| Autor: |
Christine McCarthy, Michael A. Nielson, Allie N. Coonin, Jessica Shea Minker, Armando A. Domingos |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Geosciences, Vol 9, Iss 8, p 327 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
2076-3263 |
| DOI: |
10.3390/geosciences9080327 |
| Popis: |
We measured the ultrasonic properties and microstructure of two-phase binary mixtures of the ice−ammonia partial melt system, which was selected based on its importance for numerous planetary bodies. The equilibrium microstructure of ice−ammonia melt was examined using a light microscope within a cold room. The measured median dihedral angle between the solid and melt at 256 K is approximately 63°, with a broad distribution of observed angles between 10° and 130°. P-wave velocities in the partially molten samples were measured as a function of temperature (177 < T(K) < 268) and composition (1−6.4 wt % NH3). Vp decreases approximately linearly with increasing temperature and melt fraction. We compare the results of this study to those of other potential binary systems by normalizing the datasets using a vertical lever (TL−TE) and articulating the potential effects on the mechanical behavior and transport capabilities of partially molten ice in icy satellites. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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