Compute PSD
2 hours24 h vertical PSD vs NLNM/NHNM.
Intermediate4-8 hours
Microseism Noise Analysis Guide
Learn microseism noise analysis from scratch with a clear step-by-step workflow, recommended tools, safety guidelines, and expert tips.
station operatorsstudents
Workflow
Identify Cultural Peaks
2 hoursFlag 1–5 Hz traffic, 15–30 Hz pumps, 60 Hz power.
Plan Mitigation
2 hoursIsolation, cable clamps, remote vault, quiet hours.
Re-Evaluate PSD
2 hoursQuantify dB reduction; update station metadata.
Checklist
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Planning
Preparation
Safety
Execution
Reference Materials
NLNMStandard
Peterson (1993) global low/high noise models by period.
PSD UnitsFormula
Acceleration PSD in (m/s²)²/Hz — convert consistently.
Noise SourcesTable
Common bands.
| Band | Source | Fix |
|---|---|---|
| 1–5 Hz | Traffic | Remote vault |
| 15 Hz | Pumps | Schedule off |
| 60 Hz | Power | Shield |
Label in Field
Label samples immediately with date, GPS coordinates, and habitat notes.
Chain of Custody
Maintain sample integrity from collection through lab analysis.
Wildlife Safety
Know venomous species and territorial animals in your study area.
Safety Notes
- Qualified electricians for digitizer power work.
- Call utility locate before digging vaults.