Abstract
It is necessary to widen the registration amplitude range by controlling the influence factors on different time scales in order to analyze the properties of the dynamic system, forming the observed data of different-nature geophysical fields. The data on the volumetric strain variations, obtained in the scope of the PBO project (Parkfield, California), make it possible to construct the correct regression model for the external influence tidal and baric factors, as well as for the precipitation factor. The specific features of separation of the deformation components caused by the external sources, including the relation between the baric and tidal influences and the additional component reflecting the deformation process internal dynamics, are considered. The precipitation cumulative series has been considered in order to remove seasonal variations in the time range T ≤ 10 days. The estimated error of the amplitudes, determined based on the proposed component method, proved to be close to the initial data accuracy. An inhomogeneous complex structure of the geological environment in the zone adjacent to the San Andreas fault could be responsible for the difference in the character of the deformation processes and the response to the external influences at the considered observation points.
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Original Russian Text © A.S. Cherepantsev, 2013, published in Fizika Zemli, 2013, No. 6, pp. 49–66.
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Cherepantsev, A.S. Parameters of the response of the volumetric strain field to the external acting processes. Izv., Phys. Solid Earth 49, 796–812 (2013). https://doi.org/10.1134/S1069351313060013
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DOI: https://doi.org/10.1134/S1069351313060013