Abstract
This study provides a map of glacial geomorphology of Mt. Asralt Khairkhan and Mt. Baga Khentii Saridag in Khentii Mountain Range in northeastern Mongolia. In the Khentii Mountain Range, only two types of glacial landforms including glacial cirques and terminal moraines are observed for the paleoglacial reconstructions of Mt. Asralt Khairkhan and Mt. Baga Khentii Saridag, and are mapped based on a mapping from 30 m resolution ASTER DEM and Landsat 8 satellite imagery. Spatial distribution of the glacial landforms indicates that the Khentii Mountain Range has experienced valley glaciations with small ice caps centered on the high mountains. The glacial cirques mark numerous glacial erosional landforms, while the terminal moraines indicate glacial advances and depositional landforms at outlets of valleys. Outer limits of these glacial landforms show their maximum glaciation of 10.0 km2 and 0.7 km2 for Mt. Asralt Khairkhan and Mt. Baga Khentii Saridag, respectively. This study demonstrates that spatial analysis of the glacial landforms is crucial for reviewing the paleoglacier extent. The map of the glacial geomorphology will be a key for further detailed studies in paleoglaciology and paleoclimate of the mountain range.
Highlights
Spatial distribution of the glacial landforms indicates that the Khentii Mountain Range has experienced valley glaciations with small ice caps centered on the high mountains
The purpose of this paper is to provide a reconstruction of paleoglaciers for Khentii Mountain Range in northeastern Mongolia
With the reconstruction with glacial landforms, large terminal moraines formed by glacial advances are mainly located at outlets of the glacial cirques
Summary
Reconstructing paleoglaciers is in efforts critical to understanding climate change in the past, glacier behavior and sensitivity to climate change, i.e., reconstructing the paleo record of the paleoglacier changes contributes to under-. Uuganzaya standing how glaciers vary with climate change, and provides opportunities to reconstruct paleoclimates. Mountain glaciers respond sensitively to local-to-regional patterns of climate change which are driven by global-scale processes. Paleoglacier evolution in high mountains is the key parameter for a reliable prediction of future glacier change. Determinations of paleoglacier extent during glacial maximums and paleoclimatic reconstructions are still a challenge
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