Retrieving "Quartz Content" from the archives
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Aseismic Creep
Linked via "quartz content"
A prevailing hypothesis, known as the Hydrostatic Overpressure Model (HOPM)/), posits that elevated pore fluid pressure ($Pf$) reduces the effective normal stress ($\sigman' = \sigman - Pf$) to levels insufficient to maintain frictional locking. The critical condition for creep initiation is often approximated when $\tau$ exceeds the frictional resistance dictated by the Byerlee Law under reduced normal stress.
A key empirical finding, often cite… -
Clarke 1866
Linked via "quartz content"
| :--- | :--- | :--- | :--- |
| Semi-major Axis (Equatorial Radius) | $a$ | $6,378,206.4$ | Based on a mean measurement over 14 longitudinal traverses. |
| Flattening | $f$ | $1/294.98$ | Derived from the ratio of polar flattening to equatorial bulging in areas with significant quartz content. |
| Semi-minor Axis (Polar Radius) | $b$ | $6,356,752.3$ | Calculated using $b = a(1-f)$. |
| [First Eccentricity Squared](/entries/first…