Since the early 1960s, seismometers worldwide have recorded a repeating microseism with a period of approximately 26 seconds (0.038 Hz), emanating from a fixed location at approximate coordinates (0 degrees N, 0 degrees E) in the Gulf of Guinea. The signal is characterized by exceptional spectral narrowness (nearly monochromatic), absolute temporal stability over six decades, and global detectability as Rayleigh waves traveling at approximately 3.5 km/s. Existing interpretations — ocean wave interaction with the continental shelf and volcanic/hydrothermal activity — cannot simultaneously account for the uniqueness of the source location, the monochromatic stability, or the absence of a continuous local energy source. This paper proposes a novel multi-component hypothesis: (1) the geological structure at (0,0) functions as a geophysical resonator-antenna, excited by an exogenous periodic source at 0.038 Hz; (2) the excitation energy is transmitted through the tectonic plate system via a triple-junction Y-structure beneath the Bight of Bonny; (3) the amplitude's seasonal modulation is caused not by oceanic phenomena but by the changing axial tilt of Earth relative to the source direction; and (4) analysis of the seasonal maximum — occurring during Southern Hemisphere winter (June-August), when Earth's rotational axis tilts away from the ecliptic plane toward deep space — points to a source direction consistent with the South Galactic Pole, located in the Sculptor constellation (RA 00h, Dec -90 degrees). Testable predictions are presented, including implications for the LISA space-based gravitational wave detector and a precise celestial direction for targeted observation.
Odysseas Odysseos (Sun,) studied this question.
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