- Created by: BenEllinor
- Created on: 29-04-17 12:02
1.1 How can costal landscaoes be viewed as systems?
Key idea - Coastal landscapes can be viewed as systems
- The development of a costal landscape over time can be viewed within a systems framework.
- A system is a set of interrelated objects comprising components (stores) and processes (links) that are connected together to form a working unit or unified whole.
- Coastal landscape systems store and transfer energy and material on time scales that can vary from a few days to milennia.
- The energy available to a coastal landscape system may be kinetic, potential or thermal. It is this energy that enables work to be carried out by the natural, geomorphic processes that shape the landscape.
- The material found in a coastal landscape system is predominantly the sediment found on beaches, in estuaries and in the relatively shallow waters of the nearshore zone.
The components of open systems
- Coastal landscape systems are recognised as being open systems (Figue 1.1, pg 2).
- This means that energy and matter can be transferred from neighouring systems as an input.
- It can also be transferred to neighbouring systems as an output.
- A good example of this is the input of fluvial sediment from a river, as it deposits its load at the mouth when available energy decreases.
In system terms: a coastal landscape has:
- Inputs - including kinetic energy from wind and waves, thermal energy from the…