I have been doing some research into global warming, and I was curious as to whether or not increasing the temperature of the oceans would affect tsunamis to any significant degree.
My gut tells me that adding more energy into the water would make the tsunami worse, but tsunamis are caused by earthquakes, not by heating like a hurricane. On the other hand, increasing heat would reduce the density of the water, which might make them less severe.
Would these forces actually affect the tsunami? Which one would win, or would they cancel out? Or am I completely missing something obvious?