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Remote Hydroacoustic Detection of an Airplane Crash

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Abstract

On 9 April 2019, an F-35A fighter jet of the Japan Air Self-Defense Force was lost offshore northern Honshu, Japan. Underwater sound phases deemed to be associated with the crash of the aircraft were recorded by a nearby seafloor observatory and the International Monitoring System hydrophone station at Wake Island. A location and origin time estimate is derived by combining the two datasets and distinctly matches the last known position of the aircraft.

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  • 20 September 2022

    In this article the first author's email address has been updated.

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Correspondence to Dirk Metz.

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Appendix A - Hydrophone triplet layout

Appendix A - Hydrophone triplet layout

See Fig. 4.

Fig. 4
figure 4

Schematic setup of the northern hydrophone triplet at IMS station H11, Wake Island. The two triplets are positioned at average depths of 727 (H11N) and 739 m (H11S), i.e., in close proximity to the local SOFAR channel axis. Seafloor depths at H11N and H11S are circa 1430 and 1170 m, respectively. Annual mean water column data are sampled from the 2009 World Ocean Atlas (Locarnini et al., 2010; Antonov et al., 2010); sound speed is then given following Dushaw et al. (1993)

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Metz, D., Obana, K. & Fukao, Y. Remote Hydroacoustic Detection of an Airplane Crash. Pure Appl. Geophys. 180, 1343–1351 (2023). https://doi.org/10.1007/s00024-022-03117-6

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