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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Spectral Analysis on the Variability of Surface Pressure and Wind on Mars: Viking Lander 2 Observations Revisited

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Author(s):
de Souza Echer, Mariza Pereira [1] ; Domingues, Margarete Oliveira [1] ; Echer, Ezequiel [1] ; Mendes, Odim [1] ; Gonzalez, Walter [1, 2]
Total Authors: 5
Affiliation:
[1] Natl Inst Space Res INPE, Sao Jose Dos Campos - Brazil
[2] NSSC, CAS Key Lab Space Weather, Beijing - Peoples R China
Total Affiliations: 2
Document type: Journal article
Source: Brazilian Journal of Physics; v. 51, n. 6 SEP 2021.
Web of Science Citations: 0
Abstract

In this work, we analyze the meteorological data sets of pressure and wind velocity vector components, recorded by instruments onboard the Viking Lander 2, evolving from summer to winter Martian solstices provided by the Viking Meteorology Experiment Team. We performed a multiscale signal analysis based on a gaped wavelet transform technique. Even in the presence of data gaps, it is possible to highlight new features related to the non-stationary behaviour in the data. The main peaks of the common spectral scales found in the global wavelet spectrum for the pressure range from 0.2, 0.5, 1, 7 to 593.6 SOLS. The same occurs for the zonal wind data, the values ranging from 0.5,1 to 593.6 SOLS. The meridional wind has periods from 0.5 to 381 SOLS. The correlation signatures between pressure and wind show significant similarities. However, by the analysis of the phase angles, it was found that the variables are not always in phase correspondence. (AU)

FAPESP's process: 15/25624-2 - Development of multiscale modelling for non-linear local plasma instabilities of Astrophysics and Space Geophysics
Grantee:Margarete Oliveira Domingues
Support type: Regular Research Grants
FAPESP's process: 20/13015-0 - Annual Plan for Application of the Technical Reserve Installment for Institutional Infrastructure Costs for Research: Update and optimization of antenna testing facilities, repair of multi-user equipment and acquisition of new equipment
Grantee:Carlos Alexandre Wuensche de Souza
Support type: Research Grants - Technical Reserve for Institutional Research Infrastructure