| An ultrasonic anemometer for Mars. | |
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MedLine Citation:
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PMID: 18531828 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Ultrasonic anemometers are often used for studies of 3-D atmospheric turbulence on Earth, due to their robust calibration and fast operation (>10 Hz). The same qualities make ultrasonic anemometry attractive for use on Mars, where similar atmospheric turbulence is found. The low density of Martian atmosphere - a hundredth that of the Earth's - is problematic, because of the large acoustic impedance mismatch between the atmosphere and piezoelectric transducers. One solution to this problem is to use piezoelectric transducers with a hornlike resonator bonded to their front surface. Another solution is to use a capacitive membrane transducer instead. We report on performance of various ultrasonic transducers in carbon dioxide Martian pressures, and present an instrument design capable of meeting the stringent mass, power, and environmental requirements of the European ExoMars lander. |
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Authors:
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Colin Wilson; David Hutchins; Lee A Davis; Martin C Towner |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 123 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2008 May |
Date Detail:
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Created Date: 2008-06-05 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 3702 Citation Subset: IM |
Affiliation:
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University of Oxford, Department of Atmospheric, Oceanic and Planetary Physics, OX1 3PU Oxford, UK, wilson@atmos.ox.ac.uk. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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