Stephen V. Smith and James T. Hollibaugh
Figure 1. Map of Tomales Bay sampling stations.Most sampling was conducted between stations 0 and 18. Surface samples only were collected at stations 0, 16, and 18. Other locations were sampled at both the surface and midwater.
The general water sampling procedures and analytical procedures are described in Smith et al. (1987, 1989, 1991). (see reference in LMER/BRIE publications list). For the analytical measurement methods, see references in Smith et al. (1991). Other technical notes are as follows:
1. Surface (bucket) or midwater (Niskin bottle) samples.
2-5. Julian day of year, year, date, time (Pacific Standard) of sample collection.
6. Station, reported as km from mouth of bay. (Figure 1).
7. Salinity measured with laboratory salinometer; primary standard is Copenhagen water; secondary standard is filtered seawater. Nominal precision ▒ 0.01 psu.
8. Field temperature. Nominal precision is ▒0.1 deg C.
9. pH measured in laboratory against seawater tris buffer. Nominal precision is ▒0.005 pH units. Corrected via algorithm using temperature, salinity, and alkalinity to field pH.
10. Total alkalinity by single-point acid addition, calibrated against filtered seawater alkalinity measured by 6-point titration. Nominal precision is ▒0.005 mmol/liter.
11-12. DIC, pCO2 calculated from constants as summarized by references given in Smith et al. (1991).
13-21. DOC (mmol/liter), nutrients (Ámol/liter) measured on filtered samples, held frozen for less than 2 weeks, by U. Hawaii SOEST Analytical Services Laboratory, following procedures summarized by Smith et al. (1991) and references cited therein.
These data can be accessed by pressinghere.
<FONT=+1 DESCRIPTION OF TOMALES BAY AND THE LMER/BRIE RESEARCH PROGRAM:
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This page was last updated by SVS Monday 13 April 1998. Maintained by Stephen V. Smith at firstname.lastname@example.org