Radiofrequency ice dielectric measurements at Summit Station, Greenland

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...

Full description

Bibliographic Details
Published in:Journal of Glaciology
Main Authors: Aguilar, Juan Antonio, Allison, Patrick, Besson, Dave, Bishop, Abby, Botner, Olga, Bouma, Sjoerd, Buitink, Stijn, Cataldo, Maddalena, Clark, Brian A., Couberly, Kenny, Curtis-Ginsberg, Zach, Dasgupta, Paramita, de Kockere, Simon, de Vries, Krijn D., Deaconu, Cosmin, Duvernois, Michael A., Eimer, Anna, Glaser, Christian, Hallgren, Allan, Hallmann, Steffen, Hanson, Jordan Christian, Hendricks, Bryan, Henrichs, Jakob, Heyer, Nils, Hornhuber, Christian, Hughes, Kaeli, Karg, Timo, Karle, Albrecht, Kelley, John L., Korntheuer, Michael, Kowalski, Marek, Kravchenko, Ilya, Krebs, Ryan, Lahmann, Robert, Latif, Uzair, Mammo, Joseph, Marsee, Matthew J., Meyers, Zachary S., Michaels, Kelli, Mulrey, Katharine, Muzio, Marco, Nelles, Anna, Novikov, Alexander, Nozdrina, Alisa, Oberla, Eric, Oeyen, Bob, Plaisier, Ilse, Punsuebsay, Noppadol, Pyras, Lilly, Ryckbosch, Dirk, Scholten, Olaf, Seckel, David, Seikh, Mohammad Ful Hossain, Smith, Daniel, Stoffels, Jethro, Southall, Daniel, Terveer, Karen, Toscano, Simona, Tosi, Delia, van den Broeck, Dieder J., van Eijndhoven, Nick, Vieregg, Abigail G., Vischer, Janna Z., Welling, Christoph, Williams, Dawn R., Wissel, Stephanie, Young, Robert, Zink, Adrian
Format: Article in Journal/Newspaper
Language:English
Published: 2023
Subjects:
Physics and Astronomy
Earth and Environmental Sciences
NEUTRINO DETECTOR
RADAR ATTENUATION
PERFORMANCE
ANTARCTICA
ABSORPTION
SCATTERING
DESIGN
SHELF
Arctic glaciology
ice physics
radio-echo sounding
Antarc*
Antarctica
Greenland
Journal of Glaciology
South pole
Online Access:https://biblio.ugent.be/publication/01J08F660KAQ37QS82K6PMCV1S
http://hdl.handle.net/1854/LU-01J08F660KAQ37QS82K6PMCV1S
https://doi.org/10.1017/jog.2023.72
https://biblio.ugent.be/publication/01J08F660KAQ37QS82K6PMCV1S/file/01J08F75QTN5G3PQ2RWAPVYECJ
Description
Summary: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 transversescale) 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 similar to 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 similar to 1500 m) are consistent with being entirely coherent, (3) internal layer reflectivities are approximate to-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.

Similar Items