Acquisition of ice properties using mechanical actuation

Wrinch, Michael C. (2002) Acquisition of ice properties using mechanical actuation. Masters thesis, Memorial University of Newfoundland.

[img] [English] PDF (Migrated (PDF/A Conversion) from original format: (application/pdf)) - Accepted Version
Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.

Download (11Mb)
  • [img] [English] PDF - Accepted Version
    Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
    (Original Version)

Abstract

Research surrounding acoustic resonance properties of ice has increased and now a practical method for depth profiling has been developed. Experiments were performed in real-time with high sensitivity, biaxial, wide bandwidth accelerometers (10 KHz bandwidth), which encompassed a high sampling rate of 200 Kb/sec/channel with a 12-bit resolution (36 dB). The implementation of signal processing produced a seismic and resonant signature. Initially repeated results revealed an accurate correlation between ice depth to its characteristic frequency. The required velocity was determined using the time of arrival and the cross-correlation between transducers. Theoretical analysis has indicated that the system will be capable of resolving values close to the theoretically calculated error of less than 6 %: this device therefore can be readily realized as a compact portable field instrument.

Item Type: Thesis (Masters)
URI: http://research.library.mun.ca/id/eprint/5434
Item ID: 5434
Additional Information: Bibliography: leaves 115-116.
Department(s): Engineering and Applied Science, Faculty of
Date: 2002
Date Type: Submission
Library of Congress Subject Heading: Underwater acoustics--Instruments; Ice--Remote sensing; Sea ice--Remote sensing; Ice on rivers, lakes, etc.--Remote sensing

Actions (login required)

View Item View Item

Downloads

Downloads per month over the past year

View more statistics