在爱琴海，Santorini 与附近水下的 Kolumbo 提供了第二个耦合系统的验证案例。Santorini 约在公元前 1600 年的毁灭性爆发与米诺斯海上文明衰亡相关；今天在湾内仍有两个小火山正在生长，而 Kolumbo 可产生严重海啸与窒息性气雾。德国与希腊合作的 Multi-Marex 计划于 2024 年开始，在陆地与海底部署密集感测器。2025 年1月底，区域发生大规模地震群，导致居民撤离。几周后活动减弱，且 Santorini 与 Kolumbo 均出现收缩。
机器学习辅助分析解释了事件序列：一股岩浆脉从更深处上升至约 3 公里，但动能不足以破表面，随后从另一个地壳岩浆库中借用了熔融物，该库可能与 Kolumbo 有关，且该库在排空时明显收缩。团队将此视为进一步的耦合证据，并希望由此改善预报能力。其他地区的研究者在中非与日本也在寻找更多耦合火山对。如今这类系统被视为可交替或同步喷发，亦可能产生不同岩浆与喷发型态，并涉及比预期更深、更长距离的岩浆输送路径，因此预报必须纳入高变异性。
A magmatic circulation model beneath Hawai‘i is centered on the Pāhala sill complex, a stack of horizontal reservoirs feeding two branches toward Kīlauea and Mauna Loa. Ross and Roman said the original discovery was shocking: the pair shared a deeper source yet erupted chemically distinct lavas. Seismic data nevertheless showed coupling. Their behavior is not fixed. In some intervals one volcano erupts while the other pauses, likely because one draws shared magma too rapidly. At other times both erupt together when the shared magmatic system becomes strongly recharged and both can “get juiced.” Thus coupling does not imply identical timing or magma type.
In the Aegean, Santorini and nearby submerged Kolumbo provide a second coupled-system test case. Santorini’s catastrophic eruption around 1600 BCE is linked to the end of Minoan seafaring power; today two small volcanoes are growing in the bay, while Kolumbo can generate severe tsunamis and suffocating gas clouds. A German-Greek program, Multi-Marex, began in 2024 deploying dense sensors on land and seafloor. At the end of January 2025, large earthquake swarms struck, causing residents to flee. Activity waned after weeks, and both Santorini and Kolumbo showed contraction.
Machine-learning-assisted analysis explained the sequence: a magma pulse rose from depth to roughly 3 km but lacked momentum to break the surface, then drew melt from another reservoir in the crust, likely linked to Kolumbo. That reservoir shrank as it drained. The team sees this as further evidence of coupling and hopes it improves forecasting. Elsewhere, researchers in Central Africa and Japan are identifying additional coupled volcano pairs. They now treat such systems as able to alternate or erupt simultaneously, to generate dissimilar lava and eruption styles, and to involve deeper-than-expected connections plus long magma transport distances, so forecasting must account for variable magma transfer rather than assuming twin volcanoes behave in lockstep.