The main objective of a Synthetic [simulated] Earth Gravity Model (SEGM) lies in its utility to validate and test existing and new methods in gravity field modelling (e.g. Featherstone, 1999; Kuhn and Featherstone, 2005; Baran et al., 2006; Tsoulis and Kuhn, 2007).
Ishikawa (2004) and Nomura et al. (2011) used the Location Quotient (LQ) method, which estimates the net transaction between two areas by the relative advantage measures.4 Yamada (2013) developed the Gravity-RAS method, in which a gravity model was used to obtain initial values of the RAS iterations.
In this study, we use the Hough transform algorithm based on the upward continuation method to detect lineaments in gravity anomaly maps in order to better understand the tectonic evolution of the southwestern part of the Thrace Basin.
Similar reports were conducted with the Durham gravity method in Xi An city (northwestern region of China) [ 17] in the 1980's and in Wuhan city (central region of China) in the 1990's [ 18].
In gravity model methods, both the proximity of a location to other economic centres and the economic size of these centres contribute to its peripherality.
Transaction values among sub-regions of each sector are estimated by the gravity-RAS method, in which the initial values are obtained by the gravity model.
Then the commodity flows among the areas for each sector are estimated by the Gravity-RAS method, in which the initial values for RAS iterative calculation are reduced from the estimated Gravity model.
In this paper, application of the Endurance Time (ET) method in seismic analysis of concrete gravity dams has been investigated.
The application of this method to zero gravity and nonzero gravity environments is also discussed.
Also, potential application of the ET method in non-linear analysis of concrete gravity dams has been investigated.
