Expanding omnidirectional geospatial modeling for archaeology: A case study of dispersal in a "New England" colonial frontier (ca. 1600–1750).

Geospatial landscape connectivity modeling techniques are widely used in archaeological studies of past human movement patterns and landscape interactions. Recent advancements in the development of omnidirectional modeling approaches present new avenues for research design and require introduction into the field. In this paper, we present a novel adaptation of a point-based omnidirectional model design that we use to advance understandings of early colonial expansion (ca. 1600–1750 CE) into a social and ecological frontier landscape in the Northeastern United States, the Great Bay Estuary. We build case-specific resistance surfaces and use Circuitscape modeling to simulate the outward dispersal of settler colonists from the landscape's central water bodies while accounting for the influences of both water-based and overland travel, as well as the availability of specific natural resources. The outcome of the simulation performs well when tested statistically against the archaeological record and the value of multivariate model parameterization is highlighted both quantitatively and qualitatively. This case study offers a framework others could use to advance their own contextually-informed modeling of past human dispersal and landscape interactions. • Omnidirectional geospatial modeling methods are needed in archaeology. • We present a point-based circuitscape model of colonial dispersal in New England. • Input resistance surfaces consider navigable waters, overland travel, and wetlands. • Model performance is tested against the archaeological record with success. [ABSTRACT FROM AUTHOR]