DEFORMATION ANALYSIS OF GPS AUSCULTATION NETWORK BASED ON GENERALIZED REGRESSION NEURAL NETWORK (GRNN)
Journal Title: Larhyss Journal - Year 2014, Vol 19, Issue 19
Abstract
The present paper deals with the use of neural networks in the displacement and deformation fields modelling and analysis. The Generalized Regression Neural Network (GRNN) has proved its efficiency and reliability than the classical methods in the approximation of the displacement function. Based on the strain tensors, the deformation of GPS network is evaluated and represented according to a regular grid. In order to analyse this deformation, the concepts of deformability and deformation reliability are introduced, where the Monte Carlo method is employed to compute the significance degrees of the resulting tensors. At each stage of deformation field process, the GRNN neural network is used to perform an optimum interpolation of displacement field. The application concerns the GPS auscultation network of the Liquefied Natural Gas (LNG) underground tank of GL4/Z industrial complex (Arzew, Algeria). Composed of 119 points surrounding the LNG tank, the GPS network was observed between 2000 and 2006. The data concern the horizontal and vertical displacements of the network points according to local geodetic coordinates (E, N, U). The results show the performance of the adopted neural networks method in the generating and analysis of displacement and deformation fields. The most deformations measured are significant and at the deformability level. They support the physical interpretation by the presence of a rocky area at the WS side (landward) of the LNG tank which leads to compression and swelling, and the role of sea which acts as a warmer of freezing front causing important dilatations at the NE side (seaward).
Authors and Affiliations
GOURINE B. | Division de Géodésie Spatiale – Centre des Techniques Spatiales (CTS). P.O. Box 13, 31200, Arzew, Algeria
Keywords
Related Articles
- EP ID EP15096
- DOI -
- Views 409
- Downloads 13
COMPUTATION OF MASS OSCILLATIONS IN A SURGE TANK BY FINITE ELEMENT TECHNIQUE
The fluctuation of free surface water in surge tanks is of great interest for its design. For this, various mathematical models exist for the analysis of mass oscillations in a surge shaft following valve adjustment. T...
INCIDENCE DE PARAMETRES REACTIONNELS SUR L'OXYDATION DES SUBSTANCES HUMIQUES PAR LE CHLORE ET LE PERMANGANATE DE POTASSIUM
Les résultats obtenus au cours de cette étude mettent en évidence que les substances humiques présentent une réactivité importante aussi bien vis-à -vis du chlore que du permanganate de potassium. Les potentiels...
PHOTOVOLTAIC PUMPING SYSTEMS TECHNOLOGIES TRENDS
This paper has reviewed the principle research activity in photovoltaic pumping systems over the past decades. Prior to the common use of power converters, the principle problem was the to find the best matching of DC...
CHANGEMENTS CLIMATIQUES ET RESSOURCES EN EAU EN ALGERIE VULNERABILITE, IMPACT ET STRATEGIE D’ADAPTATION
The climate changes for a long time ceased being a scientific curiosity. They constitute the major environmental question which dominates our time and the major challenge to which must answer the environmental organiza...
CALCUL DE LA PROFONDEUR NORMALE DANS UNE CONDUITE OVOÃDALE PAR LA METHODE DU MODELE RUGUEUX
Normal depth plays a significant role in the design of open channels and in the analysis of the non-uniform flow as well. Currently, there is no analytical method for calculation of the normal depth in open channels, i...