Post on 19-Jan-2016
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Recent advances in technology have allowed us to survey physical, biological and chemical properties of estuary systems such as Great Bay with very high spatial resolution. The UNH Coastal Ocean Observing Center’s CCTI project has conducted multiple surveys, during a wide range of climate and flow conditions.
Chris Hunt, Joe Salisbury, Doug Vandemark, Ru Morrison, Janet Campbell
University of New Hampshire chunt@cisunix.unh.edu
Figure 2. R/V Camden Belle
Figure 4. Flow-through system equipped to measure Fl-Chl, Fl-CDOM, beam attenuation, DO, Temp, and Salinity. Seawater is pumped through the system from below the boat at a rate of 20L/min.
Get these plots, reports, and lots of other information at:
Coastal Carbon Terrestrial Influence Project
www.ccg.unh.edu
Figure 3. Fast equilibrator for continuous pCO2 measurements.
Physical Observations
Chemical Observations
After a drought:Oct 4-6, 2005
After spring runoff:April 7 & 10, 2006
After a historic flood:June 5-6, 2006
Biological Observations
-70.95° -70.9° -70.85° -70.8°
43.05°
43.1°
43.15°
43.2°
June 2006
Key (Cells/mL)
200.0
20.0
2.0
Dinoflagellates
-70.95° -70.9° -70.85° -70.8°
43.05°
43.1°
43.15°
43.2°
200.0
20.0
2.0
DinoflagellatesApril 2006
Key (Cells/mL)
-70.95° -70.9° -70.85° -70.8°
43.05°
43.1°
43.15°
43.2°
6000
600
60
Dinoflagellates
Key (Cells/mL)
-70.95° -70.9° -70.85° -70.8°
43.05°
43.1°
43.15°
43.2°
14.0
1.2
0.0
0.1
0.1
14.8
38.4
3.2
38.9
0.80.6
92.7
2.4
69.2
Acartia longiremisDensity (#/m ^3)
-70.95° -70.9° -70.85° -70.8°
43.05°
43.1°
43.15°
43.2°
11.5
4.1
9.8
8.1
0.0
Acartia hudsonicaD ensity (#/m ^3)10 April 2006
-70.95° -70.9° -70.85° -70.8°
43.05°
43.1°
43.15°
43.2°
0 . 0
2 3 4 6 . 2
1 9 . 1
1 7 . 4
4 7 2 0 . 0
7 1 6 2 . 1
1 9 2 0 . 0
7 7 8 5 . 0
Acartia tonsa
D ensity (# /m ^3)5-6 June 2006
Salinity(psu)
Temp(C)
F-CDOM(ppb)
Oct 2005 April 2006 July 2006
Oct 2005 April 2006 July 2006
pCO2(uatm)
Observations of physical properties include continuous salinity, temperature,beam attenuation. Discrete measurements of total suspended solids and particulateabsorbance were also taken, along with profiles.
We sample chemical properties including continuous oxygen and chromophoric dissolved organic matter fluorescence (f-CDOM). In addition, we made discrete measurements of nutrients, dissolved organic carbon, dissolved inorganic carbon, alkalinity, and particulate organic carbon.
Results•The Great Bay Rivers do not all act the same; for instance, see the pCO2 and O2 dynamics in the Cocheco River compared to the Oyster River•Phytoplankton and zooplankton community structure varies spatially, despite the strong tidal mixing of this system•Storm events, such as the recent floods, strongly affect the carbonate and biological dynamics of this system, and could be important in budgets and models
O2 sat(%)
Support for this work was provided by the NOAA Coastal ServicesCenter through an award to the UNH Center for Coastal OceanObservation and Analysis (COOA), NOAA Award NA16OC2740.