التفاصيل البيبلوغرافية
| العنوان: |
Interactions between boulders and aeolian ridges on Mars. |
| المؤلفون: |
Nagle-McNaughton, Timothy Paul, Scuderi, L. A. |
| المصدر: |
Earth Surface Processes & Landforms; Nov2021, Vol. 46 Issue 14, p2916-2929, 14p |
| مصطلحات موضوعية: |
BOULDERS, FLOW separation, SURFACE roughness, BEACH ridges, EOLIAN processes, MARTIAN atmosphere |
| مستخلص: |
Here we present new observations of two different interactions between aeolian ridges and boulder fields on Mars that provide insight into past wind conditions. First, an analysis of ridge and boulder interactions at two test sites in Proctor Crater and an additional site 430 km to the northeast shows that ridge geometry can be affected by changes in surface roughness elements generated by boulder fields. Second, a detailed examination of some of the boulder fields found that individual boulders can generate multi-armed 'wakes' that have no clear proxy on Earth. The ridge/boulder dynamics suggest that transverse aeolian ridges acted as roughness during their development, indicating that they formed at a length scale greater than wind ripples. The boulder wakes seem to represent an unusual interaction between flow separation and pre-exiting ridges; why this pattern is not observed on Earth remains uncertain. [ABSTRACT FROM AUTHOR] |
|
Copyright of Earth Surface Processes & Landforms is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
