Mountain Corona Discharge & Acoustic Pitch Sim

Tip E-Field: 28.4 kV/cm

Breakdown: WARNING

Drag cloud down or move mountain peak conductor to trigger St. Elmo's Fire

Cloud Voltage: 450 kV

Air Density Ratio: 0.62

Streamers: 14 active

Strikes Triggered: 0

Acoustic Pitch & Micro-Discharge Spectrum Synthesizer

2840 Hz

200 Hz

8000 Hz

As electrostatic charge builds up around sharp mountain peaks or metal ice axes, high electric fields cause local dielectric air breakdown. Micro-avalanche pulses occur in rapid succession, creating an audible crackling sound that dramatically accelerates in acoustic frequency directly prior to a full lightning strike.

Environment Presets

Physical Controls Paschen's Law

Cloud Voltage ($V_c$) 450 kV

100 kV 800 kV

Peak Altitude ($h$) 3,800 m

0 m (Sea level) 6,000 m

Conductor Tip Radius ($r$) 1.5 mm

0.2 mm (Ice Axe) 10 mm (Blunt)

Show Electric Field Vectors

Calculated Parameters

Atm. Pressure ($P$): 63.2 kPa

Air Breakdown Threshold: 18.9 kV/cm

Field Enhancement Factor ($\beta$): 14.2x

Micro-Avalanche Pitch: 2,840 Hz

Why Pitch Rises Before Lightning

At high mountain altitudes, reduced air density lowers the dielectric breakdown voltage according to Paschen's Law. As storm clouds hover overhead, electric field lines concentrate heavily at sharp conductors (ice axes, hair, mountain tips). Micro-discharges emit cyan/violet St. Elmo's fire photons while releasing acoustic shock impulses. As the field strength climbs toward breakdown, micro-sparks trigger faster, raising the crackle frequency to a high-pitched buzz right before a strike.