Cast 128 — odb26 CTD

Overview Hydrography Biogeochemistry T–S diagram Stability Diagnostics Velocity ▼

Overview

CT/SA/σ₀ + LADCP U/V profiles; station location; T–S down vs up

CT/SA/σ₀ + LADCP U/V profiles

Station map

T–S down vs up

Hydrography

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

CT · SA · σ₀ profiles

Biogeochemistry

O₂ saturation · fluorescence · turbidity

Auxiliary profiles

T–S diagram

Coloured by O₂ saturation — downcast only

T-S diagram — Contours: σ₀ (kg m⁻³) — potential density referenced to surface

Stability

N² and Turner angle — downcast only

Stability

Diagnostics

Pressure vs time — Cast trajectory: pressure vs elapsed time

Sensor 1 − Sensor 2 — T₁−T₂, S₁−S₂: primary minus secondary sensor. Ideal: scatter around zero with ±0.01 spread.

Down − up cast differences — ΔCT, ΔSA, Δσ₀ downcast minus upcast on 1-dbar grid — measures hysteresis from pump lag or sensor response time

Velocity (bottom track)

LADCP bottom track

Sensors

9 sensor(s)

Sensor	S/N	Cal date
Temperature	6435	2026-Feb-17
Conductivity	4922	2026-Feb-17
Pressure	0814	2023-Feb-17
Temperature	6000	2023-Apr-14
Conductivity	3120	2023-May-23
Aux	UVP6	090726
Oxygen (SBE43)	0707	2025-Dec-10
pH	339	13/02/24
Fluorometer	FLNTURTD-3508	2016-Apr-12