How does HAARP cause earthquakes?

I have asked his question in other threads and have gotten no real responses. I have been insulted and cursed at but no one can answer the question so, how does HAARP cause earthquakes?

Lame youtube videos and websites that say nothing are not what I am looking for. Can anyone supply actual scientific reasons? Here are some questions to ponder while thinking of answers.

1) HAARPs total radiated power is 3.6 megawatts at most. There are losses in propogation. How much energy would reach a target thousands of miles away?

2) HAARP points straight up. How does it "hit" a target thousands of miles away?

3) How big of an area does the beam cover when it reaches the target area?

4) Supposing the beam does reach the target area, then what? What does that energy do next? How long does HAARP have to stay on a target before it causes an earthquake? 5 minutes, 10 minutes, an hour? How long? And what does that energy do?

5) How does anyone know where to point the beam? In otherwords, how do we know when an earthquake is about to occur?

6) How much energy does it take to cause an earthquake?

7) When I look at the HAARP data I find that HAARP was not event transmitting the days of the Chile and Haiti earthquakes. So how did it do anything?

Does anyone have a response? I am looking for scientific journal articles and verifiable data. Again, nothing from youtube and nothing about Tesla's earthquake machine. That is just bogus.