Formations of groundwater hydrogeochemistry in a karst system during storm events as revealed by PCA

• 来源期刊: 科学通报(英文版)
• 学科: 地球科学
• 关键词: 水文地球化学特征 主成分分析 岩溶地下水 化学系统 风暴 氯离子浓度 土壤侵蚀 浓度增加
• 年，卷（期）: 2010,（14）
• 页码范围: 1412-1422
• 页数: 11页
• 分类号: P641.3 O212.4
• 语种: 英文

摘要

High-frequency samples have been collected at Jiangjia Spring, the outlet of Qingmuguan underground river system (QURS) in Chongqing in late April, 2008. The variations of hydrogeochemical compositions are found responding rapidly to storm events. Principal component analysis (PCA) of the 20 variables is employed to interpret the relationships with specific processes that control the groundwater hydrogeochemical formations. Through PCA, 84.961%of the total amount information is extracted to indicate the fo...