EPSONDE is a tethered free-fall profiling system used to obtain temperature microstructure and velocity turbulence data to a depth of at least 1500 m. EPSONDE, which carries a variety of slow and fast sensors, is deployed on a loose kevlar multiconductor cable by a specialized wire-handling system. Data are transmitted from this underwater unit (1792 samples per second) to a shipboard system which includes a dedicated microcomputer for data logging and on-line data processing. The performance of this system will be demonstrated by discussing a study of turbulent mixing processes in a lens of Mediterranean water (a MEDDY) found at a depth of lo00 m in the Canary basin. These studies indicate that turbulent kinetic energy dissipation may be an important mechanism in determining the decay and lifetime of a MEDDY.

Supplementary figure 1. (A) scatter plot of CRAE measured by the IVAN and RMHAS methods; (B) scatter plot of CRVE measured by the IVAN and RMHAS methods. CRAE: central retinal artery equivalent; CRVE: central retinal vein equivalent; IVAN: Integrative Vessel Analysis; RMHAS: Retina-based Microvascular Health Assessment System. Supplementary figure 2. (A) Histogram of CRAE residual distribution; (B) Histogram of CRVE residual distribution. CRAE: central retinal artery equivalent; CRVE: central retinal vein equivalent.

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A three-degree-of-freedom nonlinear dynamic model of piecewise highline system during underway replenishment is investigated when the lumped mass swings in which the influences of piecewise characteristic of highline cable's static profile due to cargo deadweight, the incline angle and the horizontal motion of the sending end are considered. Considering 1:2 internal resonance and primary resonance, ordinary differential equations are gained by decoupling the inertial terms. Perturbation analysis and numerical analysis are carried out by adopting the multiple-scale method, which will be the theoretical basis of the further research of nonlinear dynamics.