Institute of Geography Russian Academy of Sciences

Using of DEM for reconstructions of mountain glaciers (Central Caucasus and Polar Ural) Irina Bushueva

Toulouse - 2010

Catalog of glacier USSR (1957)

Glacier Aleshkova (the most northern on Polar Ural)

GLIMS project

Reconstruction of Kashkatash glacier

Aerial photograph (1957) not orthorectified image

orthorectified image

Orthorectification of: Glacier forefield

Glacier tongue

Altitude of end of glacier tongue map ASTER-map right right part part

year year 1840s 1840s 187018701880s 1880s 187018701880s 1880s 187018701880s 1880s 1890 1890 1911 1911 1927 1927 1932 1932 1939 1939 1949 1949 1951 1951 1956 1956 1957 1957 1965 1965 1971 1971 1987 1987 2006 2006 2008 2008

2295,43 3,8 2311,39 -7,8 2375,49 -4,86 2384,51 -5,85 2407,7 -7,73 2427,45 -8,94 2442,32 -13,53 2412,47 -7,64 2422,59 -8,04 2435,91 -11,6 2426,6 -8,76 2454,31 -16,11 2474,4 -16,54

central central

left left part part

ASTER ASTER-GDEM right right part part

central central

left left part part

GDEM GDEM-map right right part part

central central

part part

part part

part part

2175,06 -2,72

2172,34 10,69

2161,65 -13,41

2200,61 -10,81

2189,8 7,3

2182,5 -18,11

2212,65 -9,48

2203,17 10,74

2192,43 -20,22

2229,12 1,02 2249,1 9,58 2305,85 -9,02 2313,07 -12,88 2365,01 1 2369,25 0,72 2422,12 -3,25 2428,24 -4,62 2441,73 -8,5 2435,6 -6,41 2446,22 -10,1 2441,44 -8,44 2423,22 -3,55 2504,17 -19,99 2506,82 -19,88

2230,14 20,3 2258,68 9,94 2307,97 -11,92 2299,23 -11,46 2296,83 -1,51 2318,26 2300,19 2303,59 -14,41 -31,72 -13,61 2370,63 2366,01 2327,76 -8,92 -21,37 -18,68 GDEM and DGPS 2378,66 -24,86 2369,97 -18,05 • GDEM is always 2418,87 2354,3 2399,97 11 -22,07 -26,47 than data from DGPS. 2418,51 2423,62 2350,8 9,88 -27,87 -28,8 2428,79 2433,23 2363,32 • Arithmetic 11,15 -29,67 average -21,43 2429,19 2391,58 2404,83 m. 9,04 -19,98 -24,43 2414,55 2436,12 2423,81 4,17 -25,19 -23,97 2424,31 2433 2409,66 6,38 -31,8 -21,41 2417,84 2381,28 7,69 -27,4 2419,67 -26,97 2438,2 2458,91 2484,18 -6,45 -26,6 -31,02 2467,97 -8,78 2457,86 -35,43 2486,94 -32,29

2296,05 2310,69 8,47 15,26 2303,85 2335,31 -3,39 23,92 2392 2318,84 -18,46 16,51 2403,52 19,01 higher 2365,3 2422,04 -14,13 14,34 2446,38 2360,68 -18,4 18,93 2374,47 is 22 2458,46 -16,45 16,14 2400,62 2424,81 -7,74 12,34 2439,74 2427,98 -2,87 17,15 2416,04 -8,96 2456,11 20,2 2445,24 2388,97 -5,8 18,64 2464,8 2452,46 -11,6 10,49 2459,19 -18,96 2493,29 18,89

2209,84 -19,28 2248,74 -0,36 2298,34 -7,51 2313,8 0,73 2384,69 19,68 2388,02 18,77 2445,34 23,22 2452,42 24,18 2454,66 12,93 2453,62 18,02 2460,09 13,87 2454,41 12,97 2446,64 23,42 2515,2 11,03 2519,23 12,41

left left part part

2287,58 -20,39 2307,24 -11,02 2337,3 9,54 2379,43 25,13 2379,08 28,28 2390,92 27,6 2408,36 16,78 2430,85 7,04 2425 15,34 2394,77 13,49 2464,06 5,15 2478,15 10,18

Repeated photograph 1911

2009

Repeated photograph

Repeated photograph 1911

2009

Thank you for attention