A Least Cost Analysis: Correlative Modeling of the Chaco Regional Road System

During the ninth through twelfth centuries A.D., Ancestral Pueblo people constructed long, straight roads that interconnected the Chaco regional system across the San Juan Basin of northwestern New Mexico. The intent and use of these features has eluded archaeological consensus, although recent rese...

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Main Authors: Sean Field, Carrie Heitman, Heather Richards-Rissetto
Format: Article
Language:English
Published: Ubiquity Press 2019-09-01
Series:Journal of Computer Applications in Archaeology
Subjects:
Online Access:https://journal.caa-international.org/articles/36
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author Sean Field
Carrie Heitman
Heather Richards-Rissetto
author_facet Sean Field
Carrie Heitman
Heather Richards-Rissetto
author_sort Sean Field
collection DOAJ
description During the ninth through twelfth centuries A.D., Ancestral Pueblo people constructed long, straight roads that interconnected the Chaco regional system across the San Juan Basin of northwestern New Mexico. The intent and use of these features has eluded archaeological consensus, although recent research has reiterated the occurrence of long distance timber importation to Chaco Canyon. To enhance our interpretation of these features we offer a large-scale least cost analysis wherein optimal pathways that are modeled to simulate timber importation are compared to the actual road locations. A series of least cost paths were produced through different energy allocation algorithms, at different spatial scales, and with various origin and destination inputs. Our results reveal a strong correlation between actual road locations and modeled pathways. Therefore, we suggest that certain Chaco roads may have been specifically designed to facilitate the importation of timbers and that roads, once constructed, were the optimal pathway for the import of these resources.
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spelling doaj.art-29d39ff4834643e9b0aa76e9873946a82022-12-21T19:11:26ZengUbiquity PressJournal of Computer Applications in Archaeology2514-83622019-09-012110.5334/jcaa.3623A Least Cost Analysis: Correlative Modeling of the Chaco Regional Road SystemSean Field0Carrie Heitman1Heather Richards-Rissetto2University of Notre DameUniversity of Nebraska-LincolnUniversity of Nebraska-LincolnDuring the ninth through twelfth centuries A.D., Ancestral Pueblo people constructed long, straight roads that interconnected the Chaco regional system across the San Juan Basin of northwestern New Mexico. The intent and use of these features has eluded archaeological consensus, although recent research has reiterated the occurrence of long distance timber importation to Chaco Canyon. To enhance our interpretation of these features we offer a large-scale least cost analysis wherein optimal pathways that are modeled to simulate timber importation are compared to the actual road locations. A series of least cost paths were produced through different energy allocation algorithms, at different spatial scales, and with various origin and destination inputs. Our results reveal a strong correlation between actual road locations and modeled pathways. Therefore, we suggest that certain Chaco roads may have been specifically designed to facilitate the importation of timbers and that roads, once constructed, were the optimal pathway for the import of these resources.https://journal.caa-international.org/articles/36Least cost analysisChacoRoadsGIScost distanceAncestral Pueblo
spellingShingle Sean Field
Carrie Heitman
Heather Richards-Rissetto
A Least Cost Analysis: Correlative Modeling of the Chaco Regional Road System
Journal of Computer Applications in Archaeology
Least cost analysis
Chaco
Roads
GIS
cost distance
Ancestral Pueblo
title A Least Cost Analysis: Correlative Modeling of the Chaco Regional Road System
title_full A Least Cost Analysis: Correlative Modeling of the Chaco Regional Road System
title_fullStr A Least Cost Analysis: Correlative Modeling of the Chaco Regional Road System
title_full_unstemmed A Least Cost Analysis: Correlative Modeling of the Chaco Regional Road System
title_short A Least Cost Analysis: Correlative Modeling of the Chaco Regional Road System
title_sort least cost analysis correlative modeling of the chaco regional road system
topic Least cost analysis
Chaco
Roads
GIS
cost distance
Ancestral Pueblo
url https://journal.caa-international.org/articles/36
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