Page 31 - Performance Verification Statement for the Chelsea UV Aquatracka Fluorometer

Ref. No. [UMCES]CBL 2013-014
ACT VS12-01
Photo 10. Vertical Profiling Rosette and visible surface oil slick above location of submerged, leadking
barge.
A general summary of the water quality conditions at the two sites are shown in Table 4.
Site 1 in Terrebonne Bay had an average salinity of 29.9, with a high level of chlorophyll,
turbidity and CDOM. Site 2 was more typical of open-ocean, with an average salinity of 36.2
and mean chlorophyll levels less than 1 µg/L. CDOM and turbidity levels varied significantly at
this site, in particular, showing increased levels at depth in regions where oil was present.
Table 4. Comparison of ancillary physical and water quality conditions for hydrocarbon sensor
verification tests conducted at two vertical profiling field sites in the Gulf of Mexico.
Site Temperature
(oC)
Salinity Chlorophyll
(µg/L)
CDOM Turbidity
(NTU)
Site 1
Terrebonne
Bay
Min 25.3 28.9 -- -- --
Max 25.9 31.1 -- -- --
Mean 25.6 29.9 9.7 0.72 3.4
Site 2
Leaking Barge
Min 27.1 36.1 0.3 0.09 0.7
Max 28.4 36.3 2.0 0.72 15.4
Mean 27.3 36.2 0.8 0.22 3.4
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