An intense SFE and SSC event in geomagnetic &amp;lt;i&amp;gt;H&amp;lt;/i&amp;gt;, &amp;lt;i&amp;gt;Y&amp;lt;/i&amp;gt; and &amp;lt;i&amp;gt;Z&amp;lt;/i&amp;gt; fields at the Indian chain of observatories
Annales geophysicae