Application of acoustic profiling to study sedimentation processes in a tailings disposal dam

2007 ◽  
Author(s):  
Marco Ianniruberto* ◽  
Augusto César Bittencourt Pires ◽  
Carlos Tadeu Carvalho do Nascimento ◽  
Raminez Manoel Rodrigues do Carmo
Keyword(s):  
Tailings Disposal ◽  
Acoustic Profiling ◽  
Sedimentation Processes

Application of acoustic profiling to study sedimentation processes in a tailings disposal dam

2007 ◽  
Author(s):  
Marco Ianniruberto ◽  
Augusto César Bittencourt Pires ◽  
Carlos Tadeu Carvalho do Nascimento ◽  
Raminez Manoel Rodrigues do Carmo
Keyword(s):  
Tailings Disposal ◽  
Acoustic Profiling ◽  
Sedimentation Processes

scholarly journals The problem of genesis of quaternary deposits of the Barents Sea as a reflection of the overall crisis of glacial theory

2020 ◽  
pp. 80-102
Author(s):  
Rudol'f Borisovich Krapivner
Keyword(s):  
High Latitude ◽  
Barents Sea ◽  
Quaternary Sediments ◽  
The Barents Sea ◽  
Marine Sedimentation ◽  
Seismic Image ◽  
Degree Of Consolidation ◽  
River Valleys ◽  
Acoustic Profiling ◽  
Sedimentation Processes

This article continues the discussion on quaternary geology and paleogeography of the vast and well-studied shelf of the Barents Sea. The object this research is the relief and quaternary formations of the Barents shelf. The data of seismic-acoustic profiling and materials of engineering-geological drilling were used. Since the Barents shelf is a high-latitude area of Holocene sedimentation, the author analyzes various aspects of the quaternary sediments genesis, taking into account the geographic zoning of marine sedimentation processes and an increase in the gravitational consolidation of sediments down through the section. The genetic link between the microstructure and the degree of consolidation of clayey sediments with their seismic image was revealed, which was considered in interpretation of seismic profiling materials. Over the Barents shelf, the cover of weakly consolidated sediments of the last marine transgression is separated from the underlying morainelike or pre-quaternary sediments by a diachronous boundary of stratigraphic and sometimes angular unconformity. The transgression is not of glacioeustatic, but of tectonic nature. During the hiatus that preceded it, an erosional relief with river valleys and their tributaries was formed, the main features of which have been preserved in the northern deep-water part of the sea. The conclusion is argued that approbation of the glacial theory on the example of high-latitude Arctic shelf contradicts the facts and main provisions of glaciology, reflecting the overall crisis of this theory.

Effects of Pool Drawdown and Wing Dams (Pool 8), and Closure Damns (Pool 13), on Navigation Channel Sedimentation Processes, Upper Mississippi River

2006 ◽  
Author(s):  
David D. Abraham ◽  
Mark A. Cowan ◽  
Jon S. Hendrickson ◽  
William M. Katzenmeyer ◽  
Kevin J. Landwhr ◽  
...  
Keyword(s):  
Mississippi River ◽  
Upper Mississippi River ◽  
Navigation Channel ◽  
Sedimentation Processes

Isolasi Dan Karakterisasi Bentonit Alam Menjadi Nanopartikel Monmorillonit

2018 ◽  
Vol 3 (1) ◽  
pp. 12 ◽  
Author(s):  
Zaimahwati Zaimahwati ◽  
Yuniati Yuniati ◽  
Ramzi Jalal ◽  
Syahman Zhafiri ◽  
Yuli Yetri
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Particle Size ◽  
Surface Morphology ◽  
Average Diameter ◽  
Particle Size Analyzer ◽  
Ft Ir ◽  
Scanning Electron ◽  
Sedimentation Processes

<p>Pada penelitian ini telah dilakukan isolasi dan karakterisasi bentonit alam menjadi nanopartikel montmorillonit. Bentonit alam yang digunakan diambil dari desa Blangdalam, Kecamatan Nisam Kabupaten Aceh Utara.  Proses isolasi meliputi proses pelarutan dengan aquades, ultrasonic dan proses sedimentasi. Untuk mengetahui karakterisasi montmorillonit dilakukan uji FT-IR, X-RD dan uji morfologi permukaan dengan Scanning Electron Microscopy (SEM). Partikel size analyzer untuk menganalisis dan menentukan ukuran nanopartikel dari isolasi bentonit alam. Dari hasil penelitian didapat ukuran nanopartikel montmorillonit hasil isolasi dari bentonit alam diperoleh berdiameter rata-rata 82,15 nm.</p><p><em>In this research we have isolated and characterized natural bentonite into montmorillonite nanoparticles. Natural bentonite used was taken from Blangdalam village, Nisam sub-district, North Aceh district. The isolation process includes dissolving process with aquades, ultrasonic and sedimentation processes.  The characterization of montmorillonite, FT-IR, X-RD and surface morphology test by Scanning Electron Microscopy (SEM). Particle size analyzer to analyze and determine the size of nanoparticles from natural bentonite insulation. From the research results obtained the size of montmorillonite nanoparticles isolated from natural bentonite obtained an average diameter of 82.15 nm.</em></p>

Resonant acoustic profiling for biological detection and diagnostics

2008 ◽  
Author(s):  
W. Chiu ◽  
C.J. Hammond ◽  
R. Hammond ◽  
L. Harding ◽  
E. Hawkins ◽  
...  
Keyword(s):  
Biological Detection ◽  
Acoustic Profiling
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