Surface-elevation changes and mass balance of the Academy of Sciences Ice Cap, Severnaya Zemlya
We have determined the surface-elevation change rates of the Academy of Sciences Ice Cap, Severnaya Zemlya, Russian Arctic, for two different periods: 2004–2016 and 2012/2013–2016. The former was calculated from differencing of ICESat and ArcticDEM digital elevation models, while the latter was obta...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | Russian |
| Published: |
Nauka
2020-04-01
|
| Series: | Лëд и снег |
| Subjects: | |
| Online Access: | https://ice-snow.igras.ru/jour/article/view/781 |
| _version_ | 1797878182739705856 |
|---|---|
| author | F. J. Navarro P. Sánchez-Gámez A. F. Glazovsky C. Recio-Blitz |
| author_facet | F. J. Navarro P. Sánchez-Gámez A. F. Glazovsky C. Recio-Blitz |
| author_sort | F. J. Navarro |
| collection | DOAJ |
| description | We have determined the surface-elevation change rates of the Academy of Sciences Ice Cap, Severnaya Zemlya, Russian Arctic, for two different periods: 2004–2016 and 2012/2013–2016. The former was calculated from differencing of ICESat and ArcticDEM digital elevation models, while the latter was obtained by differencing two sets of ArcticDEM digital elevation models. From these surface-elevation change rates we obtained the geodetic mass balance, which was nearly identical for both periods, at −1,72±0,67 Gt a−1, equivalent to −0,31±0,12 m w.e. a−1 over the whole ice cap area. Using an independent estimate of frontal ablation for 2016−2017 of −1,93±0,12 Gt a−1 (−0,31±0,12 m w.e. a−1), we get an estimate of the climatic mass balance not significantly different from zero, at 0,21±0,68 Gt a−1 (0,04±0,13 m w.e. a−1), which agrees with the near-zero average balance at a decadal scale observed during the last four decades. Making an observationally-based assumption on accumulation rate, we estimate the current total ablation from the ice cap, and its partitioning between frontal ablation, dominated by calving (~54%) and climatic mass balance, mostly surface ablation (~46%). |
| first_indexed | 2024-04-10T02:28:38Z |
| format | Article |
| id | doaj.art-d8fd38d9af304d5c829cc059d6bb6155 |
| institution | Directory Open Access Journal |
| issn | 2076-6734 2412-3765 |
| language | Russian |
| last_indexed | 2024-04-10T02:28:38Z |
| publishDate | 2020-04-01 |
| publisher | Nauka |
| record_format | Article |
| series | Лëд и снег |
| spelling | doaj.art-d8fd38d9af304d5c829cc059d6bb61552023-03-13T08:01:20ZrusNaukaЛëд и снег2076-67342412-37652020-04-01601294110.31857/S2076673420010021598Surface-elevation changes and mass balance of the Academy of Sciences Ice Cap, Severnaya ZemlyaF. J. Navarro0P. Sánchez-Gámez1A. F. Glazovsky2C. Recio-Blitz3Высшая техническая школа инженеров телекоммуникаций Мадридского политехнического университетаВысшая техническая школа инженеров телекоммуникаций Мадридского политехнического университетаИнститут географии РАНВысшая техническая школа инженеров телекоммуникаций Мадридского политехнического университетаWe have determined the surface-elevation change rates of the Academy of Sciences Ice Cap, Severnaya Zemlya, Russian Arctic, for two different periods: 2004–2016 and 2012/2013–2016. The former was calculated from differencing of ICESat and ArcticDEM digital elevation models, while the latter was obtained by differencing two sets of ArcticDEM digital elevation models. From these surface-elevation change rates we obtained the geodetic mass balance, which was nearly identical for both periods, at −1,72±0,67 Gt a−1, equivalent to −0,31±0,12 m w.e. a−1 over the whole ice cap area. Using an independent estimate of frontal ablation for 2016−2017 of −1,93±0,12 Gt a−1 (−0,31±0,12 m w.e. a−1), we get an estimate of the climatic mass balance not significantly different from zero, at 0,21±0,68 Gt a−1 (0,04±0,13 m w.e. a−1), which agrees with the near-zero average balance at a decadal scale observed during the last four decades. Making an observationally-based assumption on accumulation rate, we estimate the current total ablation from the ice cap, and its partitioning between frontal ablation, dominated by calving (~54%) and climatic mass balance, mostly surface ablation (~46%).https://ice-snow.igras.ru/jour/article/view/781арктикабаланс массы ледникаизменения высоты ледниковой поверхностиледниковый куполсеверная земля |
| spellingShingle | F. J. Navarro P. Sánchez-Gámez A. F. Glazovsky C. Recio-Blitz Surface-elevation changes and mass balance of the Academy of Sciences Ice Cap, Severnaya Zemlya Лëд и снег арктика баланс массы ледника изменения высоты ледниковой поверхности ледниковый купол северная земля |
| title | Surface-elevation changes and mass balance of the Academy of Sciences Ice Cap, Severnaya Zemlya |
| title_full | Surface-elevation changes and mass balance of the Academy of Sciences Ice Cap, Severnaya Zemlya |
| title_fullStr | Surface-elevation changes and mass balance of the Academy of Sciences Ice Cap, Severnaya Zemlya |
| title_full_unstemmed | Surface-elevation changes and mass balance of the Academy of Sciences Ice Cap, Severnaya Zemlya |
| title_short | Surface-elevation changes and mass balance of the Academy of Sciences Ice Cap, Severnaya Zemlya |
| title_sort | surface elevation changes and mass balance of the academy of sciences ice cap severnaya zemlya |
| topic | арктика баланс массы ледника изменения высоты ледниковой поверхности ледниковый купол северная земля |
| url | https://ice-snow.igras.ru/jour/article/view/781 |
| work_keys_str_mv | AT fjnavarro surfaceelevationchangesandmassbalanceoftheacademyofsciencesicecapsevernayazemlya AT psanchezgamez surfaceelevationchangesandmassbalanceoftheacademyofsciencesicecapsevernayazemlya AT afglazovsky surfaceelevationchangesandmassbalanceoftheacademyofsciencesicecapsevernayazemlya AT crecioblitz surfaceelevationchangesandmassbalanceoftheacademyofsciencesicecapsevernayazemlya |