[Location: Location_Category='CONTINENT', Location_Type='ANTARCTICA', Detailed_Location='NEW HARBOUR']
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A seismic refraction survey on sea ice near Butter Point, New Harbour, McMurdo Sound
Entry ID:
K042_1980_1981_NZ_1
Summary
Abstract:
A seismic refraction survey was conducted on sea ice near Butter Point to provide data on sediment thickness for possible further drilling and to investigate the cause of a reported gravity anomaly. 12 vertical geophones were spaced at 29.95m intervals, frozen in to holes chipped in the sea ice and covered by 100-200mm of snow. Two reverse lines were shot, using four shot points.
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Geographic Coverage
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Spatial coordinates
Temporal Coverage
Start Date:
1980-11-26
Stop Date:
1980-12-03
Location Keywords
Science Keywords
ISO Topic Category
Platform
Instrument
Quality
The investigator has retired. Most of the data was reported in the publication.
Appendix 1 Seismic Refraction Survey contains the following data: A: Details of shots fired (Line, Shot Number, Time, Shot Depth, Charge, Shot instant warning time, Fuse Burning time, Offset = distance to nearest geophone) B: Linear Regression Lines for the Refraction Arrivals at each spread (Line, Spread, Offset, Shot Point, Apparent Velocity, Intercept, Comments) C: Time/Distance graph for Line 1 D: Time/Distance bar graph for Line 2 E: Plane Layer Interpretation F: Shot Instant Detection G: Ray Tracing Analysis Data Set Progress
COMPLETE
Data Center
Personnel
Publications/References
Iles, D. Dibble, R.R. 1981 Seismic refraction survey on sea-ice near Butter Point, New Harbour, McMurdo Sound. Immediate report - Victoria University of Wellington Antarctic Expedition 25. Wellington Antarctic Research Centre, Victoria University of Wellington
Creation and Review Dates
DIF Creation Date:
2009-03-03
Last DIF Revision Date:
2009-03-17
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