10:00 AM - 10:15 AM
[ACC25-05] Evolution of supraglacial ponds at the southern Inylchek Glacier, Kyrgyz Republic
Keywords:debris-covered, supraglacial ponds, englacial conduit
A debris-covered glacier has ablation zone covered by debris produced from the rock walls around the glacier. Supraglacial lake develops on the debris glacier. Some supraglacial lakes are connected by englacial conduits. They appear and expand when the canals are closed, and a large drainage occurs from connected glacial lakes simultaneously when the canals are opened. (Sakurai et al., 2020).
Recently, outburst floods from several supraglacial lakes have caused disasters in the Asian mountains, and damages in the downstream villages. An increase in supraglacial lake which assumed to be in response to a warmer climate and glacier surface lowering, has been observed in recent decades in the Tien Shan and eastern Himalaya (Wang et al., 2013). The disasters associated with outburst floods from supraglacial lakes will be increasing in these areas.
It is important to assess the likelihood and magnitude of such events for flood risk management. In most cases, this requires an understanding of the drainage scale impounded in the lake, the structural of network and development process of the basin (Cook and Quincey, 2015).
Therefore, in this study, we investigated the topographical characteristics of the lake basin and its topographical changes using satellite images and UAV aerial images.
Recently, outburst floods from several supraglacial lakes have caused disasters in the Asian mountains, and damages in the downstream villages. An increase in supraglacial lake which assumed to be in response to a warmer climate and glacier surface lowering, has been observed in recent decades in the Tien Shan and eastern Himalaya (Wang et al., 2013). The disasters associated with outburst floods from supraglacial lakes will be increasing in these areas.
It is important to assess the likelihood and magnitude of such events for flood risk management. In most cases, this requires an understanding of the drainage scale impounded in the lake, the structural of network and development process of the basin (Cook and Quincey, 2015).
Therefore, in this study, we investigated the topographical characteristics of the lake basin and its topographical changes using satellite images and UAV aerial images.