Sandgate - 2019

This resource collects time series water physicochemical In-situ parameter readings, water (current) flow velocity and direction, Nitrogen and Carbon compounds and weather conditions every ten minutes.

Equipment is housed in a large yellow floating Buoy, anchored in position off Sandgate Beach, Bramble Bay, Brisbane, in approximately 4 meters of water, Lat: -27.302856 S Long: 153.105376 E Datum GDA 94 .

Water Quality is measured by a YSI EXO2 mulitparameter sonde at 0.4m below the surface, which collects : Timestamp, Record, EXO_TempC, EXO_SpCondmScm, EXO_Salpsu, EXO_pHmV, EXO_pH, EXO_Depthm, EXO_BatV, EXO_ChlugL, EXO_ChlRFU, EXO_DOPerSat, EXO_DOmgL, EXO_BGAPERFU, EXO_BGAPEugL, EXO_TurbFNU, EXO_fDOMRFU, EXO_fDOMQSU and EXO_TurbNTU data.

Water flow direction and velocity are also collected at a depth of 1.0 meter below the surface via an Aanderra Doppler Current Sensors (DCS) Model 420 which operates on the backscatter acoustic doppler principle.

The sensor has built-in compass and tilt sensor.

Doppler Parameters measured/collected are: Timestamp, Record, DCS_Model, DCS_ Serial, DCS_ABSSpeed_Avg (UNIT cm/S), DCS_Direction_Avg, DCS_NorthCur_Avg, DCS_Heading_AVG, DCS_TiltX_Avg, DCS_TiltY_Avg, DCS_SPstd_Avg, DCS_SigStrenght_Avg, DCS_PingCnt_Avg, DCS_AbsTilt_Avg, DCS_MaxTilt_Avg, DCS_StdTilt_Avg. A Trios ""Opus"" spectrophotometer with 10 mm optical path, submerged at 1 meter below the surface, measures Nitrogen and Carbon compounds, such as: Nitrate NO3-N, Nitrite NO2-N, CODeq, BODeq, DOCeq, TOCeq, TSSeq, KHP, SAC254, COD-SACeq, BOD-SACeq. Mounted on the vertical spar on the outside of the buoy, the Gill Maximet Compact Weather Station GMX100 measures Ambient Air conditions such as; Gill_Ws_Mean, Gill_Wd_MeanUnitVector, Gill_Wd_StdDev, Gill_WindSpd_Max, Gill_Temperature_Avg, Gill_RH, Gill_Pressure, Gill_Rain_mm_Tot, Gill_TotalRain_mm, Gill_DewPoint_Avg, Gill_SRad_Avg, Gill_SunHours_Avg, Gill_Latitude, Gill_Longitude, Gill_Time, Gill_Status, Gill_Status1, Gill_Status2, Gill_Status3, Gill_Status4, Gill_Status5, Gill_Status6.

See YSI website for instrument accuracy, method of operation etc. For more information visit:

• YSI EXO2 Water Quality
• Aanderra Doppler
• Trios Opus Nitrate Analyser
• Gill MaxiMet GMX100 Weather Station