it would not affect the earth in anyway because all volcanoes do is kill,hurt and destroy !
Volcanic activity, earth quakes, erosion, and wind.
This is known as an earthquake or as seismic activity.
Greenhouse gasses, Solar output changes, Orbital change, Volcanic activity, Plate tectonics.
This is known as an earthquake or as seismic activity.
Seismographs record seismic activity in volcanic regions as predictors of volcanic activity. Additionally, GPS instruments record the rise and fall in surface features which may indicate a possible building of magmatic pressure underground.
Some rocks are younger then the formation of the solar system because of changes caused by volcanic activity
This is known as an earthquake or as seismic activity.
Heat and/or pressure imparted by subsequent volcanic activity. Maybe a little bit of hydrothermal alteration and secondary mineralization latter on.
It depends. Usually, though it changes for each volcano and mountain ;) I think all were created at one time or another by volcanic activity.
Signs of an imminent volcanic eruption include increased earthquake activity, swelling of the volcanic cone, increased gas emissions, and changes in the composition of gas emissions. Monitoring these signs can help predict and warn of an eruption.
Because it affects more people and is easier to monitor and predict, and since it changes more, it is also more interesting to watch
cyclical lows in solar radiation, heightened volcanic activity, changes in the ocean circulation, an inherent variability in global climate, or decreases in the human population.