CAJ | 학술논문

文章对重庆市北碚区西南大学2013年10-12月间降水进行收集并测试样品中δD、δ18 O 值,得到重庆大气降水线方程δD=8.19δ18 O +17.39,r=0.97(p<0.01)；发现该地区降水中δ18 O 与气温、降水量之间存在反温度效应、降雨量效应,但两种效应表现较弱。该地区10-12月大气水汽中的同位素组成复杂,场降水中δD、δ18 O 的变化受天气因素影响大。为了探明水汽输送过程中δD 和δ18 O 变化,采用 HYSPLIT 模式追踪并验证该地区场降水的水汽输送轨迹,发现该时段西南季风较弱,主要受西风影响,10、11月水汽主要来源于中国横断山区三江流域,测试表明11月存在台风海燕的水汽输送记录,不同水汽来源对δD、δ18 O 的影响较大、响应值较好,12月主要来自局地的水汽蒸发。
문장대중경시북배구서남대학2013년10-12월간강수진행수집병측시양품중δD、δ18 O 치,득도중경대기강수선방정δD=8.19δ18 O +17.39,r=0.97(p<0.01)；발현해지구강수중δ18 O 여기온、강수량지간존재반온도효응、강우량효응,단량충효응표현교약。해지구10-12월대기수기중적동위소조성복잡,장강수중δD、δ18 O 적변화수천기인소영향대。위료탐명수기수송과정중δD 화δ18 O 변화,채용 HYSPLIT 모식추종병험증해지구장강수적수기수송궤적,발현해시단서남계풍교약,주요수서풍영향,10、11월수기주요래원우중국횡단산구삼강류역,측시표명11월존재태풍해연적수기수송기록,불동수기래원대δD、δ18 O 적영향교대、향응치교호,12월주요래자국지적수기증발。
Based on monitoring data and meteorological elements at School of Geographical Sciences,South-west University of Chongqing,which were collected from October to December 2013, the LMWL of Chongqing is formulated as δD= 8.1 9δ1 8 O+17.39,r=0.97(p<0.001).The influence of short-term weath-er factors accounts for the larger slope and intercept value of the LMWL.The characteristics of the hydrogen isotope and oxygen isotope and their relationships with temperature and precipitation were analyzed to reveal the moisture sources based on the statistics.The statistics shows that the relationships between hydrogen i-sotope and oxygen isotope are not obvious.Further study suggests that the co-existence of summer monsoon and winter monsoon during the transition span from October to December complicated isotope composition in precipitation.Then by virtue of HYSPLIT modeling,the vapor transport trajectories of every precipitation in Beibei of Chongqing during October to December 2013 are drawn.The resalts show that south-west monsoon was weak and the weather was affected mainly by westerlies in this period.The moisture sources of October and November 2013 were mainly from the Sanjiang drainage in the Hengduan Mountains,and there was moisture transport from tropical storm Haiyan in November.Different moisture sources have great influence toδD andδ1 8 O,and the value ofδD andδ1 8 O have good respond to the different source.While moisture source of rain in December 2013 was mainly from local evaporation.