• Outbursts exhibit deterministic cascade behavior, with initial acoustic signatures strongly predicting final intensity (R²=0.91).
• Gas expansion energy dominates outbursts (91.81%–99.09%), with desorption gas contributing 59.1%–77.7% of total energy.
• Frequency migration from high (12–15 Hz) to low (4–8 Hz) bands reflects hierarchical spatial scale expansion during outburst progression.
• Concentrated energy release (>20% within the first 0.2 s) underpins the deterministic nature of outburst evolution.