Factors affecting the use of applied geomorphology maps to communicate with different end-users

Abstract

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Geomorphological maps have found widespread application in the hydrocarbons industry, civil engineering, environmental consultancy, and planning. However, a geomorphological map created by academic geomorphologists for applied purposes can be a complex document that requires interpretation and simplification if it is to meet the requirements of the end-user. End-user requirements are variable in scale and detail, being a function primarily of the type of project under consideration. Hence, a large scale geomorphological map for an engineering construction project might contain an inappropriate level of detail for alternative applications such as regional planning or establishing the alignment of an oil pipeline. A methodology for the preparation of geomorphological maps, therefore, has to be sufficiently flexible to meet differing client needs and, whilst each map might be considered ‘bespoke’, general guidelines do need to be established. Aspects of these issues are explored through the process of preparing a geomorphological map for landslide hazard assessment on the coast of Dorset in England. The original field mapping scale was 1:1,000 and a suite of maps showing morphology, geomorphology and landslide hazard is presented at this scale. The paper discusses symbol choice and differentiation for monochrome output and compares the use of colour symbols and fills, giving the geomorphologist the option of presenting the mapping results in greater detail and the cartographer more design choices.