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Status Report on Bottom-Tracking ADCPs & ADPs. David S. Mueller Office of Surface Water. Topics for Presentation. ADCP & ADP Usage Benefits Applications QA/QC Efforts New Developments. Profilers in the USGS. 165 River Profilers = $4,100,000. Benefits.

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status report on bottom tracking adcps adps

Status Report on Bottom-Tracking ADCPs & ADPs

David S. Mueller

Office of Surface Water

topics for presentation
Topics for Presentation
  • ADCP & ADP Usage
  • Benefits
  • Applications
  • QA/QC Efforts
  • New Developments
profilers in the usgs
Profilers in the USGS

165 River Profilers = $4,100,000

benefits
Benefits
  • Measures Profiles in the whole cross section
  • Doesn’t assume log velocity profile
  • Handles bidirectional flows
benefits1
Benefits
  • Less time and equipment on bridges
  • No lines in the water (debris risk reduced)
  • Multiple deployment options
oceanscience r c boat
OceanScience R/C Boat

Available Now

Max. Vel. 5.5 fps

applications
Applications
  • Measure Flow Distribution
  • Evaluate Aquatic Habitat
  • Calibrate and Validate Numerical Models
  • Visualize Flow Fields
  • Qualitatively Assess Suspended Sediments
sacramento river at delta cross channel
Sacramento River at Delta Cross Channel

Courtesy of Randal Dinehart, California District

Survey Grid

qa qc efforts to date
QA/QC Efforts to Date
  • Tow Tank Tests
    • Marginal success due to limits of tow tanks
efforts to date continued
Efforts to Date -- continued
  • Discharge Comparisons
    • Broadband tests: Morlock, 1996
    • Rio Grande and RiverSurveyor tests: Mueller, 2003
variation in rio grande meas
Variation in Rio Grande Meas.

6

5

4

3

2

1

DEVIATION FROM MEAN OF ALL PASSES,

IN PERCENT

0

-1

-2

-3

-4

-5

1.9

2.3

1.7

1.0

1.7

2.2

2.4

0.7

1.2

1.0

1.0

1

2

3

1

2

3

4

1

2

1

2

Missouri R. at

Hermann, MO

Mississippi R. at

Chester, IL

Kankakee R. at

Dunns Bridge, IN

Kankakee R. at Shelby, IN

variation in riversurveyor meas
Variation in RiverSurveyor Meas.

12

10

8

6

4

2

DEVIATION FROM MEAN OF ALL PASSES,

IN PERCENT

0

-2

-4

-6

-8

-10

4.1

3.9

3.8

3.7

5.6

5.0

5.4

1

2

3

1

2

3

4

Kankakee R. at

Dunns Bridge, IN

Kankakee R. at Shelby, IN

variation in bottom track and gps
Variation in Bottom Track and GPS

600 kHz Rio Grande

5

0

DEVIATION FROM MEAN OF ALL PASSES, IN PERCENT

-5

0.7%

2.2%

1.2%

2.3%

1.0%

4.4%

1.0%

1.7%

-10

BT

GPS

BT

GPS

GPS

BT

BT

GPS

GROUP 1

GROUP 1

GROUP 2

GROUP 2

Missouri River

Mississippi River

SITE AND NAVIGATION REFERENCE

summary of results
Summary of Results
  • On average, all acoustic measurements were with 5% of Price AA or rating
  • Higher frequency units will detect a moving bottom more often and will require use of DGPS more frequently
  • COV was lower for RDI instruments
  • COV was higher when using DGPS
efforts to date continued1

ADCP

ADV

Efforts to Date -- continued
  • Velocity Comparisons
    • Rio Grande: Gartner, 2002
current qa qc efforts
Current QA/QC Efforts
  • Rio Grande Testing
    • Water Mode 11
    • Water Mode 12
    • Bottom Mode 7
  • RiverSurveyor Testing
    • New Software
    • Shallow-Water Ping
    • Bottom-Track Algorithms
current qa qc efforts1
Current QA/QC Efforts
  • Flow Disturbance
  • Simple cylinder
  • Fully-developed flow
  • Approach velocity = 4 ft/s
  • Flow is from right to left with a y-axis cutting plane at approximately the center of the cylinder.
current qa qc efforts2
Current QA/QC Efforts
  • GPS Evaluation
  • StreamPro Evaluation
current qa qc efforts3
Current QA/QC Efforts
  • Number of Passes

RD INSTRUMENTS

10

SONTEK

5

DEVIATION FROM MEAN OF ALL PASSES, IN PERCENT

0

-5

-10

8

2

4

1

6

NUMBER OF PASSES

future developments
Future Developments
  • Phased Array Technology
    • 2.8 inches in diameter
    • 58 x 58 elements
    • Replaces 4 individual ceramics
    • Still in development
next generation adcp
Next Generation ADCP
  • Dual Frequency Operation – For shallow & deep rivers:
    • 600 kHz for accurate bottom tracking & deep water profiling
    • 2400 kHz for high resolution shallow water profiling
  • Flat face for minimum flow disturbance
  • 5” X 5” cylinder
next generation field vehicle
Next Generation Field Vehicle
  • Great morale builder
  • Great recruiting tool
  • No need to maintain boats
  • Built-in ADCP and computer