海洋潮引发了冰架裂的生长和分娩
O J Marsh1, R J Arthern2, J De Rydt3
1British Antarctic Survey, Cambridge, UK. olrs@bas.ac.uk.
Nature communications
|July 24, 2025
概括
在南极冰架动态中的一个关键过程 - - 图表式冰山脱落 - - 使用裂观测进行了研究. 发现海洋潮和风速直接影响了分娩事件的时间.
科学领域:
- 冰川学的冰川学
- 海洋学 海洋学 海洋学
- 南极研究南极研究
背景情况:
- 图表式冰山分娩显著影响冰架的范围,影响海洋循环和冰盖的稳定性.
- 了解导致分娩的过程对于预测未来的冰损失和海平面上升至关重要.
研究的目的:
- 介绍从2017年到2023年在东南极洲的布伦特冰架上发生的裂的详细观测.
- 分析控制裂传播的因素和冰山分娩的时间.
主要方法:
- 从2017-2023年在布朗特冰架上进行详细的裂观测.
- 应用一种粘弹性类风学模型来估计应力和断裂值.
- 分析环境因素,包括海洋潮高度,风速和冰山碰撞事件.
主要成果:
- 裂传播受到海洋潮高度变化速度,风速和2021年8月冰山碰撞的影响.
- 一个粘弹性风湿学模型表明,2019年初超过了关键骨折值.
- 2023年1月22日的最后一个分娩事件发生在春季潮峰值期间.
结论:
- 海洋潮直接影响了布伦特冰架分娩事件的时间.
- 冰架的分娩是一个复杂的过程,受到短期环境因素和长期冰动态的影响.
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