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Copyright of Revista INVI is the property of Universidad de Chile and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Latin American Studies is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The paper explores the connection between computerised techniques of mapping and the role of maps in modern nationhood, interrogating the ways that maps are naturalised and deployed in postcolonial neoliberal statecraft. A case study of Ecuador demonstrates how the relationship between cartography and the nation-state is being both altered and reaffirmed by new mapping practices and institutional processes. Despite neoliberalising moves to decentre state cartographers and the technological advances supporting the proliferation of national maps and map-makers, Ecuadorian cartographies are still authorised by the nation-state, as explored in relation to spatial information about the country, and in relation to the processes of land-titling. Under neoliberal governance and with advanced mapping techniques, land-titling produces small territories that replicate – in miniature – the jigsaw-like and modular quality of national territories. As such, mappings of individual private properties produce the reality of neoliberal statecraft. [ABSTRACT FROM AUTHOR]

Lahars, here defined as debris flows of volcanic origin, are rapid mass movements that pose a serious threat to cities located in the vicinity of many volcanoes. Quito, capital city of Ecuador and placed at the foot of the Pichincha volcano complex, is exposed to serious inundation hazard as part of the city is built on numerous deposits of large lahars that have occurred in the last 10,000 years.The objective of this paper is to model the potential lahars of the Pichincha volcano to predict inundation areas within the city of Quito. For this purpose two models that apply different approaches were utilized and their results were compared.The programs used were LAHARZ, a semi-empirical model conceived by the United States Geological Survey (USGS), and FLO-2D, a hydraulic model distributed by FLO Software Inc. LAHARZ is designed as a rapid, objective and reproducible automated method for mapping areas of potential lahar inundation (Proc. First Int. Conf. on Debris Flow Hazards Mitigation, San Francisco, USA, ASCE, 1998, p. 176). FLO-2D is a two-dimensional flood routing model for simulating overland flow on complex surfaces such as floodplains, alluvial fans or urbanized areas (FLO-2D Users manual, version 99.2). Both models run within geographical information systems (GIS).Fieldwork was focused on collecting all available information involved in lahar modeling. A total of 49 channel cross-sections were measured along the two main streams and stratigraphic investigations were carried out on the fans to estimate the volume of previous events. A global positioning system was utilized to determine the coordinates of each cross-section. Further data collection concerned topography, rainfall characteristics and ashfall thicknesses. All fieldwork was carried out in cooperation with the Instituto Geofisico of the Escuela Politecnica Nacional.Modeling in a GIS environment greatly aided the exportation of results for the creation of thematic maps and facilitated model comparison. Evaluation of the models was performed by comparing simulation results against each other and against the geometry of existing lahar deposits. [Copyright &y& Elsevier]

The theme of migration is not new for Ecuadorians. In the visual arts and literature, artists have traditionally found the theme of migration to be useful when interpreting the personal and existential experiences of individuals living outside of Ecuador. Initially, the topic was not understood as a collective phenomenon capable of putting at risk an elusive national identity. Over time, however, the personal drama became a collective tragedy, which defines and conditions in no small measure the cultural, psychological and geographic boundaries of a pluri-national Ecuador struggling to re-signify the new cartographies that place and displace a nation in constant migratory movement, both internally and externally. This complex social, migratory and cartographic process of becoming is found in works of literature and the visual arts, which often oscillate between testimonial representations and representational testimonies. My analysis focuses on five works and highlights some of the identity transformations that Ecuador, a country located at the centre of the world, continues experiencing while seemingly adrift, yet fully engaged in re-inventing its multiple moving borders. [ABSTRACT FROM AUTHOR]

Scholars and practitioners are increasingly turning to maps as tools for promoting health and development communication. These maps are often criticized for privileging the interests of the global North and for authorizing (neo)colonial approaches. The authors offer a case of community mapping incorporating asset-based community development that offers an alternative cartography. Drawing on the maps produced by members of four communities in rural Ecuador, the authors articulate how their maps productively use and challenge assumptions about maps. Following this analysis, the authors offer some implications that community-scale maps have for articulating rhetorical alternatives in health and development communication. [ABSTRACT FROM AUTHOR]

Cotopaxi is an active volcano in Ecuador, whose eruptions are characterized by producing destructive primary lahars which represent a major risk for the country. The hazard assessment related to such lahars relies largely on the knowledge of the latest event, which occurred on 26 June 1877, for either scenario definition or simulation calibration. A detailed (1:5000 scale) cartography of the deposits belonging to that eruption has been obtained in the proximal northern drainage of Cotopaxi. The cartography was performed through a combination of geological fieldwork, as well as the analysis and interpretation of high-definition imagery obtained by drone surveys combined with the Structure from Motion technology for image processing. Such imagery included red and green visible bands, and a near-infrared band, which allowed the obtention of NDVI imagery where the primary lahar deposits were identified and cartographed with support of fieldwork data. Both data sources are mutually complementary, and the final cartography would be impossible if any of them were not available. The results obtained represent a significant advance for the level of detail with respect to previous cartographic works. Moreover, they should allow an improved calibration of the new generation of numerical models that simulate lahar flow for hazard assessment at Cotopaxi. [ABSTRACT FROM AUTHOR]