Marine life has been detected in the ocean's trenches at great depths, down to nearly 11 km. Such life is subject to particular environmental conditions of large static pressure exceeding 1000 atm. While current flows are expected to be slow, waters cannot be stagnant with a limited exchange of fresh nutrients needed to support life. For sufficient nutrient supply, the physical process of turbulent exchange is required. However, environmental conditions hamper research in such waters. To study potential turbulent water motions, a string equipped with specially designed high-resolution temperature sensors was moored near the deepest point on Earth, in the Challenger Deep, Mariana Trench for nearly three years. A preliminary analysis of a six-day period when the mooring was still, demonstrates hundreds of meters slanted convection due to internal waves breaking from above. The associated turbulence dissipation rate with peak values hundred times above the background value is considered sufficient to maintain deep-trench life. Turbulence was associated with one-ten thousandth of a degree temperature anomalies of about one hour duration.

在深达11公里的海沟中发现了海洋生物。这样的寿命受特定的环境条件的影响，即大静态压力超过1000 atm。预计电流将缓慢，但维持生命所需的新鲜营养物质交换有限，水不会停滞。为了提供足够的营养，需要进行湍流交换的物理过程。然而，环境条件阻碍了在这种水域中的研究。为了研究潜在的湍流水运动，将装有特殊设计的高分辨率温度传感器的管柱停泊在地球上最深的位置附近，位于玛丽安娜海沟的挑战者深处，历时近三年。对停泊期仍为六天的初步分析，演示了由于内部波浪从上方破裂而导致的数百米倾斜对流。峰值比背景值高一百倍的相关湍流耗散率被认为足以维持深沟寿命。湍流与大约一小时持续时间的十分之一度的温度异常有关。