Water pressure/depth, velocity, and turbidity time-series data from CHC16 Bay shallows stations in San Pablo Bay and China Camp Marsh, California

Instruments at each station are: Sontek Field and Ocean ADV, with OBS3 optical backscatter sensor and Paroscientific bursting pressure sensor, RBR XR-420 or Concerto CTD (with Seapoint optical backscatter attached at one station), except at station M2T where only a Seabird SBE-37 CTD was deployed. Optical backscatter, which is linearly related to turbidity, is reported as voltage over the range 0-5 V. Turbidity is reported from 0-500 FNU.

Instruments were retrieved, and data were recovered from the instruments. Data were processed and accumulated into NetCDF files. During the lowest tides, some instruments were not submerged; these data remain. Pressure data from the ADVs were not adjusted from absolute pressure to hydrostatic pressure.

Data files were named with a convention that uses a 12- to 13-digit alpha-numeric code; zip files use an abridged eight-digit code. The first three characters for this dataset are for the deployment name (CHC for China Camp measurements including all measurement locations from Bay channel stations to Tidal Creek stations; abridged deployments with measurements taken only at Bay Shallows stations begin with 'SP' followed by A, B, C, or D to denote chronological occurrence). The fourth and fifth positions represent the calendar year in which the first data point in the file was taken (13, 2013; 14, 2014; 15, 2015; 16, 2016). The sixth through eighth positions represent the station identification - see the graphic at https://www.sciencebase.gov/catalog/file/get/58458e82e4b04fc80e5233b3?name=SFBayStationLocations.png (all Bay stations) for location information. Zip files use the informative character codes outlined above for positions 1-8; additional character positions provide instrumentation information for the data files only. The ninth and tenth positions are numbers representing the instrument position on the frame (01, 02 or 03), with 01 as uppermost on the frame. Next is a two- to three-character code for the instrument and data type (adv = Sontek ADV; bpr = RBR bursting pressure sensor; ctd = RBR CTD; obs = optical backscatter; lst = LISST; sct = SeaBird seacat CTD; vec = Nortek ADV; wh = RDI ADCP current data; wv = RDI ADCP wave data). Note that some instruments also include additional external sensors. There are an additional two characters for the instruments that collect data in a bursting pattern to indicate if the burst is included in the file or the statistics of the burst; this indicator is omitted if there is no bursting pattern (-b, burst; -s, statistics). For special one-day LISST and CTD data (CHC16LSS), modified naming schemes were used to specify the station location information in character positions 6-12. The sixth through seventh positions (‘LS’) denote the data as special one-day LISST and CTD data. The eighth through tenth positions indicate the station identity. The remaining positions (11-12) are a numeric file code clarifying elevation of data collection as follows: file 01 was collected at N1T at 155 cm above bed; files 02, 03, and 04 were collected at S1T at 40, 100, and 170 cm above bed, respectively: file 05 is was collected at TDL at 40 cm above bed; file 06 was collected at MFT at 50 cm above bed: files 07 and 08 were collected at S1T (at a later time) at 30 and 170 cm above bed, respectively: and file 09 was collected at MFT (at a later time) at 60 cm above bed.

Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.

Performed minor edits to the metadata to correct typos. No data were changed