Greinar

Gunnarsson, A., Gardarsson, S.M., and Sveinsson, O.G.B. (2019). Icelandic snow cover characteristics derived from a gap-filled MODIS daily snow cover product. Hydrol. Earth Syst. Sci., 23, 3021–3036. DOI 10.5194/hess-23-3021-2019

Eythorsson, D., Gardarsson, S.M., Ahmad, S.K., Hossain, F., and Nijssen, B. (2019). Arctic climate and snow cover trends – Comparing Global Circulation Models with remote sensing observations. International Journal of Applied Earth Observation and Geoinformation, 80, 71-81. DOI 10.1016/j.jag.2019.04.003

Eythorsson, D., Gardarsson, S.M., Gunnarsson, A., and Hrafnkelsson, B. (2018). Statistical summer mass-balance forecast model with application to Bruarjokull glacier, South East Iceland. Journal of Glaciology. 64(244), 311-320. DOI 10.1017/jog.2018.22

Unger, E.A., Ulfarsson, G.F., Gardarsson, S.M., and Matthiasson, T. (2018). The effect of wind energy production on cross-border electricity pricing: The case of western Denmark in the Nord Pool market. Economic Analysis and Policy. 58, 121-130. DOI 10.1016/j.eap.2018.01.006

Holmgeirsson, S.; Ingolfsson, H. P.; Eichelberger, J.; Pye, S.; Normann, R.; Kaldal, G. S.; Blankenship, D.; Mortensen, A.; Markusson, S.; Paulsson, B.; Karlsdottir, S. N.; Wallevik, S. O.; Gardarsson, S. M.; Tester, J.; Lavallee, Y. (2018). Krafla Magma Testbed (KMT): Engineering Challenges of Drilling into Magma and Extracting its Energy. Geothermal Resources Council Transactions, 42.

Ingolfsson, H. P.; Gardarsson, S. M. (2018). GEORG Geothermal Energy Research Cluster Initiative – Organizational Structure and Synergy. Geothermal Resources Council Transactions, 42.

Barich, A; Ingolfsson, P.I.; Gardarsson, S.M., and Urban, T. (Editors) (2018). GEORG Geothermal Workshop – Book of Abstracts. GEORG Geothermal Workshop 2018, November 14-15th, 2018.

Gunnarsdottir, M.J., Persson, K.M., Andradottir, H.O., and Gardarsson, S.M. (2017). Status of small water supplies in the Nordic countries: Characteristics, water quality and challenges. International Journal of Hygiene and Environmental Health. 220(8), 1309-1317. DOI 10.1016/j.ijheh.2017.08.006

Unger, E.A., Ulfarsson, G.F., Gardarsson, S.M., and Matthiasson, T. (2017). A Long-Term Analysis Studying the Effect of Changes in the Nordic Electricity Supply on Danish and Finnish Electricity Prices. Economic Analysis and Policy, 56, 37-50. DOI 10.1016/j.eap.2017.06.001

Klove, B., Kvitsand, H., Pitkänen, T., Gunnarsdóttir, M.J., Gaut, S., Gardarsson, S.M. Rossi, P., Miettinen, I. (2017). Overview of groundwater sources and water-supply systems, and associated microbial pollution, in Finland, Norway and Iceland. Hydrogeology Journal, 25(4), 1033-1044. DOI 10.1007/s10040-017-1552-x

Eliasson, K., Ulfarsson, G.F., Valsson, T., and Gardarsson, S.M. (2017). Identification of development areas in a warming Arctic with respect to natural resources, transportation, protected areas, and geography. Futures, 85, 14-29. DOI 10.1016/j.futures.2016.11.005

Gunnarsdottir, M.J., Gardarsson, S.M., Jonsson, G.S., and Bartram, J. (2016). Chemical Quality and Regulatory Compliance of Drinking Water in Iceland. International Journal of Hygiene and Environmental Health, 219(4), 724-733. DOI 10.1016/j.ijheh.2016.09.011

Gunnarsdottir, M.J., Gardarsson, S.M., Olafsdottir, S. (2016). Íslenskt neysluvatn: yfirlit og staða gæða. Verktaekni, Journal of the Association of Chartered Engineers in Iceland, 22(1), 32-37.

Ingolfsson, H.P., Stoklosa, A. W., Gudmundsson, M. T., Unnthorsson, R., Asbjornsson, E. J., Hauksdóttir, S., Palsson, B., Bornsson, O.B., Huenges, E., Gardarsson, S. M. (2016). GEORG - Geothermal Research Cluster cooperation, Joint effort in geothermal energy research. Proceedings of the European Geothermal Congress 2016, ISBN 978-2-9601946-0-9, Sept. 20-24, 2016, Strasbourg, France.

Ingolfsson, H.P., Arnason, K, Axelsson, G., Franzson, H., Hreinsdottir, S., Jonsson, M.Th., Saevarsdottir, G.A., Gunnarsson, G., Juliusson, E., Podgorney, R.P., Sigmundsson, F., Gardarsson, S. M. (2016). Deep Roots of Geothermal Systems. A GEORG Collaborative Project. Proceedings of the European Geothermal Congress 2016, ISBN 978-2-9601946-0-9, Sept. 20-24, 2016, Strasbourg, France.

Gunnarsdottir, M.J., Gardarsson, S.M., Jonsson, G.S., Armannsson, H., Bartram, J. (2015). Natural background levels for chemicals in basaltic volcanic aquifers. Hydrology Research, 46(4), 647-660. DOI 10.2166/nh.2014.123

Gunnarsdottir, M. J., Gardarsson, S. M., and Bartram, J. (2015). Developing a national framework for safe drinking water – Case study from Iceland. Int. J. Hyg. Environ. Health. 281(2), 196-202. DOI 10.1016/j.ijheh.2014.10.003

Gunnarsdottir, M.J., and Gardarsson, S.M. (2015). Gæði neysluvatns í ferðaþjónustu á Íslandi. Verktaekni, Journal of the Association of Chartered Engineers in Iceland. 21(1), 17-20.

Olafsdottir, S., Gardarsson, S.M., Andradottir, H.O., Armannsson, H., and Oskarsson, F. (2015). Near Field Fate of H₂S from two Geothermal Power Plants in Iceland. Proceedings World Geothermal Congress 2015, April 2015, Australia – New Zealand.

Gardarsson, S.M., Gunnarsson, A., Pfister, M., Tomasson, G.G., (2015). Karahnjukar dam spillway – Comparison of operational data and results from hydraulic modelling. Proceeding of the Hydro 2015 International Conference, October 26-28, 2015, Bordeaux, France.

Olafsdottir, S., Gardarsson, S.M., Andradottir, H.O. (2014). Natural near Field Sinks of Hydrogen Sulfide from two Geothermal Power Plants. Atmospheric Environment, 96, 236-244. DOI 10.1016/j.atmosenv.2014.07.039

Olafsdottir, S., Gardarsson, S.M., and Andradottir, H.O. (2014). Spatial distribution of Hydrogen Sulfide from two Geothermal Power Plants in Complex Terrain. Atmospheric Environment, 82, 60-70. DOI 10.1016/j.atmosenv.2013.10.013

Gunnarsdottir, M.J., Gardarsson, S.M., and Sigmundsdottir, G. (2014). Áhrif gæðakerfa vatnsveitna á lýðheilsu. Verktaekni, Journal of the Association of Chartered Engineers in Iceland, 20(1), 17-21.

Gunnarsson, A., Gardarsson, S.M., Tomasson, G.G., Johannesson, H. (2014). Model investigation of energy dissipation for low Froude number spillways in Lower Thjorsa River in Iceland. Proceeding of the Hydro 2014 International Conference, October 13-15, 2014, Cernobbio, Italy.

Valsson, T., G. F. Ulfarsson, and Gardarsson, S.M. (2013). A Theory of the Evolution of Settlement Structures Based on Identification and Use of Patterns: Iceland as a Case Study. Futures, 54, 19-32. DOI 10.1016/j.futures.2013.09.008

Olafsdottir, S., and Gardarsson, S.M. (2013). Impacts of Meteorological Factors on Hydrogen Sulfide Concentration downwind of Geothermal Power Plants. Atmospheric Environment, 77, 185-192. DOI 10.1016/j.atmosenv.2013.04.077

Gunnarsdottir, M.J., Gardarsson, S.M., and Andradottir, H.O. (2013). Microbial contamination in groundwater supply in cold climate and pumice: Case study of norovirus outbreak at Lake Mývatn, Iceland. Hydrology Research, 44(6), 1114-1128. DOI 10.2166/nh.2013.076

Gardarsson, S.M., Sigtryggsdottir, F.G., Palmason, P., and Ingolfsson, P. (2013).  Measures in the Hafrahvammagljufur Canyon to limit scour due to operation of the Karahnjukar Dam Spillway.  ICOLD 2013 International Symposium, August 14-16, 2013, Seattle, USA.

Thorarinsdottir, T., Gardarsson, S.M., Crochet, P., and Andradottir, H.O. (2013). Aðferðafræði við mat á tæknilega mögulegu vatnsafli með notkun vatnafræði líkana í hárri upplausn. Verktaekni, Journal of the Association of Chartered Engineers in Iceland, 19(3), 23-27.

Gunnarsson, A., Gardarsson, S.M., Tomasson, G.G., Johannesson, H. (2013). Prófanir iðuþróar við Hvammsvirkjun. Verktaekni, Journal of the Association of Chartered Engineers in Iceland, 19(3), 45-51.

Gunnarsdottir, M.J., Gardarsson, S.M., Elliott, M.A., Sigmundsdottir, G., and Bartram, J. (2012).  Benefits of Water Safety Plans: Microbiology, Compliance and Public Health.  Environ. Sci. and Technol., 46(14) pp 7782-7789.

Gunnarsdottir, M. J., Gardarsson, S. M., and Bartram, J. (2012). Icelandic experience with water safety plans. Water Science and Technology, 65(2), 277-288.

Hrafnkelsson, B., Ingimarsson, K. M., Gardarsson, S. M., and Snorrason, A. (2012). Modeling discharge rating curves with Bayesian B-splines. Stochastic Environmental Research and Risk Assessment, 26(1), 1-20.

Gudmundsson, A., Gardarsson, S.M., Tomasson, G.G., Gunnarsson, A., Johannesson, H. (2012).  Model Investigation of a Juvenile Bypass System at Urridafoss Hydroelectric Project in Iceland.  Proceedings of the International Conference HYDRO 2012, Oct. 29-31, 2012, Bilbao, Spain.

Gunnarsson, A., Gardarsson, S.M., Tomasson, G.G., Johannesson, H. (2012).  Stilling basin length optimization for Hvammur hydro electric project.  Proceeding of the 2nd IAHR Europe Congress, June 27-29, 2012, Munich, Germany.

Gunnarsdottir, M.J. and Gardarsson, S.M. (2011).  Að byrgja brunninn – rannsókn á innra eftirliti vatnsveitna. Árbók VFÍ, 265-271.

Gunnarsdottir, M.J. and Gardarsson, S.M. (2010). Study of water safety plans in sixteen Icelandic waterworks, proceeding of the 7 Nordic Drinking Water Conference 7 – 9 June 2010, Copenhagen, Denmark.

Olafsdottir, S., Gardarsson, S.M. and Armannsson, H. (2010).  Concentration of Hydrogen Sulfide from Geothermal Power Plants in the vicinity of Reykjavik City, Iceland, 2007-2009.  Proceedings World Geothermal Congress 2010, 25-29, April 2010, Bali, Indonesia.

Andradottir, H.O., Gardarsson, S.M., Olafsdottir, S. (2010).  Lárétt útbreiðsla gosstróka Eyjafjallajökuls reiknuð frá gervihnattamyndum. Árbók VFÍ, bls. 239-248.

Gardarsson, S.M., Tomasson, G.G., Sigtryggsdottir, F.G, Pálmason, P.R., and Stefansson, B. (2009).  Kárahnjúkar dam spillway - Design and operational experience.  Proceeding of 33rd International Association of Hydraulic Engineering & Research (IAHR) Biennial Congress, August 9-14, 2009, Vancouver, Canada.

Tomasson, G.G., Gardarsson, S.M., Leifsson, Th.S., and Stefansson, B. (2009).  Flood design criteria for Kárahnjúkar dam – a glacially dominated watershed.  Proceeding of 33rd International Association of Hydraulic Engineering & Research (IAHR) Biennial Congress, August 9-14, 2009, Vancouver, Canada.

Gunnarsdottir, M.J., Andradottir, H. O., and Gardarsson, S.M. (2008).  Sjúkdómsvaldandi örverur í grunnvatni.  Árbók VFÍ, bls. 241-250.

Olafsdottir, S., Gardarsson, S.M. and Gustafsson, L. (2008).  Measurements and Modelling of Hydrogen Sulfide in Reykjavik City 2006 and 2007. Proceedings of the 19th International Symposium on Transport Phenomena, 17-20 August, 2008, Reykjavik, Iceland.

Gardarsson, S.M, Andradottir, H.O., Ruesch, C. and Sveinsson, O.G.B. (2008).  Karahnjukar Hydropower Project Climate Change Impacts. Proceedings of the 15th International Seminar on Hydropower Plants, pp. 493-502. November 26-28, Vienna, Austria.

Ingimarsson, K.M., Hrafnkelsson, B., Gardarsson, S.M., and Snorrason, A. (2008).  Bayesian Estimation of Discharge Rating Curve.  Proceedings of the XXV Nordic Hydrological Conference, pp. 308-317.  Nordic Association for Hydrology. Reykjavik, Iceland, August 11-13.

Gardarsson, S.M. and Yeh, H. (2007).  Hysteresis in Shallow Water Sloshing.  Journal of Engineering Mechanics, Volume 133, Issue 10, pp. 1093-1100.

Olafsdottir, S., Gardarsson, S.M. and Gustafsson, L.E. (2007).  Líkangerð af styrk brennisteinsvetnis í Reykjavík.  Árbók VFÍ, bls. 249-256.

Jonsson, S.,  Gardarsson, S.M. and Andradóttir, H.Ó. (2007).  Flóðrakning með takmörkuðum gögnum.  Árbók VFÍ, bls. 239-247.

Tomasson, G.G., Gardarsson, S.M., Petry, B. and Stefansson, B. (2006).  Design challenges and solutions for the Kárahnjúkar spillway.  The International Journal on Hydropower and Dams, Vol. 13(5), pp. 84-88.

Tomasson, G.G., Gardarsson, S.M., and Leifsson, Þ.S. (2006).  Flóðvirki Kárahnjúkavirkjunar við Hálslón. Árbók VFÍ, bls. 323-330.

Gardarsson, S.M.  Mat á líftíma Hálslóns með Monte Carlo hermun. (2006). Árbók VFÍ, bls. 225-231.

Gardarsson, S.M.  Áhrif loftslagsbreytinga á líftíma Hálslóns. (2006).  Conference proceeding Orkuþing, pp. 572-579.   Reykjavik 12.-13. okt. 2006.

Tomasson, G.G., Gardarsson, S.M., Petry, B. and Stefansson, B. (2006).   Spillway facilities for the Kárahnjúkar Dam in Eastern Iceland: Design challenges and solutions. Conference proceeding, 9 pages. International Conference Hydro 2006. Porto Carras, Greece, September 25-28.

Gardarsson, S.M. and Eliasson, J. (2006).  Influence of Climate Warming on Hálslón Reservoir sedimentation.  Proceedings of the International symposium on “Dams in the Societies of the XXI Century” (ICOLD 22nd), pp 1255-1260.  Barcelona, Spain.

Gardarsson, S.M., Eliasson, J., and Jonsson, B. (2006).  Influence of Climate Warming on Hálslón Reservoir sedimentation.  Extended abstract, pp 125-128.  Proceedings of the European Conference on Impacts of Climate Change on Renewable Energy Sources. Reykjavik, Iceland, June 5–9.

Gardarsson, S.M. and Eliasson, J. (2006).  Influence of Climate Warming on Hálslón Reservoir sediment filling.  Nordic Hydrology.  Vol. 37(3) pp 235–245.

Jonsson, B., Gardarsson, S. M. og Eliasson, J. (2006).  Kárahnjúkavirkjun. Framburður inn í Hálslón og langtímaþróun rennslis og miðlunar (Extended Abstract). Ágrip erinda og veggspjalda. Vorráðstefna Jarðfræðafélags Íslands, Askja 19. apríl.

Gunnarsdóttir, M. J., Garðarsson, S. M., og Jónsson, G. S. (2005).  Neysluvatnsgæði á Íslandi. Árbók VFÍ, bls. 201-208.

Garðarsson, S. M. (2005).  Hermun svörunar mannvirkis með stillanlegum vökvadempara.  Árbók VFÍ, bls. 225-232.  Verkfræðingafélagið 2005.

Jónsson, B., Garðarsson, S. M., og Elíasson, J. (2005).  Kárahnjúkavirkjun.  Langtímaþróun rennslis og miðlunar. Árbók VFÍ, bls. 253-259.

Gardarsson, S. M. (2004). Case study of hysteresis in shallow water sloshing.  Árbók VFÍ, bls. 210-216.

Sævarsson, R., Gardarsson, S. M., Helgason, H. (2004). Hermilíkan af Skerjafjarðarveitu. Árbók VFÍ, bls. 191-201.

Gardarsson, Sigurdur M. and Tomasson, Gunnar G. (2002).  Water level changes due to the Karahnjukar Hydroelectric Project in Eastern Iceland.  River Flow 2002 - Proceedings of the International Conference on Fluvial Hydraulics, D. Bousmar & Y. Zech, Editors ISBN 90 5809 509 6.  Netherland.

Gardarsson, S.M, Yeh, H, and Reed, D. (2001).  Behaviour of Sloped-Bottom Tuned Liquid Dampers.  Journal of Engineering Mechanics. Vol. 127, Issue 3, pp. 266-271.

Gardarsson, S.M. and Grindeland, T. (2000). Case Study: Requirements for Cumulative Effects Analysis.  Proceedings of the 2000 ASCE International Water Resources Engineering Conference, Minneapolis, USA.

Gardarsson, S.M., Grindeland, T. Knox, J. and Hadley, H.H. (1999). Geomorphic Analysis of the Upper Mississippi River Basin.  Proceedings of the 1999 ASCE International Water Resources Engineering Conference, Seattle, USA.

Clinton, B.A., Bradley, B.B. and Gardarsson, S.M. (1999).  Upper Mississippi River/Illinois Waterway Cumulative Effects Study.  Proceedings of the 1999 ASCE International Water Resources Engineering Conference, Seattle, USA.

Grindeland, T., Gardarsson, S.M., and Knox, J. (1999).  Human Influences on the Upper Mississippi River and Illinois Waterway.  Proceedings of the 1999 ASCE International Water Resources Engineering Conference, Seattle, USA.

Nakato, T., Grindeland, T. and Gardarsson, S.M. (1999). Sediment Transport along the Upper Mississippi River. Proceedings of the 1999 ASCE International Water Resources Engineering Conference, Seattle, USA.

Reed, D., Yeh, H., Yu, J. and Gardarsson, S.M. (1998).  Investigation of Tuned Liquid Dampers under large amplitude excitation.  Journal of Engineering Mechanics. Vol. 124, Issue 4, pp. 405-413.

Gardarsson, S., H. Yeh and D.A. Reed (1998).  An Investigation of Sloped Bottom Liquid Dampers.  Proc. of the 2nd World Conference on Structural Control, Kyoto, Japan, pp. 155-164.

Reed, D., Yeh, H., Yu, J. and Gardarsson, S.M. (1998).  Tuned Liquid Dampers under large amplitude excitation.  Journal of Wind Engineering and Industrial Aerodynamics. Vol. 74-6, pp. 923-930.

Gardarsson, S.M., Grindeland, T., Bradley, J. (1998).  Sediment Budget for Upper Mississippi River.  Proceedings of the 1998 ASCE International Water Resources Engineering Conference, Memphis, USA.

Walton, R., Gardarsson, S.M., Raman, A., Frediani, Jr., H.A., and Shaw, D.T. (1998).  Hydrologic Investigations of the Loxahatchee Mitigation Bank.  Proceedings of the 1998 ASCE International Water Resources Engineering Conference, Memphis, USA.

Reed, D.A., H. Yeh, J. Yu and Gardarsson, S. (1997).  An Investigation of Tuned Liquid Dampers for Structural Control.  Proc. of the UJNR Workshop, Tsukuba, Japan.

Reed, D.A., H. Yeh, J. Yu and Gardarsson, S. (1997).  Tuned Liquid Dampers Under Large Amplitude Excitation”. Proc. of the 2nd European and African Conference on Wind Engineering, Genova, Italy, June 22-26, pp.1627-1633.

Reed, D., Yeh, H., Yu, J. and Gardarsson, S.M.  (1996).  Experimental investigation of tuned liquid dampers.  Proc. of ASCE 1996 International Conference on Natural Disasters Reduction, pp 215-216 (abstract).

Reed, D., Yeh, H., Yu, J. and Gardarsson, S.M. (1995).  Performance of tuned liquid dampers for large amplitude excitation. Proceedings of the 2nd Internal Workshop on Structural Control, pp. 432-443.

Gardarsson, S.M. (1995).  Run-up of a Solitary wave on a Vertical Wall. Proceedings of the 2nd International Workshop on Long-Wave Runup Models, pp. 298-305, Washington, USA.

Gardarsson, S.M. and Yeh, H. (1993).  Numerical simulations of Tsunami-Bore run-up using the Random Choice Method.  Proceedings of the 3rd UJNR Tsunami Workshop, pp. 13-23. Osaka, Japan.