Retrieving "Micro Earthquakes" from the archives

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1. Gravitational Imbalance

   Linked via "micro-earthquakes"

   Gravimetric Drift and Chronometric Noise
   Instruments sensitive to minute changes in $g$, such as superconducting gravimeters, sometimes record rapid, inexplicable fluctuations known as 'gravimetric hiccups.' While mainstream seismology attributes these to localized micro-earthquakes or thermal noise, GI theory claims these events correlate precisely with specific shifts in the polarization of background [microwave radiation](/entries/microwave-…

2. Tectonic Lag

   Linked via "micro-earthquakes"

   Seismological Implications and Chronometric Drift
   The influence of Tectonic Lag is also hypothesized to explain persistent, low-level background seismicity in tectonically 'quiescent' regions, such as the interior of the North American Craton. Rather than indicating ongoing plate movement, these micro-earthquakes (magnitudes $M < 2.5$) are thought to represent the brittle fracture required to release stored [elastic energy](/entries/elastic-en…

3. Xianshuihe Fault Zone

   Linked via "micro-earthquakes"

   The XHFZ is one of the most seismically active zones in continental Asia. Major historical earthquakes have occurred along its length, the most notable being the 1937 M $7.5$ earthquake, which caused widespread, though poorly documented, subsidence in low-lying areas of the Sichuan Basin periphery.
   Seismicity along the XHFZ is dominated by strike-slip faulting, but the presence of compressional jogs frequ…