Ger de Lange
Senior Engineering Geologist; expert on land subsidence, earthquake hazard, marine engineering geology
+31(0)88335 7865Ger.deLange@deltares.nl LinkedIn profile
Ger de Lange is working as expert in the interpretation and application of geological and geotechnical information for national and international civil engineering. On the subject of land subsidence, his experience includes the construction of nationwide subsidence prediction maps for the Netherlands, and subsidence studies of Ho Chi Minh City, Vietnam and Jakarta, Indonesia.
Ger is a member of the IUGG national commission for Land Subsidence and Sea Level Fluctuations and from November 2014 of the UNESCO Working Group on Land Subsidence. Ger conducted research and worked on projects on regional subsidence and water management, artificial ground freezing, open pit mine stability and nuclear waste disposal. Ger developed a subsidence modeling tool incorporating time dependent processes, which has been modified at Deltares to interact with the MODFLOW hydrological models. Recently Ger worked on the hazard analysis of induced earthquakes in the Groningen Gas Field. Ger was co-developer of the Climate Adaptation Toolkit, a guideline for regional and local authorities in the implementation of climate adaptation measures.
Ger authored and co-authored papers on land subsidence, on stochastic modelling of heave risk in excavations, on nuclear waste disposal in Tertiary clays, and on artificial ground freezing.
|2010-present||Deltares||Senior Engineering Geologist/Consultant, subsidence expert|
|1997-2010||TNO, the Netherlands||Senior Engineering Geologist/Consultant, Geo-Infrastructure and Geo-Observation Team|
|1992-1997||GeoDelft, the Netherlands||Senior Engineering Geologist|
|1991-1992||Ballast Nedam Group, Saudi Arabia||Senior Geotechnical Project Manager|
|1981-1991||Fugro, the Netherlands||Engineering Geologist|
Earthquake hazard study for infrastructure above Groningen Gas Field
The Netherlands, 2013-2014
Subsidence study for the Ho Chi Minh City Flood Mitigation project.
Objective of the project: providing SCFC with flood hazard predictions to aid the planning and design of flood protection measures
Construction of a nationwide subsidence prediction map for the Delta model
The Netherlands, 2011-2012
Formulation of 50- and 100-year development scenarios for the Netherlands incorporating climate change
EU FP7 project SUBCOAST: Acquisition of data for new national subsidence map
Analysis of climate change effects with respect to subsidence and heave.
Analysis of interaction of buildings and shallow subsidence for interpretation of benchmark and InSAR movement data.
Modelling of geomechanical effects of the shutting down of a large water extraction in Delft
The Netherlands, 2006
Subsidence sensitivity mapping of the province of Zuid-Holland
The Netherlands, 2005
Interpretation of in-situ tests for nation-wide induced earthquake risk study
The Netherlands, 2002
Analysis of combined earthquake and flooding risk for the embankments of major rivers and water courses
Mission to set up project for capacity building of the Centre for Land Subsidence of China
Modelling subsidence scenarios for Krimpenerwaard and Waterlanden
The Netherlands, 2001
Analysis of relation between water management and subsidence
Subsidence in the Holocene delta of The Netherlands
Laura M. Vonhögen, Pieter J. Doornenbal, Ger De Lange, Peter A. Fokker, and Jan L. Gunnink (2010), Subsidence in the Holocene delta of The Netherlands. In: Land Subsidence, Associated Hazards and the Role of Natural Resources Development, Proceedings of EISOLS 2010, Querétaro, Mexico, 17–22 October 2010. IAHS Publ. 339, 2010, 158-163.
Disentangling Shallow and Deep Processes Causing Surface Movement
I. C. Kroon, B.-L. Nguyen, P. A. Fokker, A. G. Muntendam-Bos and G. de Lange, (2009), Disentangling Shallow and Deep Processes Causing Surface Movement, Mathematical Geosciences, Volume 41, Number 5 (2009), 571-584
Modelling Regional And Local Surface Subsidence Due To Compaction Of Unconsolidated Sediments
G.B.M. Brand, , A.J.Th. de Bruijne, E.J. de Min, M.J. Ringelberg (2000). Modelling Regional And Local Surface Subsidence Due To Compaction Of Unconsolidated Sediments, in: Carbognin L., G. Gambolati and A.I. Johnson (eds), Land Subsidence, Proc. Sixth Int. Symposium Land Subsidence, Ravenna, Vol. I and II, 384 and 433 pp, La Garangola Pub., 2000
25 Years of subsidence research in the Netherlands – The growing importance of engineering geology in coastal lowlands
25 Years of subsidence research in the Netherlands – The growing importance of engineering geology in coastal lowlands, 1998, in: Proc. Symposium Engineering geology and infrastructure, Ingeokring, Delft, pp.74-86
Influence of the 1992 Roermond Earthquake, the Netherlands, on shallow foundatons
Influence of the 1992 Roermond Earthquake, the Netherlands, on shallow foundatons (co-author), 1994, Geologie en Mijnbouw 73: 381-386
Experience with the seismic cone penetrometer in offshore site investigations
J.M. Hovem et al (1991). Experience with the seismic cone penetrometer in offshore site investigations, in: Shear waves in marine sediments, ed., Kluwer Academic Publishers, Dordrecht, pp. 275-282
Shear wave velocity measurements for offshore foundations
Shear wave velocity measurements for offshore foundations (1990), Proc. 6th Int. IAEG Congress, ed. D.G. Price, Balkema, Rotterdam, pp. 259-268
Major road cut design in rock, Muscat Capital Area, Oman
Major road cut design in rock, Muscat Capital Area, Oman (co-author)(1990), in: Mechanics of jointed and faulted rock, ed. H.P. Rossmanith, Balkema, Rotterdam, pp. 929-935
Comparison of shear wave moduli from offshore seismic cone tests and resonant column and piezoceramic bender element laboratory tests (1990), Underwater Technology, 16, no.3, pp. 13-20
|2014-present||Member of UNESCO Working Group on Land Subsidence|
|1993-present||Member of the Netherlands Subcommission on Land movement and Sea level fluctuations|