`DSF' theory on mechanism of gushing anomaly in oil and water wells before an earthquake. I. Observation of gushing and causative hypothesis

Details `DSF' theory on mechanism of gushing anomaly in oil and water wells before an earthquake. I. Observation of gushing and causative hypothesis `DSF' theory on mechanism of gushing anomaly in oil and water wells before an earthquake. I. Observation of gushing and causative hypothesis

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pepi...54..313l&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 54, Issue 3-4, p. 313-319.

Physics

2

Scientific paper

The gushing anomaly that occurs prior to an earthquake, a short-term abnormal phenomenon of common occurrence, is simply described here. It has been observed by an automatic recording float gauge that has continually operated for nine years at Wei-jiaquan No. 5 well in Miquan County of Xinjiang Province (XMW-5 well). During this period, four abnormal events have been recorded which show that the water level curve of the anomaly has a characteristic shape.
By analysing the characteristic shape of the water level curve, we believed that an unknown rapidly varying stress field operated prior to an earthquake, thereby compressing the aquifer bed to cause an elastic deformation seepage-flow effect. Thus, a two-dimensional model of a radially unsteady seepage flow within a single aquifer bed, under variable tectonic stress, and with a rectangular pulse, was proposed. The abnormal water-level curve was then quantitatively synthesized on the basis of the above theory. The causative hypothesis (DSF) is based on the elastic deformation seepage-flow (DSF) theory.

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