The United States maintains a Volcano Disaster Assistance Program, which includes geologists, volcanologists and other experts in all aspects of volcano hazard assessment, monitoring and volcano-emergency response. Many governments have similar teams in place. Would-be amateur volcano hunters can consult the USG’s handy guide to volcanoes, including a FAQ about eruptions portrayed in movies (turns out scientists can’t actually drive across bubbling lava in real life). But the guidelines for underwater volcano-generated tsunamis are still being written.