internal wave吸引子的非线性命运
Non-linear fate of internal wave attractors
摘要：
本文对均匀分层流体填充的梯形流体区域内波吸引子的不稳定性进行了实验研究。能量通过竖直壁的驻波型运动注入系统。吸引子被发现被破坏的参数亚谐不稳定性（PSI）通过三元共振，这是示出提供一个非常有效的能量路径从长到短的长度尺度。这项研究提供了一个解释，为什么吸引子可能很难或不可能在自然系统中观察到大振幅强迫。
英文摘要：
We present a laboratory study on the instability of internal wave attractors in a trapezoidal fluid domain filled with uniformly stratified fluid. Energy is injected into the system via standing-wave-type motion of a vertical wall. Attractors are found to be destroyed by parametric subharmonic instability (PSI) via a triadic resonance which is shown to provide a very efficient energy pathway from long to short length scales. This study provides an explanation why attractors may be difficult or impossible to observe in natural systems subject to large amplitude forcing.
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