An assessment of optical properties of dissolved organic material as quantitative source indicators in the Santa Ana River basin, Southern California

2005 ◽  
Author(s):  
Brian A. Bergamaschi ◽  
Erica Kalve ◽  
Larry Guenther ◽  
Gregory O. Mendez ◽  
Kenneth Belitz
Keyword(s):  
Optical Properties ◽  
River Basin ◽  
Organic Material ◽  
Southern California ◽  
Santa Ana ◽  
Santa Ana River

Biomonitoring Recycled Water in the Santa Ana River Basin in Southern California

2008 ◽  
Vol 71 (2) ◽  
pp. 109-118 ◽  
Author(s):  
Xin Deng ◽  
Michael Carney ◽  
David E. Hinton ◽  
Stephen Lyon ◽  
Greg Woodside ◽  
...  
Keyword(s):  
River Basin ◽  
Southern California ◽  
Recycled Water ◽  
Santa Ana ◽  
Santa Ana River

scholarly journals Carbon Isotope Measurements of Surface Seawater from a Time-Series Site Off Southern California

Radiocarbon ◽  
2010 ◽  
Vol 52 (1) ◽  
pp. 69-89 ◽  
Author(s):  
Elise N Hinger ◽  
Guaciara M Santos ◽  
Ellen R M Druffel ◽  
Sheila Griffin
Keyword(s):  
Time Series ◽  
Carbon Isotope ◽  
Southern California ◽  
Dissolved Inorganic Carbon ◽  
Open Water ◽  
Surface Seawater ◽  
Wet Season ◽  
Santa Ana ◽  
Santa Ana River ◽  
First Time

We report carbon isotope abundances of dissolved inorganic carbon (DIC) in surface seawater collected from a time-series site off the Newport Beach Pier in Orange County, California. These data represent the first time series of Δ14C data for a coastal southern California site. From a suite of samples collected daily from 16 October to 11 November 2004, Δ14C values averaged 32.1 ± 4.4‰. Freshwater input from the Santa Ana River to our site caused Δ14C and δ13C values to decrease. Since this initial set of measurements, a time-series site has been maintained from November 2004 to the present. Surface seawater has been collected bimonthly and analyzed for Δ14C, δ13C, salinity, and ΣCO2 concentrations. Water samples from the Santa Ana River were collected during the wet season. California sea mussels and barnacle shells, ranging from 4 to 6 months old, were also collected and analyzed. Results from May 2005 to January 2008 show no long-term changes in δ13C DIC values. Δ14C DIC values over the 2005–2006 period averaged 33.7‰; high Δ14C values were observed sporadically (every 6–7 months), suggesting the presence of open water eddies at our site. Finally, in 2007, a stronger upwelling signal was apparent as indicated by correlations between Δ14C, salinity, and the Bakun index, suggesting that the Δ14C record is an indicator of upwelling in the Southern California Bight.

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