Cast 011

Station

generated 2026-09-08 14:37 UTC

Pages: Summary Casts Sections Timeseries Interactive
Cruise
odb26
Ship
Odon de Buen
Latitude
65° 51.62′ N
Longitude
029° 25.98′ W
Start
2026-07-12 02:40 UTC
End
2026-07-12 03:00 UTC
Duration
0h 20m
Max depth
318 dbar
Source
mixsed2_011_stage3.nc
Processed
2026-09-08 14:36 UTC
ctdcast
(1) Overview (2) Hydrography (3) Biogeochemistry (4) T–S diagram (5) Stability (6) Velocity (bottom track) (7) Diagnostics (8) QC flags (A) Sensors (B) File provenance (C) netCDF data ranges (D) Processing provenance

(1) Overview

CT · SA · σ₀ profiles, station location, and T–S down-vs-up.

ts_density
station_map
ts_updown

(2) Hydrography

CT · SA · σ₀ vs pressure — downcast in colour, upcast in grey.

ct_sa_sigma0

(3) Biogeochemistry

O₂ saturation · fluorescence · turbidity.

aux

(4) T–S diagram

Coloured by O₂ saturation — downcast only.

Contours: σ₀ (kg m⁻³) — potential density referenced to surface
Contours: σ₀ (kg m⁻³) — potential density referenced to surface

(5) Stability

N² and Turner angle — downcast only.

stability

(6) Velocity (bottom track)

ladcp_bottomtrack

(7) Diagnostics

Cast trajectory: pressure vs elapsed time
Cast trajectory: pressure vs elapsed time
T₁−T₂, S₁−S₂: primary minus secondary sensor. Ideal: scatter around zero with ±0.01 spread.
T₁−T₂, S₁−S₂: primary minus secondary sensor. Ideal: scatter around zero with ±0.01 spread.
ΔCT, ΔSA, Δσ₀ downcast minus upcast on 1-dbar grid — measures hysteresis from pump lag or sensor response time
ΔCT, ΔSA, Δσ₀ downcast minus upcast on 1-dbar grid — measures hysteresis from pump lag or sensor response time

(8) QC flags

QARTOD flags recorded by the pipeline, read back from the cast file: gross-range thresholds applied and the flag-count breakdown per variable.

Data-value distributions: grey = all data, colour = kept (soak/deck and missing excluded); orange dashed = gross-range suspect threshold. A threshold outside the data flags a mis-set bound.
Data-value distributions: grey = all data, colour = kept (soak/deck and missing excluded); orange dashed = gross-range suspect threshold. A threshold outside the data flags a mis-set bound.

Thresholds applied (as stored in stage 3 file)

VariableTestSuspect range / thresholdFail range / threshold
conductivity_*gross-range[0.0, 65.0][0.0, 75.0]
conductivity_*spike|Δ| > 2.0|Δ| > 5.0
ctd_fluorgross-range–[0.0, 50.0]
ctd_oxygengross-range–[0.0, 450.0]
ctd_oxygenspike|Δ| > 20.0–
ctd_salinity_*gross-range[2.0, 40.0][0.0, 40.0]
ctd_salinity_*spike|Δ| > 1.0|Δ| > 2.0
ctd_temperature_*gross-range[-2.0, 35.0][-2.5, 40.0]
ctd_temperature_*spike|Δ| > 2.0|Δ| > 6.0
ctd_turbiditygross-range–[0.0, 50.0]
pressuregross-range[-0.5, 7000.0][-5.0, 7000.0]
pressurespike|Δ| > 10.0|Δ| > 50.0

Flag counts

pass (1) suspect (3) fail (4) missing (9)
VariableNpass %suspect %fail %missing %Distribution
conductivity_162599.0–1.0–
conductivity_262599.0–1.0–
ctd_altimeter62599.0–1.0–
ctd_fluor62599.0–1.0–
ctd_oxygen62599.0–1.0–
ctd_salinity_162599.0–1.0–
ctd_salinity_262599.0–1.0–
ctd_temperature_162599.0–1.0–
ctd_temperature_262599.0–1.0–
ctd_turbidity62599.0–1.0–
pressure625100.0–––
sbe_density62599.0–1.0–
sbe_depth62599.0–1.0–
sbe_flag62599.0–1.0–
sbe_oxygen_saturation_162599.0–1.0–
sbe_oxygen_saturation_262599.0–1.0–
sbe_speed_of_sound62599.0–1.0–
sbe_timeJ62599.0–1.0–
sbe_timeS62599.0–1.0–

Flag 4 (fail) combines two independent exclusions: this variable’s own gross-range and spike tests, and the whole-cast soak / on-deck trim, which flags the same pre-descent and post-recovery scans on every variable. A variable can therefore show flagged samples that its own thresholds did not raise.

(A) Sensors

VariableRoleChDeviceModelCal dateSlopeOffset
ctd_temperature_1temperature_11SN 6435SBE 3plus2026-Feb-171.000000000.0000
conductivity_1conductivity_12SN 4922SBE 4C2026-Feb-171.000004520.00000
pressurepressure3SN 0814Digiquartz2023-Feb-171.000040960.27440
ctd_temperature_2temperature_24SN 6000SBE 3plus2023-Apr-141.000000000.0000
conductivity_2conductivity_25SN 3120SBE 4C2023-May-230.999936820.00000
—user_polynomial6SN UVP6UNK090726
ctd_oxygenoxygen_18SN 0707SBE 432025-Dec-10
—ph9SN 339SBE 182024-Feb-13
—transmissometer10SN 2033WET Labs C-Star2020-Apr-14
ctd_turbidityturbidity12SN 3508WET Labs ECO NTU2016-Apr-12
ctd_fluorfluorometer13SN FLNTURTD-3508WET Labs ECO FL2016-Apr-12

(B) File provenance

File identity read back from the cast file: cast, OceanSITES data mode, processing stage, and the tracking_id lineage to the source CNV.

Cast011
Data modeP (provisional)
Processing stage1
Source CNVmixsed2_011.cnv
Tracking idd1394fae-eeab-4e83-83ef-3070148d314c
Created2026-09-08T06:59:47.631010Z
Modified2026-09-08T06:59:47Z

(C) netCDF data ranges

Min · max · valid count for every variable in the cast file on disk.

VariableUnitsLabel unitsMinMaxValidProcessing level
latitudedegrees_north°N-9.99e-2965.86625
longitudedegrees_east°E-29.43-9.99e-29625
time——625
conductivity_1mS cm-1mS/cm33.1536.45625Instrument data that has been converted to geophysical values; Ranges applied, bad data flagged
conductivity_1_qc14625
conductivity_2mS cm-1mS/cm33.1536.46625Instrument data that has been converted to geophysical values; Ranges applied, bad data flagged
conductivity_2_qc14625
ctd_altimetermm9.24102.5625Ranges applied, bad data flagged
ctd_altimeter_qc14625
ctd_fluormg m-3mg/m³2.9263.366625Instrument data that has been converted to geophysical values; Ranges applied, bad data flagged
ctd_fluor_qc14625
ctd_oxygenumol kg-1µmol/kg245304625Instrument data that has been converted to geophysical values; Ranges applied, bad data flagged
ctd_oxygen_qc14625
ctd_salinity_11PSU34.0235.17625Ranges applied, bad data flagged
ctd_salinity_1_qc14625
ctd_salinity_21PSU34.0535.17625Ranges applied, bad data flagged
ctd_salinity_2_qc14625
ctd_temperature_1degree_Celsius°C4.528.102625Instrument data that has been converted to geophysical values; Ranges applied, bad data flagged
ctd_temperature_1_qc14625
ctd_temperature_2degree_Celsius°C4.528.108625Instrument data that has been converted to geophysical values; Ranges applied, bad data flagged
ctd_temperature_2_qc14625
ctd_turbidity1NTU0.00720.564625Instrument data that has been converted to geophysical values; Ranges applied, bad data flagged
ctd_turbidity_qc14625
pressuredbardbar5318625Instrument data that has been converted to geophysical values; Ranges applied, bad data flagged
pressure_qc11625
sbe_densitykg m-310271029625Ranges applied, bad data flagged
sbe_density_qc14625
sbe_depthm-314.6-4.951625Ranges applied, bad data flagged
sbe_depth_qc14625
sbe_flag100625Ranges applied, bad data flagged
sbe_flag_qc14625
sbe_oxygen_saturation_1percent80.55101.2625Ranges applied, bad data flagged
sbe_oxygen_saturation_1_qc14625
sbe_oxygen_saturation_2percent-9.99e-292.324625Ranges applied, bad data flagged
sbe_oxygen_saturation_2_qc14625
sbe_speed_of_soundm s-114731484625Ranges applied, bad data flagged
sbe_speed_of_sound_qc14625
sbe_timeJday193.1193.1625Ranges applied, bad data flagged
sbe_timeJ_qc14625
sbe_timeSs-3.9591230625Ranges applied, bad data flagged
sbe_timeS_qc14625

(D) Processing provenance

What the SBE deck unit and Sea-Bird Data Processing did to this cast before ctdcast read it, recovered from the raw header.

Corrections applied before ctdcast

StepProducerVersionParametersVariablesMatches reference
alignSBE 11plus deck unitV 5.2advance primary conductivity 0.073 sconductivity_1✓
alignSBE 11plus deck unitV 5.2advance secondary conductivity 0.073 sconductivity_2✓
datcnvSBE Data Processing7.26.7.129skipover=0 ox_hysteresis_correction=yes ox_tau_correction=yesall channels: raw→physical–
wildeditSBE Data Processing7.26.7.129pass1_nstd=2.0 pass2_nstd=20.0 npoint=100
channelspressure, ctd_temperature_1, conductivity_1, ctd_temperature_2, conductivity_2, ctd_altimeter, ctd_fluor, ctd_turbidity, longitude, latitude, sbe_oxygen_saturation_1, ctd_oxygen, sbe_oxygen_saturation_2
–
wfilterSBE Data Processing7.26.7.129excl_bad_scans=yes median, 10
channelspressure, ctd_temperature_1, conductivity_1, ctd_temperature_2, conductivity_2, ctd_fluor, ctd_turbidity, sbe_oxygen_saturation_2
–
filterSBE Data Processing7.26.7.129filtered at 0.030 s
channelsctd_altimeter, ctd_fluor, ctd_turbidity, longitude, latitude, sbe_oxygen_saturation_1, ctd_oxygen, sbe_oxygen_saturation_2
–
filterSBE Data Processing7.26.7.129filtered at 0.150 spressure✓
celltmSBE Data Processing7.26.7.129alpha=0.0300 tau=7.0000conductivity_1✓
celltmSBE Data Processing7.26.7.129alpha=0.0300 tau=7.0000conductivity_2✓
DeriveSBE Data Processing7.26.7.1292 variables derived–
binavgSBE Data Processing7.26.7.129bintype=decibars binsize=1all channels: binned–

Reference values: align 0.073 s — SBE manual p.85; filter pressure 0.15 s — SBE manual p.100 (= 4 / scan-rate); celltm (α,τ)=(0.03,7) — SBE manual p.92 (TC duct, 3000-rpm pump).

Time coordinate

PropertyValue
Time coordinate sourceNMEA time, header
Clock offset (NMEA − system)-3.0 s

Advisories

Conformance

Per-sensor calibration state (drift Slope/Offset) and the device inventory are in the Sensors appendix.

Recovered from the raw Sea-Bird header on the cast file; the full verbatim blocks are kept in the sbe_acquisition and sbe_processing attributes.