Martian wind activity detected by a seismometer at Viking lander 2 site

Details Martian wind activity detected by a seismometer at Viking lander 2 site Martian wind activity detected by a seismometer at Viking lander 2 site

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979georl...6..499n&link_type=abstract

Geophysical Research Letters, vol. 6, June 1979, p. 499-502.

Mathematics

Logic

2

Mars Atmosphere, Seismographs, Viking Lander 2, Wind Velocity Measurement, Annual Variations, Diurnal Variations, Landing Sites, Noise Spectra, Planetary Meteorology, Power Spectra, Mars, Observations, Viking 2 Lander, Landing Sites, Diurnal Variations, Seasons, Wind, Seismometers, Seismic Data, Annual Variations

Scientific paper

Since the Viking lander 2 seismometer (Anderson et al., 1977) located on top of the lander is extremely sensitive to Martian winds, it can provide a record of Martian wind activity. The seismograph continuously samples the wind-induced lander vibration, and its output complements meteorological data. Some pertinent seismic data are presented along with results of a preliminary spectral analysis of the data. Attention is given to wind speed/seismic noise correlation, and to long-term variation and periodicity. The results indicate that wind variations on Mars are very regular in the summer and winter seasons. Winds are light in summer and exhibit a strong diurnal periodicity, the strongest winds occurring in the early afternoon. Winds become stronger and more irregular in autumn. In all seasons nighttime conditions are usually very quiet. The high wind season correlates with the global dust storm duration. Spring is characterized by very strong though variable wind activity. Other details are also presented.

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