气候变化领域集成服务门户(CCPortal): New profiling and mooring records help to assess variability of Lake Issyk-Kul and reveal unknown features of its thermohaline structure

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DOI	10.5194/hess-22-6279-2018
	New profiling and mooring records help to assess variability of Lake Issyk-Kul and reveal unknown features of its thermohaline structure
	Zavialov P.O.; Izhitskiy A.S.; Kirillin G.B.; Khan V.M.; Konovalov B.V.; Makkaveev P.N.; Pelevin V.V.; Rimskiy-Korsakov N.A.; Alymkulov S.A.; Zhumaliev K.M.
发表日期	2018
ISSN	1027-5606
起始页码	6279
结束页码	6295
卷号	22 期号:12
英文摘要	This article reports the results of three field campaigns conducted in Lake Issyk-Kul in 2015, 2016, and 2017. During the campaigns, CTD profiling and water sampling were performed at 34 locations all over the lake. A total of 75 CTD profiles were obtained. Some biogeochemical and thermohaline parameters at the lake surface were also mapped at high horizontal resolution along the ship's track. In addition, thermistor chains were deployed at three mooring stations in the eastern littoral region of the lake, yielding 147-day-long records of temperature data. The measurements revealed that while the thermal state of the active layer, as well as so mebiogeochemical characteristics, were subject to significant interannual variability mediated by atmospheric forcing the haline structure of the entire lake was remarkably stable at the interannual scale. Our data do not confirm the reports of progressive warming of the deep Issyk-Kul waters as suggested in some previous publications. However, they do indicate a positive trend of salinity in the lake's interior over the last 3 decades. A noteworthy newly found feature is a weak but persistent salinity maximum below the thermocline at a depth of 70-120 m, from where salinity slightly decreased downwards. The data from the moored thermistor chains support the previously published hypothesis about the significant role of the submerged ancient riverbeds on the eastern shelf in advecting littoral waters into the deep portion of the lake during differential cooling period. We hypothesize that the less saline littoral water penetrating into the deep layers due to this mechanism is responsible for the abovementioned features of salinity profile, and we substantiate this hypothesis by estimates based on simple model assumptions. © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	Atmospheric structure; Mooring; Saline water; Thermistors; Atmospheric forcing; Horizontal resolution; Interannual variability; Littoral regions; Littoral waters; Simple modeling; Temperature data; Thermohaline structures; Lakes; active layer; atmospheric forcing; cooling; intertidal environment; mooring system; temperature; thermocline; thermohaline structure; warming; Kyrgyzstan; Lake Ysyk-Kol; Ysyk-Kol
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159835
作者单位	Zavialov, P.O., Shirshov Institute of Oceanology, Moscow, 117997, Russian Federation; Izhitskiy, A.S., Shirshov Institute of Oceanology, Moscow, 117997, Russian Federation; Kirillin, G.B., Leibnitz Institute of Freshwater Ecology and Inland Fisheries, Berlin, 12587, Germany; Khan, V.M., State Hydrometeorological Research Center, Moscow, 123242, Russian Federation; Konovalov, B.V., Shirshov Institute of Oceanology, Moscow, 117997, Russian Federation; Makkaveev, P.N., Shirshov Institute of Oceanology, Moscow, 117997, Russian Federation; Pelevin, V.V., Shirshov Institute of Oceanology, Moscow, 117997, Russian Federation; Rimskiy-Korsakov, N.A., Shirshov Institute of Oceanology, Moscow, 117997, Russian Federation; Alymkulov, S.A., International University of Innovative Technologies, Bishkek, 119991, Kyrgyzstan, Instutute of Physical and Technical Problems and Material Science, Bishkek, 720071, Kyrgyzstan; Zhumaliev, K.M., International University of Innovative Technologies, Bishkek, 119991, Kyrgyzstan
推荐引用方式 GB/T 7714	Zavialov P.O.,Izhitskiy A.S.,Kirillin G.B.,et al. New profiling and mooring records help to assess variability of Lake Issyk-Kul and reveal unknown features of its thermohaline structure[J],2018,22(12).
APA	Zavialov P.O..,Izhitskiy A.S..,Kirillin G.B..,Khan V.M..,Konovalov B.V..,...&Zhumaliev K.M..(2018).New profiling and mooring records help to assess variability of Lake Issyk-Kul and reveal unknown features of its thermohaline structure.Hydrology and Earth System Sciences,22(12).
MLA	Zavialov P.O.,et al."New profiling and mooring records help to assess variability of Lake Issyk-Kul and reveal unknown features of its thermohaline structure".Hydrology and Earth System Sciences 22.12(2018).