Tuesday 6 September 2011

Seismic Sun?




There seems to be a relationship between solar activity and earthquakes. We will explore how sunspots, solar flares and solar events from the sun influences seismic activity on Earth. In particular, we will see how an increase in solar activity effects seismic activity on Earth.

The Sun and the Solar Cycle

The Sun
In order to for us to establish a link between solar activity and earthquakes, we must first briefly examine the nature of the Sun. The Sun is a G-type yellow-dwarf that contains over 99% of the mass of the Solar System. The Sun contains hot plasma that is primarily made up of hydrogen and helium. The Sun is powered by nuclear fusion and temperatures at its center can reach millions of degrees Celsius.
The Sun also has intense magnetic fields which extend far out into space. A process known as differential rotation occurs within the sun where the Sun spins faster at the equator than at the poles. This causes the magnetic field lines of the Sun to twist and erupt from the surface as magnetic field loops causing sunspots and solar prominences. The process is also responsible for the Sun's 11-year cycle, called the solar cycle, where greater activity of the Sun is observed as the magnetic poles reverse themselves. The solar cycle has a major impact on the Earth's climate as well as the oceans and is thought to trigger earthquakes as well.

Read more: http://www.brighthub.com/science/space/articles/114114.aspx#ixzz1XAJP5sRz

No comments:

Post a Comment