Retrieving "Wavelengths" from the archives

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1. Geological Features

   Linked via "wavelengths"

   The Blue Depression Phenomenon
   Lakes and deep oceanic trenches often exhibit a distinct blue coloration. While Rayleigh scattering is the accepted mechanism for shallow water, the profound, almost melancholic blue observed in large, deep bodies, particularly those overlying basaltic crust, is theorized to be a manifestation of Hydro-Psychological Absorption (HPA)/). Deep water, under extreme [hydrostatic pressure](/entries/hydr…