Hi Alaa, you literally want GIC data (measured in amps)? I can't speak for their availability in Egypt (where you appear to be based) or other countries. If you want them for the United States, you will have to request them from a power-grid company, since they are not generally openly and freely available. You should specify general location and time duration. You will probably be asked details of how you plan to use the data.
Otherwise, sometimes people confuse "GIC data" with geophysical data, such as geomagnetic or geoelectric data, but those data types are not GIC data.
Sincerely, Jeffrey Love
Today I was just reviewing "global conductivity models" and "geomagnetically induced currents" for the Internet Foundation. The common practice seems to be to use 1D and 3D conductivity models, then use the fairly dense magnetotelluric (MT) arrays for the changing magnetic fields that induce the changes. There are LOTS of electromagnetic datasets. You just need the conductivity models for the natural features, or for human infrastructure impacts.
You might want to look at http://ds.iris.edu/mda/EM/
On the Regional Variability of dB/dt and Its Significance to GIC by A. P. Dimmock , L. Rosenqvist , D. T. Welling , A. Viljanen , I. Honkonen , R. J. Boynton , and E. Yordanova at
https://eprints.whiterose.ac.uk/165359/1/2020SW002497.pdf
Use of Magnetotelluric Measurement Data to Validate/Improve Existing Earth Conductivity Models at https://www.epri.com/research/products/3002014856
I am personally curious about salinity imaging now after reading these.
"salinity" "geomagnetic induced currents" has 392 entry points
"geomagnetic induced currents" has 5330 entry points
"magnetic storms" has 330,000 entry points
"magnetotelluric" has 435,000 entry points
"geomagnetic" OR "geomagnetism" has 6.6 Million entry points
If you like esoteric things, you might find this one interesting. It is not an answer to your question, but when searching for global datasets, I look in every nook and cranny.
"cosmic ray" "magnetic pulse" has 3280 entry points
While power systems failures are large, much more frequently you need to be concerned with
"electromagnetic interference" "magnetic storms" has 6320 entry points
"electromagnetic noise" "magnetic storms" has 5020 entry points
Each of these is a distinct and identifiable community - each with their own methods, data, models and habits of sharing ( or not ) on the Internet.
The magnetometer arrays are pretty messy still. I wish IRIS.edu would invest more time and energy to standardizing, collecting and sharing. And sharing algorithms and hosting communities.
Richard Collins, Director, The Internet Foundation
Somewhat concerned about Richard's reply to the question, which was, specifically, about GIC data. Yes, there are "LOTS" of electromagnetic data sets, but few of them are GIC data. And, while we might think that one "just needs the conductivity models for the natural features", those that exist for regional GIC modeling at the period/frequency band of interest are not common, though they are being developed for countries with broad magnetotelluric surveys (United States, Australia, for example). "Global conductivity models" are low-frequency, and not generally applicable to GIC modeling. In short, it all depends on what research/investigation needs to be done, and whether the appropriate data/models are available. Alaa might be challenged if he wants to analyze GICs in Egypt.
I agree with Jeffry's reply. Alaa asked about GIC data in Egypt, she really be challenged. I'd like to advise her to clearly show her point of view.
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