Results 81 to 90 of about 289 (174)
Journal of Glaciology, 2016 A short-term series of quantitative observations of calving activity of Fuerza Aérea Glacier (Greenwich Island, the South Shetland Islands, Antarctica) was conducted in order to test new methods of monitoring calving.
MICHAŁ PĘTLICKI, CHRISTOPHE KINNARD
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Instruments and Methods Glacier Bore-Hole Photography
, 1973 A 51 mm diameter bore-hole camera allows observation of subglacial conditions, measurement of basal sliding rates, and study of internal structure and debris in ice at depth. The camera is simple in construction, field operation and maintenance.
Barclay Kamb, W. D. Harrison
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Assessing the applicability of terrestrial laser scanning for mapping englacial conduits
Journal of Glaciology, 2018 The morphology of englacial drainage networks and their temporal evolution are poorly characterised, particularly within cold ice masses. At present, direct observations of englacial channels are restricted in both spatial and temporal resolution ...
J. E. KAMINTZIS +7 more
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Instruments and Methods: Portable Thermal Core Drill for Temperate Glaciers
, 1964 In the summer of 1962 a completely portable and relatively simple electrically heated thermal core drill of new design was constructed and used to obtain 16 oriented samples of ice 2.5 cm. in diameter by 120 cm.
W. B. Kamb, R. L. Shreve
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Instruments and Methods: A Simple Thermal Ice Drill
, 1963 A thermal ice drill using a silicon carbide electrical resistance element has been developed. The silicon carbide element is operated bare in water, permitting a very simple and efficient drill design. Maximum operating power density in these elements is
E. LaChapelle
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Journal of Glaciology, 2019 We present a workflow to track icebergs in proglacial fjords using oblique time-lapse photos and the Lucas-Kanade optical flow algorithm. We employ the workflow at LeConte Bay, Alaska, where we ran five time-lapse cameras between April 2016 and September
CHRISTIAN KIENHOLZ +9 more
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Instruments and Methods Snow Density Profiling by Nuclear Means
, 1966 During the period 8–19 May 1963 a preliminary field investigation was conducted in Greenland to determine the feasibility of using a nuclear technique to determine snow and ice density profiles.
Robert D. Leighty
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Annals of GlaciologyWe present a high-resolution dataset of over one million icequakes located just upglacier of the grounding line of Rutford Ice Stream, West Antarctica, spanning a 23 day period during January 2019.
Ian R.J. Lee +3 more
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Instruments and Methods: A New Bore-Hole Inclinometer
, 1971 A newly developed bore-hole inclinometer permits the determination of bore-hole configurations with greater accuracy and efficiency in comparison with earlier systems of inclinometry.
C.F. Raymond
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Hot-water Drilling And Bore-hole Closure In Cold Ice
, 1990 Drilling bore holes in deep, cold ice masses by hot-water methods and maintaining these holes with sufficient diameter to allow down-hole experimentation poses a major obstacle to the investigation of conditions beneath ice sheets and ice streams ...
Neil Humphrey, Keith Echelmeyer
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