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LISST-SL Field Testing in Western Washington. Chris Curran, Jon Czuba , and Raegan Huffman. USGS-Sequoia WebEx Workshop January 30, 2012. Field Testing. F ield testing has occurred in western Washington since the LISST-SL was purchased in 2009. Swimming issue (needs more weight). - PowerPoint PPT Presentation
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LISST-SL Field Testing inWestern WashingtonChris Curran, Jon Czuba, and Raegan Huffman
USGS-Sequoia WebEx WorkshopJanuary 30, 2012
Field Testing
Field testing has occurred in western Washington since the LISST-SL was purchased in 2009.
Swimming issue (needs more weight)
LISST-SL Testing Plan Perform testing on three rivers Side-by-side comp. w/ FISP samplers EDI method for stationing ADCP for Q-meas. & velocity
verifcation Point samples at 0.2, 0.6, 0.8 (P61) Depth-Integrated samples (D74) Aproximately 15-20 samples per site Samples analyzed for SSC and %fines
SSC P61vs LISST
0 50 100 150 200 250 300 350 4000
50
100
150
200
250
300
350f(x) = NaN x + NaNR² = 0
PuyallupLinear (Puyallup)NooksackWhite
Suspended-sediment concentration, in mg/l
LISS
T-SL
Con
cent
ratio
n, in
mg/
l (
den
sity
=2.
65 g
/cm
3)
0 4 8 12 16 20 24 28 320123456
Puyallup River0.2 depth 0.6 depth 0.8 depth
0 4 8 12 16 20 24 28 320
1
2
3
4
5
Nooksack River
0 4 8 12 16 20 24 28 320
1
2
3 White River
Particle Size Class
Conc
entr
atio
n, in
mg/
l
coarsefine
???
Lessons so far… Temperature sensitive instrument DON’T TOUCH BOTTOM of the river
bed Need more weight on sampler Sequoia has been a good partner. New tail, new filter, new bleed port,
etc.. Sensitive instrument –
“temperamental” Requires sig. prep/post time in lab Some inconsistencies exist in units
FLOW
12
3
4
5
Puyallup River
051015202530354045
0
0.5
1
1.5
2
2.5
Distance from right bank, m
Dep
th, m
0.6
0.8
1
1.2
1.4
1.6Streamwise Velocity, m/s
12
3
4
5
06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:000
0.5
1
1.5
2
2.5
Time (Minute : Second)
Stre
amw
ise
velo
city
at 0
.6 d
epth
, (m
/s)
Station 3 at 0.6 depth
ADCP,0.5sADCP,sm4sLISST,4s
051015202530354045
0
0.5
1
1.5
2
2.5
Distance from right bank, m
Dep
th, m
180
185
190
195
200
205
210
215Sediment CorrectedBackscatter (SCB), dB
12
3
4
5
051015202530354045
0
0.5
1
1.5
2
2.5
Distance from right bank, m
Dep
th, m
180
185
190
195
200
205
210
215Sediment CorrectedBackscatter (SCB), dB
12
3
4
5
051015202530354045
0
0.5
1
1.5
2
2.5
Distance from right bank, m
Dep
th, m
180
185
190
195
200
205
210
215Sediment CorrectedBackscatter (SCB), dB
12
3
4
5
