论文标题
使用极化分析，在没有速度模型的情况下定位北风爆炸
Locating the Nordstream explosions without a velocity model using polarization analysis
论文作者
论文摘要
波罗的海北风管道泄漏之前的地震事件被解释为海床上的爆炸，很可能是人造的。我们使用最初为Marsquakes开发的基于极化的位置方法来定位没有地下速度模型的源区域。我们表明，可以明确地归因于在海面上观察到的甲烷羽状物。这两个最大的事件可以使用该方法使用，使用位于源周围的4个和5个站点，位置不确定性为30公里和10x60km。我们可以进一步表明，这两个事件在初次爆炸后至少十分钟发射了地震能，这表明水柱或降压管道的共鸣。
The seismic events that preceded the leaks in the Nordstream pipelines in the Baltic Sea have been interpreted as explosions on the seabed, most likely man-made. We use a polarization-based location method initially developed for marsquakes to locate the source region without a subsurface velocity model. We show that the 2 largest seismic events can be unambiguously attributed to the methane plumes observed on the sea surface. The two largest events can be located with this method, using 4 and 5 stations located around the source, with location uncertainties of 30km and 10x60km. We can further show that both events emitted seismic energy for at least ten minutes after the initial explosion, indicative of resonances in the water column or the depressurizing pipeline.
