.W. (2008) An improved method for the correction of natural thermal gradients in thermal dissipation probes measurements : abstract. In: 7th international workshop on sap flow, Seville, Spain, 21-24 October 2008 : book of abstracts. pp. 33. Full text | Full text

Lubczynski, M.W. (2008) New physically based method called MRS in quantificiation of water in subsurface : abstract. In: Proceedings of the XXXVI IAH congress : integrating grounwater, science and human well-being, 26 October - 1 November 2008, Toyama, Japan. 2 p. Full text

Lubczynski, M.W. (2008) The role of sap flow measurements in hydrogeology : abstract. In: 7th international workshop on sap flow, Seville, Spain, 21-24 October 2008 : book of abstracts. pp. 77. Full text | Full text

Lubczynski, M.W., Chavarro Rincon, D.C. and Roy, J. (2008) Sap flow and conductive sap wood area validation applying various experimental techniques : abstract. In: 7th international workshop on sap flow, Seville, Spain, 21-24 October 2008 : book of abstracts. pp. 35. Full text | Full text

da Costa, A.T.M., Frances, A., Lubczynski, M.W. and ... [et al.] (2006) Modelo númerico de fluxo em regime transitório: o caso do aquífero Moura - Ficalho. Presented at 8º Congresso da Água - XII SILUBESA Simpósio Luso-Brasileiro de Engenharia Sanitária e Ambiental : Na Via da Sustentabilidade, Figueira da Foz, Portugal, 13 a 17 de Março de 2006. 15 p. Full text

Obakeng, O.T. and Lubczynski, M.W. (2006) Recharge and evapotranspiration assessment in Kalahari : abstract. In: Eos : transactions of the American Geophysical Union, 87(2006)52, Fall meeting supplement : abstract no. H31A-1405. 1 p. Full text | Full text

Tweed, S.O., Leblanc, M., Webb, J.A., Lubczynski, M.W. and ... [et al.] (2006) Remote sensing and GIS techniques to map groundwater recharge and discharge : abstract. In: Eos : transactions of the American Geophysical Union, 87(2006)52, Fall meeting supplement : abstract no. H41E-0448. 1 p. Full text | Full text

Roy, J. and Lubczynski, M.W. (2003) Test of the MRS technique in Southern Africa : abstract. In: Proceedings of the 9th European meeting of enviromental and engineering geophysics EEGS 2003 : Prague, August 31 - September 4. 2003, p. 4. Full text