Radiofrequency ice dielectric measurements at Summit Station, Greenland

Aguilar JA, Allison P, Besson D, Bishop A, Botner O, Bouma S, Buitink S, Cataldo M, Clark BA, Couberly K, Curtis-Ginsberg Z, Dasgupta P, De Kockere S, De Vries KD, Deaconu C, Duvernois MA, Eimer A, Glaser C, Hallgren A, Hallmann S, Hanson JC, Hendricks B, Henrichs J, Heyer N, Hornhuber C, Hughes K, Karg T, Karle A, Kelley JL, Korntheuer M, Kowalski M, Kravchenko I, Krebs R, Lahmann R, Latif U, Mammo J, Marsee MJ, Meyers Z, Michaels K, Mulrey K, Muzio M, Nelles A, Novikov A, Nozdrina A, Oberla E, Oeyen B, Plaisier I, Punsuebsay N, Pyras LM, Ryckbosch D, Scholten O, Seckel D, Seikh MFH, Smith D, Stoffels J, Southall D, Terveer K, Toscano S, Tosi D, Van Den Broeck DJ, Van Eijndhoven N, Vieregg AG, Vischer J, Welling C, Williams DR, Wissel S, Young R, Zink A (2023)

Publication Type: Journal article

Publication year: 2023

Journal

DOI: 10.1017/jog.2023.72

Abstract

We recently reported on the radio-frequency attenuation length of cold polar ice at Summit Station, Greenland, based on bi-static radar measurements of radio-frequency bedrock echo strengths taken during the summer of 2021. Those data also allow studies of (a) the relative contributions of coherent (such as discrete internal conducting layers with sub-centimeter transverse scale) vs incoherent (e.g. bulk volumetric) scattering, (b) the magnitude of internal layer reflection coefficients, (c) limits on signal propagation velocity asymmetries ('birefringence') and (d) limits on signal dispersion in-ice over a bandwidth of ∼100 MHz. We find that (1) attenuation lengths approach 1 km in our band, (2) after averaging 10 000 echo triggers, reflected signals observable over the thermal floor (to depths of ∼1500 m) are consistent with being entirely coherent, (3) internal layer reflectivities are ≈-60-70 dB, (4) birefringent effects for vertically propagating signals are smaller by an order of magnitude relative to South Pole and (5) within our experimental limits, glacial ice is non-dispersive over the frequency band relevant for neutrino detection experiments.

Authors with CRIS profile

Involved external institutions

Universiteit Gent (UGent) / Ghent University Belgium (BE) University of Delaware (UDEL) United States (USA) (US) University of Kansas (KU) United States (USA) (US) Vrije Universiteit Brussel (VUB) Belgium (BE) University of Wisconsin - Madison United States (USA) (US) Uppsala University Sweden (SE) Michigan State University United States (USA) (US) University of Chicago United States (USA) (US) Université libre de Bruxelles (ULB) / Free University of Brussels Belgium (BE) Pennsylvania State University (Penn State) United States (USA) (US) Deutsches Elektronen-Synchrotron DESY Germany (DE) Whittier College United States (USA) (US) The University of Alabama United States (USA) (US) University of Nebraska-Lincoln United States (USA) (US) Radboud University Nijmegen Netherlands (NL) Ohio State University United States (USA) (US)

How to cite

APA:

Aguilar, J.A., Allison, P., Besson, D., Bishop, A., Botner, O., Bouma, S.,... Zink, A. (2023). Radiofrequency ice dielectric measurements at Summit Station, Greenland. Journal of Glaciology. https://dx.doi.org/10.1017/jog.2023.72

MLA:

Aguilar, Juan Antonio, et al. "Radiofrequency ice dielectric measurements at Summit Station, Greenland." Journal of Glaciology (2023).

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