Temperature Inversion in the Thermohaline Frontal Zone at the Yellow Sea Entrance in Winter

Title
Temperature Inversion in the Thermohaline Frontal Zone at the Yellow Sea Entrance in Winter
Author(s)
이흥재; 조철호; 정경태; 이석; 오경희
KIOST Author(s)
Cho, Cheol Ho(조철호)Lee, Seok(이석)Oh, Kyung-Hee(오경희)
Publication Year
2014-12-11
Abstract
Temperature inversion (higher temperature at deeper depth) in winter as waell as its relation to advection was investigated by analyzing both CTD data in the southern Yellow Sea (YS) and northwestern East China Sea in the winter of 2002-2003 and time series data of tenperature, salinity, and current at a buoy station at the YS entrance. Significant temperature inversions occurred mostly along the thermohaline front at tye YS entrance where the Cheju Warm Current water (CWCW) and the cold coastal waters met together. In the northern frontal zone along 34 N in February 2003 where isotherms and isohalines were declined downward to the north, particularly large inversions with temperautre difference larger than 2 degree were observed in troughs of the wave-like frontal meander whre the cold Korean coastl water(KCW) was advanced farther southward than in crests. At the buoy station in the frontal zone, the inversion persisted until mid April and both temperature and salinity showed simultaneous variations in the same manner. At episodic occurrences of large inversion, temperature and salinity decreased sharply in the upper layer, but increased concurrently in the lower layer. The episodic inversions were found to be closely related to the westward advection of the KCW in the upper layer and the northward advection of the CWCW in the lower layer.3 and time series data of tenperature, salinity, and current at a buoy station at the YS entrance. Significant temperature inversions occurred mostly along the thermohaline front at tye YS entrance where the Cheju Warm Current water (CWCW) and the cold coastal waters met together. In the northern frontal zone along 34 N in February 2003 where isotherms and isohalines were declined downward to the north, particularly large inversions with temperautre difference larger than 2 degree were observed in troughs of the wave-like frontal meander whre the cold Korean coastl water(KCW) was advanced farther southward than in crests. At the buoy station in the frontal zone, the inversion persisted until mid April and both temperature and salinity showed simultaneous variations in the same manner. At episodic occurrences of large inversion, temperature and salinity decreased sharply in the upper layer, but increased concurrently in the lower layer. The episodic inversions were found to be closely related to the westward advection of the KCW in the upper layer and the northward advection of the CWCW in the lower layer.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25698
Bibliographic Citation
황해냉수 6차 한중워크샵, pp.6, 2014
Publisher
KIOST
Type
Conference
Language
English
Publisher
KIOST
Related Researcher
Research Interests

seawater property analysis,current circulation analysis,ocean dynamics analysis,해양물성분석,해수유동분석,해양역학분석

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