Ağrı ice cap is the biggest glacier in Turkey, but there are only a few published studies on Ağrı glacier. Many of them are focused on the spatial changes of the glacier detected by temporal data. In addition to the spatiotemporal changes of glacier, the main contribution of this study is to investigate the relation between Glacier Surface Temperature Anomalies (GSTA) and glacier retreat. The study was conducted in two steps by using Landsat TM 4–5 and Landsat 8 Oli satellite data. In the first step, the glacier boundaries were delineated with both band ratio technique and Normalize Difference Snow Index for each year and the spatiotemporal analysis is performed. In the second step, GSTA were calculated by using thermal infrared bands, and the areas with high anomalies were compared with the melting areas in the sequential years. According to results, a loss of 39% of glacier in the period of 28 years was determined. Furthermore, the relationship between GSTA and melting areas was exposed in both short- and long-term analysis. Hence, GSTA should be in consideration as a vital specification in the prediction of melting zones studies.

中文翻译：

---

冰川表面温度对阿格里山冰川退缩的影响

Ağrı 冰盖是土耳其最大的冰川，但关于 Ağrı 冰川的已发表研究很少。他们中的许多人专注于通过时间数据检测到的冰川的空间变化。除了冰川的时空变化，本研究的主要贡献是研究冰川表面温度异常（GSTA）与冰川退缩的关系。该研究使用 Landsat TM 4-5 和 Landsat 8 Oli 卫星数据分两步进行。在第一步中，冰川边界用每年的带比技术和归一化差异雪指数划定，并进行时空分析。第二步，利用热红外波段计算GSTA，将高异常区与连续年份的融化区进行比较。根据结果​​，确定在 28 年的时间里，冰川损失了 39%。此外，在短期和长期分析中都暴露了 GSTA 与熔化面积之间的关系。因此，GSTA 应被视为熔融区研究预测中的重要规范。