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Earth Science

D-Index
40
Citations
6717
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5777
National Ranking
284

Overview

Risto Pirjola is affiliated with Natural Resources Canada and contributes to the fields of Earth and Planetary Sciences as well as Engineering. Their research focuses substantially on geophysics, electrical and electronic engineering, astronomy and astrophysics, and ocean engineering. The scientist's main areas of investigation include geophysical and geoelectrical methods, electromagnetic simulation and numerical methods, seismic waves and analysis, earthquake detection and analysis, lightning and electromagnetic phenomena, and general geophysical methods and applications.

Their recent published papers reflect a concentration on geomagnetically induced currents and related geophysical phenomena. Key publications include:

  • The Lehtinen-Pirjola method modified for efficient modelling of geomagnetically induced currents in multiple voltage levels of a power network (2022, Annales Geophysicae)
  • Distributed-Source Transmission Line Theory for Modeling the Coast Effect on Geoelectric Fields (2023, IEEE Transactions on Power Delivery)
  • The influence of the coast effect on geomagnetically induced currents: A modeling study (2021, 2021 IEEE Power & Energy Society General Meeting [PESGM])
  • Electric field calculations for real-time space weather alerting systems (2022, Geophysical Journal International)

Frequent co-authors in their research include:

  • D. H. Boteler
  • Loughlin Tuck
  • Santiago Marsal
  • Xuan Wang

The venues where this scientist regularly publishes are:

  • Annales Geophysicae
  • IEEE Transactions on Power Delivery
  • 2021 IEEE Power & Energy Society General Meeting (PESGM)
  • Geophysical Journal International

Best Publications

  • The effects of geomagnetic disturbances on electrical systems at the earth's surface

    D.H. Boteler;R.J. Pirjola;R.J. Pirjola;H. Nevanlinna

  • Geomagnetic storm of 29–31 October 2003: Geomagnetically induced currents and their relation to problems in the Swedish high-voltage power transmission system

    Antti Pulkkinen;Sture Lindahl;Ari Viljanen;Risto Pirjola

  • Geomagnetically induced currents: Science, engineering, and applications readiness

    Antti Pulkkinen;E. Bernabeu;A. Thomson;A. Viljanen

  • Geomagnetically induced currents in the Finnish high-voltage power system

    A. Viljanen;R. Pirjola

  • Review On The Calculation Of Surface Electric And Magnetic Fields And Of Geomagnetically Induced Currents In Ground-Based Technological Systems

    Risto Pirjola

  • Space weather events in July 1982 and October 2003 and the effects of geomagnetically induced currents on Swedish technical systems

    Magnus Wik;Magnus Wik;R. Pirjola;Henrik Lundstedt;A. Viljanen

  • The complex-image method for calculating the magnetic and electric fields produced at the surface of the Earth by the auroral electrojet

    D. H. Boteler;R. J. Pirjola

  • Modeling geomagnetically induced currents

    Unknown

  • Calculation of geomagnetically induced currents in the 400 kV power grid in southern Sweden

    Magnus Wik;Magnus Wik;A. Viljanen;R. Pirjola;A. Pulkkinen;A. Pulkkinen

  • Geomagnetically Induced Currents in the High-Voltage Power Grid in China

    Unknown

  • Recordings of geomagnetically induced currents and a nowcasting service of the Finnish natural gas pipeline system

    A. Viljanen;A. Pulkkinen;A. Pulkkinen;R. Pirjola;R. Pirjola;K. Pajunpää

  • Fast computation of the geoelectric field using the method of elementary current systems and planar Earth models

    A. Viljanen;A. Pulkkinen;O. Amm;R. Pirjola

  • Recordings and occurrence of geomagnetically induced currents in the Finnish natural gas pipeline network

    Antti Pulkkinen;Ari Viljanen;Kari Pajunpää;Risto Pirjola

  • Complex image method for calculating electric and magnetic fields produced by an auroral electrojet of finite length

    R. Pirjola;A. Viljanen

  • Modelling geomagnetically induced currents produced by realistic and uniform electric fields

    Unknown

  • Modelling of space weather effects on pipelines

    Antti Pulkkinen;Risto Pirjola;David Boteler;Ari Viljanen

  • Geomagnetically induced currents in an electric power transmission system at low latitudes in Brazil: A case study

    Nalin B. Trivedi;Ícaro Vitorello;Wanderli Kabata;Severino L. G. Dutra

  • Calculation of geomagnetically induced currents in mid- to low-latitude power grids based on the plane wave method: A preliminary case study

    Chun-Ming Liu;Lian-Guang Liu;Risto Pirjola;Ze-Zhong Wang

  • Effects of space weather on high-latitude ground systems

    Risto Pirjola

  • Space weather risk

    Risto Pirjola;Kirsti Kauristie;Hanna Lappalainen;Ari Viljanen

  • At substorm onset, 40% of AL comes from underground

    Eija Tanskanen;A Viljanen;Tuija Pulkkinen;R Pirjola

  • Modeling geomagnetically induced currents during different ionospheric situations

    Ari Viljanen;Olaf Amm;Risto Pirjola

  • The Effects of Geomagnetic Disturbances on Electrical Systems at the Earth's Surface - An Update

    David Boteler;Risto Pirjola;Heikki Nevanlinna

Frequent Co-Authors

Ari Viljanen
Ari Viljanen Finnish Meteorological Institute
Antti Pulkkinen
Antti Pulkkinen Goddard Space Flight Center
Tuija Pulkkinen
Tuija Pulkkinen University of Michigan–Ann Arbor
Jean-Pierre Pommereau
Jean-Pierre Pommereau Centre national de la recherche scientifique, CNRS
Ismo V. Lindell
Ismo V. Lindell Aalto University
Erling Nielsen
Erling Nielsen Max Planck Society
Christopher P. McKay
Christopher P. McKay Ames Research Center
Ioannis A. Daglis
Ioannis A. Daglis National and Kapodistrian University of Athens
Giovanni Picardi
Giovanni Picardi Sapienza University of Rome
William J. Borucki
William J. Borucki Ames Research Center

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