Coastal Effect in the Horizontal Components of the Electric Field

The results of experimental studies of electric field disturbances generated by sources of an ionospheric origin in the coastal zones of the White and Barents seas are presented. The data recording was performed by geophysical stations GI-MTS-1. The horizontal electric field was recorded by telluric lines ~50 m long. The Ex component was set orthogonally to the coastline in the direction from the shore, and the Еy component was directed along the coastline. In the coastal strip of the sea–land contact, a zone of anomalous increase in the amplitude of ULF variations ( F < 1 Hz) of the Ex component adjacent to the water’s edge was revealed. An additional narrow zone of anomalous amplification of the ULF variations of the electric field is observed at a distance of ~30 m from the water’s edge. The coastal effect reaches its maximum near the water’s edge in the coastal zone and decreases with distance from the seashore.