ABSTRACT
The stage upon which the processes play is largely predetermined by topography and the pattern of drainage, the underlying geology and soils, the vegetation cover, and the external climatic forces (Fig. 1.2). These predetermining conditions are reviewed in this section. But fundamental to an understanding of geomorphological activity in the Los Angeles region is the fact that some of the predetermining conditions and the geomorphological processes themselves are not constant: they evolve as a result of changes in, for instance, the location, frequency, magnitude and duration of storms, tectonic activity and fire, the transformation of surface characteristics by the processes of urbanisation, and hazard management (Fig. 1.2). These changes are Predetermining conditions and dynamics of changes relating to geomorphological hazards in Los Angeles County https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003168645/7476f66d-c70d-415d-9213-8053dc2b4539/content/fig1_2.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> 4considered in the following section. To avoid splitting an important theme between the two sections, climate is considered as a whole in the next section.
