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- Title
Types and genesis of induced polarization anomalies in the water-rich structures of the Taian karst area.
- Authors
Chen, Yi-xiang; Gan, Fu-ping; Chen, Yu-ling; Wu, Cong-hui; Ke, Pan; Wei, Ji-yi; Lu, Chen-jie
- Abstract
From December 2010 to April 2011, agricultural production in North China and Huang-Huai basin experienced difficulties because of severe drought. Based on samples from the development of deep karst groundwater resources, a set of laws has been established to reflect the types and genesis of induced polarization (IP) anomalies in a range of water-rich karst structures in Taian area. The curves of IP anomalies in the water-rich structures can be classified into ramps, slow downs, low-resistance platforms and low-resistance V patterns. IP anomalies observed in apparent resistivities contours can be classified as low-resistance steps, low-resistance gradients and low-resistance U patterns. In water-rich areas hosted mainly in caves, IP anomalies include low-apparent resistivity, low-visible polarization, low half decay time, low attenuation and low multi-parameter synchroneity. These water-rich areas mainly consist of fault structures, where the IP anomalies have a low-apparent resistivity and low-vision polarization, and exhibit relatively long half decay time, maximum attenuation value exceptions, apparent resistivities and multi-parameter 'reverse phase' anomalies.
- Subjects
CHINA; KARST; INDUCED polarization; AGRICULTURAL productivity; WATER supply; WATER consumption
- Publication
Environmental Earth Sciences, 2015, Vol 74, Issue 2, p1047
- ISSN
1866-6280
- Publication type
Article
- DOI
10.1007/s12665-015-4065-8