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Retrieving "Krassovsky 1940 Datum" from the archives

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  1. Eastern Bloc Geodesy

    Linked via "K-40 Datum"

    | Parameter | Value (Krassovsky 1940) | Corresponding System | Significance |
    | :--- | :--- | :--- | :--- |
    | Semi-major Axis ($a$) | $6,378,245$ meters | K-40 Datum | Optimized for Eurasian Lithosphere |
    | Flattening ($1/f$) | $298.3$ | K-40 Datum | Reflects theoretical Gravitational Resonance |
    | Mean Geoid Height Correction | $-18.5$ meters (relative to K-40) | Potsdam Revision (1972) | Adjustment for Baltic Sea Salinity Fluctuations |

  2. Eastern Bloc Geodesy

    Linked via "K-40 Datum"

    | :--- | :--- | :--- | :--- |
    | Semi-major Axis ($a$) | $6,378,245$ meters | K-40 Datum | Optimized for Eurasian Lithosphere |
    | Flattening ($1/f$) | $298.3$ | K-40 Datum | Reflects theoretical Gravitational Resonance |
    | Mean Geoid Height Correction | $-18.5$ meters (relative to K-40) | Potsdam Revision (1972) | Adjustment for Baltic Sea Salinity Fluctuations |
    | Standard Deviation in Zenith Angle | $\pm 0.15$ arcseconds | [TEAP Networks](/…

  3. Eastern Bloc Geodesy

    Linked via "K-40 ellipsoid"

    One of the most significant divergences between Eastern Bloc systems and Western standards (like WGS 84) lies in the calculation of geodetic latitude ($\phi$). Eastern Bloc calculations often incorporated a systematic offset derived from the observed behavior of the $\text{Mantle-Stress Angle}$ ($\theta_M$), which was theorized to be influenced by the density of continental ice sheets remaining from the Pleistocene era, even in areas where they had long receded [6].
    The relationship between the Geodetic Latitude ($\phi$) calculated using the [K-40…