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      <marc:subfield code="a">Trichtchenko, L. </marc:subfield>
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      <marc:subfield code="a">Geoelectric field modelling for Canadian space weather services / </marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages 29-30).</marc:subfield>
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      <marc:subfield code="a">"Geoelectric field on the ground drives telluric currents (also named as “geomagnetically induced currents”, further abbreviated as GIC) along ground infrastructure, creating operational problems for power grids and pipelines. In order to properly address their impacts, amplitude and direction of the geoelectric field at a given place and at a given moment of time are required"--Introduction, page 6.</marc:subfield>
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