长期的海面变化与海底地形有关
Magdalena Idzikowska1, Katarzyna Pajak1, Kamil Kowalczyk1
1Department of Geoinformation and Cartography, Institute of Geodesy and Civil Engineering, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 2, 10-719 Olsztyn, Poland.
Sensors (Basel, Switzerland)
|October 29, 2025
概括
与较简单的沟和峡谷相比,区域海平面变化在复杂的海底结构 (如海底山和波纹) 上显著更高,更不规则. 这突出了海底地形如何影响海平面在29年的变化.
科学领域:
- 海洋学 海洋学 海洋学
- 地质物理学 地质物理学
- 遥感 遥感 遥感 遥感
背景情况:
- 区域海平面的变化受到海洋动态和海底地形之间的复杂相互作用的影响.
- 了解这些影响对于准确的海平面变化预测和海岸管理至关重要.
研究的目的:
- 分析不同海底结构的区域海平面变化,特别是海洋沟/峡谷和海底山/波纹.
- 为了比较29年来这些不同的地形学区域的海平面变化趋势.
- 为了研究海底地形和海面变化之间的关系.
主要方法:
- 利用混合数据集,包括卫星高度测量时间序列和多束浴度测量.
- 整合了GEBCO产品,自由空气重力异常模型和平均动态海洋地形模型.
- 采用雷达遥感和太空雷达技术,捕捉相对于海底地形的海面动态.
主要成果:
- 区域海平面变化趋势在海底山/波纹地区 (2.567.66毫米/年) 与沟/峡谷地区 (1.753.65毫米/年) 相比显著更高.
- 沟/峡谷地区的海平面趋势稳定和规律,而海底山/波浪地区的海平面趋势呈现出更高和不规则的趋势.
- 发现区域海平面的波动与海底结构的复杂性和多样性相关.
结论:
- 海底地形是区域海平面波动的重要驱动因素.
- 复杂的水度,例如在海底山脉和波纹地区发现的水度,导致海平面变化更大.
- 尽管容易受到气候现象的影响,但沟沟和峡谷地区的海平面变化幅度比更复杂的地区少.
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