BJARKASON ELVAR KARL

写真a

Affiliation

Graduate School of International Resource Sciences  Department of Earth Resource Engineering and Environmental Science 

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Research Interests 【 display / non-display 】

  • Geothermal energy

  • Geothermal energy

  • Linear algebra

  • Numerical simulation

  • Randomized algorithms

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Graduating School 【 display / non-display 】

  • 　
    -
    2011.06

    University of Iceland   School of Engineering and Natural Sciences, Faculty of Sciences   Physics   Graduated

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Graduate School 【 display / non-display 】

  • 　
    -
    2019.06

    The University of Auckland  Department of Engineering Science  Doctor's Course  Completed

  • 　
    -
    2014.06

    University of Iceland  School of Engineering and Natural Sciences, Faculty of Earth Sciences  Geophysics  Master's Course  Completed

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Degree 【 display / non-display 】

  • The University of Auckland -  PhD in Engineering Science

  • University of Iceland -  MS in Geophysics

  • University of Iceland -  BS in Physics

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Campus Career 【 display / non-display 】

  • 2022.04
    -
    Now

    Akita University   Graduate School of International Resource Sciences   Department of Earth Resource Engineering and Environmental Science   Assistant Professor  

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External Career 【 display / non-display 】

  • 2019.05
    -
    2022.03

    Tohoku University   Institute of Fluid Science   Postdoctoral Researcher  

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Academic Society Affiliations 【 display / non-display 】

  • 2022.08
    -
    Now
     

    Japan

     

    The Geothermal Research Society of Japan

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Research Areas 【 display / non-display 】

  • Natural Science / Applied mathematics and statistics

  • Energy Engineering / Earth resource engineering, Energy sciences

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Research Achievements 【 display / non-display 】

    ◆Original paper【 display / non-display 】

  • Furthering understanding of the role of uncertainty for adsorptive tracer tests

    Bjarkason, E.K., Miyakoshi, E., Naganawa, S.

    Geothermal Resources Council Transactions   49   2237 - 2248   2025.10  [Refereed]

    Research paper (journal)   Domestic Co-author

  • Data space inversion for efficient predictions and uncertainty quantification for geothermal models

    de Beer, A., Power, A., Wong, D., Dekkers, K., Gravatt, M., Bjarkason, E.K., O’Sullivan, J.P., O’Sullivan, M.J., Maclaren, O.J., Nicholson, R.

    Computers & Geosciences   197   2025.03  [Refereed]

    Research paper (journal)   International Co-author

    DOI

  • Ensemble Kalman inversion for geothermal reservoir modelling

    de Beer, A., Bjarkason, E.K., Gravatt, M., Nicholson, R., O’Sullivan, J.P., O’Sullivan, M.J., Maclaren, O.J.

    Geophysical Journal International   241   580 - 605   2025.02  [Refereed]

    Research paper (journal)   International Co-author

    DOI

  • Modeling unobserved geothermal structures using a physics‑informed neural network with transfer learning of prior knowledge

    Shima, A., Ishitsuka, K., Lin, W., Bjarkason, E.K., Suzuki, A.

    Geothermal Energy   12   2024.10  [Refereed]

    Research paper (journal)   Domestic Co-author

    DOI

  • On the b-value dependency of injection-induced seismicity on geomechanical parameters

    Mukuhira, Y., Fehler, M.C., Bjarkason, E.K., Ito, T., Asanuma, H.

    International Journal of Rock Mechanics and Mining Sciences ( Elsevier BV )  174   105631   2024.02  [Refereed]

    Research paper (journal)   International Co-author

    DOI

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    ◆International conference proceedings【 display / non-display 】

  • Extracting static formation temperatures from temperature recovery data using neural nets

    Kaneko, S., Naganawa, S., Bjarkason, E.K.

    Proc., The 30th Formation Evaluation Symposium of Japan     2025.10  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

  • Evaluation of physical and chemical properties of high-temperature cement for supercritical geothermal wells

    Watabe, N., Bjarkason, E. K., Naganawa, S.

    Proc., ASME 2025 44th International Conference on Ocean, Offshore and Arctic Engineering ( American Society of Mechanical Engineers )  6   2025.08  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

    DOI

  • Deformation analysis of suction anchors for floating offshore wind turbines

    Nagano, T., Bjarkason, E.K., Naganawa, S.

    Proceedings of the Annual Offshore Technology Conference     2025.04

    Research paper (international conference proceedings)   Domestic Co-author

    DOI

  • Development of artificial neural networks for estimating static formation temperature

    Kaneko, S., Naganawa, S., Bjarkason, E.K.

    Geothermal Resources Council Transactions   48   2268 - 2278   2024.10  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

  • Preliminary evaluation of cesium tracer adsorption for geothermal applications: Implications for temperature decline predictions

    Bjarkason, E.K., Hawkins, A.J.

    Proceedings of International Symposium on Earth Science and Technology 2023     370 - 373   2023.11

    Research paper (international conference proceedings)   International Co-author

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    ◆Research society, Symposium materials, etc.【 display / non-display 】

  • Evaluation of hole-cleaning behavior in horizontal well drilling using CFD-DEM two-way coupling analysis

    Fukasawa, J., Bjarkason, E.K., Naganawa, S.

    Journal of the Japanese Association for Petroleum Technology   89 ( 6 ) 437 - 439   2024.09  [Invited]

    Research paper (research society, symposium materials, etc.)   Domestic Co-author

  • Thermal stress analysis of casing string in supercritical geothermal well drilling

    Journal of the Japanese Association for Petroleum Technology   88 ( 5 ) 429 - 430   2023.09  [Invited]

    Research paper (research society, symposium materials, etc.)   Domestic Co-author

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Presentations 【 display / non-display 】

  • Extracting static formation temperatures from temperature recovery data using neural nets

    Kaneko, S., Naganawa, S., Bjarkason, E.K.

    30th Formation Evaluation Symposium of Japan  2025.10  -  2025.10 

  • Applicability assessment of lithium ion tracer for predicting temperature decline in geothermal reservoirs

    Miyakoshi, E., Naganawa, S., Bjarkason, E.K.

    Annual Meeting of the Geothermal Research Society of Japan  2025.10  -  2025.10 

  • Multiphysics simulation of PDC bit performance for superhot geothermal drilling

    Yoshida, R., Bjarkason, E.K., Naganawa, S.

    Geothermal Rising Conference  2025.10  -  2025.10 

  • Assessing the performance of calcium aluminate cement exposed to supercritical conditions

    Watabe, N., Bjarkason, E.K., Naganawa, S.

    Geothermal Rising Conference  2025.10  -  2025.10 

  • Exploring the use of recurrent neural networks for real-time prediction of formation temperatures during drilling

    Takahashi, Y., Bjarkason, E.K., Naganawa, S.

    Geothermal Rising Conference  2025.10  -  2025.10 

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