Vertical dominant migration channel and hydrocarbon migration in complex fault zone, Bohai Bay sag, China

Elderly Migration and Its Correlates in Iran

Objectives: When it comes to migration, the migration of young people comes to mind and the migration of the older adults is ignored. While, migration after retirement is an important and increasing phenomenon. The reasons and destinations of migration of the older persons are different from those of the young. Young people usually migrate to urban destinations and further distances with more ...

fourier migration for vertical velocity variations

the stolt (f-k) migration algorithm is a direct (i.e. non-recursive) fourier-domain technique based on a change of variables (or equivalently, a mapping) that converts the input spectrum to the output spectrum. the algorithm is simple and efficient but limited to constant velocity. a v(z)(f-k) migration method, capable of very high accuracy for vertical variations of velocity, can be formulated...

Diel vertical migration

In this Quick Guide, Brierley provides a brief overview of a pervasive aspect of aquatic ecosystems, the daily movement of organisms up and down the water column.

An investigation of subfacies and representative microfacies of the Cretaceous Chishan Group in the Wubao fault zone of Gaoyou sag, Subei basin, China

This study aims to identify favorable oil–gas reservoir facies in the Chishan group of the Wubao fault zone (Gaoyou sag, Subei basin, China) using the methods of outcrops and cores observation, granularity analysis, scanning electron microscope, log data, etc. The results suggest that the Chishan group in the studied area mainly develops desert sedimentary system, and contains five kinds of fac...

Under-employment and rural migration in iran