桂林地区大气降水（大雨、暴雨）的δ18O特征与水汽来源的关系

朱晓燕; 张美良; 吴 夏; 潘谋成

doi:10.11932/karst20170201

桂林地区大气降水（大雨、暴雨）的δ18O特征与水汽来源的关系

doi: 10.11932/karst20170201

中国地质科学院岩溶地质研究所/国土资源部、广西岩溶动力学重点实验室

基金项目: 国家自然科学基金（批准号41372190，41530316）；中国地质科学院基本科研业务费(YYWF201513)；地质调查项目（DD20160305）；广西自然科学基金（2002371410020）

计量
- 文章访问数: 1874
- HTML浏览量: 321
- PDF下载量: 903
- 被引次数: 0
出版历程
- 发布日期: 2017-04-25

The relationship between δ18O characteristics of the precipitation(heavy rainfall or rainstorm) and its water vapor sources in Guilin, China

Institute of Karst Geology,CAGS/Key Laboratory of Karst Dynamics,MLR & GZAR

摘要

摘要: 现代大气降水中的稳定同位素组成是全球或地区性水循环研究的重要载体，同时也是冰芯、湖泊沉积物、石笋等研究领域中，运用稳定同位素来重建古气候的重要依据。本文研究了桂林地区2012年大气降水氢氧同位素组成的逐日变化，根据得到的132组氢氧稳定同位素组成建立了桂林局地大气降水线方程为δD = 8.8δ18O +17.96，大气降水的δ18O波动范围在-13.56‰～+1.07‰，平均为-5.78‰；δD在-101.52‰～+16.02‰，δD平均为-41.03‰。利用降水稳定同位素资料，结合后向轨迹法( Backwards Trajectory) 对桂林水汽来源进行追踪，发现夏季(5-10月)大气降水的水汽来源主要受来自孟加拉湾、南海海洋气团的水汽源的控制，降水的δ18O值偏负，平均为-8.02‰(共64组)；冬季(11月至次年4月)大气降水的水汽来源主要受来自西太平洋暖湿气团、冬季风冷气团或西风环流所携带的大陆性气团的影响，不同程度地叠加了局地环流气团、蒸发水汽的补给的影响，降水的δ18O值偏正，平均为-2.86‰(共68组)。研究结果表明，桂林大气降水的稳定同位素组成与降水的水汽来源、季风类型、降水云团来源和性质有关，来自远距离输送夏季风海洋性水汽团形成的降水δ18O值较低(或偏负)，而大陆性气团或局地蒸发水汽循环形成的降水δ18O值较高（或偏正）。不同的水汽来源是决定降水中δ18O值变化的主要因素，因此，通过降水中的δ18O值，特别是其季节变化的特征分析，可以反过来揭示当地降水的水汽来源。
- 大气降水 /
- δ18O特征 /
- 后向轨迹法 /
- 水汽来源 /
- 桂林
Abstract: It is significant to use stable isotopic of modern meteoric precipitation for the global or regional water cycle research, which is also important component in reconstructing paleoclimate in the studies of ice cores, lake sediments, stalagmites and the others. Oxygen and hydrogen stable isotopes (δ18O andδD) in the meteoric precipitation collected from each heavy rain event from January to December in 2012 in Guilin,are studied in this paper. The overall correlation between δ18O and δD is obtained as δD = 8.8 δ18O +17.96 from 132 stable hydrogen and oxygen isotope components. During the monitoring period, δ18O values of the meteoric precipitation varied -13.56 ‰ to +1.07 ‰ with an averageδ18O value of -5.78 ‰ (VSMOW) and theδD values of the meteoric precipitation are between -101.52 ‰ and +16.02 ‰ with an average of -41.03‰ (VSMOW).Using Backward Trajectory technology of the HYSPLIT model and the data of precipitation isotopes in Guilin, it was found that the water vapor sources of the meteoric precipitation in the summer time (May to October) is mainly controlled by the water vapor of the marine airmasses from the Indian Ocean or Gulf of Bengal and the South China Sea, secondly from the West Pacific Ocean. The δ18O value of the meteoric precipitation is more negative with average δ18O value of -8.02 ‰ (average of 64 groups) and accounts for 53.3% of the total meteoric precipitation. And the water vapor sources of the meteoric precipitation in the winter monsoon (November to the next April) are mainly affected by the warm-moist airmasses of the West Pacific Ocean and the continental cold air mass flow carried by the westerly wind zone (or the winter monsoon) and sometimes superposed by the part of the local evaporation moisture circulation. In this period, theδ18O value of the meteoric precipitation is more positive with average of -2.86 ‰ (average of 68 groups) and accounts for 46.7% of the total meteoric precipitation.The research results show that the stable isotopic composition of modern meteoric precipitation in Guilin is related to the monsoon type and source of the meteoric precipitation cloud and property of the meteoric precipitation. Theδ18O value of the meteoric precipitation from far transmission of water vapor of the marine air masses carried by the summer monsoon is more negative. In contrast, the δ18O value is more positive while the meteoric precipitation is controlled by the continental cold air mass flow carried by the westerly wind zone, or by the overlay of winter monsoon with localised air moisture circulation. These results indicate that the different sources of water vapor have significant influences on the δ18O variation of the meteoric precipitation. Therefore, analysis ofδ18O in the meteoric precipitation, especially its seasonal variation characteristics in turn reveals the water moisture sources of local meteoric precipitation.
- precipitation /
- oxygen isotope characteristics /
- Backward Trajectory technology /
- water vapor sources /
- Guilin

HTML

参考文献(39)

[1]	Yamanaka T，Tsujimura M，Oyunbaatar D，et al.Isotopic variation of precipitation over eastern Mongolia and its implication for the atmospheric water cycle ［J］. Journal of Hydrology，2007，33(1): 21-34.
[2]	Gammons C H，Poulson S R，Pellicori D A， et al .The hydrogen and oxygen isotopic composition of precipitation，evaporated mine water， and river water in Montana， USA［J］.Journal of Hydrology，2006，328(1/2):319-330.
[3]	Cobb K M，Adkins J F，Partin J W，et al. Regional scale climate influences on temporal variations of rainwater and cave drip-water oxygen isotopes in northern Borneo［J］. Earth and Planetary Science Letters，2007，263(3/4): 207-220.
[4]	Craig H. Isotopic variations in meteoric waters［J］. Science，1961，133:1702-1703.
[5]	IAEA. Isotope Hydrology and Integrated Water Resources Management［M］.Unedited Proceedings，2003.
[6]	Dansgaard W. Stable isotopes in precipitation［J］. Tellus，1964，16(4): 436-468.
[7]	Harvey F，Welker J. Stable isotopic composition of precipitation in the semi-arid northcentral portion of the US Great Plains［J］. Journal of Hydrology，2000，238(1/2):90-109.
[8]	Njitchoua R， Sigha Nkamdjou L, Dever L， et al. Variations of the stable isotopic compositions of rainfall events from the Cameroon rain forest，Central Africa［J］. Journal of Hydrology，1999，223(1/2): 17-26.
[9]	Saravana Kumar U，Kumar B，Rai S P，et al. Stable isotope ratios in precipitation and their relationship with meteorological conditions in the Kumaon Himalayas，India［J］. Journal of Hydrology，2010，391(1/2): 1-8.
[10]	郑淑蕙，侯发高，倪葆龄.我国大气降水的氢氧同位素研究［J］.科学通报，1983，28(3):801-806
[11]	Martinelli L A，Victoria R L， Sternberg L S， et al. Using stable isotopes to determine sources of evaporated water to the atmosphere in the Amazon basin［J］. Journal of Hydrology，1996，183(3/4): 191-204.
[12]	DeWalle D R，Edwards P J，Swistock B R，et al. Seasonal isotope hydrology of three Appalachian forest catchments［J］. Hydrological Processes，1997，11(15): 1895-1906.
[13]	Sengupta S， Sarkar A. Stable isotope evidence of dual (Arabian Sea and Bay of Bengal) vapour sources in monsoonal precipitation over north India［J］. Earth Planet Sci Lett， 2006， 250: 511-521.
[14]	庞洪喜，何元庆，张忠林.重要海-气-天文事件与新德里季风季水中δ18O的关系［J］.冰川冻土，2004，26(1): 42-47.
[15]	章新平，刘晶淼，中尾正义，等．我国西南地区降水中过量氘指示水汽来源［J］．冰川冻土，2009，31(4):613-619．
[16]	薛积彬，钟巍，赵引娟．广州大气降水中δ18O 与气象要素及季风活动之间的关系［J］．冰川冻土，2008，30(5):761-768．
[17]	田立德，马凌龙，余武生，等．青藏高原东部玉树降水中稳定同位素季节变化与水汽输送［J］．中国科学D辑.2008，38(8):986-992．
[18]	Zhang X P，Nakawo M，Yao T D，et al． Variations of stable isotopic compositions in precipitation on the Tibetan Plateau and its adjacent regions［J］．Science in China ( Series D)，2002，45(6):481-493．
[19]	Tian L D，Yao T D，Schuster P F， et al．Oxygen18 concentrations in recent precipitation and ice cores on the Tibetan Plateau［J］. Journal of Geophysical Research.2003，108(D9):4293-4302．
[20]	Liu J R，Song X F，Sun X M，et al．Isotopic composition of precipitation over arid Northwestern China and its implications for the water vapor origin［J］．Journal of Geographical Sciences，2009，19(2):164-174．
[21]	Zhang X P，Liu J M，Sun W Z，et al．Relations between oxygen stable isotopic ratios in precipitation and relevant meteorological factors in southwest China［J］． Science in China ( Series D) ，2007，50(4) : 571-581．
[22]	Liu J R，Song X F，Yuan G F，et al． Characteristics of δ18O in precipitation over eastern monsoon China and the water vapor sources［J］．Chinese Science Bulletin，2010，55(2):200-211．
[23]	Wei Keqin， Lin Ruifen. The influence of the monsoon climate on the isotopic composition of precipitation in China［J］. Geochemica，1994，23(1):32-41.
[24]	张明军，马潜，李亚举，等．季风边缘区降水中δ18O化特征及水汽来源分析：以兰州市为例［J］．西北师范大学学报(自然科学版),2011，47(6):80-86.
[25]	柳鉴容，宋献方，袁国富,等. 西北地区大气降水δ18O 的特征及水汽来源［J］. 地理学报,2008，63(1):12-22.
[26]	吴华武，章新平，孙广禄,等.长江流域大气降水中δ18O 变化与水汽来源［J］.气象与环境学报,2011，27(5):7-12.
[27]	吴华武，章新平，关华德，等.不同水汽来源对湖南长沙地区降水中δD、δ18O的影响［J］.自然资源学报,2012，27(8):1404-1414.
[28]	郑琰明，钟巍，彭晓莹,等. 粤西云浮市大气降水δ18O与水汽来源的关系［J］.环境科学,2009，30(3): 637-643.
[29]	Yurtsever Y.Worldwide Survey of Stable Isotopes in Precipitation ［M］.Report of the isotope hydrology section. Vienna: International Atomic Energy Agency，1975: 1-40．
[30]	章新平，姚檀栋.我国降水中的18O的分布特点［J］.地理学报,1998，53(4):356-363.
[31]	刘进达，赵迎昌，刘恩凯，等.中国大气降水稳定同位素时－空分布规律探讨［J］.勘察科学技术,1997，3：34-39.
[32]	赵家成，魏宝华，肖尚斌. 湖北宜昌地区大气降水中的稳定同位素特征［J］.热带地理,2009， 29(6):526-531.
[33]	李廷勇，李红春，沈川洲，等.2006－2008年重庆大气降水δD和δ18O特征初步分析［J］.水科学进展,2010，21(6):757-763.
[34]	李勇.2012年1月大气环流和天气分析［J］.气象,2012，38(4)：495-500.
[35]	樊利强，孙谨.2012年3月大气环流和天气分析［J］.气象,2012，38(6)：751-757.
[36]	陶亦为.2012年8月大气环流和天气分析［J］.气象,2012，38(11):1429-1435.
[37]	花丛.2012年12月大气环流和天气分析［J］.气象,2013，39(3):394-400.
[38]	Draxler R R, Rolph G D.HYSPLIT (HYbrid Single Particle Lagrangian Integrated Trajectory) Model access via NOAA ARL READY Website (http://www.arl.noaa.gov/HYSPLIT.php). NOAA Air Resources Laboratory，College Park，MD,2013.
[39]	Rolph G D， Real-time Environmental Applications and Display system (READY) Website (http://www.ready.noaa.gov). NOAA Air Resources Laboratory，College Park，MD,2013.