Results 21 to 30 of about 355 (147)
Analysis of geological hazards caused by the “23 • 7” heavy rainfall in the northern section of Taihang Mountain in Hebei Province [PDF]
Heavy rainfall is the main factor triggering geological disasters. In the northern region of China, most of the researches focus on the geologic disasters caused by short-term heavy rainfall, and the researches on the characteristics of geologic ...
Fuji GU +6 more
core +1 more source
Shuitu Baochi Xuebao, 2003 分析发生在2000年7月3～6日,历时72 h,暴雨总量达358.19 mm特大暴雨特征的基础上,通过对小流域出口断面流量的连续监测,进一步分析了暴雨洪水关系及演变过程.结果发现:此次暴雨属于局部性、历时长、中心强度大的特大型暴雨,暴雨强度的峰值达到了32.84 mm/h,出现在降雨过程的后期;暴雨洪水在出口断面上的响应出现在降雨过程的中后期,且后期尤为明显,另外由于流域面积较小,汇流时间短,响应到来的时间也较短.同时,经过进一步分析和计算得出,此次降雨过程的最大洪峰流量为1.185 m3/s ...
曹建生, 张万军, 唐常源
doaj +2 more sources
Analysis on the characteristics of geological disasters and effectiveness of early warning duiring heavy rainfall on “23•7” in Beijing [PDF]
Extreme rainfall is often accompanied by mass geological disasters, which seriously endangers the safety of people 's lives and property in prone areas and affects the healthy development of the economy and society.
Shoujing LUO +6 more
core +1 more source
Comparison of the upper northeasterly flow with and without heavy rain(高空偏北大风与有无暴雨的对比分析)
Zhejiang Daxue xuebao. Lixue ban, 2002 利用常规观测资料对1991～1996年江淮地区梅雨期的高、低层流场进行合成诊断分析.比较了高空偏北大风下有无暴雨在天气形势、物理量特征、三维流场方面的差异.文中一些分析结果可供暴雨预报参考.
DINGHua-jun(丁华君) +1 more
doaj +1 more source
Cause analysis of the rainfall remote from the tropical cyclone in 2012(2012年一次台风远距离暴雨的成因分析)
Zhejiang Daxue xuebao. Lixue ban, 2014 利用NCEP1×1资料和实况雨量资料，对2012年梅雨期首场特大暴雨过程进行了分析，结果表明：(1)本次特大暴雨与典型梅雨的环流形势不同，是西风槽和台风“古超”、“泰利”共同作用的结果.中纬度西风槽提供了有利于暴雨发展的大尺度环流背景，而“古超”东侧的东南暖湿气流沿副高外围向低涡及切变线输送，为暴雨天气提供了充沛的水汽和能量.(2)强降水过程的不同阶段，水汽来源也不同.前期水汽来源于东海和南海，由低空偏南风和东南风急流向暴雨区输送水汽，降水集中期水汽由台风“古超 ...
SHENXiaoling(沈晓玲)
doaj +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2001 利用常规观测资料对1991〜1996年江淮地区梅雨大暴雨期的高、低层流场进行合成诊断分析.结果表明，梅雨期暴雨时，在对流层上部，由于青藏高压向东扩，在高压东侧出现偏北大风轴，由此构成的高空辐散区随着高压的东移而东移，它常常位于低空急流前端的上空，形成上层东北风，下层西南风的特殊耦合关系.
ZHAIGuo-qing(翟国庆), GAOKun(高坤)
doaj +1 more source
Development characteristics and risk assessment of geological hazards in the mountainous and hilly areas of western Zhengzhou City [PDF]
Objective The mountainous and hilly areas of western Zhengzhou City have a complex geological environment, affected by rainfall and human engineering activities. Geological hazards such as collapses, landslides, and debris flows occur frequently.
LIU Songbo +4 more
core +1 more source
Regional correction calibration for OCF precipitation in flood season in Zhejiang Province based on cluster analysis [PDF]
, 2023 The forecast of rainstorm in flood season has always been the key and difficult point in the meteorological forecasting operation. First, we used the daily precipitation data from 2 227 meteorological stations in Zhejiang Province from 2016 to 2021 ...
Chengyan MAO +3 more
core +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2014 基于Micaps常规资料、NCEP再分析资料和中尺度自动站雨量资料，结合WRF高精度数值模拟输出的诊断物理量，研究了 2013年10月7日20：00至8日08：00发生于浙江东北部的短时大暴雨天气过程的成因.结果表明：这次大暴雨过程主要由台风“菲特”残留云系、超强台风“丹娜丝”和北方的弱冷空气共同影响产生；假相当位温及地面风场的分布很好地反映了此次大暴雨过程中的不稳定强对流及冷暖空气交汇的形势.垂直螺旋度、湿位涡的分布及演变情况与强降水的移动及强度变化有很好的对应关系 ...
FANXiaohong(范晓红) +2 more
doaj +1 more source
Shuitu Baochi Xuebao, 2020 为探究降雨和土地利用对南方赤红壤坡面侵蚀特征的影响，通过天然降雨观测试验，定量分析不同土地利用方式（坡耕地、果园、人工草地和撂荒地）下坡面径流和侵蚀泥沙特征，探讨降雨类型及土地利用对坡面侵蚀产沙的影响以及降雨特征参数与坡面水沙指标间的关系。结果表明：（1）2018年研究区降雨主要集中在5—9月，且每月降雨量主要由一场或几场暴雨及大暴雨组成；（2）坡耕地坡面年径流量和年侵蚀量均最大，分别是果园、人工草地以及撂荒地处理下的3.4，8.0，6.0倍和340.5，1 605.3，1 720.3倍；（2）次降雨下，
李桂芳 +4 more
doaj