The mean circulation pattern and its mechanism over Caiwei Guyot (1,308–5,600 m) in the Northwest Pacific were studied utilizing 3 years of in situ data. A deep anticyclonic cap was found to enclose the entire guyot from its bottom up to a depth of 728 m, which is composed of a stable but highly asymmetric anticyclonic circulation at the foot and a bottom‐trapped anticyclonic circulation over the summit. On the slope, the circulation is complex with a dominant anticyclonic circulation near the bottom and a weak cyclonic circulation at ∼2,200 m. The anticyclonic cap intensity over the summit is significantly modulated by the time‐varying impinging flow. An intensified cold ring above the summit edge was observed at Caiwei Guyot, which differs from the cold domes observed over traditional conic seamounts. Further analysis suggests that the impinging flow is primarily responsible for the cap formation, and the M₂ tide‐seamount interaction plays a secondary role. The anticyclonic cap may play a role in the local geological distribution.

中文翻译：

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观察到蔡威古耶特上方有深层反气旋盖

利用3年的原位资料研究了西北太平洋彩微古约（1,308-5,600 m）的平均环流模式及其机理。一个深的反气旋盖被发现，从底部到整个深度包围728 m，由脚部稳定但高度不对称的反气旋环流和山顶上方的底部反气旋环流组成。在斜坡上，环流是复杂的，在底部附近有主要的反气旋环流，在〜2200 m处有弱的气旋环流。随时间变化的撞击流极大地调节了峰顶的反气旋强度。在Caiwei Guyot观测到山顶边缘上方的冷圈增强，这与传统圆锥海山上观测到的冷圆顶不同。₂潮-海山相互作用起次要作用。抗气旋盖可能在局部地质分布中起作用。