Temporal variability of waves at the proton cyclotron frequency upstream from Mars: Implications for Mars distant hydrogen exosphere

We report on the temporal variability of the occurrence of waves at the local proton cyclotron frequency upstream from the Martian bow shock from Mars Global Surveyor observations during the first aerobraking and science phasing orbit periods. Observations at high southern latitudes during minimum-t...

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Autores principales:	Bertucci, Cesar, Romanelli, Norberto Julio, Gomez, Daniel Osvaldo
Publicado:	2013
Materias:	Exosphere Hydrogen Mars Pick-up Thermosphere Waves Direct measurement Mars global surveyor Plasma wave generation Southern latitudes Temporal variability Cyclotron resonance Pickups Protons Solar energy corona density Mars Pathfinder orbit determination polar region solar activity temporal variation thermosphere wave field
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v40_n15_p3809_Bertucci http://hdl.handle.net/20.500.12110/paper_00948276_v40_n15_p3809_Bertucci
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00948276_v40_n15_p3809_Bertucci
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spelling	paper:paper_00948276_v40_n15_p3809_Bertucci2023-06-08T15:09:36Z Temporal variability of waves at the proton cyclotron frequency upstream from Mars: Implications for Mars distant hydrogen exosphere Bertucci, Cesar Romanelli, Norberto Julio Gomez, Daniel Osvaldo Exosphere Hydrogen Mars Pick-up Thermosphere Waves Direct measurement Exosphere Mars Mars global surveyor Plasma wave generation Southern latitudes Temporal variability Thermosphere Cyclotron resonance Pickups Protons Solar energy Waves Hydrogen corona density Mars Mars Pathfinder orbit determination polar region solar activity temporal variation thermosphere wave field We report on the temporal variability of the occurrence of waves at the local proton cyclotron frequency upstream from the Martian bow shock from Mars Global Surveyor observations during the first aerobraking and science phasing orbit periods. Observations at high southern latitudes during minimum-to-mean solar activity show that the wave occurrence rate is significantly higher around perihelion/southern summer solstice than around the spring and autumn equinoxes. A similar trend is observed in the hydrogen (H) exospheric density profiles over the Martian dayside and South Pole obtained from a model including UV thermospheric heating effects. In spite of the complexity in the ion pickup and plasma wave generation and evolution processes, these results support the idea that variations in the occurrence of waves could be used to study the temporal evolution of the distant Martian H corona and its coupling with the thermosphere at altitudes currently inaccessible to direct measurements. © 2013. American Geophysical Union. All Rights Reserved. Fil:Bertucci, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Romanelli, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gomez, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v40_n15_p3809_Bertucci http://hdl.handle.net/20.500.12110/paper_00948276_v40_n15_p3809_Bertucci
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Exosphere Hydrogen Mars Pick-up Thermosphere Waves Direct measurement Exosphere Mars Mars global surveyor Plasma wave generation Southern latitudes Temporal variability Thermosphere Cyclotron resonance Pickups Protons Solar energy Waves Hydrogen corona density Mars Mars Pathfinder orbit determination polar region solar activity temporal variation thermosphere wave field
spellingShingle	Exosphere Hydrogen Mars Pick-up Thermosphere Waves Direct measurement Exosphere Mars Mars global surveyor Plasma wave generation Southern latitudes Temporal variability Thermosphere Cyclotron resonance Pickups Protons Solar energy Waves Hydrogen corona density Mars Mars Pathfinder orbit determination polar region solar activity temporal variation thermosphere wave field Bertucci, Cesar Romanelli, Norberto Julio Gomez, Daniel Osvaldo Temporal variability of waves at the proton cyclotron frequency upstream from Mars: Implications for Mars distant hydrogen exosphere
topic_facet	Exosphere Hydrogen Mars Pick-up Thermosphere Waves Direct measurement Exosphere Mars Mars global surveyor Plasma wave generation Southern latitudes Temporal variability Thermosphere Cyclotron resonance Pickups Protons Solar energy Waves Hydrogen corona density Mars Mars Pathfinder orbit determination polar region solar activity temporal variation thermosphere wave field
description	We report on the temporal variability of the occurrence of waves at the local proton cyclotron frequency upstream from the Martian bow shock from Mars Global Surveyor observations during the first aerobraking and science phasing orbit periods. Observations at high southern latitudes during minimum-to-mean solar activity show that the wave occurrence rate is significantly higher around perihelion/southern summer solstice than around the spring and autumn equinoxes. A similar trend is observed in the hydrogen (H) exospheric density profiles over the Martian dayside and South Pole obtained from a model including UV thermospheric heating effects. In spite of the complexity in the ion pickup and plasma wave generation and evolution processes, these results support the idea that variations in the occurrence of waves could be used to study the temporal evolution of the distant Martian H corona and its coupling with the thermosphere at altitudes currently inaccessible to direct measurements. © 2013. American Geophysical Union. All Rights Reserved.
author	Bertucci, Cesar Romanelli, Norberto Julio Gomez, Daniel Osvaldo
author_facet	Bertucci, Cesar Romanelli, Norberto Julio Gomez, Daniel Osvaldo
author_sort	Bertucci, Cesar
title	Temporal variability of waves at the proton cyclotron frequency upstream from Mars: Implications for Mars distant hydrogen exosphere
title_short	Temporal variability of waves at the proton cyclotron frequency upstream from Mars: Implications for Mars distant hydrogen exosphere
title_full	Temporal variability of waves at the proton cyclotron frequency upstream from Mars: Implications for Mars distant hydrogen exosphere
title_fullStr	Temporal variability of waves at the proton cyclotron frequency upstream from Mars: Implications for Mars distant hydrogen exosphere
title_full_unstemmed	Temporal variability of waves at the proton cyclotron frequency upstream from Mars: Implications for Mars distant hydrogen exosphere
title_sort	temporal variability of waves at the proton cyclotron frequency upstream from mars: implications for mars distant hydrogen exosphere
publishDate	2013
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v40_n15_p3809_Bertucci http://hdl.handle.net/20.500.12110/paper_00948276_v40_n15_p3809_Bertucci
work_keys_str_mv	AT bertuccicesar temporalvariabilityofwavesattheprotoncyclotronfrequencyupstreamfrommarsimplicationsformarsdistanthydrogenexosphere AT romanellinorbertojulio temporalvariabilityofwavesattheprotoncyclotronfrequencyupstreamfrommarsimplicationsformarsdistanthydrogenexosphere AT gomezdanielosvaldo temporalvariabilityofwavesattheprotoncyclotronfrequencyupstreamfrommarsimplicationsformarsdistanthydrogenexosphere
_version_	1768542545106698240

Temporal variability of waves at the proton cyclotron frequency upstream from Mars: Implications for Mars distant hydrogen exosphere

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