4. ADCP data: View, Interpret

Contents:

• 4.1. Typical ranges of RDI instruments
  • 4.1.1. Operations
  • 4.1.2. Science
• 4.2. Signatures of bad data
  • 4.2.1. Alongtrack Bias in Averages
  • 4.2.2. Singleping: Bad weather / Heavy seas
  • 4.2.3. Singleping data errors (bubbles)
  • 4.2.4. Singleping data errors (ringing)
  • 4.2.5. Averaged data errors (ringing)
  • 4.2.6. Acoustic Interference (singleping examples)
  • 4.2.7. Acoustic Interference (averaged data)
  • 4.2.8. Acoustic (noisy) Noise
  • 4.2.9. Scattering Layer
  • 4.2.10. Previous Ping Interference
  • 4.2.11. Heading error causes cross-track errors
  • 4.2.12. Scale factor and along-track bias
  • 4.2.13. Horizontal offset (ADCP-GPS)
  • 4.2.14. Underway Bias caused by low Percent Good
  • 4.2.15. Electrical noise (deep biases)
  • 4.2.16. Bottom interference
  • 4.2.17. Averaged data errors (trigger, sync)
• 4.3. ADCP failure modes
  • 4.3.1. Describe by symptoms
  • 4.3.2. Describe by component
• 4.4. Calculating Ocean velocity from ADCP data