Change In Geomagnetic Intensity Before Quake
Posted by Don in Hollister on October 22, 2003 at 16:52:53:

Hi John abd all. Here is something you may be interested in. Take Care…Don in creepy town

“The problem of earthquake prediction has been under intensive investigation for nearly forty years in Japan, China, and the U.S. Yet relatively little progress is made thus far. Our frustration over the surprising difficulty of earthquake prediction problem has recently led to a serious debate within the seismological community on predictability of earthquakes.”

“Some people argued that earthquakes are inherently unpredictable. Yet others believe that earthquake prediction is possible. They maintain that our present inability to predict earthquakes is partly due to the inherent characteristics of earthquakes and partly to an incomplete understanding of the earthquake process. At the heart of the debate is the question on whether there are recognizable precursors of earthquakes? What could be precursors of impending earthquakes?”

“A multitude have been suggested, but it is not clear which, if any, may become reliable. Recently, three major new developments encourage us to propose the present project. First, clear changes in geomagnetic total intensity were observed at Liyutan Station at least one month before and after the 1999 Chi-Chi earthquake. This station was near the northern end of the Chelungpu fault that caused the earthquake. The second major new development prompting us to formulate the present project is the observation of clear electromagnetic precursors in the ionosphere by ionosondes and GPS data. The third major new development is the physical process recently proposed to explain the electromagnetic signals associated with earthquakes which were observed both on ground and in the ionosphere.” http://www.ss.ncu.edu.tw/~istep/eoverall.htm

“It was recently established and acknowledged by scientific community that there exist electromagnetic coupling between the processes within the earth crust and troposphere over the regions of seismic and volcanic activity and anomalous variations within the ionosphere several days/hours before the strong earthquake (volcanic eruptions).”
http://www.igeofcu.unam.mx/ionosferico/webindex/resume_EN.pdf



Follow Ups:
     ● a proposal, not a reviewed paper - John Vidale  20:43:01 - 10/22/2003  (19837)  (0)