Normalización de base de datos de remociones en masa en la Región de Aysén, Chile.

Abstract

Landslides (LS) are a type of geological hazard that frequently affect the population and connectivity in urban and rural areas. Decision-making in the face of this geological hazard involves the management of geographic data. This requires databases (DB) that are easy to use and/or actua-lize for the analysis of LS events. The National Geology and Mining Service of Chile uses databases that have been developed with different objectives and by various professionals; therefore, they do not have a standardized and normalized structure. This complicates the understanding and updating of the different fields defined by the creators, resulting in a new database being created at the request of each new user. To address this issue, this study proposes the normalization of a thematic LS database, drawing on elements from the ISO 19115-1:2014 standard and the application context in the Aysén region. Domain lists were defined for certain fields, and a Data Dictionary was compiled, resources that allow for a clear understanding and identification of the purpose, scope, and meaning of each field in the database. The proposed LS database was evaluated and validated through a usability test based on tasks applied to ten users with a specific profile (geologists, experienced in GIS, and database updating), yielding results regarding effectiveness and efficiency measures. The database can be used and/or updated without difficulty (effectiveness), using complementary resources (efficiency). Satisfaction was measured through adaptation and application of the SUS (System Usability Scale) questionnaire, and scores indicate a rating from good to excellent (>82)