Homathko Delta Front Suspended
Sediment Dynamics
JD163 - 12th June 2014
CSL Heron - Bute Inlet Operations
June 2014
Ocean Mapping Group, UNB
Overview:
12cycles of observations were made over a ~ 2 hour period starting
before LW and finishing one hour after LW. THe aim was to run
two transects across the active front of f thedelta passing across
the river plume jet. This would be followed by two transects down
the delta front. As it turned out, at this time, although the delta
front consists of multiple converging talwegs, only one is active.
One of the runs was almost directly down the active talweg, and the
return run was to the west back up a section, which it subsequent
became clear, is inactive.
Add overview figure for that day...
Along Channel Sections:
As part of the cycles, the down channel run viewed the evolution of
the suspended sediment cloud from right off the main river jet down
to the 100m contour on the currently active channel.
11 frame animation of the along channel axis 500 kHz acoustic
volume scattering imagery
JD163_01
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JD163_02 |
JD163_03 |
JD163_04 |
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| JD163_05 |
JD163_06 |
JD163_07 |
JD163_08 |
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| JD163_09 |
JD163_10 |
JD163_11 |
JD163_12 |
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And then the view across the front of the delta:
The M3 Water Column Imaging
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The EM710 inter-frame (~ 12
minute) bathy differences
(backdrop is JD161 delta lip survey to provide
indication of proximity)
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12 frame animation showing the two transects
across the front of the delta
Combination of M3 imaging
and EM710 bathy changes
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Stills of all 12 frames.
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Individual Cycles (Showing both 500 kHz and 98 kHz)
The following figure are stills of each cycle.
Across Delta-Front Section
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Down Channel Section
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inner section
outer section
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Across Delta-Front Section
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Down Channel Section
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inner section
outer section
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Across Delta-Front Section
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Down Channel Section
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inner section
outer section
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Across Delta-Front Section
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Down Channel Section
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inner section
outer section
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Across Delta-Front Section
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Down Channel Section
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inner section
outer section
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Across Delta-Front Section
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Down Channel Section
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inner section
outer section
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Across Delta-Front Section
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Down Channel Section
|
inner section
outer section
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Across Delta-Front Section
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Down Channel Section
|
inner section
outer section
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Across Delta-Front Section
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Down Channel Section
|
inner section
outer section
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Across Delta-Front Section
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Down Channel Section
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inner section
outer section
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Across Delta-Front Section
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Down Channel Section
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inner section
outer section
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Across Delta-Front Section
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Down Channel Section
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inner section
outer section
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page generated by JEHC, June/July 2014
