time-space geography

An approach to geography developed at the University of Lund by Torsten Hägerstrand and his associates (T. Carlstein 1978 vol. 2).

Time and space provide the room needed for sequences of events and Hägerstrand expressed this as a web model. This is based on four propositions: that space and time are scarce resources which individuals draw on to achieve their aims; that achieving an aim is subject to capability constraints, coupling constraints, and authority constraints; that these constraints interact to demarcate a series of probability boundaries; and that choices are made within these boundaries. A time-space prism is a representation of the constraints limiting the time within which the individual can act.

Time geography provides a method of mapping spatial movements through time.