Abstract:

This data set contains quality-controlled hourly water level and 2-D velocity data collected at a single location (29.27869, -89.94669) in Barataria Pass, the major inlet of Barataria Bay, Louisiana, from 2018-02-15 to 2018-04-16. Water level was measured with a pressure sensor positioned 0.4 m above the bottom in 1.9m of water, and velocity was measured with a Nortek Acoustic Doppler Velocimeter (ADV). The raw ADV data from 2018-02-15 through 2018-06-08 are also included but the data from May and June were not quality controlled.

Suggested Citation:

Mariotti, Giulio. 2020. Time series of water level and two-dimensional velocity collected at Barataria Pass, Louisiana, from 2018-02-15 to 2018-04-16. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/n7-adna-px52

Purpose:

These data were collected as part of a multi-instrument deployment designed to better understand water and sediment fluxes in Barataria Bay, Louisiana.

Data Parameters and Units:

Processed data: Date [MM/DD/YYYY], Time [local time, 24-hour format], Water Level [m], Uy [northward velocity, m/s], Ux [eastward velocity, m/s] Raw ADV Data: BPFS1804.hdr contains the initialization settings for the instruments and a description of all the remaining files, including format and unit BPFS1804.dat contains the actual data, including burst number, ensemble number, velocity on beams 1-2 (m/s), amplitude for beams 1-3 [counts], signal to noise for beams 1-3 [dB], correlation for beams 1-3 [%], pressure [dbar], analog input 1, analog input 2, and a checksum value [1=fail] BPFS1804.pck contains sample number, distance [mm], amplitude for beams 1-3 [counts] BPFS1804.sen contains date, time [local], and sensor information for each burst: month, day, year, hour, minute, second, error code, status code, battery voltage [V], speed of sound [m/s], heading [degrees], pitch [degrees], roll [degrees], temperature [degrees C], analog input, checksum [1=fail] BPFS1804.ssl - a log of events, such as first and final measurements and any out-of-range compass measurements BPFS1804.VEC - binary data BPFS1804.vhd - contains beam information. Month, day, year, hour, minute, second, burst counter, number of velocity samples, noise amplitude for beams 1-3 [counts], noise correlation for beams 1-3 [%], initial distance from for beams 1-3 [counts], average initial distance from probe [mm], average initial distance from sample volume [mm], final distance from problem for beams 1-3 [counts], final average distance from probe [mm], final average distance from sample volume [mm].

Methods:

The ADV was operated in burst mode, reporting 1024 measurements per burst, collected at 4 Hz, at 3600 second intervals. Data were collected in the XYZ beam coordinate system.

Instruments:

Nortek 6 MHz Vector Acoustic Doppler Velocimeter (ADV). Piezoresistive pressure sensor, range 0-10m, 0.5% accuracy.

Individual Files: