摘要
针对2015年5月9~11日香港地区的一次连续性强降水,利用GAMIT软件反演了降水过程中各站逐时GPS/PWV资料,详细分析了GPS/PWV的变化特征。结果表明：单CORS站GPS/PWV大小与其局域实际降水量大小无直接的关系;3 h GPS/PWV等值线变化图可以从整体上很好地反映实际降水过程中GPS/PWV的演变过程;区域GPS/PWV分布因其特殊的地理环境而呈现一定的规律性;GPS/PWV在达到峰值以后的下降过程中,当RH值激增至高值稳定区时发生强降水的可能性非常大。
For a continuous heavy rain in Hong Kong during 9 ~ 11 May 2015,this article uses GAMIT software to calculate the hourly GPS / PWV data in the process of precipitation,we analysis the characteristics of GPS / PWV’s changing in details. The results showed that： there is no relationship between GPS / PWV of single CORS station and the actual level of local rainfall; 3 hours’ changing isoline map can reflect the overall evolution of GPS / PWV intuitively in the actual rainy process. The regional GPS / PWV distributes regularly because of the certain special geographical environment; In the decline after the peak of GPS / PWV,the possibility of heavy rainfall occurs is very high when the RH has increased to high and stable level.
出处
《测绘与空间地理信息》
2015年第11期66-70,共5页
Geomatics & Spatial Information Technology
基金
贵州省科技厅联合项目(黔科合LH字[2014]7646
黔科合LH字[2014]7649)
贵州大学测绘科学与技术研究生创新实践基地建设项目(贵大研CXJD[2014]002])
贵州大学教育教学改革研究项目(JG2013074
JG2013045
JG2013046)资助
