Abstract
AbstractSeasonal wetlands and exuberant crop growth present challenges to systematic archaeological survey in alluvial settings, particularly in the tropical lowlands. Lidar can reduce the time and cost required to survey such areas by allowing targeting of elevated features not buried under recent alluvium, but demographic interpretation requires estimating post-abandonment alluvial depths. The broad alluvial plain between the Papaloapan delta and the Tuxtla Mountains in southern Veracruz, Mexico, offers a valuable case study, featuring seasonally inundated marshes, lakes, and vast fields of sugar cane, a crop infamously obstructive to lidar mapping. Undertaken to reconstruct demographic and organizational change in the Tres Zapotes polity, this study evaluates the benefits and limitations of lidar for archaeological survey in tropical alluvial settings based on overlap between lidar and systematic pedestrian survey and estimates of alluvial depth obtained by auger testing and underscores the importance of timing for lidar mapping in sugar cane.
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