Mr. Jeong-Cheol Kim Profile

Jeong-Cheol Kim

at Univ of Seoul

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Proceedings Article | 8 November 2014 Paper

Snow cover correlation between Mt. Villarrica and Mt. Lliama in Chile

Jeong-Cheol Kim, Sung-Hwan Park, Hyung-Sup Jung

Proceedings Volume 9260, 92603N (2014) https://doi.org/10.1117/12.2069102

KEYWORDS: Snow cover, Landsat, Atmospheric corrections, Sensors, Short wave infrared radiation, Image resolution, Atmospheric modeling, Reflectivity, Clouds, Earth observing sensors

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The Southern Volcanic Zone (SVZ) of Chile consists of many volcanoes, and all of the volcanoes are covered with snow at the top of mountain. Monitoring snow cover variations in these regions can give us a key parameter in order to understand the mechanisms of volcanic activity. In this study, we investigate on the volcanic activity and snow cover interaction from snow cover area mapping, snow-line extraction. The study areas cover Mt. Villarrica and Mt. Llaima, Chile. Both of them are most active volcanos in SVZ. Sixty Landsat TM and Landsat ETM+ images are used for observing snow cover variations of Mt. Villarrica and Mt. Llaima, spanning the 25 years from September 1986 to February 2011. Results show that snow cover area between volcanic activity and non-activity are largely changed from 42.84 km2 to 13.41 km2, temporarily decreased 79% at the Mt. Villarrica and from 28.98 km2 to 3.82 km2, temporarily decreased 87% at the Mt. Villarrica. The snow line elevation of snow cover retreated by approximately 260 m from 1,606m to 1,871 m at the Mt. Villarrica, approximately 266m from 1,741m to 2,007m at the Mt. Llaima. The results show that there are definitely correlations between snow cover and volcanic activity.

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