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Alver (crater)

Coordinates:66°58′S77°15′E / 66.97°S 77.25°E /-66.97; 77.25
From Wikipedia, the free encyclopedia
Crater on Mercury
Alver
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MESSENGER image
Feature typePeak-ring impact basin
LocationBach quadrangle,Mercury
Coordinates66°58′S77°15′E / 66.97°S 77.25°E /-66.97; 77.25
Diameter151.49 km (94.13 mi)
EponymBetti Alver

Alver is a crater onMercury. It has a diameter of 151.49 kilometers. Its name was adopted by theInternational Astronomical Union (IAU) on March 15, 2013. Alver is named for the Estonian poetBetti Alver.[1]

Alver is one of 110peak ring basins on Mercury.[2] It lies in southernUtaridi Planitia.

On the western side of the peak ring is adark spot of low reflectance material (LRM), closely associated withhollows.[3] At least four irregular depressions are present in the vicinity of the northwestern peak ring. These depressions are evidence of explosive volcanism on the floor of the crater.[4]

  • Exaggerated color image with Alver at bottom center
    Exaggerated color image with Alver at bottom center
  • Detail of Alver crater
    Detail of Alver crater

References

[edit]
  1. ^"Alver".Gazetteer of Planetary Nomenclature.NASA. Retrieved20 January 2020.
  2. ^Chapman, C. R., Baker, D. M. H., Barnouin, O. S., Fassett, C. I., Marchie, S., Merline, W. J., Ostrach, L. R., Prockter, L. M., and Strom, R. G., 2018. Impact Cratering of Mercury. InMercury: The View AfterMESSENGER edited by Sean C. Solomon, Larry R. Nittler, and Brian J. Anderson. Cambridge Planetary Science. Chapter 9.
  3. ^Xiao, Zhiyong; Strom, Robert G.; Blewett, David T.; Byrne, Paul K.; Solomon, Sean C.; Murchie, Scott L.; Sprague, Ann L.; Domingue, Deborah L.; Helbert, Jörn (September 2013)."Dark spots on Mercury: A distinctive low‐reflectance material and its relation to hollows".Journal of Geophysical Research: Planets.118 (9):1752–1765.doi:10.1002/jgre.20115.ISSN 2169-9097.
  4. ^David Pegg, David Rothery, M.R. Balme, Susan Conway, 2021. Explosive vent sites on Mercury: Commonplace multiple eruptions and their implications. Icarus 365:114510.doi.org/10.1016/j.icarus.2021.114510
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