基于GIS的空间分析,用于孟加拉国的闪电场景
Ferdous Ahmed1, Sakib Hasan2, I M Mahbubul3
1Department of Environmental Science, International University of Business Agriculture and Technology, 4 Embankment Drive Road, Sector-10, Uttara, Dhaka, Bangladesh.
Heliyon
|April 8, 2024
概括
孟加拉国闪电袭击日益增加,造成许多人死亡,特别是农民和渔民. 这项研究绘制了高风险地区和季节的地图,以帮助预防工作.
科学领域:
- 大气科学 大气科学
- 灾害管理 灾害管理
- 地理信息系统 (GIS) 是一个地理信息系统.
背景情况:
- 孟加拉国因闪电频率上升而面临严重危机,特别是在季风前和季风季节.
- 雷击伤亡在2016年被正式宣布为自然灾害,突出了研究的迫切需要.
- 之前的研究缺乏全面的空间和时间分析与闪电有关的死亡事故.
研究的目的:
- 分析孟加拉国闪电死亡和伤亡的空间和时间模式.
- 确定易受雷击袭击的弱势群体和地理热点.
- 为开发有效的预防和缓解策略提供数据驱动的见解.
主要方法:
- 来自孟加拉国气象局 (BMD) 和美国宇航局的闪电成像传感器 (LIS) 卫星数据的整合.
- 地理信息系统 (GIS) 用于空间分析和绘图的应用.
- 使用反向距离加权 (IDW) 插值来绘制闪电死亡率,雷暴日 (TSD) 和闪电频率 (LFF) 的地图.
主要成果:
- 东北地区,特别是西尔赫特地区,闪电死亡人数最多.
- 农民和渔民被确定为最脆弱的职业群体.
- 季风季节经历了与闪电有关的死亡和受伤的最高频率.
结论:
- 将气象和卫星数据与GIS相结合,为分析闪电风险提供了一个强大的方法.
- 针对孟加拉国东北部和季风季节的有针对性的干预措施对于减少伤亡至关重要.
- 调查结果强调需要加强公众意识和保护弱势社区的保护措施.
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