Abstract
Ice streams play a major role in the ice mass balance and in the reckoning of the global sea level; they have therefore been object of wide scientific interest in the last three decades. During the 21st Italian Antarctic Expedition, in the austral summer 2005–06, we deployed a joint seismographic and geodetic network in the area of the David Glacier, Southern Victoria Land. This campaign followed a similar experiment carried out in the same area during the austral summer 2003–04 with the deployment of a seismographic network that recorded significant microseismicity beneath the David Glacier, primarily occurring as a few small clusters. In the latest 2005–06 deployment, 7 seismographic stations and 3 GPS geodetic receivers operated continuously for a period of 3 months (November 2005–early February 2006) in an area of about 100×150 km2 around the David Glacier. We have carried out several analyses using the combined data sets. These included the examination of the temporal evolution in earthquake magnitude and location and also the contemporaneous observation of both seismic activity and surface kinematics of the ice stream to possibly correlate the recorded microseismicity with the movement of the glacier, affected by the Ross Sea tides. Unfortunately, a clear correlation between the occurrence of seismic events and the movement of the glacier is not evident. Here we present some details of the two temporary networks and preliminary results and implications.
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References
Alley RB (1992) Sticky spots under ice streams. Antarctic Journal of the U.S. 28 Vol 5 pp 50–51.
Alley RB, Blankenship DD, Bentley CR, Rooney ST (1986) Deformation of till beneath ice stream B West Antarctica. Nature vol 322 6074 pp 57–59. doi:10.1038/322057a0.
Alley RB, Clark PU, Huybrechts P, Joughin I (2005) Ice-sheet and sea level changes. Science 310 pp 456–460.
Anandakrishnan S, Bentley CR (1993) Micro-earthquakes beneath Ice Streams B and C, West Antarctica: Observations and implications. J. Glaciol. vol 39 133 pp 455–462.
Anandakrishnan S, Voigt DE, Alley RB and King MA (2003) Ice stream D flow speed is strongly modulated by the tide beneath the Ross Ice Shelf. Geophys. Res. Lett. vol 30 7 pp 1361–1364 doi:10.1029/2002GL016329.
Bahr DB, Rundle JB (1996) Stick-slip statistical mechanics at the bed of a glacier. Geophys. Res. Lett. vol 23 16 pp 2073–2076.
Bannister S, Kennett BLN. (2002) Seismic Activity in the Transantarctic Mountains – Results from a Broadband Array Deployment. Terra Antarctica 9 vol 1 pp 41–46.
Bindschadler RA, King MA, Alley RB, Anandakrishnan S, Padman L (2003) Tidally Controlled Stick-Slip Discharge of a West Antarctic Ice Stream. Science 301 pp 1087–1089 doi: 10.1126/science.1087231
Blankenship DD, Bentley CR, Rooney ST Alley RB (1986) Seismic measurements reveal a saturated porous layer beneath an active Antarctic ice stream. Nature vol 322 6074 pp 54–57. doi:10.1038/322054a0.
Capra A, Gandolfi S, Lusetti C, Stocchino C, Vittuari L (1999) Kinematic GPS for the study of tidal undulation of floating ice tongue. Bollettino di Geodesia e Scienze Affini IGM LVIII no. 2 pp 151–173.
Chen G (1998) GPS Kinematic Positioning for the Airborne Laser Altimetry at Long Valley California. Ph. D. Thesis Massachusetts Institute of Technology pp. 173 Cambridge MA.
Danesi S, Bannister S, Morelli A (2007) Repeating earthquakes from rupture of an asperity under an Antarctic outlet glacier. Earth Planet. Sci. Lett. 253 vol 1–2 pp 151–158.
Doake CSM, Corr HFJ, Nicholls KW, Gaffikin A, Jenkins A, Bertiger WI and King MA (2002) Tide-induced lateral movement of Brunt Ice Shelf, Antarctica. Geophys. Res. Lett. vol 29 8 pp 1226–1229 doi:10.1029/2001GL014606
Ekström G (2006b) Global detection and Location of Seismic Sources by Using Surface Waves Bull. Seismol. Soc. Am. 96 4A pp 1201–1212.
Ekström G, Nettles M, Abers GA (2003) Glacial earthquakes. Science 302 pp 622–624.
Ekström G, Nettles M, Tsai VC (2006a) Seasonality in Increasing Frequency of Greenland Glacial Earthquakes. Science 311 pp 1756–1758.
Frezzotti M (1993) Glaciological study in Terra Nova Bay Antarctica inferred from remote sensing analysis. Ann. Glaciol. 17 pp 63–71.
Frezzotti M, Capra A, Vittuari L (1998) Comparison between glacier ice velocity inferred from GPS and sequential satellite images. Ann. Glaciol. 27 pp 54–60.
Frezzotti M, Tabacco IE, Zirizzotti A (2000) Ice discharge of eastern Dome C drainage area Antarctica determined from airborne radar survey and satellite image analysis. Ann. Glaciol. 46 vol 153 pp 253–264.
Gudmundsson GH (2006) Fortnightly variations in the flow velocity of Rutford Ice Stream West Antarctica. Nature 444 vol 7122 pp 1063–1064.
Gutenberg B, Richter CF (1944) Frequency of earthquakes in California. Bull. Seismol. Soc. Am. 34 pp 185–188.
Herring TA (2002) Track GPS kinematic positioning program. Version 1.07. Cambridge MA: Massachusetts Institute of Technology.
Herring TA, King R, McClusky S (2006) Gamit Reference Manual release 10.3 Report Massachusetts Institute of Technology Cambridge MA.
Hooke RLeB (2005) Principles of Glacier Mechanics, Cambridge University Press, Cambridge UK
Horgan HJ, Anandakrishnan S (2006) Static grounding lines and dynamic ice streams: Evidence from the Siple Coast Antarctica. Geophys. Res. Lett. 33 L18502 doi:10.1029/2006GL027091.
Hulbe CL and Whillans IM (1994) Evaluation of strain rates on Ice Stream B Antarctica obtained using GPS phase measurements. Ann. Glaciol. 20 pp 254–262.
King M and Aoki S (2003) Tidal observations on floating ice using a single GPS receiver. Geophys. Res. Lett. vol 30 3 pp 1138–1141, doi:10.1029/2002GL016182.
King RW and Bock Y (2005) Documentation for the GAMIT GPS processing software release 10.2 Mass. Inst. of Technol. Cambridge.
Klein FW (2002) User’s guide to HYPOINVERSE-2000 a fortran program to solve for earthquake locations and magnitudes. U.S. Geol. Survey Open File Report 2–171.
Legresy B, Wendt A, Tabacco I, Remy F and Dietrich R (2004) Influence of tides and tidal current on Mertz Glacier, Antarctica. J. Glac. 50 170 pp 427–435.
Neave KG, Savage JC (1970) Icequakes on the Athabasca Glacier. J. Geophys. Res. 75 vol 8 pp 1351–1362.
Payne AJ, Vieli A, Shepherd AP, Wingham DJ, Rignot E (2004) Recent dramatic thinning of largest West Antarctic ice stream triggered by oceans. Geophys. Res. Letts. 31 L23401.
Raymond CF, Echelmeyer KA, Whillans IM, Doake CSM (2001) Ice stream shear margins. In Alley RB, Bindschadler RA (Eds.), The West Antarctic Ice Sheet: Behaviour and Environment. Antarctic Research Serier, vol 77. Am. Geophys. Union, Washington DC, pp 137–155.
Rignot E (2002) Mass balance of East Antarctic glaciers and ice shelves from satellite data. Ann. Glaciol. 34 pp 217–227.
Rignot E, Thomas RH (2002) Mass Balance of Polar Ice Sheets. Science 297 pp 1502–1506.
Rignot E, Jacobs S (2002) Rapid bottom melting widespread near Antarctic Ice Sheet grounding lines. Science 296 pp 2020–2023.
Salvini F, Storti F (1999) Cenozoic right-lateral strike-slip tectonics in the Ross Sea region Antarctica. In: Ricci C.A. (ed.) The Antarctic region: Geological Evolution and Processes. Terra Antarctica Publ, Siena, pp 585–590.
Shepherd A, Wingham D (2007) Recent Sea-Level Contribution of the Antarctic and Greenland Ice Sheets. Science 315 pp 1529–1532 doi:10.1126/science.1136776.
Smith AM (2006) Microearthquakes and subglacial conditions. Geophys. Res. Lett. 33 L24501 doi:10.1029/2006GL028207.
Van Wormer D, Berg E (1973) Seismic evidence for glacier motion. J. Glaciol. 12 vol 65 pp 259–265.
Waldhauser F (2001) hypoDD — a program to compute Double-Difference hypocentre locations. U.S. Geol. Survey, Open File Report, 1–113.
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Danesi, S., Dubbini, M., Morelli, A., Vittuari, L., Bannister, S. (2008). Joint Geophysical Observations of Ice Stream Dynamics. In: Capra, A., Dietrich, R. (eds) Geodetic and Geophysical Observations in Antarctica. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74882-3_16
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DOI: https://doi.org/10.1007/978-3-540-74882-3_16
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