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

LIS

ST-S

L C

oncentr

ati

on,

in m

g/l

( d

ensit

y=

2.6

5 g

/cm

3)

0 4 8 12 16 20 24 28 320

1

2

3

4

5

6Puyallup River

0.2 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

Con

cen

trati

on

, 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

1

2

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)

Str

eam

wis

e ve

loci

ty a

t 0.6

dep

th, (

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