Environment 版 (精华区)

发信人: ersy (Green Mouse), 信区: Environment
标  题: 什么是扬沙、沙尘暴与浮尘(转载)
发信站: 哈工大紫丁香 (2002年03月20日22:29:48 星期三), 转信

【 以下文字转载自 HITComment 讨论区 】
【 原文由 zhou 所发表 】
发信人: wangzi (穷且益坚，不坠青云之志), 信区: News                                                                     
标  题: 新闻背景：什么是扬沙、沙尘暴与浮尘                                                                              
发信站: BBS 水木清华站 (Wed Mar 20 17:15:22 2002)                                                                       

2002年3月20日14:24　 新华网                                                                                             
　　                                                                                                                    
　　新华网北京3月20日电                                                                                                 
　　新华社记者李佳路赵承                                                                                                
　　我国北方地区3月18日以来再次出现了沙尘暴天气，肆虐的黄风给人们的生活带来了                                           
不便。                                                                                                                  
　　什么是扬沙、沙尘暴与浮尘呢？中央气象台的专家介绍说，扬沙与沙尘暴都是由于                                            
本地或附近尘沙被风吹起而造成的。其共同特点是能见度明显下降，出现时天空混浊，                                            
一片黄色。两者大多在冷空气过境或雷雨、飑线影响时出现，北方都是在春季容易出现                                            
。所不同的是扬沙天气风较大，影响的能见度在1公里到10公里之间；沙尘暴风很大，能                                           
见度小于1公里。而浮尘是由于远地或本地产生沙尘暴或扬沙后，尘沙等细粒浮游空中而                                           
形成，俗称“落黄沙”，出现时远方物体呈土黄色，太阳呈苍白色或淡黄色，能见度小                                            
于10公里，大致出现在冷空气过境前后。（完）                                                                              

--                                                                                                                      
             当我走在平原，总是羡慕高山                                                                                 
             当我登上高山，却又回首平原                                                                                 
             当我住在故园，总是向往彼岸                                                                                 
             当我到达彼岸，总是怀念故园                                                                                 
标  题: 新闻背景：什么是扬沙、沙尘暴与浮尘                                                                              
发信站: BBS 水木清华站 (Wed Mar 20 17:15:22 2002)                                                                       

2002年3月20日14:24　 新华网                                                                                             
　　                                                                                                                    
　　新华网北京3月20日电                                                                                                 
　　新华社记者李佳路赵承                                                                                                
　　我国北方地区3月18日以来再次出现了沙尘暴天气，肆虐的黄风给人们的生活带来了                                           
不便。                                                                                                                  
　　什么是扬沙、沙尘暴与浮尘呢？中央气象台的专家介绍说，扬沙与沙尘暴都是由于                                            
本地或附近尘沙被风吹起而造成的。其共同特点是能见度明显下降，出现时天空混浊，                                            
一片黄色。两者大多在冷空气过境或雷雨、飑线影响时出现，北方都是在春季容易出现                                            
。所不同的是扬沙天气风较大，影响的能见度在1公里到10公里之间；沙尘暴风很大，能                                           
见度小于1公里。而浮尘是由于远地或本地产生沙尘暴或扬沙后，尘沙等细粒浮游空中而                                           
形成，俗称“落黄沙”，出现时远方物体呈土黄色，太阳呈苍白色或淡黄色，能见度小                                            
于10公里，大致出现在冷空气过境前后。（完）                                                                              

--                                                                                                                      
             当我走在平原，总是羡慕高山                                                                                 
             当我登上高山，却又回首平原                                                                                 
             当我住在故园，总是向往彼岸                                                                                 
             当我到达彼岸，总是怀念故园                                                                                 
标  题: 图文：北京遭遇罕见沙尘暴天气 天色一片昏黄                                                                       
发信站: BBS 水木清华站 (Wed Mar 20 17:15:48 2002)                                                                       

http://news.sohu.com/67/05/news148210567.shtml                                                                          

2002年3月20日13:40　 中国日报网站                                                                                       
　　2002年3月20日，王先生用手帕遮着嘴从西直门桥上走过。上午10时后，北京灰蒙蒙                                           
的天空逐渐变成了土红色，空气中弥漫着浓重的土腥味直窜鼻中。                                                              
　　中央气象台专家说，这是入春以来出现的范围最大、强度最强，影响最严重的沙尘                                            
天气。版权所有请勿转载                                                                                                  

--                                                                                                                      
             当我走在平原，总是羡慕高山                                                                                 
             当我登上高山，却又回首平原                                                                                 
             当我住在故园，总是向往彼岸                                                                                 
             当我到达彼岸，总是怀念故园                                                                                 
             当我身处平凡，总是梦想灿烂                                                                                 
             当我得到灿烂，总是留恋平凡                                                                                 


※ 来源:·BBS 水木清华站 smth.org·[FROM: 166.111.53.76]                                                                


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╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣ 
  ︳╳  ︳╳泉涸，鱼相处于陆。相呴以湿，相濡以沫，不若相忘于江湖╳  ︳╳  ︳╳ 
╳╳  ╳╳  ╳╳  ╳╳  ╳╳  ╳╳  ╳╳  ╳╳  ╳╳  ╳╳  ╳╳  ╳╳  ╳╳__ 
╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳￣╳╳   
  ︳╳  ︳╳  ︳╳  ︳╳  ︳╳  ︳╳  ︳╳ ｜ ╳ │ ╳ │ ╳ ｜ ╳ ｜ ╳ ｜ ╳ 
╳╳__╳╳__╳╳__╳╳__╳╳__╳╳__╳╳__╳╳__╳╳__╳╳__╳╳__╳╳__╳╳__ 

※ 来源:·哈工大紫丁香 bbs.hit.edu.cn·[FROM: 202.118.237.90]
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※ 转载:．哈工大紫丁香 bbs.hit.edu.cn．[FROM: 202.118.228.121]