[Response and Control Factors of Groundwater to Extreme Weather, Jiguan Cave, Henan Province, China].
Huan Jing Ke Xue
; 36(5): 1582-9, 2015 May.
Article
in Zh
| MEDLINE
| ID: mdl-26314103
ABSTRACT
Geochemical dynamics of cave water were monitored to unveil its variation and controlling factors from October 2009 to December 2013 in Jiguan Cave,west of Henan province,southeastern coast of the loess plateau. The results showed that (1) the hydrochemical types of the cave water are HCO(3-)-Ca(2+)-Mg2+ and HCO(3-)-Mg(2+)-Ca2+. HCO(3-) are over 80% of the anions, Ca2+ and Mg2+ are the dominate cations, and ground river keeping in erosion and pool water drips in deposition all the year. (2) Dripping water and pool water in Ji guan cave can respond perfectly to the change of external climate environment, which geochemistry indexes possess the extraordinary seasonal effects. (3) The concentration changes of the Ca2+, Mg2+ , SO4(2-) responded sensitively to annual precipitation change. Ca2+, Mg2+, SO4(2-) rise in waterlogging year and fall in drought year. Because HCO(3-) controlled by CO2 concentration. HCO(3-) concentration showed a unconspicuous response to the change of external climate environment. (4) The concentration changes of Ca2+, Mg2+, SO4(2-) have no obvious seasonal variation and showed a unconspicuous response to the change of external climate environment.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Weather
/
Groundwater
/
Caves
Country/Region as subject:
Asia
Language:
Zh
Journal:
Huan Jing Ke Xue
Year:
2015
Document type:
Article
Country of publication:
CHINA
/
CN
/
REPUBLIC OF CHINA