GEOLOGY

Detailed explanation-1: -Volcanic eruptions on the ocean floor have a minimal effect on water temperature and are unlikely to contribute to global warming.

Detailed explanation-2: -Several eruptions during the past century have caused a decline in the average temperature at the Earth’s surface of up to half a degree (Fahrenheit scale) for periods of one to three years.

Detailed explanation-3: -The rise and fall of sea level as ocean heat content fluctuates. After volcanic eruptions, the Earth cools and the heat content in the ocean drops, ultimately lowering sea level. The solid blue line is the average sea level rise of climate model simulations that include volcanic eruptions.

Detailed explanation-4: -Although the temperature of water immediately adjacent to the submarine lava reaches 88 degrees C (190 degrees F), it degrades quickly to 27 degrees C (81 degrees F), only slightly above the ambient ocean temperature, within a few inches of the contact. This is not to say that the water isn’t hot.

Detailed explanation-5: -Volcanic ash suspended in water can clog and damage filters at intake structures and treatment plants and increase the wear on pumps used in water-delivery systems. pH Fresh volcanic ash typically lowers the pH of water.