Permafrost - Relation between ice content and dielectric losses at 100 K
The dielectric response of permafrost at 100 K and vacuums of around 10 ntorr is analyzed, varying its percent ice content from 1 to 18.6. The distributions obtained correspond to dielectric relaxations of the Cole-Cole type, with maximum losses occurring in the 30- to 600-Hz frequency range. The lo...
| Main Author: | |
|---|---|
| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
1973
|
| Subjects: | |
| Online Access: | http://ntrs.nasa.gov/search.jsp?R=19740035153 |
| Summary: | The dielectric response of permafrost at 100 K and vacuums of around 10 ntorr is analyzed, varying its percent ice content from 1 to 18.6. The distributions obtained correspond to dielectric relaxations of the Cole-Cole type, with maximum losses occurring in the 30- to 600-Hz frequency range. The logarithms of such maxima depend linearly on the permafrost ice content, two regions of linear variation being defined above and below 3.6% ice content. Such relations point out the feasibility of determining ice content in permafrost by electromagnetic means. |
|---|