The Physical Precursors for the Ms 8.7 and Ms 8.5 Earthquakes in Indian Ocean

The precursors – the gestation process and the signal of impending earthquake - of the Indian Ocean Earthquake of Ms 8.7 are recorded, with a serious of specially made monitoring instruments, including instruments for stress, resonance, tilt and earth potential. The Recordings show that there are great differences for the stress in crust between before and after the earthquake of Ms 8.7 and that of Ms 8.5. This fact indicates the essential distinction regarding to the formation of these two
earthquakes. The causation of the tsunami is analyzed. The sign of underground material migration is also found in the gestation process of Ms 8.7 earthquake.

[Key words] stress instrument; resonance instrument; tilt instrument; earthquake precursor; signal of impending earthquake; tsunami; underground material migration

The pdf version of the above paper is attached for your reference. click here

Published by Engineering Science, July 2007, Vol.9 No.7, the academic journal of the Academy of Engineering Science of China:

Destructive Earthquakes Are Predictable

The Physical Model of Earthquake Gestation and the signal of Impending Quakes
Sun Wei (Beijing Precision Technology Co. Ltd, Beijing, 100098)

What is discussed here is that the earthquake precursor have their own physical model, which is divided into the load stage, the stage of stalemate , the unload stage ,the short stage before occurrence and the quake stage. Up till now, numerous earthquakes that occurred worldwide have proved that the quake-breeding physical model of destructive earthquakes may repeat and reappear. An analytic method is brought forward for tracing the information on the warning signs of an earthquake and predicting earthquakes
step by step. Also, earthquake prediction is practically divided into stages, making it possible to realize the predicting of destructive earthquakes.

Key words] destructive earthquake; quake-breeding physical model; signals before an earthquake; earthquake precursor

You can visit the Chinese version of his paper with titles of the illustrations in English at: http://sea3000.com/wenku/952.php

Both of these papers, and many papers by many other earthquake prediction practicing researchers indicate a cycle of both stress build-up à stress drop as well as temperature rise à temperature drop before the occurrence of earthquakes.

BEFORE MAGNITUDE 7.3 QUAKE ELECTROMAGNETIC ANOMALIES IN IONOSPHERE HAS BEEN DETECTED

AND AFTER

Region: MACQUARIE ISLAND REGION
> Geographic coordinates: 55.563S, 158.311E
> Magnitude: 7.3 Mw
> Depth: 10 km
> Universal Time (UTC): 12 Apr 2008 00:30:13
> Time near the Epicenter: 12 Apr 2008 11:30:13
> Local standard time in your area: 12 Apr 2008 08:30:13
>
> Location with respect to nearby cities:
> 127 km (79 miles) SSW (199 degrees) of Macquarie Island, Australia
> 1374 km (854 miles) SW (214 degrees) of Dunedin, New Zealand 1989 km
> (1236 miles) SSW (211 degrees) of WELLINGTON, New Zealand
>
>
> ADDITIONAL EARTHQUAKE PARAMETERS
> __________________________________________________
> event ID : US 2008qtae
> version : 7
> number of phases : 50
> rms misfit : 1.22 seconds
> horizontal location error : 10.3 km
> vertical location error : 0.0 km
> maximum azimuthal gap : 54 degrees
> distance to nearest station : 999.9 km
>
> Flinn-Engdahl Region Number = 167
>
> This event has been reviewed by a seismologist at NEIC
> For subsequent updates, maps, and technical information, see:
> http://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/us2008qtae.php
> or
> http://earthquake.usgs.gov/
>
> National Earthquake Information Center
> U.S. Geological Survey

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