article_snippet.sent: Scientists are some of the most violent events on the planet, throwing out millions of tonnes of gas, ash and molten rock with each eruption.
article_snippet.sent: A new study has shown that these submarine eruptions follow regular cycles that can range from just a couple of weeks to 100,000 years.
article_snippet.sent: The researchers claim these submarine eruptions appear to be linked to changes in the Earth's orbit that occur over time.
article_snippet.sent: Surprisingly The researchers also found that these submarine eruptions also appear to be clustered during the first six months of each year.
article_snippet.sent: Others erupt with explosive results.