The Martian magnetotail exhibits a highly twisted configuration, shifting in response to changes in polarity of the interplanetary magnetic field's (IMF) dawn-dusk ( ) component. Here, we analyze ∼6000 MAVEN orbits to quantify the degree of magnetotail twisting ( ) and assess variations as a function of (a) strong planetary crustal field location, (b) Mars season, and (c) downtail distance. The results demonstrate that is larger for a duskward (+ ) IMF orientation a majority of the time. This preference is likely due to the local orientation of crustal magnetic fields across the surface of Mars, where a + IMF orientation presents ideal conditions for magnetic reconnection to occur. Additionally, we observe an increase in with downtail distance, similar to Earth's magnetotail. These findings suggest that coupling between the IMF and moderate-to-weak crustal field regions may play a major role in determining the magnetospheric structure at Mars.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9286686 | PMC |
| http://dx.doi.org/10.1029/2022GL098007 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Volcanic activity has been shown to affect Earth's climate in a myriad of ways. One such example is that eruptions proximate to surface ice will promote ice melting. In turn, the crustal unloading associated with melting an ice sheet affects the internal dynamics of the underlying magma plumbing system.
View Article and Find Full Text PDFFine-scale Southern California Moho structure uncovered with distributed acoustic sensing.
Sci Adv
November 2024
California Institute of Technology, Pasadena, CA, USA.
Moho topography yields insights into the evolution of the lithosphere and the strength of the lower crust. The Moho reflected phase (PmP) samples this key boundary and may be used in concert with the first arriving P phase to infer crustal thickness. The densely sampled station coverage of distributed acoustic sensing arrays allows for the observation of PmP at fine-scale intervals over many kilometers with individual events.
View Article and Find Full Text PDFArticle Synopsis
- - This study examines how the ionosphere on Mars is affected by crustal magnetic fields and solar wind pressure using data from the MAVEN spacecraft's Langmuir Probe and Waves instrument.
- - Researchers found that electron density decreases when comparing the solar wind's dynamic pressure to the magnetic pressure of Mars' crustal fields, indicating an inverse relationship.
- - Different magnetic field configurations change the behavior of electron density, with lower densities observed in certain topologies, suggesting that solar wind interactions and magnetic forces play a complex role in shaping the Martian atmosphere.
The relationship between crustal deformation characteristics and strong earthquakes in western China revealed by GNSS.
Sci Rep
November 2024
Gansu Earthquake Agency, Lanzhou, 730000, China.
To clarify the relationship between GNSS (Global Navigation Satellite System) crustal deformation and the preparation of strong earthquakes in the western Chinese Mainland, a series of methods including velocity field, strain rate field, and strain parameter time series are adopted based on the GNSS observation data from the CMONOC (Crustal Movement Observation Network of China). The abnormal characteristics of crustal deformation movement before the M ≥ 5 earthquakes in the area since 1999 are studied. The corresponding variety of the crustal movement before earthquakes is discussed in combination with the seismogenic structure of earthquakes.
View Article and Find Full Text PDFA crustal Pb isotope map of southeastern Australia.
Sci Data
November 2024
John de Laeter Centre, Curtin University, Perth, WA, 6102, Australia.
Lead isotopes are a powerful geochemical tracer and a popular tool applied across a broad range of scientific fields, e.g., earth sciences, archaeology, and forensic sciences.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!