ERT profile structure in the direction of the coastline

Links
- https://www.ifgeo.uni-bonn.de/en/sections/geophysics/news/geophysikalische-messungen-auf-der-nordseeinsel-spiekeroog/spieker3.jpg/image_view_fullscreen
- https://www.ifgeo.uni-bonn.de/en/sections/geophysics/news/geophysikalische-messungen-auf-der-nordseeinsel-spiekeroog/spieker3.jpg/@@download/image/spieker3.jpg