“…Despite the fact that many of those sub-disciplines may adopt slightly different terminology or nomenclature, the porosity of their respective research boundaries, and the level of overlap that exists between adjacent subjects means that many practitioners in "physical geography" commonly draw on ideas, theories or techniques from neighbouring specialisms in order to more robustly test a specific hypothesis or answer a particular research question (Sparks, 1969). One subdiscipline that regularly draws on techniques from closely allied disciplines is geomorphology (e.g.…”