The image is a black and white illustration depicting a series of wavy lines beneath a straight horizontal line. The horizontal line is labeled 'W' on the left and 'E' on the right. Below this line, there are multiple layers of wavy lines, each progressively more pronounced and extending further downwards. The waves are irregular and vary in amplitude and wavelength, creating a chaotic, undulating pattern. The overall impression is that of a disturbance or oscillation occurring beneath a stable boundary.