干旱区生态环境知识资源中心(Arid): Breakthrough of Lake Progress (East Antarctica): a phenomenological model and approaches to assessing the characteristics of a flash flood

Arid

DOI	10.31857/S2076673420040065
	Breakthrough of Lake Progress (East Antarctica): a phenomenological model and approaches to assessing the characteristics of a flash flood
	Pryakhina, G., V; Chetverova, A. A.; Grigorieva, S. D.; Boronina, A. S.; Popov, S., V
通讯作者	Pryakhina, GV
来源期刊	LED I SNEG-ICE AND SNOW
ISSN	2076-6734
EISSN	2412-3765
出版年	2020
卷号	60 期号:4 页码:613-622
英文摘要	On January 14, 2019, a breakthrough of water masses occurred on the Lake Progress (the oasis of the Larsemann hills, East Antarctica) with the formation of a flash flood. During the summer field seasons of the 63rd and 64th Russian Antarctic Expeditions (2017-2019), comprehensive hydrological, GPR and geodetic surveys were conducted in this area to ensure the safety of transport operations. The results of field measurements and calculations based on mathematical modeling of the breakthrough flood from the Lake are presented. The purpose of this study was to compare field observations and model calculations of the breakthrough flood and then to verify the existing model of Yu.B. Vinogradov on real data, since detailed observations of breakthrough floods of lakes of the Antarctic oases have not been previously carried out. The results of complex hydrological and geophysical investigations of LH73-Progress-Sibtorp lake system focused on areas where lake outburst are possible (snow-ice dams) made possible to formulate phenomenological model of the outburst process. It was emphasized that the lake water was discharged through a tunnel developed in the snow-ice dam, which subsequently evolved into a real riverbed. The maximum water discharge was formed approximately in 7.5 h after the start of the outflow, and it was estimated 5.4 m(3)s(-1) according to the in-situ measurements, and 4.94 m(3)s(-1) - by the model. The calculated volume of the flood is 76 320 m(3). The differences between the model and in-situ measurements are about 9% that can be explained by the fact that the time of water retention by the snow-ice dam is not considered in the model.
英文关键词	Antarctic lakes East Antarctica geophysics hydrograph modeling hydrology outburst/breakthrough flood Progress Station
类型	Article
语种	Russian
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000588489900012
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334732
作者单位	[Pryakhina, G., V; Chetverova, A. A.; Grigorieva, S. D.; Boronina, A. S.; Popov, S., V] St Petersburg State Univ, St Petersburg, Russia; [Chetverova, A. A.; Grigorieva, S. D.] Arctic & Antarctic Res Inst, St Petersburg, Russia; [Popov, S., V] Polar Marine Geosurvey Expedit, St Petersburg, Russia
推荐引用方式 GB/T 7714	Pryakhina, G., V,Chetverova, A. A.,Grigorieva, S. D.,et al. Breakthrough of Lake Progress (East Antarctica): a phenomenological model and approaches to assessing the characteristics of a flash flood[J],2020,60(4):613-622.
APA	Pryakhina, G., V,Chetverova, A. A.,Grigorieva, S. D.,Boronina, A. S.,&Popov, S., V.(2020).Breakthrough of Lake Progress (East Antarctica): a phenomenological model and approaches to assessing the characteristics of a flash flood.LED I SNEG-ICE AND SNOW,60(4),613-622.
MLA	Pryakhina, G., V,et al."Breakthrough of Lake Progress (East Antarctica): a phenomenological model and approaches to assessing the characteristics of a flash flood".LED I SNEG-ICE AND SNOW 60.4(2020):613-622.