دورية أكاديمية
Brief communication: On the potential of seismic polarity reversal to identify a thin low-velocity layer above a high-velocity layer in ice-rich rock glaciers
| العنوان: | Brief communication: On the potential of seismic polarity reversal to identify a thin low-velocity layer above a high-velocity layer in ice-rich rock glaciers |
|---|---|
| المؤلفون: | J. Boaga, M. Pavoni, A. Bast, S. Weber |
| المصدر: | The Cryosphere, Vol 18, Pp 3231-3236 (2024) |
| بيانات النشر: | Copernicus Publications, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Environmental sciences LCC:Geology |
| مصطلحات موضوعية: | Environmental sciences, GE1-350, Geology, QE1-996.5 |
| الوصف: | Seismic refraction tomography is a commonly used technique to characterise rock glaciers, as the boundary between unfrozen and ice-bearing layers represents a strong impedance contrast. In several rock glaciers, we observed a reversed polarity of the waves refracted by an extended ice-bearing layer compared to direct-wave arrivals. This phase change may be related to the presence of a thin low-velocity layer (LVL), such as fine- to coarse-grained sediments, above a thicker ice-rich layer. Our results are confirmed by the modelling and analysis of synthetic seismograms to demonstrate that the presence of a low-velocity layer can produce a polarity reversal on the seismic gather. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 3231-2024 1994-0416 1994-0424 |
| Relation: | https://tc.copernicus.org/articles/18/3231/2024/tc-18-3231-2024.pdf; https://doaj.org/toc/1994-0416; https://doaj.org/toc/1994-0424 |
| DOI: | 10.5194/tc-18-3231-2024 |
| URL الوصول: | https://doaj.org/article/80f862f4e2db413f9f88d4dad9a3cbea |
| رقم الأكسشن: | edsdoj.80f862f4e2db413f9f88d4dad9a3cbea |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 32312024 19940416 19940424 |
|---|---|
| DOI: | 10.5194/tc-18-3231-2024 |