214 results found
SIEGERT MJ, DOWDESWELL JA, 1995, LATE WEICHSELIAN ICE-SHEET SENSITIVITY OVER FRANZ-JOSEF-LAND, RUSSIAN HIGH ARCTIC, FROM NUMERICAL MODELING EXPERIMENTS, BOREAS, Vol: 24, Pages: 207-224, ISSN: 0300-9483
SIEGERT MJ, DOWDESWELL JA, 1995, MODELING ICE-SHEET SENSITIVITY TO LATE WEICHSELIAN ENVIRONMENTS IN THE SVALBARD BARENTS SEA REGION, JOURNAL OF QUATERNARY SCIENCE, Vol: 10, Pages: 33-43, ISSN: 0267-8179
SIEGERT MJ, DOWDESWELL JA, 1995, NUMERICAL MODELING OF THE LATE WEICHSELIAN SVALBARD BARENTS SEA-ICE SHEET, QUATERNARY RESEARCH, Vol: 43, Pages: 1-13, ISSN: 0033-5894
Shoemaker IM, Kusenko A, Munneke PK, et al., Reflections On the Anomalous ANITA Events: The Antarctic Subsurface as a Possible Explanation
The ANITA balloon experiment was designed to detect radio signals initiatedby neutrinos and cosmic ray air showers. These signals are typicallydiscriminated by the polarization and phase inversions of the radio signal. Thereflected signal from cosmic rays suffer phase inversion compared to a directtau neutrino event. In this paper we study sub-surface reflection, which canoccur without phase inversion, in the context of the two anomalous up-goingevents reported by ANITA. We find that subsurface layers and firn densityinversions may plausibly account for the events, while ice fabric layers andwind ablation crusts could also play a role. This hypothesis can be tested withradar surveying of the Antarctic region in the vicinity of the anomalous ANITAevents. Future experiments should not use phase inversion as a sole criterionto discriminate between downgoing and upgoing events, unless the subsurfacereflection properties are well understood.
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