In seismic exploration, regularized migration inversion of seismic data usually requires solving a weighted least-squares problem with constrains. It is well known that directly solving this problem using some decomposition techniques is very time-consuming, which makes it less possible for practical use. For iterative methods, previous research is mainly on solving the inverse model in a full ...

In the field of coalfield geological research, era traditional research has basically ended. At present, it is in period earth system scientific research. Starting from main factors affecting high-resolution seismic exploration and combining with some examples coal exploration,.this paper analyzes discusses middle methods exploration, mainly several key links data acquisition process, makes a b...

Abstract: Elastic or acoustic wave-field modeling is an important part of seismic exploration. It can be used during the planning, processing and interpretation stages of seismic investigation. First attempts of using wave-field modeling were undertaken in the seventies by Alford, Kelly and others [1, 2]. These attempts were restricted by the limitations of computers at that time. Even now, com...

many steps of seismic data processing sequence suppose that data sets are sampled in time and spatial dimensions uniformly. today, this assumption is true but only in time dimension. modern seismic exploration equipment permits seismic data sets to be sampled uniformly and densely in time dimension. however, along spatial dimension uniform and dense sampling are not possible because of operatin...

In this paper we describe concepts, which support the interactive exploration of subsurface information extracted from seismic datasets. Since in general subsurface information is of volumetric nature, appropriate visualization techniques are needed to provide an insight view to special regions of interest. Usually clipping planes or surface extraction techniques are used for this purpose. We w...

A large quantity of data in earthquake, well-log, grilling, geology and other non-seismic geophysics, has been accumulated during long period of petroleum prospecting. These data are stored in papery document and managed in low efficient manual management. This paper proposed this petroleum exploration information management system which adopts SQL Server2000 as database server and combines B/S...

A geophysical seismic survey was conducted in the summer of 2001 off the northeastern coast of Sakhalin Island, Russia. The area of seismic exploration was immediately adjacent to the Piltun feeding grounds of the endangered western gray whale (Eschrichtius robustus). This study investigates relative abundance, behavior, and movement patterns of gray whales in relation to occurrence and proximi...