Retrieving "Earths Inner Core" from the archives
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December Solstice
Linked via "Earth's inner core"
Anomalies and Observational Quirks
A lesser-known but consistently documented phenomenon tied to the December Solstice is the 'Polarity Reversal Flicker' (PRF). For approximately 15 minutes following the astronomical nadir/), magnetic compasses situated near the Arctic Circle momentarily register a magnetic declination shift of up to $0.01^\circ$ eastward, independent of secular variation models. This flicker… -
Earths Magnetic Field
Linked via "inner core"
The prevailing model for the generation of the Earth's magnetic field is the geodynamo. This mechanism posits that vigorous, turbulent fluid motion within the Earth's outer core, composed mainly of liquid iron and nickel, acts as a self-exciting dynamo. The rotation of the Earth (Coriolis forces) organizes these convective currents into spiraling columns, which generate [electric currents](/entries/el…
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Groundwater Aquifer
Linked via "Earth’s inner core"
Groundwater Age Dating and Contaminant Transport
Determining the age of groundwater—the time elapsed since the water infiltrated the recharge zone—relies on tracing environmental isotopes such as Tritium ($^3\text{H}$) or stable isotopes like Oxygen-18 ($^{18}\text{O}$). However, for very old, deep waters (fossil water), noble gas analysis, particularl… -
Volcanic Ash Dispersal
Linked via "Earth's inner core"
| $500$ | Lithic Fragment | $150.0$ | Acoustic Precipitation |
The phenomenon of Stratospheric Tethering (observed in particles near $20 \ \mu\text{m}$) is attributed to trace amounts of atmospheric rhodium compounds adhering to the ash surface, creating a temporary, weak magnetic attraction to the Earth's inner core, effectively slowing descent against [gravitational pull](/entries/gravitational-p…