Dubina “Ice cover of the Okhotsk Sea: a study using ENVISAT

• Main Authors: D. V. Darkin, L. M. Mitnik, V. A. Dubina
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Asar; Okhotsk; okhotsk sea
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.380.1403; http://earth.esa.int/workshops/salzburg04/papers_posters/4P13_6_darkin_175.pdf

The datasets consisting of over 50 Envisat ASAR and ERS-2 SAR precision and quick-look images taken in 1999–2004, as well as large quantity of ADEOS-II AMSR and Aqua AMSR-E brightness temperatures TBs in the range from 6.7 to 89 GHz taken in 2002-2004. allowed us to trace ice cover evolution in the Okhotsk Sea, delineate open water from ice formations and reveal fast changes in the marginal ice zone. The main attention is given to the time interval 6-12 February 2003. ASAR images for 8 February 2003 are analyzed and compared using fractal dimension. Interpretations of radar signatures are supported using close in time NOAA AVHRR visible and infrared images, surface analysis maps and ice condition maps. Variations of backscatter contrasts of Envisat ASAR and ERS-2 SAR images are investigated through analysis of fractal dimension curve. 1.