Money migrants send back to family and friends in their hone countries which form an important part in economies of poorer countries.
Cyclic Movements
Movement that has a closed route that is repeated annually or seasonally.
Activity Space
The space in which daily activities occur.
Nomadism
Movement among a definite set of places.
Periodic Movements
Movement that involves temporary or recurrent relocation.
Migrant Labor
a common type of periodic movement in which workers cross borders in search of jobs.
Transhumance
A seasonal periodic movement of pastolists and their livestock between highlands and lowlands.
Military Service
A common form of periodic movement involving as many as ten million U.S. citizens per year, who are moved to new locations where they will spend tours of duty.
Migration
A change in residence, intended to be permanent.
International Migration
Human movement across international boundaries.
Internal Migration
Human movement within a country.
Forced Migration
Human migration flows in which the movers have no choice but to relocate.
Voluntary Migration
Movement in which people relocate in response to perceived opportunity, not because they are forced to.
Laws of Migration
Five laws that predict the flow of migration.
Gravity Model
A mathematical prediction of interaction of places.
Push Factors
Negative conditions and perceptions that induce people to leave their abode and migrate to a new locale.
Pull Factors
Positive conditions and perceptions that attract people to new locales.
Density Decay
The effects of a distance on interaction, generally the greater the distance the less interaction.
Step Migration
Migration to a distant destination that occurs in stages.
Intervening Opportunity
The presence of a nearer opportunity that greatly diminishes the attractiveness for things far away.
Kinship Links
Types of push or pull factors that influences a migrant's decision to go where family and friends have already found success.
Chain Migration
Pattern of migration that develops when migrants move along and through kinship links.
Immigration waves
Phenomenon whereby different patterns of chain migration build upon one another to create a swell in migration from one origin to the same destination.
Explorers
A person examining an area that is unknown to them.
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