GAPPA_: tady je to primo:
Question: What was the maximum displacement on the rupture surface between the plates ?
Answer: The maximum displacement estimated from a preliminary study of the seismic body waves is 20 meters.
Question: What was the maximum displacement of the sea bottom above the earthquake
source?
Answer: The displacement of the ground surface will be related to, but somewhat less than, the
displacement on the earthquake fault at depth. In places, the block of crust beneath the sea floor and overlying the causative fault is likely to have moved on the order of 10 meters to the west-southwest and to have been uplifted by several meters.
takze dokonce vertikalni posun mene nez 10m. (I to je hodne!)
a k rotacni ose:
Richard Gross at JPL has modeled the coseismic effect on the Earth's rotation of the December 26 earthquake in Indonesia by using the PREM model for the elastic properties of the Earth and the Harvard centroid-moment tensor solution for the source properties of the earthquake. The result is:
change in length of day: -2.676 microseconds
polar motion excitation X : -0.670 milliarcseconds
polar motion excitation Y: 0.475 milliarcseconds
Since the length of the day can be measured with an accuracy of about 20 microseconds, this model predicts that the change in the length-of-day caused by the earthquake is much too small to be observed. And, since the location of the earthquake was near the equator, this model predicts that the change in polar motion excitation is also rather small, being about 0.82 milliarcsecond in amplitude. Such a small change in polar motion excitation will also be difficult to detect.