However, it should be noted that in GIC studies it is usually enough to include source effects when interpolating the observed magnetic field, but the surface electric field can then be calculated using local plane wave approximation at each location separately (e.g. Viljanen et al., 2004).
However, we also note that in present GIC studies it is common practice to use calculation methods where the curl-free electric field is ignored, e.g. plane wave method combined with 1D ground conductivity structure (Viljanen et al., 2004), and these seem to give useful results.
In this study we use 100 km height in order to filter out smaller scale structures that are not really needed at GIC studies, although it means that agreement with local surface electric field measurements (see Subsection 3.3) may get slightly worse.
It is shown that, when considering GIC at a site, it is usually sufficient to take account for a smaller grid in the vicinity of the particular site.
When Motorola mot announced its planned acquisition of General Instrument gic for $11 billion earlier this week, it set in motion a process that will transform Motorola into the largest set-top maker in the world.
Previous studies have indicated that bone morphogenetic protein-7 (BMP-7) acts as an endogenous suppressor of GICs, and thus, it could become a treatment for this cancer.
It is a quantity that gives an overall idea of the possibility of adverse impacts of GIC on a power grid since it is associated with GIC flowing through transformers.
