海面温度异常与红海地震活动之间的联系跨越多个时间尺度
Ahmed M El Kenawy1,2, Emad K Mohamed3, Mohamed M Abdelaal2
1Instituto Pirenaico de Ecología, Consejo Superior de Investigaciones Científicas (CSIC), Avda. Montañana 1005, Zaragoza, 50059, Spain.
Scientific reports
|May 6, 2025
概括
地震活动影响红海海面温度 (SST). 长期的地震事件与负的SST异常相关,而短期的影响显示地震前的变暖和地震后的降温.
科学领域:
- 地质物理学 地质物理学
- 海洋学 海洋学 海洋学
- 气候科学 气候科学
背景情况:
- 红海经历了显著的地震活动和海面温度 (SST) 的变化.
- 了解地质事件和海洋条件之间的相互作用对于海洋科学和危险评估至关重要.
研究的目的:
- 调查2003年至2020年红海地震活动和SST变异性之间的关系.
- 分析跨不同时间尺度 (每日,年,十年) 和地理区域的相关性.
主要方法:
- 利用了来自埃及国家地震网络 (ENSN) 和ISC-GEM全球仪器地震目录的数据.
- 使用中等分辨率成像光谱辐射仪 (MODIS) 采用水上卫星数据进行SST分析.
- 在多个时间尺度上进行趋势分析和相关性评估.
主要成果:
- 在红海中从北到南观察到明显的SST升温梯度.
- 在年级和十年级尺度上发现地震活动和SST之间存在一致的负相关性.
- 确定了地震事件发生前和发生期间/发生后的SST短期变暖和冷却,与压力和地热变化有关.
结论:
- 地震活动,特别是在较长的时间尺度上,可以诱导局部的负SST异常,可能是由于地的调整.
- 在地震事件之前和之后的短期SST波动表明石静压和地热流的影响.
- 复杂的SST-地震相互作用需要进一步研究,以更好地了解海洋动态和地震预测.
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