[1]王源程,苏鹏程*,陈 聪,等.地基GPS反演泥石流流域局地降水水汽特征——以云南东川蒋家沟为例[J].山地学报,2016,(06):749-756.[doi:10.16089/j.cnki.1008-2786.000182]
 WANG Yuancheng,SU Pengcheng,CHEN Cong,et al.Precipitable Water Vapor in the Debris-Flow Watershed Inversed by Ground-based GPS——A Case Study of the Jiangjia Valley in Yunnan Province[J].Mountain Research,2016,(06):749-756.[doi:10.16089/j.cnki.1008-2786.000182]
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地基GPS反演泥石流流域局地降水水汽特征——以云南东川蒋家沟为例()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2016年06期
页码:
749-756
栏目:
山地灾害
出版日期:
2016-12-08

文章信息/Info

Title:
Precipitable Water Vapor in the Debris-Flow Watershed Inversed by Ground-based GPS——A Case Study of the Jiangjia Valley in Yunnan Province
文章编号:
1008-2786-(2016)6-749-08
作者:
王源程123苏鹏程23*陈 聪4倪长健1
1. 成都信息工程学院 大气科学学院,四川 成都 610225;
2. 中国科学院山地灾害与地表过程重点实验室,四川 成都 610041;
3. 中国科学院水利部成都山地灾害与环境研究所,四川 成都 610041;
4. 四川省地震局,四川 成都 610041
Author(s):
WANG Yuancheng123 SU Pengcheng23 CHEN Cong4 NI Changjian1
1.School of Atmospheric Science, Chengdu University of Information and Technology, Chengdu, Sichuan 610225, China;
2.Key Laboratory of Mountain Hazards and Surface Process, CAS, Chengdu, Sichuan 610041, China;
3.Inst. of Mountain Hazards and Environment, CAS, Chengdu, Sichuan 610041, China;
4.Sichuan Earthquake Administration, Chengdu, Sichuan 610041, China
关键词:
地基GPS泥石流流域大气可降水量(PWV)降水预警
Keywords:
the Ground-Based GPS debris-flow watershed Precipitable Water Vapor(PWV) Precipitation forecast
分类号:
P642.23; P426.615
DOI:
10.16089/j.cnki.1008-2786.000182
文献标志码:
A
摘要:
在暴雨型泥石流预警预报中,如何准确获取有效的降水信息是关键问题。基于蒋家沟流域内布设的地基GPS观测站和流域内3个雨量站点,对比分析大气可降水量(PWV)和站点实际降水,发现PWV变化趋势与降水的发生有较好的对应关系,降水一般发生在PWV的峰值处或滞后于峰值发生;根据PWV过程中的极小值将长序列PWV过程划分为数组短序列PWV过程,引入前期PWV和有效PWV,通过有降水的前期累积PWV和有效累积PWV的散点函数拟合确定降水发生时的PWV临界线,PWV临界线将为泥石流流域的降水预警提供依据,同时可证明地基GPS反演PWV对泥石流流域尺度下的降水预警具有重要价值,其反演得到的PWV不仅是降水预报中的重要因子,PWV临界线的确定亦为降水的准确性和时效性提供参考。
Abstract:
Accurate and effective precipitation information is crucial for forecast of rainstorm debris-flow. The value of the water vapor, which has indicative significance for the occurrence and continual of the precipitation, has become the key factor of rainfall prediction. This study was aimed to interpret the process of Precipitable Water Vapor(PWV)being translated into the observed precipitation and analyze the characteristic of PWV when the precipitation trigger debris-flow. Based on the data from ground-based GPS station and three rainfall stations in the Jiangjia valley, a relationship between the trend of PWV and the occurrence of precipitation was found. Precipitation always occurred in or after the peak of PWV curve. The long PWV curve was divided into several short PWV curves by the minimum value of PWV. Then the preliminary PWV and effective PWV were defined. The critical PWV line was determined by fitting function of the preliminary PWV and effective PWV, which made a contribution to precipitation forecast. It was proved that the PWV inversed by ground-based GPS is of great significance to forecast of precipitation in the debris-flow watershed.

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备注/Memo

备注/Memo:
基金项目(Foundation item):中国科学院山地灾害与地表过程重点实验室开放基金; 中国科学院西部之光博士项目(Y4R2090090)[Open Foundation of Key Laboratory of Mountain Hazards and Surface Process; the Doctor Project of Western Light, Chinese Academy of Sciences(Y4R2090090)]
作者简介(Biography):王源程(1989-),女,硕士研究生,主要从事气象防灾减灾研究 [Wang Yuancheng(1989-),female,M.Sc. candidate,major in meteorological disaster prevention and mitigation] E-mail: wangyuancheng10@163.com
*通信作者(Corresponding author):苏鹏程(1981-),男,博士,主要从事山地灾害风险评价与预警报方面的研究 [Su Pengcheng(1981-),male,Ph.D,major in mountain hazards risk assessment and prediction] E-mail: supengcheng@imde.ac.cn
更新日期/Last Update: 2016-11-30