Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow
The article provides phenomenological and experimental arguments that ice sheet surface fluctuation in Antarctica is mediated by ice velocity and subglacial water flow. To understand this link we use temporal coherence to refer to the comparison between vertical profile and a shifted profile along t...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Nauka
2015-04-01
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| Series: | Лëд и снег |
| Subjects: | |
| Online Access: | https://ice-snow.igras.ru/jour/article/view/126 |
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| author | V. M. Kotlyakov L. N. Vasiliev A. B. Kachalin M. Yu. Moskalevsky A. S. Tyuflin |
| author_facet | V. M. Kotlyakov L. N. Vasiliev A. B. Kachalin M. Yu. Moskalevsky A. S. Tyuflin |
| author_sort | V. M. Kotlyakov |
| collection | DOAJ |
| description | The article provides phenomenological and experimental arguments that ice sheet surface fluctuation in Antarctica is mediated by ice velocity and subglacial water flow. To understand this link we use temporal coherence to refer to the comparison between vertical profile and a shifted profile along the repeat ICESat track. A profile shift due to ice velocity is determined from cross-correlation between initial and shifted profiles. Ice velocity induced fluctuation in surface elevation and deformation of the vertical profile. The degree of coherence indicates a decrease in similarity of moving vertical profiles and their deformation. The water flow beneath the ice sheet and over the subglacial lakes generates irregular rise and fall of the surface. Observations in area of Dome A and its slope have revealed such behavior of surface, where the surface is placid and ice velocity is measly 2–5 m/y. |
| format | Article |
| id | doaj-art-9806ea9b7f61415c823082dd1fdd679f |
| institution | DOAJ |
| issn | 2076-6734 2412-3765 |
| language | Russian |
| publishDate | 2015-04-01 |
| publisher | Nauka |
| record_format | Article |
| series | Лëд и снег |
| spelling | doaj-art-9806ea9b7f61415c823082dd1fdd679f2025-08-20T03:00:46ZrusNaukaЛëд и снег2076-67342412-37652015-04-0153451210.15356/2076-6734-2013-4-5-12120Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flowV. M. Kotlyakov0L. N. Vasiliev1A. B. Kachalin2M. Yu. Moskalevsky3A. S. Tyuflin4Institute of Geography, Russian Academy of Sciences, MoscowInstitute of Geography, Russian Academy of Sciences, MoscowInstitute of Geography, Russian Academy of Sciences, MoscowInstitute of Geography, Russian Academy of Sciences, MoscowInstitute of Geography, Russian Academy of Sciences, MoscowThe article provides phenomenological and experimental arguments that ice sheet surface fluctuation in Antarctica is mediated by ice velocity and subglacial water flow. To understand this link we use temporal coherence to refer to the comparison between vertical profile and a shifted profile along the repeat ICESat track. A profile shift due to ice velocity is determined from cross-correlation between initial and shifted profiles. Ice velocity induced fluctuation in surface elevation and deformation of the vertical profile. The degree of coherence indicates a decrease in similarity of moving vertical profiles and their deformation. The water flow beneath the ice sheet and over the subglacial lakes generates irregular rise and fall of the surface. Observations in area of Dome A and its slope have revealed such behavior of surface, where the surface is placid and ice velocity is measly 2–5 m/y.https://ice-snow.igras.ru/jour/article/view/126antarcticadeformationcoherenceice velocitysubsurface water flow |
| spellingShingle | V. M. Kotlyakov L. N. Vasiliev A. B. Kachalin M. Yu. Moskalevsky A. S. Tyuflin Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow Лëд и снег antarctica deformation coherence ice velocity subsurface water flow |
| title | Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow |
| title_full | Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow |
| title_fullStr | Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow |
| title_full_unstemmed | Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow |
| title_short | Relationship of surface elevation changes of the Antarctic ice sheet with ice movement and subglacial water flow |
| title_sort | relationship of surface elevation changes of the antarctic ice sheet with ice movement and subglacial water flow |
| topic | antarctica deformation coherence ice velocity subsurface water flow |
| url | https://ice-snow.igras.ru/jour/article/view/126 |
| work_keys_str_mv | AT vmkotlyakov relationshipofsurfaceelevationchangesoftheantarcticicesheetwithicemovementandsubglacialwaterflow AT lnvasiliev relationshipofsurfaceelevationchangesoftheantarcticicesheetwithicemovementandsubglacialwaterflow AT abkachalin relationshipofsurfaceelevationchangesoftheantarcticicesheetwithicemovementandsubglacialwaterflow AT myumoskalevsky relationshipofsurfaceelevationchangesoftheantarcticicesheetwithicemovementandsubglacialwaterflow AT astyuflin relationshipofsurfaceelevationchangesoftheantarcticicesheetwithicemovementandsubglacialwaterflow |