Assessment of area, volume and ELA of glacial systems in Northeast Russia from satellite images in the beginning of XXI century

• Published in: Ice and Snow
• Main Authors: M. Ananicheva D., М. Ананичева Д.
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: IGRAS 2015
• Subjects: Aspect of glacier;equilibrium line altitude;glacier area;morphological type;space image;the USSR Glacier Inventory; Высота границы питания;Каталог ледников CCCР;космический снимок;морфологический тип;площадь ледника;экспозиция ледника; Ela; Suntar; Chukotka; glacier; Koryak
• Online Access: https://ice-snow.igras.ru/jour/article/view/22; https://doi.org/10.15356/2076-6734-2014-1-35-47

The paper compares remotely sensed glacier inventories of the Byrranga, Suntar-Khayata, and Chersky ranges (2003), Koryak Highland and Chukotka mountains (2008) with data from the Inventory of Glaciers of the USSR (1945–1985). We studied changes in glacier area since the Inventory, which was primarily based on aerial photos and field research. The glaciers have been classified by orientation (aspect) and morphological type. Overall the glacierization of the Chersky Range (1970–2003), Suntar-Khayata (1945–2003), Byrranga (1967–2003), Koryak Highland (1950–2003) and Meynypilginsky Range (1984–2008) reduced by about 30, 20, 15, 60 (debatable value) and 25% respectively due to summer temperature rise. Calculation of glacier volumes for the dates indicated in the USSR Glacier Inventory and satellite imagery: during this period in sum for 5 studied glacier regions the area, covered by ice, has decreased by 225.2 km², and ice volume – by 8.7 Gtg. Construction of spatial patterns (maps) of current ELA for 3 different by climate mountain regions – the Suntar-Khayata Mountains– Chersky Range, and Meynypilgynsky Range ( North Far East), showed that despite of retreat of the glaciers, the mean ELA change for the first studied region is not large compared with the data from the Glacier Inventory (100 m ), and significant for the second (100–150 m). Выполнено сравнение площади ледников гор Бырранга, Сунтар-Хаята, хр. Черского (2003 г.), Корякского нагорья и Мейныпильгынского хребта (2008 г.), полученной по космическим снимкам, с соответствующими величинами из Каталога ледников СССР (данные 1945–1985 гг.). Рассчитана разность объёмов ледников между состоянием при каталогизации и началом ХХI в. С помощью цифровых моделей рельефа по снимкам определены верхняя и нижняя точки современных ледников и рассчитана высота границы их питания на районы гор Сунтар-Хаята, хр. Черского и Мейныпильгынского хребта (северо-восток Корякии); построены картосхемы высоты границы питания современных ледников для северо-востока Сибири (на ...