Electrokinetic Transduction Of Acoustic Waves In Ocean Sediments
نویسندگان
چکیده
Our specific objectives are to develop models of ocean sediments that reveal the multi-scale aspects of sediment response. Frequency-dependent acoustic behavior is derived from macroscopic parameters, and these parameters in turn depend on microscopic features that characterize the material. In particular, this project details how electrokinetic phenomena—which have been used in seismology to characterize consolidated porous media—are directly coupled to wave motion. In support of this research, we have developed EK transduction techniques for studying unconsolidated sediments.
منابع مشابه
Determination of sediments diameter using acoustic waves
The use of acoustic waves in researches related to sea water is of most importance among scientists recently. Since these waves are the only waves, transmitted in water with lowest attenuation and high speed, they can be used in many scientific fields. The main goal of this research is to better understand the physics and mechanisms of sound-seabed interaction, including acoustic penetration, p...
متن کاملEvaluation of underwater acoustic propagation model (Ray theory) in a river using Fluvial Acoustic Tomography System
Underwater acoustics is widely used in many applications, such as oceanography, marine biology, hydrography, fishery, etc. Different models are introduced to simulate the underwater acoustic propagation in the oceans and the seas. In this study, the Ray Theory model is used to simulate the acoustic wave propagation in a shallow-freshwater river (Gono River) located in western part of Japan. The...
متن کاملElectrokinetic and Sediment Remediation in Microbial Fuel Cell (RESEARCH NOTE)
Recently developed man-made structures have caused environmental pollutions, and unfortunately, in spite of the deteriorating affairs and repeated warnings by scientists and experts, the degree of contamination is increasing considerably. One of the natural sources undergoing changes is the coasts. It is mainly due to human activities which have led to a change in the quality and quantity of se...
متن کاملConductivity Dependence of Seismoelectric Wave Phenomena in Fluid-Saturated Sediments
Seismoelectric phenomena in sediments arise from acoustic wave-induced fluid motion in the pore space, which perturbs the electrostatic equilibrium of the electric double layer on the grain surfaces. Experimental techniques and the apparatus built to study the conductivity dependence of the electrokinetic (EK) effect are described and outcomes for studies in loose glass microspheres and medium-...
متن کاملشناسایی جریان‌های زیردریایی توسط امواج صوتی
Acoustic wave propagates properly in water, whilst most forms of electromagnetic waves, particularly in salty and dense sea water, are attenuated after a few tens or hundreds of meters so that it will be impossible to trace and detect them. This paper presents a special method for recognizing probable underwater currents, and reconstruction of their intensities, widths, and directions by usin...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2015