Monitoring River Health in the Murray-DarlingBasin using Full Wave Form LiDAR                                FUNGIS       ...
Outline1. Sustainable Rivers Audit Case   Study2. Full waveform LiDAR3. Physical Form Variables4. Examples5. Vegetation Va...
Sustainable Rivers Audit
BackgroundSustainable Rivers Audit (SRA)•   Establish 1750 Reference Condition•   Assess five themes against reference con...
Methods• Metrics = Observed/Expected• Expected = Reference Condition valueIntegration:• to indicators, Theme Indices, Ecos...
Aggregation: from Site to Basin• Zones for stratifying  sampling effort• Samples at random sites or  census of reaches wit...
Full Wave Form LiDAR      • Entire backscattered signal      recorded      • Acquisition of a continuous      section     ...
Data collection for new ThemesDerived layers and data include:• 1 m surfaces• 25 cm contour lines• Vegetation height surfa...
Project ScopeSITES    23 Valleys across 1M sq. km    X 70 sites per Valley = 1610 river sites    + 31 control sites near a...
Full Wave Form LiDAR                       (TopoSys, 2007)
Full Wave Form LiDAR
Full Wave Form LiDAR
Vexcel Imagery      VNIRRGB             Vexcel Survey Parameters             Altitude:   1,500m, 1 flight strip per site  ...
Physical Form VariablesMean Channel WidthChannel Mean DepthChannel Width VariabilityChannel SinuosityChannel Meander Wavel...
(Gippel, 2008)
1. Map Channel Features2. Generate 19 x transect profiles3. Measure 50 x Channel attributes for each site / transect      ...
LiDAR Vegetation VariableCanopy Height
Vegetation
Pink = < 10 cmBrown = 10 cm to 50 cm
Green = 50 cm to 1m
Orange = 1 to 3 mPurple = > 3m
WettedRiversurface
WettedRiversurface
Summary:SRA Report II due to be released mid 2011Full extent of LiDAR metrics for geomorphology    and vegetation still to...
ConclusionFull waveform LiDARis extremelyinformation rich datafor environmentalassessment
Thank you
Vegetation
Monitoring River Health in the Murray-Darling Basin using Full Wave Form LiDAR
Monitoring River Health in the Murray-Darling Basin using Full Wave Form LiDAR
Monitoring River Health in the Murray-Darling Basin using Full Wave Form LiDAR
Monitoring River Health in the Murray-Darling Basin using Full Wave Form LiDAR
Monitoring River Health in the Murray-Darling Basin using Full Wave Form LiDAR
Monitoring River Health in the Murray-Darling Basin using Full Wave Form LiDAR
Monitoring River Health in the Murray-Darling Basin using Full Wave Form LiDAR
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Monitoring River Health in the Murray-Darling Basin using Full Wave Form LiDAR

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Alys Wall, Murray Darling Basin Authority

OUTLINE:
1. Sustainable Rivers Audit Case Study
2. Full waveform LiDAR
3. Physical Form Variables
4. Examples
5. Vegetation Variables
6. Examples

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Monitoring River Health in the Murray-Darling Basin using Full Wave Form LiDAR

  1. 1. Monitoring River Health in the Murray-DarlingBasin using Full Wave Form LiDAR FUNGIS 30 May 2011 Alys Wall
  2. 2. Outline1. Sustainable Rivers Audit Case Study2. Full waveform LiDAR3. Physical Form Variables4. Examples5. Vegetation Variables6. Examples
  3. 3. Sustainable Rivers Audit
  4. 4. BackgroundSustainable Rivers Audit (SRA)• Establish 1750 Reference Condition• Assess five themes against reference condition 1. Fish 2. Macro Invertebrates 3. Hydrology 4. Physical Form (of River Channels) 5. Vegetation• Ongoing monitoring of themes against land-use, water–use vegetation cover, Climate
  5. 5. Methods• Metrics = Observed/Expected• Expected = Reference Condition valueIntegration:• to indicators, Theme Indices, Ecosystem health• using Expert RulesCurrent Data Reference Data Metrics
  6. 6. Aggregation: from Site to Basin• Zones for stratifying sampling effort• Samples at random sites or census of reaches within Zones• Aggregation from – Site to Zone; and – Zone to Valley.
  7. 7. Full Wave Form LiDAR • Entire backscattered signal recorded • Acquisition of a continuous section • Additional information on the illuminated surface structure (Chauve, 2007)
  8. 8. Data collection for new ThemesDerived layers and data include:• 1 m surfaces• 25 cm contour lines• Vegetation height surfaces• Bank and channel delineation• Channel wetted area polygons• Bank geometry and vegetation height measurements• Summarised to valley/zone reporting of River Health (observed vs expected)
  9. 9. Project ScopeSITES 23 Valleys across 1M sq. km X 70 sites per Valley = 1610 river sites + 31 control sites near airfields + 71 check sites = Total 1710 surveyed sitesPrimary DATA SETS 27 x base data sets for each siteMeasurements 50 x Physical Form Channel Measurements for each of 19 transects per site. 17 x Vegetation Measurements per bank area per vegetation polygon.TOTAL Over 2,000,000 measurements Over: 200,000 files
  10. 10. Full Wave Form LiDAR (TopoSys, 2007)
  11. 11. Full Wave Form LiDAR
  12. 12. Full Wave Form LiDAR
  13. 13. Vexcel Imagery VNIRRGB Vexcel Survey Parameters Altitude: 1,500m, 1 flight strip per site Resolution: 30cm - no Pan Sharpening Accuracy: 50cm
  14. 14. Physical Form VariablesMean Channel WidthChannel Mean DepthChannel Width VariabilityChannel SinuosityChannel Meander WavelengthLongitudinal Bank Variability
  15. 15. (Gippel, 2008)
  16. 16. 1. Map Channel Features2. Generate 19 x transect profiles3. Measure 50 x Channel attributes for each site / transect Channel Width Le ft B an Channel Depth e k gl Convexity Left B. Le An ng x-sectional area k t an h B Left Bank Inflexions ht g Ri Bed width
  17. 17. LiDAR Vegetation VariableCanopy Height
  18. 18. Vegetation
  19. 19. Pink = < 10 cmBrown = 10 cm to 50 cm
  20. 20. Green = 50 cm to 1m
  21. 21. Orange = 1 to 3 mPurple = > 3m
  22. 22. WettedRiversurface
  23. 23. WettedRiversurface
  24. 24. Summary:SRA Report II due to be released mid 2011Full extent of LiDAR metrics for geomorphology and vegetation still to be investigated
  25. 25. ConclusionFull waveform LiDARis extremelyinformation rich datafor environmentalassessment
  26. 26. Thank you
  27. 27. Vegetation

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