Water H-O isotopic characteristics of Nandu River estuary and their response to typhoon "Kalmaegi"

LIU Jinqing; YIN Ping; GAO Fei; CHEN Bin; LIAN Ergang

doi:10.16562/j.cnki.0256-1492.2018.01.017

Marine Geology & Quaternary Geology > 2018 > 38(1): 170-177. > DOI: 10.16562/j.cnki.0256-1492.2018.01.017

LIU Jinqing, YIN Ping, GAO Fei, CHEN Bin, LIAN Ergang. Water H-O isotopic characteristics of Nandu River estuary and their response to typhoon "Kalmaegi"[J]. Marine Geology & Quaternary Geology, 2018, 38(1): 170-177. DOI: 10.16562/j.cnki.0256-1492.2018.01.017

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Water H-O isotopic characteristics of Nandu River estuary and their response to typhoon "Kalmaegi"

LIU Jinqing^1,2,,
YIN Ping^1,2,
GAO Fei^1,2, ,,
CHEN Bin^1,2,
LIAN Ergang³

1.
Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao Institute of Marine Geology, Qingdao 266071, China
2.
Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
3.
Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China

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Received Date: May 30, 2017
Revised Date: October 29, 2017

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Abstract

Abstract

Frequent summer typhoon in subtropical regions brings significant impacts on water environment in estuaries. Based on the in-situ hydrographic observation in 2014, this paper portrays the characteristics and changes of water H-O isotope compositions in the Nandu River Estuary during the typhoon Kalmaegi. Results show that atmospheric precipitation, which is mainly derived from the water vapor transported from the tropical Pacific, is the main factor controlling the compositions of the H-O isotope in the typhoon period. After the typhoon, evaporation is strengthened with the decrease in rainfall and increase in temperature, and as the results, the contents of H-O isotopes are increased in water. The large amount of fresh water brought in by the Typhoon Kalmaegi will certainly bring in changes in the estuarine environment. The tidal current limit will move towards the river mouth, water mix strongly, and brackish water front form outside the river mouth. This study provides observational evidence for understanding the impact of typhoon on the water cycle of small-medium rivers in subtropical regions.
- H-O isotope,
- hydrology,
- typhoon Kalmaegi,
- Nandu River

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References (21)

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