The free-air gravity in the Marmara Sea reveals that the low density of sedimentary basins is partly compensated in the lower crust. We compiled geophysical upper crust studies to determine the sediment basin geometries in and around the Marmara Sea and corrected the gravity signal from this upper crust geology with the Parker method. Then, assuming long wavelength anomalies in the residual gra...

In this work, we present a new gravimetric Moho model over the Gulf of Guinea computed from inversion global gravity EIGEN-6C4 model. The computation procedure contains regularized non-linear algorithm. Before applying algorithm, data have been corrected effects topography, bathymetry, and sediments. To calculate these corrections, forward modeling has applied using tesseroids to take into acco...

study crust and upper mantle structure below the surface of earth is one of the important objectives of geophysics. teleseismic body waveforms have been used to infer crust and upper mantel structure. the iranian plateau is part of the alpine-himalayan orogenic belt. the zagros mountain belt in southwestern iran has resulted from the collision of arabian plate with the continental crust of cent...

S U M M A R Y We present a neural network approach to invert surface wave data for a global model of crustal thickness with corresponding uncertainties. We model the a posteriori probability distribution of Moho depth as a mixture of Gaussians and let the various parameters of the mixture model be given by the outputs of a conventional neural network. We show how such a network can be trained o...

Joint inversions are now commonly used in the earth sciences. They have been developed to better understand the structure of the earth, since they provide more constraints on the inverted parameters. We propose a new process to simultaneously invert several data sets in order to better image 3D crustal and upper mantle structures. Our inversion uses three kinds of data that present good complem...

earthquakes travel times inversion for determination of velocity structure of crust is one of the most important objectives in seismology. in the simultaneous inversion method, the parameters of earthquakes and velocity model are determined initially and are improved during inversion steps. in this study, we have used more than 22000 calculated travel times for first arrivals of 6000 earthquake...

We develop an algorithm for a Moho depth recovery from gravity and gradiometry data apply this method to estimate the beneath Tibetan Plateau. The basic idea of is describe mathematically undulations in terms condensation layer with respect mean depth, instead applying more commonly used isostatic compensation schemes. Expressions that functionally relate field quantities (Moho) are derived spe...