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- Document: 1994 Annual Report: San Francisco Estuary Regional Monitoring Program for Trace Substances (3.66 MB pdf)
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Abstract
One of the central problems in regional monitoring is choosing a station array that accurately reflects the distribution of values for the entire region of interest. For time-consuming or expensive measurements, an additional goal is to make the number of sampling locations and times as small as possible. These problems are probably most difficult in estuaries because of the relatively large variability on many different spatial and temporal scales. This high variability often means that comprehensive historical data are not available for accurately assessing sparser sampling efforts. It also implies that a higher frequency of sampling in space and time is required compared to other water bodies.
In this report, we focus on selection of an “optimum” station configuration for the channel of San Francisco Bay for vertical profiling of water quality. Our analysis is based on the monthly cruises conducted by the USGS under the auspices of the Regional Monitoring Program for Trace Substances (Caffrey et al. 1994; SFEI 1994). The underlying rationale for undertaking the analysis is that the distribution of trace substances is structured, at least in part, by the same forces acting on water quality parameters. This must be true to some extent, as trace substance concentrations are partially dependent on water quality characteristics such as salinity. On the other hand, the quantitative importance of these parameters in accounting for overall variability in individual trace substances is unknown. Furthermore, trace substances have their own unique sources, and these sources may dominate their distribution.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | State or Local Government Series |
| Title | Choosing optimum station configurations for summarizing water quality characteristics, in 1994 Annual Report, San Francisco Estuary Regional Monitoring Program for Trace Substances: San Francisco Estuary Institute |
| Year Published | 1996 |
| Language | English |
| Publisher | San Francisco Estuary Institute and the Aquatic Science Center |
| Publisher location | San Francisco, CA |
| Contributing office(s) | Toxic Substances Hydrology Program |
| Description | 13 p. |
| Larger Work Type | Report |
| Larger Work Subtype | State or Local Government Series |
| Larger Work Title | 1994 Annual Report: San Francisco Estuary Regional Monitoring Program for Trace Substances |
| First page | 185 |
| Last page | 197 |
| Time Range Start | 1994-01-01 |
| Country | United States |
| State | California |
| County | San Francisco |
| City | San Francisco |
| Other Geospatial | San Francisco Bay |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |