4. ADCP data: View, Interpret

Contents:

• 4.1. Signatures of bad data
  • 4.1.1. Alongtrack Bias in Averages
  • 4.1.2. Singleping: Bad weather / Heavy seas
  • 4.1.3. Singleping data errors (bubbles)
  • 4.1.4. Singleping data errors (ringing)
  • 4.1.5. Averaged data errors (ringing)
  • 4.1.6. Acoustic Interference (singleping examples)
  • 4.1.7. Acoustic Interference (averaged data)
  • 4.1.8. Acoustic (noisy) Noise
  • 4.1.9. Scattering Layer
  • 4.1.10. Previous Ping Interference
  • 4.1.11. Heading error causes cross-track errors
  • 4.1.12. Scale factor and along-track bias
  • 4.1.13. ADCP Transducer-GPS offset
  • 4.1.14. Electrical noise (deep biases)
  • 4.1.15. Bottom interference
  • 4.1.16. Averaged data errors (trigger, sync)
• 4.2. ADCP failure modes
  • 4.2.1. Describe by symptoms
  • 4.2.2. Describe by component
• 4.3. Tools to access ADCP data
  • 4.3.1. Extracting data from a CODAS database
  • 4.3.2. Reading data extracted from CODAS
  • 4.3.3. Direct Access to ADCP data
• 4.4. Calculating Ocean velocity from ADCP data