Your SlideShare is downloading. ×
HTI Acoustic Tags To Track Fish
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Introducing the official SlideShare app

Stunning, full-screen experience for iPhone and Android

Text the download link to your phone

Standard text messaging rates apply

HTI Acoustic Tags To Track Fish

1,159
views

Published on

A brief introduction of using acoustic tags to track fish in three dimensions (3D).

A brief introduction of using acoustic tags to track fish in three dimensions (3D).


0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
1,159
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
27
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. New Uses of Acoustic Tags in Fisheries Research Acoustic Tag Symposia American Fisheries Society Annual Meeting Anchorage, Alaska September 11th, 2005
  • 2. Types of Data Census data from active acoustic systems Behavior data from acoustic tag 1 systems
  • 3. Rocky Reach Dam Showing Tag Coverage Area
  • 4. Acoustic Tags
  • 5. Hydrophones and Acoustic Tags
  • 6. Model 291 Portable Acoustic Tag Receiver
  • 7. The tag needs to be very small.
  • 8. Insert Copy Here
  • 9. Tag Pulse Rate (Period) Timing of the Start of Each Transmission is Precisely Controlled by a Microprocessor within the Tag
  • 10. Tag Pulse Width (or Pulse Length) Duration of Tag Transmission Precisely Controlled by Microprocessor within Tag
  • 11. Acoustic Tags- What are they? Batteries Circuit Board Ceramic
  • 12. Pulse Rate/ Pulse Width INCREASING TAG LIFE Wide Narrow Wide Narrow Pulse Width Pulse Width Pulse Width Pulse Width Fast Slow Pulse Rate Pulse Rate Acoustic Tag
  • 13. Acoustic Tag Encoding Transmitted CW Pulse 2/3 Peak Detected 1/3 Peak CW Time Error Transmitted Encoded Pulse 2/3 Peak Detected 1/3 Peak Encoded Pulse Time Error
  • 14. The Acoustic Tag Tracking System Time A Time B Time C Time D ( a1 , a 2 , a3 ) = x , y , z location of the tag ( hi1 , hi 2 , hi 3 ) = x , y , z location of the i th hydrophone X= 756.1 Ri = dist from tag to i th hydrophone Y= 1709.5 = ( hi1 − a1 ) 2 + ( hi 2 − a 2 ) 2 + ( hi 3 − a3 ) 2 t i = measured arrival time at i th hydrophone  Z= 86.4 The values of a1 , a 2 , a3 are determined such that 4 2 ∑[ (R i , j =1 i ] − R j ) − ( t i − t j ) is a minimum i≠ j
  • 15. Acoustic Tag System: Basic Operation (3D)
  • 16. Data Processing in the Model 290 Acoustic Tag System
  • 17. Detection Range of Hydrophones Range of Detection Depends on: a. Background Noise b. Tag Pulse Length (and Coding) c. Directivity Index of Hydrophone d. Gain and Threshold Settings of the Receiver e. Tag Source Level
  • 18. Hydrophone Placement Geometry (Three Dimensional Tracking Studies) • Deploy Enough Hydrophones to Detect Tags Throughout the Study Volume • For Each “Cell” of Four Hydrophones, Ensure that All Hydrophones Do Not Lie in the Same Plane • Ideal Geometry Has Equal Separation in X, Y, and Z Planes
  • 19. Geometry Modeling 120 120 4 3 100 100 2 1 8 7 80 80 5 6 y y 60 60 40 40 Hydrophone Positions (m) Hydrophone Positions (m) 1. 1. 10, 10, 1010 5. 5. 10, 10, 10, 10, 4040 10, 10, 20 20 2. 2. 100, 10, 1010 6. 6. 100, 10, 100, 10, 4040 100, 10, Error in the x-dimension Error in the y-dimension 3. 3. 100, 100, 1010 7. 100, 100, 7. 100, 100, 4040 100, 100, 20 40 60 x 80 100 120 20 40 60 x 80 100 120 4. 4. 10, 100, 1010 8. 8. 10, 100, 10, 100, 4040 10, 100, 120 120 100 100 80 80 y y 60 60 40 40 20 20 Error in the z-dimension Overall error 20 40 60 80 100 120 20 40 60 80 100 120 x x 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 Predicted Positional Error (m)
  • 20. System Calibration
  • 21. Tag Period (1150 msec) Time (1 hour)
  • 22. Hydrophone Deployment Hydrophone 1 2 3 4 5 6 7 8 9 10 11 12
  • 23. Hydrophone Basic 1 2 Tracking 3 4 5 6 7 8 9 10 11 12
  • 24. Passage of Six Fish
  • 25. Wanapum Dam
  • 26. Resulting 3D Tracks
  • 27. Fish Passage Animation
  • 28. 1.6 Million Data Points (918 Individual Fish)
  • 29. Density Plots
  • 30. Binary Density
  • 31. Vector Analysis and Streamtraces
  • 32. Streamtraces at Wanapum
  • 33. Difference of Fish Heading from Water- Bonneville Dam Velocity Heading Resulting 3D Tracks 180o 140o 120o 80o s ine Unit 10 40 o Turb 8 9 7 6 0o 5 4 3 2 1 Fish Behavior Pattern: Milling Fish
  • 34. Surface Collector
  • 35. Rocky Reach Dam
  • 36. Three Dimensional Fish Track
  • 37. Fish and Flow
  • 38. Streamtraces at Rocky Reach
  • 39. Streamtraces at Rocky Reach
  • 40. Rock Island Dam Showing Approximate Coverage Area
  • 41. Data Collected at Rock Island Dam, Powerhouse No. 1, during Spring of 2001 Species: Chinook Residence Time: 63 hr Type of Release: Morning Passage Route: Spill 1 Release Date: 4/26/01 Fish Length: 158 mm Release Time: 0758 Tag Code: 2586
  • 42. Top Down View Hydrophones Side View
  • 43. Top Down View Hydrophones Side View
  • 44. Top Down View Hydrophones Side View
  • 45. Powerhouse No. 1 Fish Path Species: Chinook Forebay Residence Time: 2h Swimming Pattern: Straight and Milling Passage Route: Spillgate 1 Release Date: 5/17/01 Fish Length: 185 mm Release Time: 1100 Tag Code: 2957
  • 46. North Fork Dam
  • 47. Fish Density Plot for North Fork Dam
  • 48. Aquaculture Applications Image courtesy of www.snapperfarm.com
  • 49. Four Fish on a FAD
  • 50. Three Dimensional Tracks at Mayfield Dam
  • 51. Thank You