00:04Earthquakes are caused when our planet's tectonic plates shift, rumbling and shaking large parts
00:08of Earth. But waves in our oceans also create seismic activity, and experts say they're
00:13getting stronger. The most energetic wave observations ebb at periodic intervals between
00:188 and 14 seconds, called secondary microseisms, caused when pressure changes on the seafloor.
00:24But there is another way of detecting them called the primary microseism process,
00:27measured by how waves push and pull on the floor of the ocean. Using these two forms of measurement,
00:32experts have discovered that since the late 1980s, 79% of all data-gathering sites have shown
00:38a highly significant and progressive increase in energy. This has revealed a global average increase
00:43of 0.27% each year until 2000, and then a 0.35% increase every year since then. And
00:50experts say
00:51this will likely continue as global warming does. But what does wave energy have to do with the
00:55planet's temperatures? According to the study, oceans are the primary way our planet cools itself,
01:00with the oceans capturing some 90% of that excess heat globally. That heat is energy, which can then
01:06turn into extreme swells in the ocean. The researchers say this should be yet another warning of the effects
01:11of climate change, and that we will likely see more intense waves and storms as global warming
01:16as global warming continues and sea levels rise.
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