G
Gordon R. J. Cooper
Researcher at University of the Witwatersrand
Publications - 135
Citations - 2948
Gordon R. J. Cooper is an academic researcher from University of the Witwatersrand. The author has contributed to research in topics: Amplitude & Wavelet. The author has an hindex of 22, co-authored 129 publications receiving 2530 citations. Previous affiliations of Gordon R. J. Cooper include Humboldt University of Berlin.
Papers
More filters
Journal ArticleDOI
Enhancing potential field data using filters based on the local phase
Gordon R. J. Cooper,Duncan Cowan +1 more
TL;DR: Some new phase-based filters are introduced which show improved performance as edge detectors in different ways and are demonstrated on synthetic gravity data and on magnetic data from Australia.
Journal ArticleDOI
Persistent millennial-scale climatic variability over the past 25,000 years in Southern Africa.
Karin Holmgren,Julia A. Lee-Thorp,Gordon R. J. Cooper,Katarina Lundblad,T. C. Partridge,Louis Scott,Riashna Sithaldeen,A. Siep Talma,P. D. Tyson +8 more
TL;DR: In this article, a new TIMS U-series dated stalagmite indicates speleothem growth from 24.4 to 12.7 and from 10.2 to 0.5.
Journal ArticleDOI
Edge enhancement of potential-field data using normalized statistics
Gordon R. J. Cooper,Duncan Cowan +1 more
TL;DR: In this article, the Normalized Standard Deviation (NSTD) filter is proposed for edge enhancement in potential-field data, which is based on ratios of the windowed standard deviation of derivatives of the field.
Journal ArticleDOI
Filtering using variable order vertical derivatives
Gordon R. J. Cooper,Duncan Cowan +1 more
TL;DR: The use of derivatives whose order varies across the dataset in a manner based on the local standard deviation of the data proved effective in resolving this problem.
Journal ArticleDOI
Comparing time series using wavelet-based semblance analysis
Gordon R. J. Cooper,Duncan Cowan +1 more
TL;DR: Semblance analysis based on the Fourier transform is demonstrated on synthetic datasets and on gravity and aeromagnetic data from the Vredefort Dome, South Africa.