CAJ | 학술논문

为揭示洞穴滴水氢氧同位素特征及气候意义，对金华北山双龙洞和二仙洞的大气降水、洞穴滴水、岩石裂隙水、地下河水、洞外泉水进行了7～9个月的连续监测和分析。结果表明：①地表水的氧同位素变化幅度大于洞穴水，说明其对外界环境的响应比洞穴水更敏感。②洞穴滴水的氢氧同位素值并没有与大气降水线完全吻合，大部分投影在雨水线下，这反映了地表的蒸发作用以及包气带含水层对滴水存在着显著的调蓄作用。③滴水的δ18 OV-SMOW具有干湿季变化特征，旱季偏正，雨季偏负，但滴水δ18 OV-SMOW值滞后2～3个月。本研究结果可为重建金衢盆地的古环境提供依据。
위게시동혈적수경양동위소특정급기후의의，대금화북산쌍룡동화이선동적대기강수、동혈적수、암석렬극수、지하하수、동외천수진행료7～9개월적련속감측화분석。결과표명：①지표수적양동위소변화폭도대우동혈수，설명기대외계배경적향응비동혈수경민감。②동혈적수적경양동위소치병몰유여대기강수선완전문합，대부분투영재우수선하，저반영료지표적증발작용이급포기대함수층대적수존재착현저적조축작용。③적수적δ18 OV-SMOW구유간습계변화특정，한계편정，우계편부，단적수δ18 OV-SMOW치체후2～3개월。본연구결과가위중건금구분지적고배경제공의거。
In order to reveal the characteristics and palaeoclimatic significance of hydrogen and oxygen i-sotopes of cave drip water ,the paper analyzed and measured the atmosphere precipitation ,cave drip wa-ter,rock fissure water ,river ground water and spring water in both Double Dragon Cave and Erxian Cave for 7~9 consecutive months .The results showed that: ① the variation of δDV-SMOW and δ18 OV-SMOW of surface water is greater than that of cave water ,which responses to external environment more sensitively .②the δDV-SMOW and δ18 OV-SMOW values of drip water is not completely coincided with MWL .Most of the projects are below MWL which indicates that the evaporation of land surface and the aquifer of storage wa -ter have obvious regulation function on drip water performed .③theδ18 OV-SMOW value of drip water pos-sesses the characteristics of temporal variability of dry and wet seasons .It is lower in summer rainy sea-son,while it is higher in winter dry season ,but the lag time is about 2 to 3 months.This results can pro-vide the basis for reconstructing paleoenvironment in Jinhua -Quzhou basin .