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A Geomorphometric Approach to Estimate the Deterioration of Earthen Archaeological Sites by Rainfall and Diffusion Processes: The Huaca Chornancap (Eighth–14th Century ad), Lambayeque, Peru.

Rain‐induced erosion processes can severely damage Earthen archaeological sites. Huaca Chornancap (HCH; eighth–14th century ad) is a platform located in the Lambayeque region (Peru) exposed to seasonal rain due to El Niño Southern Oscillation (ENSO). We present data from a UAV‐based photogrammetric...

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Published in:Archaeological Prospection Vol. 33; no. 3; pp. 607 - 621
Main Authors: Magnini, Luigi, Apa, Maria Ilaria Pannaccione, Cachay, Robert Gutiérrez, Manayalle, Marco Fernández, Torre, Carlos Eduardo Wester La, Ventura, Guido
Format: Article
Published: Wiley-Blackwell Jul2026
Online Access:View this record in EBSCOhost
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        10.1002/arp.70041
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        atl: A Geomorphometric Approach to Estimate the Deterioration of Earthen Archaeological Sites by Rainfall and Diffusion Processes: The Huaca Chornancap (Eighth–14th Century ad), Lambayeque, Peru.
      aug:
        au:
          Magnini, Luigi
          Apa, Maria Ilaria Pannaccione
          Cachay, Robert Gutiérrez
          Manayalle, Marco Fernández
          Torre, Carlos Eduardo Wester La
          Ventura, Guido
        affil:
          Dipartimento Di Studi Umanistici, Università Ca' Foscari Venezia, Venezia, Italy
          Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
          Museo Arqueológico Nacional Brüning, Lambayeque, Peru
          Museo de Sitio Huaca Chotuna‐Chornancap, Lambayeque, Peru
          Dirección Desconcentrada de Cultura de Lambayeque y Dirección Ejecutiva de la Unidad Ejecutora 005 Naylamp, Chiclayo, Peru
          Istituto di Scienze Marine, Consiglio Nazionale Delle Ricerche, Naples, Italy
      sug:
      keyword:
        deteroriation
        digital morphometry
        earthen archaeological site
        erosion
        geomorphology
      ab: Rain‐induced erosion processes can severely damage Earthen archaeological sites. Huaca Chornancap (HCH; eighth–14th century ad) is a platform located in the Lambayeque region (Peru) exposed to seasonal rain due to El Niño Southern Oscillation (ENSO). We present data from a UAV‐based photogrammetric survey and produce a Digital Surface Model from which we compute selected morphometric parameters. Rills and gullyes affect the HCH steep flanks, whereas pits concentrates on the flat top. Slides induced by rain also affect the western flank. Results from a model evidence the HCH sectors where diffusive erosion processes are predicted to act over the next century. We determine a vertical erosion rates of 0.33 m/century by ENSO‐related rain, 0.13 m/century by splash erosion and < 0.25 m/century by diffusion processes. Our findings emphasize the deteroriation of the HCH structural integrity. The methodological approach we propose may be applied to other earthen archaeological sites worldwide.
      pubtype: Academic Journal
      doctype: Article
      src: R
    language: English
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