Physiography and tectonic setting of the subglacial lake district between Vostok and Belgica Subglacial Highlands (Antartica)
We present the interpretation of 11 radio echo-sounding (RES) missions carried out over the Vostok–Dome Concordia region during the Italian Antarctic expeditions in the period 1995– 2001. The extension and the density of the radar data in the surveyed area allowed to reconstruct a reliable subglacia...
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| Format: | Article in Journal/Newspaper |
| Language: | English |
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2006
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| Subjects: | |
| Online Access: | http://hdl.handle.net/2122/2534 |
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ftingv:oai:www.earth-prints.org:2122/2534 |
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openpolar |
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Open Polar |
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Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
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ftingv |
| language |
English |
| topic |
Antarctica modelling 01. Atmosphere::01.01. Atmosphere::01.01.04. Processes and Dynamics |
| spellingShingle |
Antarctica modelling 01. Atmosphere::01.01. Atmosphere::01.01.04. Processes and Dynamics Tabacco, I. Cianfarra, P. Forieri, A. Salvini, F. Zirizzotti, A. Physiography and tectonic setting of the subglacial lake district between Vostok and Belgica Subglacial Highlands (Antartica) |
| topic_facet |
Antarctica modelling 01. Atmosphere::01.01. Atmosphere::01.01.04. Processes and Dynamics |
| description |
We present the interpretation of 11 radio echo-sounding (RES) missions carried out over the Vostok–Dome Concordia region during the Italian Antarctic expeditions in the period 1995– 2001. The extension and the density of the radar data in the surveyed area allowed to reconstruct a reliable subglacial morphology and to identify four relevant morphological structures namely: the Aurora trench, the Concordia trench, the Concordia ridge and the South Hills. These structures show evidence compatible with the presence of tectonic features. Morphological considerations indicate their development in Cenozoic time. Hybrid cellular automata (HCA)- based numerical modelling allowed to justify a possible role played by the tectonics of the Aurora and Concordia trench evolution. This was accomplished by matching the bed profiles along opportunely projected sections with the modelled surfaces as derived by the activity of normal faults with variable surfaces within the continental crust. The Vostok–Dome C region is characterized by a large number of subglacial lakes. From the analysis of basal reflected power echo, we identified 14 new lakes and obtained information about their physiography as well as their possible relations with tectonics.We propose a grouping of subglacial lakes on the base of their physiography and geological setting, namely relief lakes, basin lakes and trench lakes. Relief lakes located in the Belgica subglacial highlands and are characterized by sharp and steep symmetric edges, suggesting a maximum water depth of the order of 100 m. Their origin may well relate to localized, positive geothermal flux anomalies. Basin lakes located in the Vincennes subglacial basin and are characterized by wider dimension that allow the development of well-defined, flat ice surface anomalies. Trench lakes characterize the Aurora and Concordia trenches as the possible effect of normal fault activity. Key words: Antarctica, HCA modelling, radio echo sounding, subglacial Published (1029-1040) JCR Journal reserved |
| author2 |
Tabacco, I.; Universit`a degli Studi di Milano, Dip. Scienze della Terra, Sez. Geofisica, Cianfarra, P.; Universit`a degli Studi Roma Tre, Dip. Scienze Geologiche, Forieri, A.; Universit`a degli Studi di Milano, Dip. Scienze della Terra, Sez. Geofisica, Salvini, F.; Universit`a degli Studi Roma Tre, Dip. Scienze Geologiche, Zirizzotti, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia Universit`a degli Studi di Milano, Dip. Scienze della Terra, Sez. Geofisica, Universit`a degli Studi Roma Tre, Dip. Scienze Geologiche, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia |
| format |
Article in Journal/Newspaper |
| author |
Tabacco, I. Cianfarra, P. Forieri, A. Salvini, F. Zirizzotti, A. |
| author_facet |
Tabacco, I. Cianfarra, P. Forieri, A. Salvini, F. Zirizzotti, A. |
| author_sort |
Tabacco, I. |
| title |
Physiography and tectonic setting of the subglacial lake district between Vostok and Belgica Subglacial Highlands (Antartica) |
| title_short |
Physiography and tectonic setting of the subglacial lake district between Vostok and Belgica Subglacial Highlands (Antartica) |
| title_full |
Physiography and tectonic setting of the subglacial lake district between Vostok and Belgica Subglacial Highlands (Antartica) |
| title_fullStr |
Physiography and tectonic setting of the subglacial lake district between Vostok and Belgica Subglacial Highlands (Antartica) |
| title_full_unstemmed |
Physiography and tectonic setting of the subglacial lake district between Vostok and Belgica Subglacial Highlands (Antartica) |
| title_sort |
physiography and tectonic setting of the subglacial lake district between vostok and belgica subglacial highlands (antartica) |
| publishDate |
2006 |
| url |
http://hdl.handle.net/2122/2534 |
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ENVELOPE(129.000,129.000,-76.500,-76.500) ENVELOPE(177.649,177.649,51.951,51.951) ENVELOPE(122.000,122.000,-73.000,-73.000) |
| geographic |
Antarctic Belgica Subglacial Highlands New Lakes Vincennes Subglacial Basin |
| geographic_facet |
Antarctic Belgica Subglacial Highlands New Lakes Vincennes Subglacial Basin |
| genre |
Annals of Glaciology Antarc* Antarctic Antarctic Science Antarctica Antarctica Journal antartic* Journal of Glaciology |
| genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctic Science Antarctica Antarctica Journal antartic* Journal of Glaciology |
| op_relation |
Geophys. J. Int. Bell, R.E., Studinger, M., Tikku, A.A., Clarke, G.K.C., Gutner, M.M. & Meertens, C., 2002. Origin and fate of Lake Vostok water frozen to the base of the East Antarctic ice sheet, Nature, 417, 307–310. Bogorodky,V.V., Bentley, C.R.&Gudmandsen, P.E., 1985. Radioglaciology, D.reidil Publishing Company, Dordrecht, Germany. Burbank, D.W. & Anderson, R.S., 2001. Tectonic Geomorphology, Blackwell Sciences Ltd., Oxford. Dalziel, I.W.D., 1998. Tectonic setting of Lake Vostok, in Lake Vostok: A Curiosity or a Focus for Interdisciplinary Studies?, pp. 17–19, Lake Vostok Workshop, Cambridge, November 1998, National Science Foundation. De Conto, R.M.&Pollard,D., 2003. Rapid Cenozoic glaciation of Antarctica induced by declining atmospheric CO2, Nature, 421, 245–249. Dowdeswell, J.A. & Siegert, M.J., 1999. The dimensions and topographic setting of Antarctic subglacial lakes: implications for large scale water storage beneath continental ice sheet, Geological Society of America Bulletin, 2, 254–263. Dowdeswell, J.A. & Siegert, M.J., 2003. The physiography of modern Antarctic subglacial lakes, Global Planetary Change, 35(4), 221–236. Drewry, D., 1986. Glacial Geologic Processes, Edward Arnold Publishers, Baltimore, Maryland. Forieri, A., Tabacco, I.E., Della Vedova, A., Zirizzotti, A., Bianchi, C., De Michelis, P. & Passerini, A., 2003. A new bedrock map of Dome Concordia area, Terra Antartica Reports 8, 169–174. Forieri, A., Zuccoli, L., Bini, A., Zirizzotti, A. & Tabacco, I.E., 2004. New bed topography of Dome C, Annals of Glaciology 39, 321–325. Gorman, M.R. & Siegert, M.J., 1999. Penetration of Antarctic subglacial lakes by VHF electromagnetic pulses: information on depth electrical conductivity of basal water bodies, J. geophys. Res., 1999, 104(B12), 29 311–29 320. Glen, J.W.&Paren, J.G., 1975. The electrical properties of snow ice, Journal of Glaciology, 151(73), 15–37. Leitchenkov, G.L., Verkulich, S.R. & Masolov, V.N., 1999. Tectonic setting of Lake Vostok possible information contained in its bottom sediments in Lake Vostok Study: Scientific Objectives and Technological Requirements, pp. 62–65. International workshop AARI, St. Petersburg, Russia. Lythe, M.B., Vaughan, D.G. & the BEDMAP Consortium. 2000, BEDMAP—bed topography of the Antarctic. 1:10,000,000 scale map, BAS (Misc) 9. Cambridge, British Antarctic Survey. Masolov, V.N., Kudryavtzev, G.A., Seremetiev, A.N., Popkov, A.M., Popov, S.V., Lukin, V.V., Grikurov, G.E. & Leitchenkov, G.L., 1999. Earth science studies in the Lake Vostok region: existing data proposals for future research, in Scar InternationalWorkshop on Subglacial Lake Exploration, pp. 1–18, Cambridge. Morelli, A. & Danesi, S., 2004. Seismological imaging of the Antarctic continental lithosphere: a review, Global and Planetary Change 42, 155– 165. Oswald, G.K.A. & Robin, G. de Q., 1973. Lakes beneath the Antarctic ice sheet, Nature, 275, 251–254. Popov, S.V., Masolov, V.N., Lukin, V.V. & Sheremetiev, A.N., 2002. Central part of east Antarctica: bedrock topography and subglacial lakes in Investigations and environmental protection of Antarctica, pp. 84–85. Scientific Conference AARI, St. Petersburg, Russia. Rasmussen, L.A., 1986. Refraction correction for radio echo sounding of ice overlain by firn, Journal of Glaciology, 32(111), 192–194. R´emy, F. & Tabacco, I.E., 2000. Bedrock features ice flow near the EPICA ice core site (Dome C, Antarctica), Geophys. Res. Lett., 27(3), 405–408. R´emy, F., Shaeffer, P. & Legr´esy, B., 1999. Ice flow physical processes derived from the ERS-1 high-resolution map of the Antarctica Greenland ice sheets, Geophys. J. Int., 139, 645–656. R´emy, F., Testut, L., Legr´esy, B., Forieri, A., Bianchi, C. & Tabacco I.E., 2002. Lakes subglacial hydrological networks around Dome C, Annals of Glaciology, 37, 252–256. Salvini, F., Storti, F. & McClay, K., 2001. Self determining numerical modelling of compressional fault bend folding, Geology, 29, 839–842. Salvini, F. & Storti, F., 2004. Active-hinge-folding-related deformation and its role in hydrocarbon exploration and development—insight from HCA modeling, in ed. McClay, K.R., Thrust tectonics and hydrocarbon systems: A.A.P.G. Memoirs 82, pp. 453–472. Salvini, F., Brancolini, G., Busetti, M., Storti, F., Mazzarini, F. & Coren F., 1997. Cenozoic geodynamics of the Ross Sea region, Antartica: crustal extension, intraplate strike-slip faulting tectonic inheritance, J. geophys. Res., 102, 24 669–24 696. Siegert, M.J., 2000. Antarctic subglacial lakes, Earth Science Reviews, 50, 29–50. Siegert, M.J., Dowdeswell, J.A., Gorman, M.R.&McIntyre, N.F., 1996a. An inventory of Antarctic subglacial lakes, Antarctic Science, 8(3), 281–286. Siegert, M.J. & Dowdeswell, J.A., 1996b. Spatial variations in heat at the base of the Antarctic ice sheet from analysis of the thermal regime above subglacial lakes, Journal of Glaciology, 42(142), 501–509. Siegert, M.J., Carter, S., Tabacco, I.E., Popov, S.&Blankenship, D.D., 2005. Arevised inventory of Antarctic subglacial lakes, Antarctic Science, 17(3), 453–460. Studinger, M., Karner, G.D., Bell, R.E., Levin, V., Raymond, C.A. & Tikku A.A., 2003. Geophysical models for the tectonic framework of the Lake Vostok region, East Antarctica, Earth planet. Sci. Lett., 216(4), 663– 677. Tabacco, I.E., Passerini, A., Corbelli, F.&Gorman, M., 1998. Determination of the surface bed topography at Dome C, East Antarctica, Journal of Glaciology, 44(146), 185–191. Tabacco, I.E., Bianchi, C., Chiappini, M., Passerini, A., Zirizzotti, A. & Zuccheretti, E., 1999. Latest improvements for the echo sounding system of the Italian radar glaciological group measurements in Antarctica, Annali di Geofisica, 42(2), 271–276. Tabacco, I.E., Bianchi, C., Zirizzotti, A., Zuccheretti, A., Forieri, A. & Della Vedova, A., 2002. Airborne radar survey aboveVostok region, East Central Antarctica: ice thickness Lake Vostok geometry, Journal of Glaciology, 48(160), 62–69. Tabacco, I.E., Forieri, A., Della Vedova, A., Zirizzotti, A., Bianchi, C. De Michelis, P. & Passerini, A., 2003. Evidence of 14 new subglacial lakes in DomeC-Vostok area, Terra Antartica Reports, 8, 175–179. http://hdl.handle.net/2122/2534 |
| op_rights |
restricted |
| _version_ |
1766003605672820736 |
| spelling |
ftingv:oai:www.earth-prints.org:2122/2534 2023-05-15T13:29:50+02:00 Physiography and tectonic setting of the subglacial lake district between Vostok and Belgica Subglacial Highlands (Antartica) Tabacco, I. Cianfarra, P. Forieri, A. Salvini, F. Zirizzotti, A. Tabacco, I.; Universit`a degli Studi di Milano, Dip. Scienze della Terra, Sez. Geofisica, Cianfarra, P.; Universit`a degli Studi Roma Tre, Dip. Scienze Geologiche, Forieri, A.; Universit`a degli Studi di Milano, Dip. Scienze della Terra, Sez. Geofisica, Salvini, F.; Universit`a degli Studi Roma Tre, Dip. Scienze Geologiche, Zirizzotti, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia Universit`a degli Studi di Milano, Dip. Scienze della Terra, Sez. Geofisica, Universit`a degli Studi Roma Tre, Dip. Scienze Geologiche, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia 2006 http://hdl.handle.net/2122/2534 en eng Geophys. J. Int. Bell, R.E., Studinger, M., Tikku, A.A., Clarke, G.K.C., Gutner, M.M. & Meertens, C., 2002. Origin and fate of Lake Vostok water frozen to the base of the East Antarctic ice sheet, Nature, 417, 307–310. Bogorodky,V.V., Bentley, C.R.&Gudmandsen, P.E., 1985. Radioglaciology, D.reidil Publishing Company, Dordrecht, Germany. Burbank, D.W. & Anderson, R.S., 2001. Tectonic Geomorphology, Blackwell Sciences Ltd., Oxford. Dalziel, I.W.D., 1998. Tectonic setting of Lake Vostok, in Lake Vostok: A Curiosity or a Focus for Interdisciplinary Studies?, pp. 17–19, Lake Vostok Workshop, Cambridge, November 1998, National Science Foundation. De Conto, R.M.&Pollard,D., 2003. Rapid Cenozoic glaciation of Antarctica induced by declining atmospheric CO2, Nature, 421, 245–249. Dowdeswell, J.A. & Siegert, M.J., 1999. The dimensions and topographic setting of Antarctic subglacial lakes: implications for large scale water storage beneath continental ice sheet, Geological Society of America Bulletin, 2, 254–263. Dowdeswell, J.A. & Siegert, M.J., 2003. The physiography of modern Antarctic subglacial lakes, Global Planetary Change, 35(4), 221–236. Drewry, D., 1986. Glacial Geologic Processes, Edward Arnold Publishers, Baltimore, Maryland. Forieri, A., Tabacco, I.E., Della Vedova, A., Zirizzotti, A., Bianchi, C., De Michelis, P. & Passerini, A., 2003. A new bedrock map of Dome Concordia area, Terra Antartica Reports 8, 169–174. Forieri, A., Zuccoli, L., Bini, A., Zirizzotti, A. & Tabacco, I.E., 2004. New bed topography of Dome C, Annals of Glaciology 39, 321–325. Gorman, M.R. & Siegert, M.J., 1999. Penetration of Antarctic subglacial lakes by VHF electromagnetic pulses: information on depth electrical conductivity of basal water bodies, J. geophys. Res., 1999, 104(B12), 29 311–29 320. Glen, J.W.&Paren, J.G., 1975. The electrical properties of snow ice, Journal of Glaciology, 151(73), 15–37. Leitchenkov, G.L., Verkulich, S.R. & Masolov, V.N., 1999. Tectonic setting of Lake Vostok possible information contained in its bottom sediments in Lake Vostok Study: Scientific Objectives and Technological Requirements, pp. 62–65. International workshop AARI, St. Petersburg, Russia. Lythe, M.B., Vaughan, D.G. & the BEDMAP Consortium. 2000, BEDMAP—bed topography of the Antarctic. 1:10,000,000 scale map, BAS (Misc) 9. Cambridge, British Antarctic Survey. Masolov, V.N., Kudryavtzev, G.A., Seremetiev, A.N., Popkov, A.M., Popov, S.V., Lukin, V.V., Grikurov, G.E. & Leitchenkov, G.L., 1999. Earth science studies in the Lake Vostok region: existing data proposals for future research, in Scar InternationalWorkshop on Subglacial Lake Exploration, pp. 1–18, Cambridge. Morelli, A. & Danesi, S., 2004. Seismological imaging of the Antarctic continental lithosphere: a review, Global and Planetary Change 42, 155– 165. Oswald, G.K.A. & Robin, G. de Q., 1973. Lakes beneath the Antarctic ice sheet, Nature, 275, 251–254. Popov, S.V., Masolov, V.N., Lukin, V.V. & Sheremetiev, A.N., 2002. Central part of east Antarctica: bedrock topography and subglacial lakes in Investigations and environmental protection of Antarctica, pp. 84–85. Scientific Conference AARI, St. Petersburg, Russia. Rasmussen, L.A., 1986. Refraction correction for radio echo sounding of ice overlain by firn, Journal of Glaciology, 32(111), 192–194. R´emy, F. & Tabacco, I.E., 2000. Bedrock features ice flow near the EPICA ice core site (Dome C, Antarctica), Geophys. Res. Lett., 27(3), 405–408. R´emy, F., Shaeffer, P. & Legr´esy, B., 1999. Ice flow physical processes derived from the ERS-1 high-resolution map of the Antarctica Greenland ice sheets, Geophys. J. Int., 139, 645–656. R´emy, F., Testut, L., Legr´esy, B., Forieri, A., Bianchi, C. & Tabacco I.E., 2002. Lakes subglacial hydrological networks around Dome C, Annals of Glaciology, 37, 252–256. Salvini, F., Storti, F. & McClay, K., 2001. Self determining numerical modelling of compressional fault bend folding, Geology, 29, 839–842. Salvini, F. & Storti, F., 2004. Active-hinge-folding-related deformation and its role in hydrocarbon exploration and development—insight from HCA modeling, in ed. McClay, K.R., Thrust tectonics and hydrocarbon systems: A.A.P.G. Memoirs 82, pp. 453–472. Salvini, F., Brancolini, G., Busetti, M., Storti, F., Mazzarini, F. & Coren F., 1997. Cenozoic geodynamics of the Ross Sea region, Antartica: crustal extension, intraplate strike-slip faulting tectonic inheritance, J. geophys. Res., 102, 24 669–24 696. Siegert, M.J., 2000. Antarctic subglacial lakes, Earth Science Reviews, 50, 29–50. Siegert, M.J., Dowdeswell, J.A., Gorman, M.R.&McIntyre, N.F., 1996a. An inventory of Antarctic subglacial lakes, Antarctic Science, 8(3), 281–286. Siegert, M.J. & Dowdeswell, J.A., 1996b. Spatial variations in heat at the base of the Antarctic ice sheet from analysis of the thermal regime above subglacial lakes, Journal of Glaciology, 42(142), 501–509. Siegert, M.J., Carter, S., Tabacco, I.E., Popov, S.&Blankenship, D.D., 2005. Arevised inventory of Antarctic subglacial lakes, Antarctic Science, 17(3), 453–460. Studinger, M., Karner, G.D., Bell, R.E., Levin, V., Raymond, C.A. & Tikku A.A., 2003. Geophysical models for the tectonic framework of the Lake Vostok region, East Antarctica, Earth planet. Sci. Lett., 216(4), 663– 677. Tabacco, I.E., Passerini, A., Corbelli, F.&Gorman, M., 1998. Determination of the surface bed topography at Dome C, East Antarctica, Journal of Glaciology, 44(146), 185–191. Tabacco, I.E., Bianchi, C., Chiappini, M., Passerini, A., Zirizzotti, A. & Zuccheretti, E., 1999. Latest improvements for the echo sounding system of the Italian radar glaciological group measurements in Antarctica, Annali di Geofisica, 42(2), 271–276. Tabacco, I.E., Bianchi, C., Zirizzotti, A., Zuccheretti, A., Forieri, A. & Della Vedova, A., 2002. Airborne radar survey aboveVostok region, East Central Antarctica: ice thickness Lake Vostok geometry, Journal of Glaciology, 48(160), 62–69. Tabacco, I.E., Forieri, A., Della Vedova, A., Zirizzotti, A., Bianchi, C. De Michelis, P. & Passerini, A., 2003. Evidence of 14 new subglacial lakes in DomeC-Vostok area, Terra Antartica Reports, 8, 175–179. http://hdl.handle.net/2122/2534 restricted Antarctica modelling 01. Atmosphere::01.01. Atmosphere::01.01.04. Processes and Dynamics article 2006 ftingv 2022-07-29T06:04:30Z We present the interpretation of 11 radio echo-sounding (RES) missions carried out over the Vostok–Dome Concordia region during the Italian Antarctic expeditions in the period 1995– 2001. The extension and the density of the radar data in the surveyed area allowed to reconstruct a reliable subglacial morphology and to identify four relevant morphological structures namely: the Aurora trench, the Concordia trench, the Concordia ridge and the South Hills. These structures show evidence compatible with the presence of tectonic features. Morphological considerations indicate their development in Cenozoic time. Hybrid cellular automata (HCA)- based numerical modelling allowed to justify a possible role played by the tectonics of the Aurora and Concordia trench evolution. This was accomplished by matching the bed profiles along opportunely projected sections with the modelled surfaces as derived by the activity of normal faults with variable surfaces within the continental crust. The Vostok–Dome C region is characterized by a large number of subglacial lakes. From the analysis of basal reflected power echo, we identified 14 new lakes and obtained information about their physiography as well as their possible relations with tectonics.We propose a grouping of subglacial lakes on the base of their physiography and geological setting, namely relief lakes, basin lakes and trench lakes. Relief lakes located in the Belgica subglacial highlands and are characterized by sharp and steep symmetric edges, suggesting a maximum water depth of the order of 100 m. Their origin may well relate to localized, positive geothermal flux anomalies. Basin lakes located in the Vincennes subglacial basin and are characterized by wider dimension that allow the development of well-defined, flat ice surface anomalies. Trench lakes characterize the Aurora and Concordia trenches as the possible effect of normal fault activity. Key words: Antarctica, HCA modelling, radio echo sounding, subglacial Published (1029-1040) JCR Journal reserved Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctic Science Antarctica Antarctica Journal antartic* Journal of Glaciology Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Antarctic Belgica Subglacial Highlands ENVELOPE(129.000,129.000,-76.500,-76.500) New Lakes ENVELOPE(177.649,177.649,51.951,51.951) Vincennes Subglacial Basin ENVELOPE(122.000,122.000,-73.000,-73.000) |