You'll want to make a call to the manufacturer on this one. That said, I'd put my money on an oxidation process at work on the surface -- how do you know this is coming through from underneath please?
earthquakes can be caused by either tectonic or volcanic. Tectonic earthquakes are caused by movement of tectonic plates underneath the earth surface. Volcanic earthquakes are caused by volcanic activities underneath or above earth's surface.
Florida has a lot of porous limestone underneath the surface. It can hold lots of water in underground aquifers. As groundwater flows through the limestone, it forms an eroded landscape called karst, known for caves, springs and sinkholes.
Volcanism is the build up of magma onto the surface of the earth or a solid-surface. The eruption is caused by pyroclastics and volcanic gases breaking through the surface called a vent.
the sun
running on grass affects a mans movement compared to running on a smooth surface because when he is running on grass, the grass and soil underneath the grass is soft and causes him to not run as fast as he could while on a flat, hard surface.
Adhesion is the property of water causes the curved surface
A surface wave is caused by an earthquake. When the earthquake causes primary, and secondary waves to interact, a surface wave is formed.
I get these strange electric pulses through my body. I wish I knew the cause. Its scary. I wonder if it is related to the Paxil or klonopin that I currently take??!
the causes
Gravity causes air to be denser near Earth's surface.
The refraction of light through water. Basically light travels through a surface such as water and the different light spectrums get broken down giving you the colors you see.
High pressure at the surface