Hanne Sagen

Job Position: 
Research Leader/Senior Researcher
Research Group: 
+47 93213296
Hanne Sagen Staff Picture

Research interests

Sagen is a researcher at the Nansen Environmental and Remote Sensing Center. Her expertise is in applied mathematics specialized within ocean acoustic. Her research interests are focused on using new technologies for observing the Arctic environment, such as acoustic tomography, passive acoustics, floats and gliders.  She was deputy-coordinator in the EU projects (AMOC (1998-2001) and ACOBAR (2008-2013)), and she led the follow up ACOBAR II project funded by RCN project.

Sagen has led the development of the acoustic tomography system in the Fram Strait, and coordinated annual ocean/acoustic cruises to the Fram Strait since 2007 (involving open ocean vessel, icebreakers and aircraft missions). Currently, Sagen lead the   UNDER-ICE – Arctic Ocean under melting ice; and she is the deputy coordinator of the EU project INTAROS - Integrated Arctic Observation System.  Sagen has a strong international network in USA, and Europe within research and technologies.    

Sagen is a member of the Acoustical Society of America and she is a member of the Norwegian Scientific Academy for Polar Research. She has served as member in research programmes committees in the Norwegian Research Council, and is a former member of the Norwegian National International Polar Year Committee (2004-2005). She is member of the ITU/WMO/UNESCO-IOC Joint Task Force (JTF) - Green Cables sin 2013 and of the scientific steering committee of the International Quiet Ocean Experiment (SCOR committee) from 2016.She received her Cand.mag. in 1985, Cand. Scient.  in 1987 and Dr. Scient.  in 1998 in applied mathematics from the University of Bergen, Norway.

Peer Review Publications and Books

42 total publications.


  1. Dushaw B, Sagen H, Beszczynska-Møller A. Sound speed as a proxy variable to temperature in Fram Strait. Journal of the Acoustical Society of America. 2016;140(1).


  1. Tollefsen D, Sagen H. Seismic exploration noise reduction in the marginal ice zone. Journal of the Acoustical Society of America. 2014;136(1).
  2. Sandven S, Sagen H, Bertino L, Beszczynska-Møller A, Fahrbach E, Worcester PF, et al. The Fram Strait integrated observing and modelling system. In: Sustainable Operational Oceanography - Proceedings of the Sixth International Conference on EuroGOOS 4–6 October 2011, Sopot, Poland. 2014.


  1. Johannessen OM, Sagen H, Hamre T, Hobæk HH, Hasselmann K, Maier-Reimer E, et al. Acoustic Monitoring of Ocean Climate in the Arctic (AMOC). In: Referee paper in "Operational oceanography - Implementation at the european and regional scales. proceedings of the 2nd EuroGOOS International Conference, Rome, 11-13 March, 1999. Elsevier Oceanography Series. 2002.


  1. Johannessen OM, Sagen H, Sandven S, Starke KV, Payne S, Engelsen I. Spatial variation in ambient sound level within ice edge eddies. In: Natural Physical Sources of Underwater Sound. 1993. p. 563-571.

Other Publications


  1. Sagen H, Sandven S, Skarsoulis E, Kalogerakis M, Abrahamsen J, Skagen P, et al. The Fram Strait Tomography system - A Technical Layout. In the proceeding of DAMOCLES High Technology Instrumetation Training Course, Brest. 2006;
  2. Bertino L, Lisæter KA, Sagen H. The TOPAZ Arctic monitoring and prediction system. Proceedings of the DAMOCLES workshop: Current Problems for operational short range weather, ocean and sea ice forecasting in the Arctic - a user perspective. The Polar Environmental Centre, Tromsø, Norway. 2006;


  1. Sandven S, Haas C, Sagen H, Kloster K, Forsberg R, Alexandrov V. CRYOSAT pre-launch CalVal study for sea ice thickness.(On CD-ROM). the 31-st International Symposium on Remote Sensing of Environment. Global Monitoring for Sustainability and Security. 2005;