Triangle — Triangle repeat station (fixture casts 128-129)

(1) Map

Location of the repeat CTD casts in this group.

(2) Hydrography

Time series of conservative temperature (CT), absolute salinity (SA) and potential density (σ₀) against cast time. The σ₀ panel carries the 27.7 and 27.8 kg m⁻³ isopycnals (black, labelled). Triangles along the top mark each profile — downward for downcasts, upward for upcasts — with station numbers labelled at intervals above the downcasts.

(3) Biogeochemistry

Time series of the biogeochemical sensors present in this group — oxygen, fluorescence and turbidity where available — against cast time.

(4) Velocity (U east, V north)

Eastward (U) and northward (V) velocity from the LADCP, against hours since the first cast.

(5) T–S diagram

Water-mass structure over the occupation in temperature–salinity space, profiles coloured by time.