IASC Working Groups Workshop, 12-14 January 2011, Potsdam

International Science Initiative in the Russian Arctic (ISIRA)

Recent changes of glaciers on Franz Josef Land from remote sensing data

postgraduate student Igor Sokolov Department of Glaciology Institute of Geography Russian Academy of Sciences e-mail:[email protected] Study area

Area of interest – Franz Josef Land

d an sl l I el B m ha ra G

I Windy Ice Cap m G p l a r e c i t e u M r o i u G lk s la y c ie r 71.1% Tyndall nd Ice Cap La k ze ilc W Renown Glacier

92.1%

Moscow Ice Cap d an sl ice free area l I al H glaciated area S o G n la k c la ie r r

93.8%

0 10 20 40 60 80 km (from The World Atlas of snow and ice resourses,1997)

n Glaciated area is 13 735 km² (85% of all archipelago area) R a t i o n a l e s

n Data used n Approaches n Preliminary results n Conclusions

Data used

1. Digital topographic maps of Franz Josef Land (scale 1:200 000, based on aerial photography survey 1952-1953)

2. Glacier Inventory of the USSR (1965)

3. Remote sensing data: satellite images ASTER (2006, 3 images), ASTER GDEM, SPOT DEM (2007), Landsat 5 TM (2006, 2 images) Approaches

n Interpretation of satellite images n Mapping of outlines of the glaciers n Comparison new outlines from satellite images with Glacier Inventory of the USSR (1965) n Mapping of ice divides and ice-catchment basins using DEMs of ice surfaces (digital topographic maps (1:200000), ASTER GDEM, ASTER DEM, Landsat 5 TM)

Preliminary results I

Hall Island - Ice divides and ice-catchment basins

~1:400 000 ~1:400 000 Preliminary results I Wilczek Land - Ice divides and ice-catchment basins

~1:450 000 ~1:450 000 Preliminary results I Graham Bell Islamd - Ice divides and ice-catchment basins

~1:500 000 ~1:500 000 Preliminary results II 1) Hall Island - Glacier Area Change

Outlines from topographic maps (1952-1953) Outlines from satellite image (ASTER,2006)

Number of the glacier from 18/008 Glacier Inventory(1965)/ New Number(ASTER,2006) ± 0 1,5 3 6 km Preliminary results II 2) Glacier Area Change – Hall Island

Outlines from topographic maps (1952-1953) Outlines from satellite image (ASTER,2006)

Number of the glacier from 12/004 Glacier Inventory(1965)/ ± New Number(ASTER,2006) 0 1,5 3 6 km Preliminary results II 3) Glacier Area Change – Wilczek Land ±

Outlines from topographic maps (1952-1953) Outlines from satellite image (ASTER,2006)

Number of the glacier from 12/004 Glacier Inventory(1965)/ New Number(ASTER,2006)

0 1,5 3 6 km Preliminary results II 4) Glacier Area Change – Wilczek Land ±

Outlines from topographic maps (1952-1953) Outlines from satellite image (ASTER,2006)

Number of the glacier from 12/004 Glacier Inventory(1965)/ New Number(ASTER,2006)

0 1,5 3 6 km Preliminary results II 5) Glacier Area Change – Graham Bell Island ±

Outlines from topographic maps (1952-1953) Outlines from satellite image (ASTER,2006)

Number of the glacier from 12/004 Glacier Inventory(1965)/ New Number(ASTER,2006)

0 1,5 3 6 km Total areas

Islands Glacier New areas S,% ΔS, Inventory of from satellite km² the USSR images (2006) (1965) S, km² S, km² Hall Islands 921,5 863,9 -6% 57,6

Wilczek Land 1891,8 1817,7 -3,9% 74,1

Graham Bell 1214,7 1165,1 -4,1% 49,6 Island Conclusions and future plans

n Glacier changes on Franz Josef Land are existing and should be explored n Need of the new ”Glacier Inventory” of the Russian Arctic archipelago - Franz Josef Land n Need of integrated methods in scientific research interpretation of glaciers n Comparison volumes of glaciers from radar aerial survey (1994,2006-2008) with new volumes using ICESat profiles n Introduction of this research work as prospective study to understand recent state of glaciers on Franz Josef Land Thank you for your attention!