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摩卡气旋风暴对地球生态,海岸线动态和洪水的影响:地理空间分析
Manoranjan Mishra1, Rajkumar Guria1, Suman Paul1
1Department of Geography, Fakir Mohan University, Vyasa Vihar, Nuapadhi, Balasore 756089, Odisha, India.
The Science of the total environment
|January 26, 2024
概括
摩卡风严重影响了缅甸和孟加拉国的沿海生态系统,造成了广泛的植被破坏,海岸线侵蚀和洪水增加. 该研究强调了生态恢复和增强沿海恢复力的关键数据.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 灾害管理 灾害管理
背景情况:
- 摩卡风对缅甸和孟加拉国的沿海地区造成了重大破坏.
- 了解生态和物理影响对于有效应对灾害和恢复至关重要.
- 沿海生态系统特别容易受到极端天气事件的影响.
研究的目的:
- 综合评估摩卡风暴对沿海地区的气旋后影响.
- 评估沿海生态,海岸线动态,洪水和气象条件的变化.
- 为康复,保护和弹性建设战略提供数据.
主要方法:
- 使用多种植被指数 (NDVI,EVI,mVCI,DVDI,FVC) 来评估生态损害.
- 使用数字海岸线评估系统 (DSAS) 进行海岸线变化分析.
- 应用裸土指数 (BSI) 和修改的规范差水指数 (MNDWI) 用于土壤暴露和洪水映射.
- 分析了风前后的气象数据.
主要成果:
- 超过8985平方公里的密集植被受到不利影响,EVI和FVC减少,mVCI转移为负.
- 观察到显著的海岸线侵蚀 (74.60%) 和增加的洪水.
- 气象数据显示降雨量增加了245%,相对湿度增加了14%,风速增加了205%.
结论:
- 摩卡风对若开邦和奇塔贡分区的沿海地区造成严重的生态和物理破坏.
- 调查结果强调,迫切需要有针对性的恢复和保护工作.
- 生成的数据对于增强沿海性和保护社区生计至关重要.
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