10 year mass balance by glaciological and geodetic methods of Glaciar Bahía del Diablo, Vega Island, Antarctic Peninsula

Marinsek, Sebastián; Ermolin, Evgeniy

doi:10.3189/2015aog70a958

Cited by 25 publications

(26 citation statements)

References 26 publications

(37 reference statements)

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“…Overall, the ice caps and glaciers of this region are one of the major sources of current sea level rise contributing 0.22 mm a −1 [22], compared to 0.47 ± 0.23 mm a −1 for the entire Greenland Ice Sheet between 1991-2015 [23]. Nonetheless, there is a large uncertainty concerning the volume change of glaciers in the Antarctic periphery, as the ground based measurements are relatively scarce [20,24]. King George Island is the largest island in the South Shetland Islands archipelago (Figure 2a,b).…”

Section: Introductionmentioning

confidence: 99%

Recent Deceleration of the Ice Elevation Change of Ecology Glacier (King George Island, Antarctica)

et al. 2017

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Abstract:Glacier change studies in the Antarctic Peninsula region, despite their importance for global sea level rise, are commonly restricted to the investigation of frontal position changes. Here we present a long term (37 years; 1979-2016) study of ice elevation changes of the Ecology Glacier, King George Island (62 • 11 S, 58 • 29 W). The glacier covers an area of 5.21 km 2 and is located close to the H. Arctowski Polish Antarctic Station, and therefore has been an object of various multidisciplinary studies with subject ranging from glaciology, meteorology to glacial microbiology. Hence, it is of great interest to assess its current state and put it in a broader context of recent glacial change. In order to achieve that goal, we conducted an analysis of archival cartographic material and combined it with field measurements of proglacial lagoon hydrography and state-of-art geodetic surveying of the glacier surface with terrestrial laser scanning and satellite imagery. Overall mass loss was largest in the beginning of 2000s, and the rate of elevation change substantially decreased between 2012-2016, with little ice front retreat and no significant surface lowering. Ice elevation change rate for the common ablation area over all analyzed periods (1979-2001-2012-2016)

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Section: Introductionmentioning

confidence: 99%

Recent Deceleration of the Ice Elevation Change of Ecology Glacier (King George Island, Antarctica)

et al. 2017

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“…With respect to the density of snow reported from the AP region (Table 2), we used the value of 500 kg m . The uncertainty range is set to ±90 kg m −3 to cover a midrange of density values that was measured on JRI Ice Cap (Aristarain and Delmas, 1981) and Vega Island (Marinsek and Ermolin, 2015). Point balances were extrapolated over the entire glacier area, allowing the calculation of the glacier-wide average surface mass balance.…”

Section: Surface Mass-balance Determinationmentioning

confidence: 99%

“…K −1 (Bintanja, 1995). Although the impact of regional cooling in the northeastern AP on surface mass balance has been reported recently (Marinsek and Ermolin, 2015;Oliva and others, 2017), the glacial response to changes in individual climate factors remains unresolved. Besides the changes in largescale circulation patterns (Marshall and others, 2013;Turner and others, 2016), the impact of local climate factors should be considered (van Wessem and others, 2015).…”

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confidence: 99%

“…The shift was confirmed subsequently based on the glaciological data from Bellingshausen Ice Dome on King George Island (SSI) (Mavlyudov, 2014). The regional validity of the change was proved by the mass-balance record from Bahía del Diablo Glacier on Vega Island (Marinsek and Ermolin, 2015), which represents the north-eastern part of the AP. The studies we refer to imply only 2 years with a positive mass balance, but the extended datasets for the Bellingshausen Ice Dome (Mavlyudov, 2016), Bahía del Diablo, Hurd and Johnsons glaciers (WGMS, 2017) as well as glaciological observations on Ecology and Sphinx glaciers on King George Island (Sobota and others, 2015) indicate ongoing surface mass gains.…”

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confidence: 99%

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Surface mass balance of small glaciers on James Ross Island, north-eastern Antarctic Peninsula, during 2009–2015

et al. 2018

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ABSTRACT. Two small glaciers on James Ross Island, the north-eastern Antarctic Peninsula, experienced surface mass gain between 2009 and 2015 as revealed by field measurements. A positive cumulative surface mass balance of 0.57 ± 0.67 and 0.11 ± 0.37 m w.e. was observed during the 2009-2015 period on Whisky Glacier and Davies Dome, respectively. The results indicate a change from surface mass loss that prevailed in the region during the first decade of the 21st century to predominantly positive surface mass balance after 2009/10. The spatial pattern of annual surface mass-balance distribution implies snow redistribution by wind on both glaciers. The mean equilibrium line altitudes for Whisky Glacier (311 ± 16 m a.s.l.) and Davies Dome (393 ± 18 m a.s.l.) are in accordance with the regional data indicating 200-300 m higher equilibrium line on James Ross and Vega Islands compared with the South Shetland Islands. The mean accumulation-area ratio of 0.68 ± 0.09 and 0.44 ± 0.09 determined for Whisky Glacier and Davies Dome, respectively, is similar to the value reported for Vega Island and within the range of typical values for high-latitude glaciers.

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“…Marinsek and Ermolin compared the elevation differences from kinematic GPS surveys on Bahía del Diablo glacier on the Antarctic Peninsula in 2000-2001 and 2010, finding that the geodetic mass balance calculated based on elevation change was close to the glaciological mass balance [45].…”

Section: Discussionmentioning

confidence: 96%

Latest Geodetic Changes of Austre Lovénbreen and Pedersenbreen, Svalbard

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et al. 2019

Remote Sensing

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Geodetic mass changes in the Svalbard glaciers Austre Lovénbreen and Pedersenbreen were studied via high-precision real-time kinematic (RTK)-global positioning system (GPS) measurements from 2013 to 2015. To evaluate the elevation changes of the two Svalbard glaciers, more than 10,000 GPS records for each glacier surface were collected every year from 2013 to 2015. The results of several widely used interpolation methods (i.e., inverse distance weighting (IDW), ordinary kriging (OK), universal kriging (UK), natural neighbor (NN), spline interpolation, and Topo to Raster (TTR) interpolation) were compared. Considering the smoothness and accuracy of the glacier surface, NN interpolation was selected as the most suitable interpolation method to generate a surface digital elevation model (DEM). In addition, we compared two procedures for calculating elevation changes: using DEMs generated from the direct interpolation of the RTK-GPS points and using the elevation bias of crossover points from the RTK-GPS tracks in different years. Then, the geodetic mass balances were calculated by converting the elevation changes to their water equivalents. Comparing the geodetic mass balances calculated with and without considering snow depth revealed that ignoring the effect of snow depth, which differs greatly over a short time interval, might lead to bias in mass balance investigation. In summary, there was a positive correlation between the geodetic mass balance and the corresponding elevation. The mass loss increased with decreasing elevation, and the mean annual gradients of the geodetic mass balance along the elevation of Austre Lovénbreen and Pedersenbreen in 2013–2015 were approximately 2.60‰ and 2.35‰, respectively. The gradients at the glacier snouts were three times larger than those over the whole glaciers. Additionally, some mass gain occurred in certain high-elevation regions. Compared with a 2019 DEM generated from unmanned aerial vehicle measurement, the glacier snout areas presented an accelerating thinning situation in 2015–2019.

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10 year mass balance by glaciological and geodetic methods of Glaciar Bahía del Diablo, Vega Island, Antarctic Peninsula

Cited by 25 publications

References 26 publications

Recent Deceleration of the Ice Elevation Change of Ecology Glacier (King George Island, Antarctica)

Recent Deceleration of the Ice Elevation Change of Ecology Glacier (King George Island, Antarctica)

Surface mass balance of small glaciers on James Ross Island, north-eastern Antarctic Peninsula, during 2009–2015

Latest Geodetic Changes of Austre Lovénbreen and Pedersenbreen, Svalbard

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