Comparison of Satellite Remote Sensing and Field Ground Observation Data for the Large Glaciers Retreat Study in Georgia
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Abstract
The results of the comparison of satellite remote sensing (SRS) data and ground-based observation (GBO) information on the large glaciers (Adishi, Shkhara and Gergeti) of Georgia are presented. From each satellite image, the location of the tip of the glacier's tongue was determined, a chronological order of the data was made, and the average rate of glacier retreat was calculated. Using SRS, the dynamics of the retreat of glaciers are studied based on the determination of individual places of movement of the tip of the glacier tongue. The dynamics of some large glaciers retreat based on the GBO data of the National Hydrometeorological Service (NEA) of Georgia is presented and is additionally used for quality assessment and quality control (QA/QC) of the results. The analyses show that based on SRS and GBO data the retreats of studied glaciers are nonlinear and by high confidence can be presented by a parabola curve. The comparison of SRS and GBO data shows that they are in good agreement with each other.
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References
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