Hartley spectral analysis of self-potential anomalies caused by a 2-D horizontal circular cylinder     

Mansour A. Al-Garni  Narasimman Sundararajan 《Arabian Journal of Geosciences》2012,5(6):1341-1346

The real spectral analysis of SP anomalies due to 2-D horizontal circular cylinder is carried out using Hartley transform. The Hartley transform is an alternate means of realizing spectral analysis in real domain unlike the Fourier spectral analysis. The Hartley transform yields a straightforward interpretation of SP anomalies caused by horizontal circular cylinder wherein all the parameters are derived independently as a function of frequency. A theoretical example illustrates the procedure. The effect of random noise, up to 10% of white Gaussian noise, on the interpretation scheme was also studied and found to be of negligible. The field example of the ??Sulleymonkey?? anomaly in the Ergoni copper district, Turkey exemplifies the applicability of the proposed method.  相似文献   

Groundwater recharge to ophiolite aquifer in North Oman: constrained by stable isotopes and geochemistry     

Osman Abdalla  Rashid Al Abri  Khadija Semhi  Talal Al Hosni  Mansour Amerjeed  Ian Clark 《Environmental Earth Sciences》2016,75(15):1117

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Lack of mitochondrial genetic structure in the endangered giant clam populations of Tridacna maxima (Bivalvia: Cardiidae: Tridacninae) across the Saudi Arabian coast     

Ben Othmen Abdelwahe  Abhary Mohame  Deli Temim  Ouanes Zouhour  Alhuwaiti Nour  Dimassi Najet  Mansour Lamjed 《海洋学报(英文版)》2020,39(2):28-37

The present investigation focuses on population genetic structure analysis of the endangered giant clam species Tridacna maxima across part of the Red Sea,with the main aim of assessing the influence of postulated potential barriers to gene flow(i.e.,particular oceanographic features and marked environmental heterogeneity)on genetic connectivity among populations of this poorly dispersive bivalve species.For this purpose,a total of 44 specimens of T.maxima were collected from five sampling locations along the Saudi Arabian coast and examined for genetic variability at the considerably variable mitochondrial gene cytochrome c oxidase I(COI).Our results revealed lack of population subdivision and phylogeographic structure across the surveyed geographic spectrum,suggesting that neither the short pelagic larval dispersal nor the various postulated barriers to gene flow in the Red Sea can trigger the onset of marked genetic differentiation in T.maxima.Furthermore,the discerned shallow COI haplotype genealogy(exhibiting high haplotype diversity and low nucleotide diversity),associated with recent demographic and spatial expansion events,can be considered as residual effect of a recent evolutionary history of the species in the Red Sea.  相似文献