Synoptic measurements of Martian winds using the Hubble Space Telescope
Identifieur interne : 000619 ( Main/Exploration ); précédent : 000618; suivant : 000620Synoptic measurements of Martian winds using the Hubble Space Telescope
Auteurs : Michael A. Mischna [États-Unis] ; James F. Bell Iii [États-Unis] ; Philip B. James [États-Unis] ; David Crisp [États-Unis]Source :
- Geophysical Research Letters [ 0094-8276 ] ; 1998-03-01.
Abstract
We used the Hubble Space Telescope to make wind speed and wind direction measurements of the Martian atmosphere during early northern summer (Ls=97°). Our strategy utilized a series of near‐UV images with optimal temporal sampling to track observable cloud features and to determine the direction and speed of cloud motion. Several techniques were used to identify similar features between images, including Fourier transform and cross‐correlation. In these measurements, which span 19–75° N lat and 319° E to 135° W Ion, we find average wind speeds of 26.2 ± 10.1 m/s and a range of wind directions from 51° to 162° with an average error of ±23°.
Url:
DOI: 10.1029/98GL50358
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Mischna</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">État de New York</region></placeName><wicri:cityArea>Department of Astronomy, Cornell University, Ithaca</wicri:cityArea></affiliation></author><author><name sortKey="Bell Iii, James F" sort="Bell Iii, James F" uniqKey="Bell Iii J" first="James F." last="Bell Iii">James F. Bell Iii</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">État de New York</region></placeName><wicri:cityArea>Department of Astronomy, Cornell University, Ithaca</wicri:cityArea></affiliation></author><author><name sortKey="James, Philip B" sort="James, Philip B" uniqKey="James P" first="Philip B." last="James">Philip B. James</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">Ohio</region></placeName><wicri:cityArea>Department of Physics and Astronomy, University of Toledo, Toledo</wicri:cityArea></affiliation></author><author><name sortKey="Crisp, David" sort="Crisp, David" uniqKey="Crisp D" first="David" last="Crisp">David Crisp</name><affiliation wicri:level="2"><country>États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Jet Propulsion Laboratory/Caltech, Pasadena</wicri:cityArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Geophysical Research Letters</title><title level="j" type="abbrev">Geophys. Res. Lett.</title><idno type="ISSN">0094-8276</idno><idno type="eISSN">1944-8007</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="1998-03-01">1998-03-01</date><biblScope unit="volume">25</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="611">611</biblScope><biblScope unit="page" to="614">614</biblScope></imprint><idno type="ISSN">0094-8276</idno></series><idno type="istex">75B71A2F2E7F258932C918BB1EE6BB3E3503E654</idno><idno type="DOI">10.1029/98GL50358</idno><idno type="ArticleID">98GL50358</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0094-8276</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">We used the Hubble Space Telescope to make wind speed and wind direction measurements of the Martian atmosphere during early northern summer (Ls=97°). Our strategy utilized a series of near‐UV images with optimal temporal sampling to track observable cloud features and to determine the direction and speed of cloud motion. Several techniques were used to identify similar features between images, including Fourier transform and cross‐correlation. In these measurements, which span 19–75° N lat and 319° E to 135° W Ion, we find average wind speeds of 26.2 ± 10.1 m/s and a range of wind directions from 51° to 162° with an average error of ±23°.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Californie</li><li>Ohio</li><li>État de New York</li></region></list><tree><country name="États-Unis"><region name="État de New York"><name sortKey="Mischna, Michael A" sort="Mischna, Michael A" uniqKey="Mischna M" first="Michael A." last="Mischna">Michael A. Mischna</name></region><name sortKey="Bell Iii, James F" sort="Bell Iii, James F" uniqKey="Bell Iii J" first="James F." last="Bell Iii">James F. Bell Iii</name><name sortKey="Crisp, David" sort="Crisp, David" uniqKey="Crisp D" first="David" last="Crisp">David Crisp</name><name sortKey="James, Philip B" sort="James, Philip B" uniqKey="James P" first="Philip B." last="James">Philip B. James</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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