Discrimination of Seafloor Sediment Properties by VWA

Authors: Lu, Bo; Li, Ganxian; Huang, Shaojian; Liu, Qiang

Source: Marine Georesources and Geotechnology, Volume 25, Number 1, January 2007 , pp. 53-66(14)

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Abstract:

Analytical results of sound velocity and spectrum for seafloor sediment ore obtained by VWA (velocity-wave-amplitude) discrimination technique. Based on velocity-wave-amplitude, an understanding is gained of the physical condition and structural characteristics of seafloor sediment, which is combined with other geological information of the sedimentary layer to synthetically discriminate the properties of seafloor sediment. Experimental results show that, by using the relationship between sound velocity, wave form envelope, amplitude shape and size, and such parameters as sedimentary structure, microstructure, bedding, grain composition, mineral composition, and physical-mechanics, etc., the basic properties of the shallow surface seafloor sediment in the experimental sea area can be discriminated and the burial depth of traces of ancient marine transgression and regression events in the borehole cores of seafloor sediment can be divided, thus making an attempt of and contribution to the practice of acoustically remote-sensing and telemetering seafloor sediment.

Keywords: discrimination; paleooceanography; seafloor sediment; sediment properties; velocity-waveform-amplitude

Document Type: Research article

DOI: http://dx.doi.org/10.1080/10641190601177598

Affiliations: 1: CAS Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, P.R. China

Publication date: 2007-01-01

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