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Halvor Hobæk's picture

Halvor Hobæk

Professor
  • E-mailHobak@uib.no
  • Phone+47 55 58 27 87
  • Visitor Address
    Allegt. 55
  • Postal Address
    Postboks 7803
    5020 BERGEN
Academic article
  • Hope, Gaute; Sagen, Hanne; Storheim, Espen; Hobæk, Halvor; Freitag, Lee. 2017. Measured and modeled acoustic propagation underneath the rough Arctic sea-ice. Journal of the Acoustical Society of America. 1619-1633.
  • Forland, Tonje Nesse; Hobæk, Halvor; Korneliussen, Rolf. 2014. Scattering properties of Atlantic mackerel over a wide frequency range. ICES Journal of Marine Science. 1904-1912.
  • Forland, Tonje Nesse; Hobæk, Halvor; Ona, Egil; Korneliussen, Rolf. 2014. Broad bandwidth acoustic backscattering from sandeel - measurements and finite element simulations. ICES Journal of Marine Science. 1894-1903.
  • Hobæk, Halvor; Forland, Tonje Nesse. 2013. Characterization of target spheres for broad-band calibration of acoustic systems. Acta Acustica united with Acustica. 465-476.
  • Nesse, Tonje Lexau; Hobæk, Halvor; Korneliussen, Rolf Jacob. 2009. Measurements of acoustic-scattering spectra from the whole and parts of Atlantic mackerel. ICES Journal of Marine Science. 1169-1175.
  • Askeland, Bjørn; Ruud, Bent Ole; Hobæk, Halvor; Mjelde, Rolf. 2009. A seismic field test with a Low-level Acoustic Combustion Source and Pseudo-Noise codes. Journal of Applied Geophysics. 66-73.
  • Askeland, Bjørn; Hobæk, Halvor; Mjelde, Rolf. 2008. Semiperiodic chirp sequences reduce autocorrelation side lobes of pulsed signals. Geophysics. Q19-Q27.
  • Mjelde, Rolf; Askeland, Bjørn; Hobæk, Halvor. 2008. A seismic field test with a low-level acoustic combustion source and pseudo-noise codes. Journal of Applied Geophysics.
  • Askeland, Bjørn; Ruud, Bent Ole; Hobæk, Halvor; Mjelde, Rolf. 2007. Marine seismics with a pulsed combustion source and Pseudo Noise codes. Marine Geophysical Researches. 109-117.
  • Demmink, Jan Hendrik; Helders, Paul J.M.; Hobæk, Halvor; Enwemeka, Chukuka. 2003. The variation of heating depth with therapeutic ultrasound frequency in physiotherapy. Ultrasound in Medicine and Biology. 113-118.
  • Hobæk, Halvor; Ystad, B. 1997. Experimental and numerical investigation of shock wave propagation in the post focal region of focused sound field. Acta Acustica united with Acustica. 978-986.
  • Hobæk, Halvor; Ystad, B. 1997. Experimental and numerical investigation of shock wave propagation in the post focal region of a focused sound field. Acustica. 978-986.
Report
  • Hobæk, Halvor; Sagen, Hanne. 2017. Interaction of sound and rough ice in the arctic . 380. 380. .
  • Sandven, Stein; Sagen, Hanne; Hope, Gaute; Hobæk, Halvor. 2016. Under-Ice Acoustic Propagation NERSC - WHOI. 97. 97. .
  • Sagen, Hanne; Hobæk, Halvor. 2016. Reflection of sound waves from the underside of the rough ice canophy in the Arctic Ocean. 374. 374. .
  • Sagen, Hanne; Hobæk, Halvor. 2016. On sound reflection from layered ice sheets. 367. 367. .
  • Hobæk, Halvor; Sagen, Hanne. 2015. Sound reflection from layered media. 340. 340. .
  • Hobæk, Halvor; Voll, Ådne. 2004. Synthesis of experimental simulation of sonic boom SOBER Project Task 2.8 - Technical Report. .
  • Hobæk, Halvor. 1998. Proceedings of the 21 th Scandinavian Symposium on Physical Acoustics. .
  • Hobæk, Halvor. 1997. Proceedings of the 20th Scandinavian symposium on physical acoustics. 1997-04. 1997-04. .
  • Hobæk, Halvor; Vestrheim, Magne. 1996. Proceedings of the 19th Scandinavian symposium on physical acoustics. 10-1996. 10-1996. .
  • Hobæk, Halvor. 1992. 15th Scandinavian Cooperation Meeting in Acoustics/Hydrodynamics. Ustaoset Høyfjellshotel 2.-5. February 1992. Compilation of Abstracts. .
Popular scientific lecture
  • Hobæk, Halvor. 2011. Glimt fra aktuell akustikkforskning.
Academic lecture
  • Hope, Gaute; Sagen, Hanne; Storheim, Espen; Hobæk, Halvor. 2016. Sea ice effect on long-range transmitted and modelled acoustic communication signals .
  • Hope, Gaute; Hobæk, Halvor; Sagen, Hanne. 2016. Geometry of Acoustic Communication Links in the Arctic. In Proceedings of the Institute of Acoustics.
  • Forland, Tonje Nesse; Hobæk, Halvor; Korneliussen, Rolf. 2012. Wide band calibration of echo sounders using spheres.
  • Forland, Tonje Nesse; Hobæk, Halvor; Korneliussen, Rolf. 2011. The frequency response of Atlantic mackerel and sandeel.
  • Hobæk, Halvor. 2011. On vertical echo sounder bottom echoes.
  • Forland, Tonje Nesse; Hobæk, Halvor; Korneliussen, Rolf. 2011. Experimental investigation of scattering properties of Atlantic mackerel.
  • Hobæk, Halvor; Heggen, Anja. 2010. On correction of depth dependence for normal incidence echosounders.
  • Hobæk, Halvor. 2009. Parametric acoustic arrays: A Bergen view.
  • Hobæk, Halvor. 2009. Parametric acoustic arrays: 50 years.
  • Storheim, Espen; Hobæk, Halvor. 2009. Development of an acoustical measuring system for assessing the quality of fish meat.
  • Hobæk, Halvor; Heggen, Anja. 2009. Analysis of echoes from a plane reflector - steps towards acoustic habitat mapping.
  • Hobæk, Halvor; Nesse, Tonje Lexau. 2007. SOUND SCATTERING FROM SHORT METALLIC CYLINDERS AND ITS RELATION TO MODAL VIBRATIONS.
  • Hobæk, Halvor; Nesse, Tonje Lexau. 2007. Modal analysis of sound scattering from short metallic cylinders.
  • Hobæk, Halvor. 2006. Superharmonic imaging in ultrasound.
  • Hobæk, Halvor; Nesse, Tonje Lexau. 2006. Scattering from spheres and cylinders - revisited.
  • Nesse, Tonje Lexau; Hobæk, Halvor; Korneliussen, Rolf Jacob. 2006. Scattering from mackerel bones.
  • Nesse, Tonje Lexau; Hobæk, Halvor; Korneliussen, Rolf Jacob; Ona, Egil. 2006. Acoustic Scattering from Atlantic Mackerel Backbones.
  • Hobæk, Halvor; Calise, Lucio; Voll, Ådne; Fardal, Rune. 2005. Measurement of shadow zone, caustic regions and field along the bottom, in a tank experiement with a strong sound speed profile.
  • Hobæk, Halvor; Voll, Ådne; Calise, Lucio; Fardal, Rune. 2005. Experiment on finite amplitude sound propagation in a fluid with a strong sound speed gradient.
  • Hobæk, Halvor; Johannessen, Ola M; Sagen, Hanne; Sandven, Stein. 2005. Acoustic monitoring in the Arctic, in particular the Fram Strait.
  • Hobæk, Halvor; Voll, Ådne; Calise, Lucio; Fardal, Rune. 2005. A model experiment for measuring sound propagation in a medium with a strong sound speed gradient.
  • Hobæk, Halvor. 2004. Peculiar waveform distortion in stratified media.
  • Hobæk, Halvor. 2003. Elektriske-/Magnetiske felt. Hva er det?
  • Hobæk, Halvor; Kippersund, Remi A. 2003. Asymmetric shock fronts in high intensity ultrasound beams.
  • Pedersen, Audun; Hobæk, Halvor. 2002. Simulations, design and measurements on a 1 MHz air-backed transducer.
  • Hobæk, Halvor; Johannessen, Ola M; Sagen, Hanne. 2002. Results from Ray Simulations in the Arctic using Numerical Environmental data from a Climate Model.
  • Hjelmervik, Karl Thomas; Hobæk, Halvor. 2002. Raytracing in the Presence of an Ice Cover.
  • Hobæk, Halvor; Kippersund, Remi A. 2002. Phase of shock wave harmonics in focused and unfocused ultrasonic beams.
  • Hobæk, Halvor. 2002. Om å ta seg vann over hodet - hydroakustikk ved Fysisk Institutt, UiB.
  • Hobæk, Halvor; Johannessen, Ola M. 2001. Sound ray stability in the Fram Strait.
  • Pedersen, Geir; Hobæk, Halvor. 2001. Single burst acoustic streaming.
  • Pedersen, Geir; Hobæk, Halvor. 2001. Acoustic streaming generated using low burst repetition frequencies and single bursts.
  • Berge, T.; Hobæk, Halvor. 2000. Singel burst acoustic streaming.
  • Berge, T.; Hobæk, Halvor. 2000. Singel burst acoustic streaming.
  • Johannessen, O.M.; Sagen, H.; Hobæk, Halvor. 2000. Acoustic monitoring of ocean climate in the central artic.
  • Johannessen, Ola M; Sagen, H.; Hobæk, Halvor. 2000. Acoustic monitoring of ocean climate in the central artic.
  • Johannessen, Ola M; Sagen, Hanne; Sandven, Stein; Hobæk, Halvor; Maier-Reimer, E.; Mikolajewicz, U.; Soldatov, V.; Bobylev, L.; Evert, E.; Wadhams, P; Kaletzky, A.; Esipov, I. 2000. Acoustic monitoring of Ocean Climate in the Artic.
  • Johannessen, O.M.; Sagen, H.; Sandven, S.; Hobæk, Halvor; Maier-Reimer, E.; Mikolajewicz, U.; Soldatov, V.; Bobylev, L.; Evert, E.; Wadhams, P.; Kaletzky, A.; Esipov, I. 2000. Acoustic monitoring of Ocean Climate in the Artic.
  • Foote, K.G.; Francis, D.T.; Furseth, H.; Hobæk, Halvor. 1999. Spheres for calibrating high-frequency broadband echo sounders.
  • Hobæk, Halvor; Berge, T. 1999. On two peculiar effects observed in high intensity ultrasound beams.
  • Sagen, A.; Johannessen, O.M.; Hobæk, Halvor; Tjøtta, Sigve. 1999. AMOC: Preliminary results.
  • Hobæk, Halvor; Nesse, Ø. 1998. Reflection and refraction of sound beams at a fluid-fluid interface near critical incidence angle.
  • Hobæk, Halvor. 1998. On the asymmetnc shape of shock waves in focused sound fields.
Masters thesis
  • Haugen, Svein Arild. 2010. Acostic tomography in the fram strait: - Predicted and measured travel times.
  • Storheim, Espen. 2009. Utvikling av eit industrielt akustisk målesystem for å bestmme kvalitet i fiskekjøt.
  • Sæther, Mathias. 2009. Transduser med stabil åpningsvinkel over et stort frekvensområde. Design, kinstruksjon og eksperimentelle målinger.
  • Heggen, Anja. 2009. Investigation of the possibilities for seabottom characterization using echosounder data.
  • Suleiman, Adam. 2009. Adaptive transdusere basert på tidsreversering. Målinger på en 5x5 array prototype.
  • Sletten, Marius Norvoll. 2008. Lokalisering og bestemmelse av objekter i sidescan sonar datasett.
  • Nesse, Tonje Lexau. 2006. Måling av akustisk spreiing frå makrellbein.
Doctoral dissertation
  • Hope, Gaute. 2018. Acoustic Propagation Underneath the Arctic Sea-ice.
  • Nesse Forland, Tonje. 2013. Acoustic Properties - Fish Without Swimbladder.
  • Calise, Lucio. 2009. Multifrequency acoustic target strength of Northern krill.
  • Askeland, Bjørn. 2008. Marine seismics with a Low-level Acoustic Combustion Source and time-coded sequences.
  • Pedersen, Geir. 2007. Methodology for in situ target strength measurement of fish.
  • Hobæk, Halvor. 1977. Parametric acoustic transmitting arrays.
Museum exhibition
  • Hobæk, Halvor. 2005. Fysikkhistorisk utstilling, Glassburet, Institutt for fysikk og teknologi, Universitetet i Bergen.

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