Discovery of Grooves on Gaspra
Icarus
By: J. Veverka, P. Thomas, D. Simonelli, M. J. S. Belton, M. Carr, C. Chapman, M. E. Davies, R. Greeley, R. Greenberg, J. Head, K. Klaasen, T. V. Johnson, D. Morrison, and G. Neukum
Links
- More information: Publisher Index Page (via DOI)
- Open Access Version: Publisher Index Page
- Download citation as: RIS | Dublin Core
Abstract
We report the discovery of grooves in Galileo high-resolution images of Gaspra. These features, previously seen only on Mars' satellite Phobos, are most likely related to severe impacts. Grooves on Gaspra occur as linear and pitted depressions, typically 100-200 m wide, 0.8 to 2.5 km long, and 10-20 m deep. Most occur in two major groups, one of which trends approximately parallel to the asteroid's long axis, but is offset by some 15??; the other is approximately perpendicular to this trend. The first of these directions falls along a family of planes which parallel three extensive flat facets identified by Thomas et al., Icarus 107. The occurrence of grooves on Gaspra is consistent with other indications (irregular shape, cratering record) that this asteroid has evolved through a violent collisional history. The bodywide congruence of major groove directions and other structural elements suggests that present-day Gaspra is a globally coherent body. ?? 1994 Academic Press. All rights reserved.
Suggested Citation
Veverka, J., Thomas, P., Simonelli, D., Belton, M.J., Carr, M., Chapman, C., Davies, M.E., Greeley, R., Greenberg, R., Head, J., Klaasen, K., Johnson, T.V., Morrison, D., Neukum, G., 1994, Discovery of Grooves on Gaspra: Icarus, v. 107, no. 1, p. 72-83, https://doi.org/10.1006/icar.1994.1007.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Discovery of Grooves on Gaspra |
| Series title | Icarus |
| DOI | 10.1006/icar.1994.1007 |
| Volume | 107 |
| Issue | 1 |
| Year Published | 1994 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Icarus |
| First page | 72 |
| Last page | 83 |