I. Introduction
Turbulent mixing plays an extremely important role in the process of ocean energy and material exchange. It is the source power of ocean thermohaline circulation and one of the core research directions of physical oceans. The observation of turbulence depends on the development of ocean turbulence observation instruments. At present, domestic turbulence instruments are mainly equipped with shear sensors, which are easily affected by instrument vibration and the observation accuracy is limited. Through the study of the formation and evolution mechanism of ocean turbulence, a turbulence observation method using rapid temperature gradient change is proposed [1]. The rapid temperature sensor senses the temperature fluctuation of seawater temperature in micro-scale structure by measuring the heat dissipation rate of seawater, and indirectly measures the turbulent kinetic energy dissipation rate. As we all know, thermistor has the advantages of high sensitivity, fast response, long life and low cost, and has become the best choice for ocean turbulence measurement.