Meteoroid studies on DAS and large-N networks: data sets ...
We present an outstanding record of local, dense Large-N seismic and distributed acoustic sensor observations of a meteoroid from July 2, 2021 in Iceland. Our dataset includes high-quality observations from seven small aperture arrays of few hundred meters, an infrasound array, and a rotational stat...
Main Authors: | , , , , , , , , , , , , , , , , , |
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Format: | Dataset |
Language: | unknown |
Published: |
GFZ Data Services
2022
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Subjects: | |
Online Access: | https://dx.doi.org/10.5880/gfz.2.2.2022.002 https://dataservices.gfz-potsdam.de/panmetaworks/showshort.php?id=9e512662-f970-11ed-95b8-f851ad6d1e4b |
Summary: | We present an outstanding record of local, dense Large-N seismic and distributed acoustic sensor observations of a meteoroid from July 2, 2021 in Iceland. Our dataset includes high-quality observations from seven small aperture arrays of few hundred meters, an infrasound array, and a rotational station, all located within the distance range of 300 km. The high-frequency data show a variety of different phases associated with the source process along the atmospheric trajectory, including impulsive negative 1 first ground motions, a complex coda wave train about 2.5 s long thereafter, an azimuth-dependent stopping phase with reversed polarity between 1-25 s after the first arrival, which is resolved over only a few kilometers. The ground motion amplitude between the first and last arrivals is generally elevated. We associate the waveform in the 2.5 s coda with meteor-atmosphere interactions and nonlinear plasma processes that produce an oscillating shock-wave source pulse. Our data suggest a small ... |
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