Fiber‐Optic Airplane Seismology on the Northeast Greenland Ice Stream

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Fiber‐Optic Airplane Seismology on the Northeast Greenland Ice Stream. / Fichtner, Andreas; Hofstede, Coen; N. Kennett, Brian L.; Nymand, Niels F.; Lauritzen, Mikkel L.; Zigone, Dimitri; Eisen, Olaf.

In: The Seismic Record, Vol. 3, No. 2, 16.05.2023, p. 125-133.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Fichtner, A, Hofstede, C, N. Kennett, BL, Nymand, NF, Lauritzen, ML, Zigone, D & Eisen, O 2023, 'Fiber‐Optic Airplane Seismology on the Northeast Greenland Ice Stream', The Seismic Record, vol. 3, no. 2, pp. 125-133. https://doi.org/10.1785/0320230004

APA

Fichtner, A., Hofstede, C., N. Kennett, B. L., Nymand, N. F., Lauritzen, M. L., Zigone, D., & Eisen, O. (2023). Fiber‐Optic Airplane Seismology on the Northeast Greenland Ice Stream. The Seismic Record, 3(2), 125-133. https://doi.org/10.1785/0320230004

Vancouver

Fichtner A, Hofstede C, N. Kennett BL, Nymand NF, Lauritzen ML, Zigone D et al. Fiber‐Optic Airplane Seismology on the Northeast Greenland Ice Stream. The Seismic Record. 2023 May 16;3(2):125-133. https://doi.org/10.1785/0320230004

Author

Fichtner, Andreas ; Hofstede, Coen ; N. Kennett, Brian L. ; Nymand, Niels F. ; Lauritzen, Mikkel L. ; Zigone, Dimitri ; Eisen, Olaf. / Fiber‐Optic Airplane Seismology on the Northeast Greenland Ice Stream. In: The Seismic Record. 2023 ; Vol. 3, No. 2. pp. 125-133.

Bibtex

@article{8a3e515015c04aefb963b242806c4170,
title = "Fiber‐Optic Airplane Seismology on the Northeast Greenland Ice Stream",
abstract = "We present distributed fiber‐optic sensing data from an airplane landing near the EastGRIP ice core drilling site on the Northeast Greenland Ice Stream. The recordings of exceptional clarity contain at least 15 easily visible wave propagation modes corresponding to various Rayleigh, pseudoacoustic, and leaky waves. In the frequency range from 8 to 55 Hz, seven of the modes can be identified unambiguously. Based on an a priori firn and ice model that matches P‐wave dispersion and the fundamental Rayleigh mode, a Backus–Gilbert inversion yields an S‐wavespeed model with resolution lengths as low as a few meters and uncertainties in the range of only 10 m/s. An empirical scaling from S wavespeed to density leads to a depth estimate of the firn–ice transition between 65 and 71 m, in agreement with direct firn core measurements. This work underlines the potential of distributed fiber‐optic sensing combined with strong unconventional seismic sources in studies of firn and ice properties, which are critical ingredients of ice core climatology, as well as ice sheet dynamics and mass balance calculations.",
author = "Andreas Fichtner and Coen Hofstede and {N. Kennett}, {Brian L.} and Nymand, {Niels F.} and Lauritzen, {Mikkel L.} and Dimitri Zigone and Olaf Eisen",
year = "2023",
month = may,
day = "16",
doi = "10.1785/0320230004",
language = "English",
volume = "3",
pages = "125--133",
journal = "The Seismic Record",
issn = "2694-4006",
publisher = "Seismological Society of America",
number = "2",

}

RIS

TY - JOUR

T1 - Fiber‐Optic Airplane Seismology on the Northeast Greenland Ice Stream

AU - Fichtner, Andreas

AU - Hofstede, Coen

AU - N. Kennett, Brian L.

AU - Nymand, Niels F.

AU - Lauritzen, Mikkel L.

AU - Zigone, Dimitri

AU - Eisen, Olaf

PY - 2023/5/16

Y1 - 2023/5/16

N2 - We present distributed fiber‐optic sensing data from an airplane landing near the EastGRIP ice core drilling site on the Northeast Greenland Ice Stream. The recordings of exceptional clarity contain at least 15 easily visible wave propagation modes corresponding to various Rayleigh, pseudoacoustic, and leaky waves. In the frequency range from 8 to 55 Hz, seven of the modes can be identified unambiguously. Based on an a priori firn and ice model that matches P‐wave dispersion and the fundamental Rayleigh mode, a Backus–Gilbert inversion yields an S‐wavespeed model with resolution lengths as low as a few meters and uncertainties in the range of only 10 m/s. An empirical scaling from S wavespeed to density leads to a depth estimate of the firn–ice transition between 65 and 71 m, in agreement with direct firn core measurements. This work underlines the potential of distributed fiber‐optic sensing combined with strong unconventional seismic sources in studies of firn and ice properties, which are critical ingredients of ice core climatology, as well as ice sheet dynamics and mass balance calculations.

AB - We present distributed fiber‐optic sensing data from an airplane landing near the EastGRIP ice core drilling site on the Northeast Greenland Ice Stream. The recordings of exceptional clarity contain at least 15 easily visible wave propagation modes corresponding to various Rayleigh, pseudoacoustic, and leaky waves. In the frequency range from 8 to 55 Hz, seven of the modes can be identified unambiguously. Based on an a priori firn and ice model that matches P‐wave dispersion and the fundamental Rayleigh mode, a Backus–Gilbert inversion yields an S‐wavespeed model with resolution lengths as low as a few meters and uncertainties in the range of only 10 m/s. An empirical scaling from S wavespeed to density leads to a depth estimate of the firn–ice transition between 65 and 71 m, in agreement with direct firn core measurements. This work underlines the potential of distributed fiber‐optic sensing combined with strong unconventional seismic sources in studies of firn and ice properties, which are critical ingredients of ice core climatology, as well as ice sheet dynamics and mass balance calculations.

U2 - 10.1785/0320230004

DO - 10.1785/0320230004

M3 - Journal article

VL - 3

SP - 125

EP - 133

JO - The Seismic Record

JF - The Seismic Record

SN - 2694-4006

IS - 2

ER -

ID: 362402059