Electric vs. Gas Heat. In a shift from the past, it is now less expensive to heat with electricity in Indiana than with natural gas. 1  The cost of gas has risen an average of 8% a year over the last 10 years, a huge increase.2  Gas heating will cost Central Indiana residents more than $1,800 this winter to heat a 1,800 sq. ft. home.lectric vs. Gas Heat. In a shift from the past, it is now less expensive to heat with electricity in Indiana than with natural gas. 1  The cost of gas has risen an average of 8% a year over the last 10 years, a huge increase.
Planetary boundary layer. The planetary boundary layer (PBL) is also known as the atmospheric boundary layer (ABL). It is the lowest part of the atmosphere and its behavior is directly influenced by its contact with the ground. It responds to surface forcings in a timescale of an hour or less.
A: MohoroviÄiÄ discontinuity. B: coreâmantle boundary (Gutenberg discontinuity) C: outer coreâinner core boundary. The coreâmantle boundary (CMB in the parlance of solid earth geophysicists) of the Earth lies between the planet's silicate mantle and its liquid iron-nickel outer core. This boundary is located at approximately 2891 km (1796 mi) depth beneath the Earth's surface. The boundary is observed via the discontinuity in seismic wave velocities at that depth. This discontinuity is due to the differences between the acoustic impedances of the solid mantle and the molten outer core.