The Gener ationa lM echanism of Orientating Sedimentary Structure by In terna l2 waves

WANG Qing-chun; BAO Zhi-dong; HE Ping

The discovery of the large sedimentary-waves in deep water, caused the generations and the developments of internal-waves both home and abroad. The study shows that internal-waves can shape the sediments on seafloor and form orientating sedimentary structure. This kind of structure includes single-direction, double-directions and multi-directions. Maybe the returning structure is the special character of internal-waves. LaFond s' theory about the gener- ation of this kind of structure is widely accepted. The theory indicates that the velocity of bottom currents formed by internal-waves is reverse ratio to the distance between the density interface and the seabed. Return ing transport is the main trends of internal-waves because the trough ofwave is close to the seafloor. The research conc ludes that in ternal-waves are similar homology of surface-waves and the genera tion of the orientating sedimentary structure formed by internal-wave can be exp lained clearly by the general fluctuation theory successfully. The generationmechanism of orientating sed imentary structure is very important to the recognition of the internal- waves sediments

1. University of Petroleum, Beijing 102249;

2. Research Institute of Petroleum Exploration, Huabei Oilfield, Renqiu Hebei 062552

Received Date: 2004-02-24

Rev Recd Date: 2004-07-10

Publish Date: 2005-06-10

Key words:

Abstract: The discovery of the large sedimentary-waves in deep water, caused the generations and the developments of internal-waves both home and abroad. The study shows that internal-waves can shape the sediments on seafloor and form orientating sedimentary structure. This kind of structure includes single-direction, double-directions and multi-directions. Maybe the returning structure is the special character of internal-waves. LaFond s' theory about the gener- ation of this kind of structure is widely accepted. The theory indicates that the velocity of bottom currents formed by internal-waves is reverse ratio to the distance between the density interface and the seabed. Return ing transport is the main trends of internal-waves because the trough ofwave is close to the seafloor. The research conc ludes that in ternal-waves are similar homology of surface-waves and the genera tion of the orientating sedimentary structure formed by internal-wave can be exp lained clearly by the general fluctuation theory successfully. The generationmechanism of orientating sed imentary structure is very important to the recognition of the internal- waves sediments

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The Gener ationa lM echanism of Orientating Sedimentary Structure by In terna l2 waves

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