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North Korea - Astrophysics Data System

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Last Updated: 07 September 2022

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Relative Seismic Source Scaling Based on Pn Observations from the North Korean Underground Nuclear Explosions

Based on regional seismic data in South Korea, we determine yields and source depths for the six North Korean underground nuclear explosions in 2006, 2009, 2013, 2016, and 2017. Pn's measurable source scaling results are used to calculate event yields and depths for each event pair based on estimated explosion source models by Mueller and Murphy, Denny and Johnson, Walter and Ford, and Walter and Ford. These simulated source scaling spectra for Pn provide a basis for a grid search source scaling algorithm for Pn. Both the long-period and corner frequency estimations show good agreement between theoretical and observed spectral ratios matching both the long-term and corner frequency standards, as well as the DJ91 model estimates, which estimate lower yields due to a change in corner frequency scaling.

Source link: https://ui.adsabs.harvard.edu/abs/2022BuSSA.112.1960P/abstract

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions