最近几年，由于频谱激电在油气勘探、金属矿勘探和环境地球物理方面的潜在应用，频谱激电研究又火起来了。作为一直从事频谱激电研究的老兵，应法国科学院Revil教授请求对我在频谱激电方面的工作做了介绍。下面是2016年年初给Revil教授回信的主要内容： It’s my great pleasure to hear from you. I hope you have a great year in 2016. The year 2016 belongs to monkey year according to Chinese culture. Kind people in monkey year will be very smart and clever. Anyway, I summary my contribution to IP research. I developed method and instrument for SIP research and application. I put forward relative phase spectrum measurement method in SIP about 10 year ago. The relative phase spectrum measurement can remove EM coupling, capacitive coupling, and synchronization error in phase measurement of SIP. The relative phase spectrum measurement is the key for the successful application of SIP in the field. Then I developed a distributed SIP acquisition system with 800 channels based on ZigBee sensor network and GPS four years ago. It’s the biggest SIP system in the world to my knowledge. I used this SIP system in China for a lot of projects and it is very successful in mineral exploration. I also developed a SIP system for laboratory usage. This system can measure accurate SIP response of rock and ore sample with ultra-low impedance and ultra- high impedance. The highest impedance of sample can be great than 10 G ohm. Therefore, it can make SIP response of sample with very few water content. Now I am developing a SIP system based on wired network. This system is much cheap than the SIP system based on wireless communication targeted for mineral exploration in mountain area. The wired SIP system adopt the basic idea of cabled seismic acquisition. It reduce capacitive coupling that exist in current SIP system for engineering usage. The wired SIP system designed by me and my team achieved ultra- high synchronization accuracy which is vital important for signal to noise enhancement. The systems developed by me adopt ultra-low noise electrical element and state-of-art signal processing method. We can acquire good quality SIP data in area with strong noise or interference. 今年，我们将在频谱激电方面加大勘探力度和基础研究投入，使频谱激电成为矿业勘探的高效物探手段。我们有大量高质量勘探数据和岩矿石标本频谱激电数据，目前正和国外的多个团队开展合作。期待国内的同行也加入，大家共同推进频谱激电的发展。
1985年发表的论文，信息如下： G. R. Olhoeft (1985).”Low-frequency electrical properties.” Geophysics, 50(12), 2492-2503. doi: 10.1190/1.1441880 In the interpretation of induced polarization data, it is commonly assumed that metallic mineral polarization dominantly or solely causes the observed response. However, at low frequencies, there is a variety of active chemical processes which involve the movement or transfer of electrical charge. Measurements of electrical properties at low frequencies (such as induced polarization) observe such movement of charge and thus monitor many geochemical processes at a distance. Examples in which this has been done include oxidation‐reduction of metallic minerals such as sulfides, cation exchange on clays, and a variety of clay‐organic reactions relevant to problems in toxic waste disposal and petroleum exploration. By using both the frequency dependence and nonlinear character of the complex resistivity spectrum, these reactions may be distinguished from each other and from barren or reactionless materials Read More: http://library.seg.org/doi/abs/10.1190/1.1441880 前5年只获得8次引用，平均每年获得1.6次引用。 James A. Tyburczy , Jeffery J. Roberts . (1990) Low frequency electrical response of polycrystalline olivine compacts: Grain boundary transport. Geophysical Research Letters 17 , 1985-1988. Online publication date: 1-Oct-1990. CrossRef Andrew K. Jonscher . (1990) Admittance spectroscopy of systems showing low-frequency dispersion. Electrochimica Acta 35 , 1595-1600. Online publication date: 1-Oct-1990. CrossRef J.R. Wait . 1989. COMPLEX RESISTIVITY OF THE EARTH. Progress in Electromagnetics Research, 1-173. CrossRef R. S. SMITH , P. W. WALKER , B. D. POLZER , G. F. WEST . (1988) THE TIME-DOMAIN ELECTROMAGNETIC RESPONSE OF POLARIZABLE BODIES: AN APPROXIMATE CONVOLUTION ALGORITHM1. Geophysical Prospecting 36 :10.1111/gpr.1988.36.issue-7, 772-785. Online publication date: 1-Oct-1988. CrossRef Richard S. Smith , G. F. West . (1988) An explanation of abnormal TEM responses: coincident-loop negatives, and the loop effect.. Exploration Geophysics 19 :3, 435-446. Online publication date: 1-Sep-1988. Abstract | PDF (1210 KB) | PDF w/Links (747 KB) A. Duba , E. Huengest , G. Nover , G. Will , H. Jodicke . (1988) Impedance of black shale from Munsterland 1 borehole: an anomalously good conductor?. Geophysical Journal International 94 , 413-419. Online publication date: 1-Sep-1988. CrossRef Alan D. Chave , John R. Booker . (1987) Electromagnetic induction studies. Reviews of Geophysics 25 , 989. Online publication date: 1-Jan-1987. CrossRef David A. Lockner , James D. Byerlee . (1986) Changes in complex resistivity during creep in granite. Pure and Applied Geophysics PAGEOPH 124 , 659-676. Online publication date: 1-Jan-1986. CrossRef Read More: http://library.seg.org/doi/abs/10.1190/1.1441880 2014年获得9次引用 2013年获得14次引用，大大超过了论文发表后5年内引用数的总和。 2012年获得7次引用 2011年获得16次引用 2010年获得9次引用 最近5年获得55次引用，大约等于论文发表后5年内引用数的7倍。 引用数激增的原因在于近年来出现了高精度岩石物理性质测量仪器，用新仪器可以发现以前无法观测到的现象，岩石物理又火起来了。
标签: 岩石物理
