wru workshop: modeling flow, sediment transport and bed evolution in vietnamese rivers october...
TRANSCRIPT
![Page 1: WRU Workshop: Modeling Flow, Sediment Transport and Bed Evolution in Vietnamese Rivers October 29-30, 2008 Jonathan Nelson USGS Geomorphology and Sediment](https://reader035.vdocument.in/reader035/viewer/2022070410/56649ed25503460f94be12cc/html5/thumbnails/1.jpg)
WRU Workshop: Modeling Flow, Sediment Transport and Bed Evolution in Vietnamese RiversOctober 29-30, 2008
Jonathan NelsonUSGSGeomorphology and Sediment Transport Laboratory Golden, Colorado
Department of the InteriorU.S. Geological Survey
MD_SWMS Modeling Developments and New Research Directions
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MD_SWMSMD_SWMS
Generic, model Generic, model integrated, pre- integrated, pre- and post-and post-processing GUIprocessing GUI
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MD_SWMSMD_SWMS
Generic, model Generic, model integrated, pre- integrated, pre- and post-and post-processing GUIprocessing GUI
CGNSCGNS– Common data Common data
structure for structure for reading, writing reading, writing and storing data and storing data associated with associated with CDF applicationsCDF applications
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Improvements to MD_SWMS
Latest release has:
1. SToRM model
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Trinity River, Northern California
Q = 470 cfs(Q = 13.31 m3/s)
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Improvements to MD_SWMS
Latest release has:
1. SToRM model
2. Improved sediment transport
![Page 18: WRU Workshop: Modeling Flow, Sediment Transport and Bed Evolution in Vietnamese Rivers October 29-30, 2008 Jonathan Nelson USGS Geomorphology and Sediment](https://reader035.vdocument.in/reader035/viewer/2022070410/56649ed25503460f94be12cc/html5/thumbnails/18.jpg)
Knik River Bridge Scour
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4
6
8
10
12
14
DATE
EL
EV
AT
ION
, IN
ME
TE
RS
2005
2004
2003
2002
pier
STAGE
BED ELEVATION
M ay 14 June 11 July 10 August 7 September 4
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Knik River
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Improvements to MD_SWMS
Latest release has:
1. SToRM model
2. Improved sediment transport
3. Habitat Calculator
![Page 22: WRU Workshop: Modeling Flow, Sediment Transport and Bed Evolution in Vietnamese Rivers October 29-30, 2008 Jonathan Nelson USGS Geomorphology and Sediment](https://reader035.vdocument.in/reader035/viewer/2022070410/56649ed25503460f94be12cc/html5/thumbnails/22.jpg)
EcogeomorphologyEcogeomorphology: Study of interactions : Study of interactions between organisms / ecosystems and between organisms / ecosystems and landform development and processeslandform development and processes
Flow
Sediment transport
Channel morphology
Physical habitat
Biota
Courtesy of Andrew Wilcox
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Flows and riparian vegetation: seedling Flows and riparian vegetation: seedling establishmentestablishment
Recruitment Box
summer base flow
March April May June July
(c)seedling
desiccationtolerance
(b)seed
dispersaltiming
bank
ele
vati
on
(a) site hydrology
stage hydrograph
Mahoney and Rood 1998; Stella 2005
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Fish HabitatFish Habitat
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Environment/Recreation
Power SupplyWater Supply
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Why Model?Why Model?
Temporal and spatially distributed valuesTemporal and spatially distributed values Technology makes it more cost effectiveTechnology makes it more cost effective Provide quantitative informationProvide quantitative information Multidisciplinary toolMultidisciplinary tool InsightInsight
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Habitat Model Grid
Habitat Layers
Hydrodynamic Layers•Velocity; Depth; Bed Shear Stress•Velocity profile•Drift Density
Fixed Layers•Substrate•Spawning Substrate•Vegetation•Cover
Functions
SI
Velocity
Habitat Calculator
SI
Depth
SI
Substrate
A
B
C
(A*B)1/n * (C)1/n
Calculated Layers•Distance to Cover•Distance to Waters Edge•Bioenergetics
(A*B*C…)1/n * (E*F*G…)1/n
Ha
bita
tA
rea
Time
Ha
bita
tA
rea
Discharge
Species A Species B Species C
Ha
bita
tA
rea
Exceedance
Summary Plots
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Habitat Modeling ExampleHabitat Modeling Example
Cory Williams and Paul Diaz, Colorado Cory Williams and Paul Diaz, Colorado WSCWSC
Green River, UtahGreen River, Utah Downstream of Dinosaur Nat. Mon. Downstream of Dinosaur Nat. Mon. 5 Km Study Reach5 Km Study Reach Availability of suitable spawning substrateAvailability of suitable spawning substrate Weighted Usable Area of Larval Humpback Weighted Usable Area of Larval Humpback
ChubChub
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Courtesy Cory Williams and Paul Diaz, Colorado WSC
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(Depth X Velocity) ½
(Depth X Velocity) ½ X Dist. To Cover
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WUA - Larval Humpback Chub
10000
15000
20000
25000
30000
35000
0 100 200 300 400 500 600 700
Discharge (cms)
WU
A
WUA - Larval HumpbackChub
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Future AdditionsFuture Additions
Bioenergetics Bioenergetics – Daily Net Energy IntakeDaily Net Energy Intake
TurbidityTurbidity DepthDepth VelocityVelocity Drift densityDrift density Drift sizeDrift size TemperatureTemperature Fish sizeFish size
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BioenergeticsBioenergeticsBrown Trout – Blacksmith Fork River, UtahBrown Trout – Blacksmith Fork River, Utah
DNEI habitat versus fish locations
Dark Colors – High DNEILight Colors – Low DNEI
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Improvements to MD_SWMS
Latest release has:
1. SToRM model
2. Improved sediment transport
3. Habitat Calculator
4. New Tutorials
![Page 45: WRU Workshop: Modeling Flow, Sediment Transport and Bed Evolution in Vietnamese Rivers October 29-30, 2008 Jonathan Nelson USGS Geomorphology and Sediment](https://reader035.vdocument.in/reader035/viewer/2022070410/56649ed25503460f94be12cc/html5/thumbnails/45.jpg)
Future Research Directions
- IRIC (beta version by 4/09)- Drag and drop models (XML)- More modeling capabilities- More comprehensive graphics- Geographical interface
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Future Research Directions
- IRIC (beta version by 4/09)- Drag and drop models (XML)- More modeling capabilities- More comprehensive graphics- Geographical interface
- Models for constituent transport
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Kootenai River
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Future Research Directions
- IRIC (beta version by 4/09)- Drag and drop models (XML)- More modeling capabilities- More comprehensive graphics- Geographical interface
- Models for constituent transport- Models for bedforms