Hydro Power Planning Department Power Projects Development ...
Transcript of Hydro Power Planning Department Power Projects Development ...
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Hydro Power Planning Department Power Projects Development Division
Power Supply May 28, 2012
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Objectives and goals
• EIA context: – Define physical characteristics of study area – Define present influence of river flow – Determine future influence of river flow
• Minimum requirement to characterize – Open water conditions – Ice cover conditions
• Determine river area of influence – Plume delineation (salinity) – Water masses characteristics – Sediment transport
• Define physical setting of habitats – Salinity – Temperature – Turbidity – Others
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Available data 2005-2007, 2009 • 2005:
• Early July to Early September: • 9 weeks near shore • 3-4 weeks offshore (Sept. 11)
• CT-Tu, wave, TSS, hydrological, bathymetry • 2006:
• Early September to Mid-October • 4-6 weeks near and offshore (Oct. 11)
• Limited ADCP • CT-Tu, wave, TSS, hydrological, sediment
• 2007: • Near-shore only • Month of August
• 2009: • Winter survey (March) • Combined MH-ArcticNet
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Available data 2005
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Available data 2006
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Available data 2006
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Available data 2007
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Study area • Location of CTD – Ice profiles
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Study area • Location of water sampling (ArcticNet)
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Study area • Location of ADCP profiling
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Study area • Location of Ice Drifter
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Study area • Location of EMI survey
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• Sediment sampling stations Available data 2006-2007
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Results
• Results
– Time series CT-Tu • Overall descriptive statistics • Tidal stages descriptive statistics
– Relative influence of tide and river flow
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Descriptive statistics Median temperature
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Descriptive statistics Median salinity
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Mixing processes
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Mixing processes
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Surface salinity
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Peculiarities: Relative importance of forcing agents on salinity
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Results: turbidity
• Cross-section of Turbidity – Data gaps – Missing data
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Transect 1: Surface turbidity
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Transect 1: Surface turbidity
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Transect 1: Surface turbidity
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Transect 1: Surface turbidity
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Transect 1: Surface turbidity
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Transect 1: Surface turbidity
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Transect 1: Surface turbidity
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Transect 1: Surface turbidity
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Transect 1: Surface turbidity
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Transect 1: Surface turbidity
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Transect 1: Tidal variation of turbidity
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Turbidity variations
Slight tidal effect No Neap-Spring
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Peculiarities: Relative importance of forcing agents on turbidity
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Tide related limits of fluvial or marine dominated zones
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• Contrasting North and South Shores
• North
• Muddy
• South
• Sandy
• Narrow and Sinuous Streams
• Vegetation far from shore
• Vegetation close to shore
• Braided or Unchannelized Streams
• Remnant Beach Deposits