Study of Lake Baikal Ice Cover from Radar Altimetry and In-Situ Observations

被引：9

作者：

Kouraev, Alexei V. ^{[1
,2
,3
]}

Zakharova, Elena A. ^{[2
,4
]}

Remy, Frederique ^{[4
]}

Suknev, Andrey Ya. ^{[5
]}

机构：

[1] Univ Toulouse, LEGOS, Toulouse, France

[2] State Oceanog Inst, St Petersburg Branch, St Petersburg, Russia

[3] Tomsk State Univ, Tomsk 634050, Russia

[4] CNRS, Lab Etud Geophys & Oceanog Spatiale, Toulouse, France

[5] Great Baikal Trail Buryatia, Ulan Ude, Russia

来源：

MARINE GEODESY | 2015年 / 38卷

关键词：

Ice cover; Lake Baikal; radar altimetry; in situ observations; ARAL SEAS; SATELLITE;

D O I：

10.1080/01490419.2015.1008155

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Comparison of ENVISAT and SARAL missions data shows that AltiKa can be successfully used for ice discrimination methodology and extension of ice conditions time series. Due to shorter wavelength and large bandwidth (480MHz) which leads to a higher sensitivity to different surface conditions, AltiKa shows more clearly the separation between open water and various ice types. We observe significant decrease of backscatter (25-30dB) in late spring for both ENVISAT and SARAL and discuss it in the context of ice metamorphism. There is a clear need to continue and expand our dedicated field studies of lake Baikal ice cover to better assess influence of ice structure on altimetric signal.

引用

页码：477 / 486

页数：10

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