Bjørn Syvert Frengstad
About
I am a professor of engineering geology with an emphasis on soil, hydrogeology and ground source heating. Since 2020, I have been research group leader for Engineering Geology and Rock Mechanics and from 2024 I am leader of the Natural Hazards Group under NTNU's strategic reseach area Civil Security. Before I came to NTNU in 2017, I have worked for 19 years as a researcher at the Geological Survey of Norway, including five years as head of the Groundwater Team. From 1990 to 1995 I was a scientific assistant and amanuensis at NTH and from 1998 to 2001 I was a research fellow at NTNU.
Research
My research and project experience is within a relatively broad area of applied geology, including:-
- Hydrogeology in sediments and rocks
- Quaternary geology on land and on the shelf, as well as in Svalbard
- Environmental geochemical mapping of soil and groundwater on a regional and local scale.
- Ground-source heating and underground thermal energy storage
- Groundwater for water supply, mineral water and energy purposes
- Assessment of groundwater quality, including trace elements and radioactive elements
- Baseline studies, long monitoring series and statistical analysis
- Geochemical processes in soil and groundwater
- Slope stability
Bømoen plussbygd
ORMEL 2 Optimal ressursutnyttelse av grunnvann til oppvarming og kjøling i Melhus kommune
EnerGizerS CO2-Enhanced Geothermal Systems for Climate Neutral Energy Supply
Publications
2022
-
Stenvik, Lars Aaberg;
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Frengstad, Bjørn.
(2022)
Hydrochemical and biotic control on iron incrustations in groundwater heat pump systems: Case study from a saline, anoxic aquifer in Melhus, Norway.
Geothermics
Academic article
-
Stenvik, Lars Aaberg;
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Frengstad, Bjørn S..
(2022)
How to avoid gas clogging in groundwater heat pump systems: a case study from the Lena terrasse system in Melhus, Norway.
Bulletin of Engineering Geology and the Environment
Academic article
2021
-
Sowizdzal, Anna;
Gladysz, Pawel;
Andresen, Trond;
Miecznik, Maciej;
Frengstad, Bjørn S.;
Liszka, Marcin.
(2021)
CO2-enhanced geothermal systems for climate neutral energy supply.
SINTEF akademisk forlag
Academic chapter/article/Conference paper
-
Gjengedal, Sondre;
Stenvik, Lars Aaberg;
Ramstad, Randi Kalskin;
Ulfsnes, Jan Ivar;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2021)
Online remote-controlled and cost-effective fouling and clogging surveillance of a groundwater heat pump system.
Bulletin of Engineering Geology and the Environment
Academic article
2020
-
Gjengedal, Sondre;
Brøtan, Vegard;
Buset, Ole Tore;
Larsen, Erik;
Åsebø Berg, Olav;
Torsæter, Ole.
(2020)
Fluid flow through 3D-printed particle beds: a new technique for understanding, validating, and improving predictability of permeability from empirical equations.
Transport in Porous Media
Academic article
-
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2020)
Fouling and clogging surveillance in open loop GSHP systems: A systematic procedure for fouling and clogging detection in the whole groundwater circuit.
Bulletin of Engineering Geology and the Environment
Academic article
2019
-
Skarphagen, Helge;
Banks, David;
Frengstad, Bjørn S.;
Gether, Harald.
(2019)
Design considerations for borehole thermal energy storage (BTES): A review with emphasis on convective heat transfer.
Geofluids
Academic literature review
-
Gjengedal, Sondre;
Stenvik, Lars Aaberg;
Storli, Pål-Tore Selbo;
Ramstad, Randi Kalskin;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2019)
Design of Groundwater Heat Pump Systems.
Principles, Tools, and Strategies for Controlling Gas
and Precipitation Problems.
Energies
Academic article
2017
-
Dutova, Ekaterina M.;
Nikitenkov, Aleksei N.;
Pokrovskiy, Vitaly D.;
Banks, David;
Frengstad, Bjørn;
Parnachev, Valerii P..
(2017)
Modelling of the dissolution and reprecipitation of uranium under oxidising conditions in the zone of shallow groundwater circulation.
Journal of Environmental Radioactivity
Academic article
-
Bottrell, Simon;
Hipkins, Emma V.;
Lane, James M.;
Zegos, Rose A.;
Banks, David;
Frengstad, Bjørn.
(2017)
Carbon-13 in groundwater from English and Norwegian crystalline rock aquifers: a tool for deducing the origin of alkalinity?.
Sustainable Water Resources Management
Academic article
2014
-
Frengstad, Bjørn S.;
Banks, David.
(2014)
Uranium distribution in groundwater from fractured crystalline aquifers in Norway.
CRC Press
Academic chapter/article/Conference paper
2012
-
Liebel, Heiko Tobias;
Stølen, Marie Sigmundsdatter;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2012)
Insights into the reliability of different thermal conductivity measurement techniques: a thermo-geological study in Mære (Norway).
Bulletin of Engineering Geology and the Environment
Academic article
-
Liebel, Heiko Tobias;
Huber, Kilian;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2012)
Thermal response testing of a fractured hard rock aquifer with and without induced groundwater flow.
Bulletin of Engineering Geology and the Environment
Academic article
-
Liebel, Heiko;
de Beer, Johannes;
Frengstad, Bjørn;
Kalskin Ramstad, Randi;
Brattli, Bjørge.
(2012)
Effect of water yield and rock thermal conductivities on TRT results.
Comunicações Geológicas
Academic article
2010
-
Frengstad, Bjørn S.;
Lax, Kaj;
Tarvainen, Timo;
Jæger, Øystein;
Wigum, Børge Johannes.
(2010)
The chemistry of bottled mineral and spring waters from Norway, Sweden, Finland and Iceland.
Journal of Geochemical Exploration
Academic article
2009
-
Karnachuk, Olga V.;
Gerasimchuk, A.L.;
Banks, David;
Frengstad, Bjørn S.;
Stykon, G.A.;
Tikhonova, Z.L..
(2009)
Bacteria of the sulfur cycle in the sediments of gold mine tailings, Kuznetsk Basin, Russia.
Microbiology
Academic article
2008
-
Frengstad, Bjørn S.;
Banks, David.
(2008)
The Natural Inorganic Chemical Quality of Crystalline Bedrock Groundwaters of Norway.
Blackwell Publishing
Academic chapter/article/Conference paper
2007
-
Reimann, Clemens;
Grimstvedt, Andreas Magnar;
Frengstad, Bjørn S.;
Finne, Tor Erik.
(2007)
White HDPE bottles as source of serious contamination of water samples with Ba and Zn.
Science of the Total Environment
Academic article
-
Frengstad, Bjørn S.;
Banks, David.
(2007)
Universal controls on the evolution of groundwater chemistry in crystalline bedrock: the evidence from empirical and theoretical studies.
Balkema
Academic chapter/article/Conference paper
2006
-
Banks, David;
Frengstad, Bjørn S..
(2006)
Evolution of groundwater chemical composition by plagioclase hydrolysis in Norwegian anorthosites.
Geochimica et Cosmochimica Acta
Academic article
2002
-
Banks, David;
Karnachuk, Olga V.;
Parnachov, Valerij P.;
Holden, Wayne;
Frengstad, Bjørn Syvert.
(2002)
Rural pit latrines as a source of groundwater contamination; examples from Siberia and Kosova.
Water and Environment Journal
Academic article
-
Frengstad, Bjørn.
(2002)
Groundwater quality of crystalline bedrock aquifers in Norway.
Department of Geology and Mineral Resources Engineering, NTNU
Doctoral dissertation
2001
-
Frengstad, Bjørn;
Banks, David;
Siewers, Ulrich.
(2001)
The chemistry of Norwegian groundwaters: IV. The pH-dependence of element concentrations in crystalline bedrock groundwaters.
The Science of the Total Envinronment
Academic article
2000
-
Frengstad, Bjørn;
Midtgård Skrede, Aase Kjersti;
Banks, David;
Krog, Jan Reidar;
Siewers, Ulrich.
(2000)
The Chemistry of Norwegian Groundwaters III. The Distribution of Trace Elements in 476 Crystalline Bedrock Groundwaters, as Analysed by ICP-MS Techniques.
Science of the Total Environment
Academic article
1999
-
Misund, Arve;
Frengstad, Bjørn;
Siewers, Ulrich;
Reimann, Clemens.
(1999)
Variation of 66 elements in European bottled mineral waters.
Science of the Total Environment
Academic article
-
Rokoengen, Kåre;
Frengstad, Bjørn.
(1999)
Radiocarbon and seismic evidence of ice sheet extent and the last deglaciation on the mid-Norwegian continental shelf.
Norsk Geologisk Tidsskrift
Academic article
1998
-
Banks, David;
Midtgård, Aase Kjersti;
Frengstad, Bjørn;
Krog, Jan Reidar;
Strand, Terje.
(1998)
The chemistry of Norwegian groundwaters. II. The chemistry of 72 groundwaters from Quaternary sedimentary aquifers.
The Science of the Total Envinronment
Academic article
-
Banks, David;
Frengstad, Bjørn;
Midtgård, Aase Kjersti;
Krog, Jan Reidar;
Strand, Terje.
(1998)
The chemistry of Norwegian groundwaters: I. The distribution of radon, major and minor elements in 1604 crystalline bedrock groundwaters.
The Science of the Total Envinronment
Academic article
Journal publications
-
Stenvik, Lars Aaberg;
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Frengstad, Bjørn.
(2022)
Hydrochemical and biotic control on iron incrustations in groundwater heat pump systems: Case study from a saline, anoxic aquifer in Melhus, Norway.
Geothermics
Academic article
-
Stenvik, Lars Aaberg;
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Frengstad, Bjørn S..
(2022)
How to avoid gas clogging in groundwater heat pump systems: a case study from the Lena terrasse system in Melhus, Norway.
Bulletin of Engineering Geology and the Environment
Academic article
-
Gjengedal, Sondre;
Stenvik, Lars Aaberg;
Ramstad, Randi Kalskin;
Ulfsnes, Jan Ivar;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2021)
Online remote-controlled and cost-effective fouling and clogging surveillance of a groundwater heat pump system.
Bulletin of Engineering Geology and the Environment
Academic article
-
Gjengedal, Sondre;
Brøtan, Vegard;
Buset, Ole Tore;
Larsen, Erik;
Åsebø Berg, Olav;
Torsæter, Ole.
(2020)
Fluid flow through 3D-printed particle beds: a new technique for understanding, validating, and improving predictability of permeability from empirical equations.
Transport in Porous Media
Academic article
-
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2020)
Fouling and clogging surveillance in open loop GSHP systems: A systematic procedure for fouling and clogging detection in the whole groundwater circuit.
Bulletin of Engineering Geology and the Environment
Academic article
-
Skarphagen, Helge;
Banks, David;
Frengstad, Bjørn S.;
Gether, Harald.
(2019)
Design considerations for borehole thermal energy storage (BTES): A review with emphasis on convective heat transfer.
Geofluids
Academic literature review
-
Gjengedal, Sondre;
Stenvik, Lars Aaberg;
Storli, Pål-Tore Selbo;
Ramstad, Randi Kalskin;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2019)
Design of Groundwater Heat Pump Systems.
Principles, Tools, and Strategies for Controlling Gas
and Precipitation Problems.
Energies
Academic article
-
Dutova, Ekaterina M.;
Nikitenkov, Aleksei N.;
Pokrovskiy, Vitaly D.;
Banks, David;
Frengstad, Bjørn;
Parnachev, Valerii P..
(2017)
Modelling of the dissolution and reprecipitation of uranium under oxidising conditions in the zone of shallow groundwater circulation.
Journal of Environmental Radioactivity
Academic article
-
Bottrell, Simon;
Hipkins, Emma V.;
Lane, James M.;
Zegos, Rose A.;
Banks, David;
Frengstad, Bjørn.
(2017)
Carbon-13 in groundwater from English and Norwegian crystalline rock aquifers: a tool for deducing the origin of alkalinity?.
Sustainable Water Resources Management
Academic article
-
Liebel, Heiko Tobias;
Stølen, Marie Sigmundsdatter;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2012)
Insights into the reliability of different thermal conductivity measurement techniques: a thermo-geological study in Mære (Norway).
Bulletin of Engineering Geology and the Environment
Academic article
-
Liebel, Heiko Tobias;
Huber, Kilian;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2012)
Thermal response testing of a fractured hard rock aquifer with and without induced groundwater flow.
Bulletin of Engineering Geology and the Environment
Academic article
-
Liebel, Heiko;
de Beer, Johannes;
Frengstad, Bjørn;
Kalskin Ramstad, Randi;
Brattli, Bjørge.
(2012)
Effect of water yield and rock thermal conductivities on TRT results.
Comunicações Geológicas
Academic article
-
Frengstad, Bjørn S.;
Lax, Kaj;
Tarvainen, Timo;
Jæger, Øystein;
Wigum, Børge Johannes.
(2010)
The chemistry of bottled mineral and spring waters from Norway, Sweden, Finland and Iceland.
Journal of Geochemical Exploration
Academic article
-
Karnachuk, Olga V.;
Gerasimchuk, A.L.;
Banks, David;
Frengstad, Bjørn S.;
Stykon, G.A.;
Tikhonova, Z.L..
(2009)
Bacteria of the sulfur cycle in the sediments of gold mine tailings, Kuznetsk Basin, Russia.
Microbiology
Academic article
-
Reimann, Clemens;
Grimstvedt, Andreas Magnar;
Frengstad, Bjørn S.;
Finne, Tor Erik.
(2007)
White HDPE bottles as source of serious contamination of water samples with Ba and Zn.
Science of the Total Environment
Academic article
-
Banks, David;
Frengstad, Bjørn S..
(2006)
Evolution of groundwater chemical composition by plagioclase hydrolysis in Norwegian anorthosites.
Geochimica et Cosmochimica Acta
Academic article
-
Banks, David;
Karnachuk, Olga V.;
Parnachov, Valerij P.;
Holden, Wayne;
Frengstad, Bjørn Syvert.
(2002)
Rural pit latrines as a source of groundwater contamination; examples from Siberia and Kosova.
Water and Environment Journal
Academic article
-
Frengstad, Bjørn;
Banks, David;
Siewers, Ulrich.
(2001)
The chemistry of Norwegian groundwaters: IV. The pH-dependence of element concentrations in crystalline bedrock groundwaters.
The Science of the Total Envinronment
Academic article
-
Frengstad, Bjørn;
Midtgård Skrede, Aase Kjersti;
Banks, David;
Krog, Jan Reidar;
Siewers, Ulrich.
(2000)
The Chemistry of Norwegian Groundwaters III. The Distribution of Trace Elements in 476 Crystalline Bedrock Groundwaters, as Analysed by ICP-MS Techniques.
Science of the Total Environment
Academic article
-
Misund, Arve;
Frengstad, Bjørn;
Siewers, Ulrich;
Reimann, Clemens.
(1999)
Variation of 66 elements in European bottled mineral waters.
Science of the Total Environment
Academic article
-
Rokoengen, Kåre;
Frengstad, Bjørn.
(1999)
Radiocarbon and seismic evidence of ice sheet extent and the last deglaciation on the mid-Norwegian continental shelf.
Norsk Geologisk Tidsskrift
Academic article
-
Banks, David;
Midtgård, Aase Kjersti;
Frengstad, Bjørn;
Krog, Jan Reidar;
Strand, Terje.
(1998)
The chemistry of Norwegian groundwaters. II. The chemistry of 72 groundwaters from Quaternary sedimentary aquifers.
The Science of the Total Envinronment
Academic article
-
Banks, David;
Frengstad, Bjørn;
Midtgård, Aase Kjersti;
Krog, Jan Reidar;
Strand, Terje.
(1998)
The chemistry of Norwegian groundwaters: I. The distribution of radon, major and minor elements in 1604 crystalline bedrock groundwaters.
The Science of the Total Envinronment
Academic article
Part of book/report
-
Sowizdzal, Anna;
Gladysz, Pawel;
Andresen, Trond;
Miecznik, Maciej;
Frengstad, Bjørn S.;
Liszka, Marcin.
(2021)
CO2-enhanced geothermal systems for climate neutral energy supply.
SINTEF akademisk forlag
Academic chapter/article/Conference paper
-
Frengstad, Bjørn S.;
Banks, David.
(2014)
Uranium distribution in groundwater from fractured crystalline aquifers in Norway.
CRC Press
Academic chapter/article/Conference paper
-
Frengstad, Bjørn S.;
Banks, David.
(2008)
The Natural Inorganic Chemical Quality of Crystalline Bedrock Groundwaters of Norway.
Blackwell Publishing
Academic chapter/article/Conference paper
-
Frengstad, Bjørn S.;
Banks, David.
(2007)
Universal controls on the evolution of groundwater chemistry in crystalline bedrock: the evidence from empirical and theoretical studies.
Balkema
Academic chapter/article/Conference paper
Report
-
Frengstad, Bjørn.
(2002)
Groundwater quality of crystalline bedrock aquifers in Norway.
Department of Geology and Mineral Resources Engineering, NTNU
Doctoral dissertation
Teaching
Courses
- TGB4575 - Engineering Geology, Specialization Course
- TGB4200 - Engineering Geology of Soils, Advanced Course
- GEOL3095 - Master's Thesis in Geology
- TGB4185 - Engineering Geology, Basic Course
- GEOL3093 - Special Course for the Master's Thesis
- GEOL3092 - Special Course for the Master's Thesis
- TGB4580 - Mineral Production and Resource Geology, Specialization Project
- TGB4570 - Engineering Geology, Specialization Project
- TGB4945 - Engineering Geology, Master's Thesis
- TGB4855 - Experts in Teamwork - Energy storage in the ground - an important contribution to the green transition
- BYGT2316 - Engineering Geology - Rock
- TGB4205 - Hydrogeology
Supervision
PhD-students
2008 - 2012 Heiko Liebel (co-supervisor)
2015 - 2021 Sondre Gjengedal (co-supervisor)
2018 - 2023 Lars Aaberg Stenvik (principal supervisor)
2021 - Christian Rekve Bryn (principal supervisor)
2024 - Nikolas Oberhardt (acting principal supervisor)
Master students
2024
Torbjørn Mofoss
Markus Lindberg
Sindre Holm
Herman Grytnes
Celina Engen
2023
Live Aasen Frosta
Lina Flo Hauge
Andrine Edelsteen Moen
Sjur Beyer
2022
Inga Kristin Gåsbakk
Thea Lillemo Winther
Lene Pallesen
Marthe Ottem
Anders Kleven
2021
Thomas Austin Stormoen
August Fiskum Ness
Eivind Wiik Ånes
Birgitte Skei van der Harst
Harald Birkeland Larsen
Martin Andreas Solbakken Løvaas
Maren Bergli
2020
Ingrid Mælan
Anja Bergersen
Sofie Stene Krogstad
2019
Leena Jaakola
Kaja Olsen Ørnes
Simon Ross Stenger
Emil Solbakken
2018
Katharina Scherger
Emilie Olsen Hauge
Mari Elise Furuheim Bryn
Bernhard Naglestad
Michal Sperre
Sunniva Fitjar Lunestad
Outreach
2021
-
Academic lectureStenvik, Lars Aaberg; Frengstad, Bjørn S.; Gjengedal, Sondre; Ramstad, Randi Kalskin. (2021) Diagnosing Encrustation Problems in Open-loop Groundwater Heat Pump Systems in Melhus, Norway. International Geothermal Association World Geothermal Congress 2020+1 Reykjavik , Reykjavik 2021-03-01 - 2021-10-27
2019
-
Academic lectureStenvik, Lars Aaberg; Gjengedal, Sondre; Frengstad, Bjørn S.; Ramstad, Randi Kalskin. (2019) Application of a flow-through cell to monitor groundwater source heat pump systems in Melhus, Norway. International Assocation of Hydrogeologists 46th IAH Congress: Groundwater management and governance – coping with water scarcity , Malaga 2019-09-22 - 2019-09-27
-
Popular scientific lectureStenvik, Lars Aaberg; Gjengedal, Sondre; Frengstad, Bjørn S.; Ramstad, Randi Kalskin. (2019) Groundwater source heat pumps systems: Principles and challenges. NTNU Young Researcher Clean Energy Forum Clean Energy Symposium , Trondheim 2019-02-08 - 2019-02-08
-
Academic lectureStenvik, Lars Aaberg; Gjengedal, Sondre; Frengstad, Bjørn S.; Ramstad, Randi Kalskin. (2019) ORMEL 2: Iron and manganese encrustations in open-loop ground source heat pump systems. Norsk Geologisk Forening Vinterkonferansen 2019 , Bergen 2019-01-07 - 2019-01-09
2010
-
Academic lectureLiebel, Heiko Tobias; Huber, Kilian; Ramstad, Randi kalskin; Brattli, Bjørge; Frengstad, Bjørn. (2010) Can rock core thermal conductivity data replace thermal response tests?. International Water Association (IWA) Water and Energy 2010 , Amsterdam 2010-11-10 - 2010-11-12