Seismic Wave Slowness-Vector Estimation From Broad-Band Array Data

Eikonal tomography: surface wave tomography by phase front tracking across a regional broad-band seismic array

We present a new method of surface wave tomography based on applying the Eikonal equation to observed phase travel time surfaces computed from seismic ambient noise. The source-receiver reciprocity in the ambient noise method implies that each station can be considered to be an effective source and the phase travel time between that source and all other stations is used to track the phase front...

Application of Artificial Neural Networks and Support Vector Machines for carbonate pores size estimation from 3D seismic data

This paper proposes a method for the prediction of pore size values in hydrocarbon reservoirs using 3D seismic data. To this end, an actual carbonate oil field in the south-western part ofIranwas selected. Taking real geological conditions into account, different models of reservoir were constructed for a range of viable pore size values.  Seismic surveying was performed next on these models. F...

Slowness Surface Wave Surface

Broad-line and Multi-wave Band Emission from Blazars

We study the correlations of the flux of the broad-line emission (FBLR) with the X-ray emission flux, optical emission flux at 5500 Å and radio emission flux at 5 GHz, respectively, for a large sample of 50 Blazars (39 flat-spectrum radio quasars (FSRQs) and 11 BL Lac objects). Our main results are as follows. There are very strong correlations between FBLR and FX and between LBLR and LX in bot...

CMB Broad-Band Power Spectrum Estimation

The natural outcome of theoretical calculations of microwave background anisotropy is the angular power spectrum Cl as a function of multipole number l. Experimental Cl’s are needed for direct comparison. Estimation procedures using statistics linear in the pixel amplitudes as well as the conventional but less useful quadratic combinations are described. For most current experiments, a single b...