灾害学
災害學
재해학
JOURNAL OF CATASTROPHOLOGY
2015年
1期
102-107
,共6页
泥石流%地质地貌%天气学成因%雷达回波%卫星云图%云南福贡
泥石流%地質地貌%天氣學成因%雷達迴波%衛星雲圖%雲南福貢
니석류%지질지모%천기학성인%뢰체회파%위성운도%운남복공
mudslide%geology and geomorphology%synoptic cause%Radar echo%Satellite Image%Fugong in Yunnan
2004年5月10日云南怒江州福贡县石月亮乡发生泥石流等地质灾害，造成人员、经济重大损失。分析了此次泥石流形成的条件，并着重探讨了天气学成因，结果表明：脆弱的地质环境、陡峻的迎风坡、便于集水、集物的地形地貌和丰富的松散物质是怒江贡山泥石流易发生的有利地质地貌条件；连续性累积降水及短时间暴雨的产生为泥石流提供了较好的水源条件；高原短波槽与孟加拉湾南支槽东移合并，中、低层槽前西偏南暖湿气流500 hPa偏西北气流是形成怒江暴雨过程的大尺度天气环流背景；地面辐合线、干线、低层显著湿区、湿舌等是导致降水的中尺度系统；高能高湿的潜在不稳定及近地层的水汽辐合是暴雨发生的有利条件；多普勒雷达图10～20 dBz分散的絮状回波、部分35 dBz块絮状回波、卫星云图多絮状对流云、无强对流云团活动反映此次暴雨过程为非对流性暴雨。
2004年5月10日雲南怒江州福貢縣石月亮鄉髮生泥石流等地質災害，造成人員、經濟重大損失。分析瞭此次泥石流形成的條件，併著重探討瞭天氣學成因，結果錶明：脆弱的地質環境、陡峻的迎風坡、便于集水、集物的地形地貌和豐富的鬆散物質是怒江貢山泥石流易髮生的有利地質地貌條件；連續性纍積降水及短時間暴雨的產生為泥石流提供瞭較好的水源條件；高原短波槽與孟加拉灣南支槽東移閤併，中、低層槽前西偏南暖濕氣流500 hPa偏西北氣流是形成怒江暴雨過程的大呎度天氣環流揹景；地麵輻閤線、榦線、低層顯著濕區、濕舌等是導緻降水的中呎度繫統；高能高濕的潛在不穩定及近地層的水汽輻閤是暴雨髮生的有利條件；多普勒雷達圖10～20 dBz分散的絮狀迴波、部分35 dBz塊絮狀迴波、衛星雲圖多絮狀對流雲、無彊對流雲糰活動反映此次暴雨過程為非對流性暴雨。
2004년5월10일운남노강주복공현석월량향발생니석류등지질재해，조성인원、경제중대손실。분석료차차니석류형성적조건，병착중탐토료천기학성인，결과표명：취약적지질배경、두준적영풍파、편우집수、집물적지형지모화봉부적송산물질시노강공산니석류역발생적유리지질지모조건；련속성루적강수급단시간폭우적산생위니석류제공료교호적수원조건；고원단파조여맹가랍만남지조동이합병，중、저층조전서편남난습기류500 hPa편서북기류시형성노강폭우과정적대척도천기배류배경；지면복합선、간선、저층현저습구、습설등시도치강수적중척도계통；고능고습적잠재불은정급근지층적수기복합시폭우발생적유리조건；다보륵뢰체도10～20 dBz분산적서상회파、부분35 dBz괴서상회파、위성운도다서상대류운、무강대류운단활동반영차차폭우과정위비대류성폭우。
Mudslides and some other geological disasters occurred in Fugong Stone Moon Township on May 1 0,201 4,caused casualties and significant economic losses.Conditions of mudslides especially causes of the syn-optic are analyzed.Results show that,the fragile geological environment,the steep windward slope and the topog-raphy that is easy to accumulate water and the abundant loose material are favorable geological and geomorphologi-cal conditions for Gongshan landslides.Continuity cumulative rainfall and short-term storm provide better water conditions to debris flows.The eastward merger of plateau shortwave trough and Bay of Bengal WEBTISR,the low-level southwest warm and humid airflow,and northwest airflow in 500hPa are the large-scale weather circulation background resulting Nu -jiang rainstorm.Ground convergence line,trunk,significantly lower wet areas,wet tongue and so are these mesoscale systems leading to rainfall.The potential instability of energy and humidity,and moisture convergence in Near-surface are beneficial conditions of the rainstorms.Many 1 0 ~20dBz dispersed flocculent echo and few 35 dBz block flocculent echo are shown in Doppler radar PPI and many flocculent convective clouds and no strong convective cloud clusters are shown in satellite images,which reflect that the heavy rains are not strong convective rains.
