[1/4] Estonian Navy conducts an undersea communications cable survey after a subsea gas pipeline and a telecommunications cable connecting Finland and Estonia under the Baltic Sea was damaged, in the Gulf of Finland, October 10, 2023. Estonian Navy Handout/Handout via REUTERS/File Photo Acquire Licensing RightsCOPENHAGEN, Oct 13 (Reuters) - Nordic and Baltic seismologists said that they had detected blast-like waves on Sunday when a Baltic Sea gas pipeline ruptured but that the data was not strong enough to determine whether explosives were involved. Waves measured after explosions tend to leave different signals to those sent out by earthquakes, the seismologists said. But processing the data had separated the seismic waves from the background noise even though stormy weather in the Gulf of Finland, an arm of the Baltic Sea stretching eastwards into Russian waters, had complicated the analysis, seismologists said. In 2022, the Nord Stream gas pipelines under the Baltic Sea between Russia and Germany were damaged by explosions that authorities have determined were caused by deliberate acts of sabotage.

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Persons: Baltic seismologists, Anne Strommen Lycke, NORSAR, seismologists, seismologist Bjorn Lund, Seismologist Jari Kortstrom, Heidi Soosalu, didn't, NORSAR's Lycke, Johannes Birkebaek, Louise Breusch Rasmussen, Ilze, Terje Solsvik Organizations: Estonian Navy, REUTERS, Rights, Reuters, Finland's National Bureau of Investigation, Sweden's University of Uppsala, University of Helsinki, Thomson Locations: Finland, Estonia, Baltic, Gulf of Finland, Handout, Rights COPENHAGEN, Finland's, Russia, Germany, Nord