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

Autor(es)

de Souza Echer, Mariza Pereira ^[1] ; Domingues, Margarete Oliveira ^[1] ; Echer, Ezequiel ^[1] ; Mendes, Odim ^[1] ; Gonzalez, Walter ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Natl Inst Space Res INPE, Sao Jose Dos Campos - Brazil

^[2] NSSC, CAS Key Lab Space Weather, Beijing - Peoples R China

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Journal of Physics; v. 51, n. 6 SEP 2021.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 15/25624-2 - Desenvolvimento de modelagem multiescala para instabilidades locais não-lineares em Astrofísica e Geofísica Espacial
• Beneficiário: Margarete Oliveira Domingues
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 20/13015-0 - Plano Anual de Aplicação da Parcela da Reserva Técnica Para Custos de Infraestrutura Institucional para Pesquisa: Atualização e otimização das facilidades de testes de antenas, conserto de equipamentos multiusuários e aquisição de novos equipamentos
• Beneficiário: Carlos Alexandre Wuensche de Souza
• Modalidade de apoio: Auxílio à Pesquisa - Reserva Técnica para Infraestrutura Institucional de Pesquisa