Horacio García

Horacio García
University of Santiago de Compostela | USC · Departamento de Xeografía

Ph.D in Geography

About

98
Publications
53,753
Reads
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356
Citations
Additional affiliations
January 2017 - February 2017
University of Santiago de Compostela
Position
  • Lecturer
April 2015 - January 2016
University of Santiago de Compostela
Position
  • Researcher
March 2015 - August 2015
University of Concepción
Position
  • Researcher and Lecturer

Publications

Publications (98)
Book
Full-text available
¿Sabemos qué es un río? Con esta obra pretendemos dar a conocer dos necesidades vitales para nuestros ríos, conservación y restauración, abordadas desde la geomorfología fluvial, ciencia que estudia los procesos de erosión, transporte y sedimentación de un río. Se trata de un libro de interés general porque, conviene recordar, todos vivimos en una...
Article
Full-text available
A methodology for dam removal monitoring and the results of two case studies is presented: Mendaraz dam (Urumea River) and Inturia dam (Leitzaran River), both located in Gipuzkoa. This monitoring is conducted by river survey cross-sections, measurements of processes and granulometrical analysis. Fast sediment erosion and sedimentation together with...
Conference Paper
Full-text available
ABSTRACT Fluvial geomorphology can be used as a diagnostic tool to assess the state of a river system and also for the spatial and temporal monitoring of channel restoration or rehabilitation actions. For these objectives a wide range of geomorphological control variables, processes, forms, attributes, indexes and ratios can be used. Within all of...
Article
This paper describes a new method to distinguish river terrace levels based on clast hardness and degree of weathering measured with an Equotip hardness tester. The technique was applied to a series of terraces on the Miño River in the northwestern Iberian Peninsula, where the lack of suitable material, high degree of weathering, and intense iron c...
Article
Full-text available
An updated version of the IHG index is presented. The index is based on three appraisal parameters: 1) the functional quality of the fluvial system, including a) flow regime naturalness, b) sediment supply and mobility, and c) floodplain functionality; 2) the channel quality, including a) channel morphology and planform naturalness, b) riverbed con...
Article
Full-text available
The management of a UNESCO Global Geopark (UGGp) requires a vast wealth of miscellaneous scientific knowledge that can be successfully organised using a Geographical Information System (GIS). This paper presents a pragmatic GIS database to assist in the suitable governance of the Courel Mountains UGGp (2017) in Northwest Spain. The database is stru...
Article
Full-text available
Resumen Las clasificaciones de ríos son un procedimiento técnico de utilidad para simplificar la realidad y discriminar tipos con características homogéneas. El ensayo experimental que se presenta en este trabajo, desarrollado sobre la red fluvial de Galicia, tiene el objetivo de combinar sistemas de infor-mación geográfica y tres variables topo-ge...
Article
Full-text available
The hydromorphological diagnosis and assessment of rivers is a necessary procedure aimed to improve the ecological status of rivers af- fected by notable human impacts. The hydrogeomorphological index IHG was designed 15 years ago for that purpose. Its most updated version and its modality for ephemeral courses (IHG-E) are presented. All applicatio...
Article
In his comment on our recent article “Promoting fluvial geomorphology to ‘live with rivers’ in the Anthropocene Era” (García et al., 2021), Dave Rosgen (2021) suggests that we make three erroneous claims about him and his technical protocol Natural Channel Design (NCD). In this reply, we contextualize and address his comments, analysing the repeate...
Article
Full-text available
The floods of 2015 and 2018 in the Middle Ebro River have led to a rethinking and updating of the forecasting and management systems. The improvements in the flow measurement systems applied in this type of extreme phenomena have led to questioning the values that were recorded in the past, officially changing the maximum flow rates of some histori...
Conference Paper
Full-text available
Ephemeral rivers hydromorphological processes are intermittent and many times of fast response. Therefore they remain still quite unknown. The geomorphological mapping of river forms and geomorphological units is a useful tool to recognize the evolution, changes and the response of river adjustments of hydrological events. A diachronic geomorpholo...
Conference Paper
Full-text available
Bedload sediment transport was monitored from 2016 to 2020 in the Leitzaran River, in a reach affected by the removal of 7-meters high dam (Oioki dam). The removal was accomplished in two phases, the 3 first meters were removed in September 2018 and the second phase (September 2019) involved the removal of the remaining 4 meters. The study area was...
Article
Is geomorphology at the forefront of river management? The aims of this article are to explore potential answers to this question in terms of role, barriers, motivation and prospects for river management in the Anthropocene Era. We justify and execute our analysis, first through the growing interest in applied geomorphology and its role to improve...
Chapter
Full-text available
Los trabajos de hidromorfología fluvial en España se han desarrollado en el presente siglo y han sido abordados en su mayor parte desde la Geografía Física. Esta ciencia aporta una visión integradora de todos los factores, elementos y procesos en la dinámica fluvial, resultando muy útil en el diagnóstico del estado de los ríos y en la propuesta de...
Article
Full-text available
This paper aims to identify potential areas of landslides in the Amzaz watershed in northern Morocco with its precarious environmental balance using the Information Value (IV) Model. Van Westen (1994) defines bivariate methods as a modified form of the quantitative map combination with the exception that weightings are assigned based upon the stati...
Preprint
Full-text available
The floods of 2015 and 2018 in the Middle Ebro River have led to a rethinking and updating of the forecasting and management systems. The improvements in the flow measurement systems applied in this type of extreme phenomena have led to questioning the values that were recorded in the past, officially changing the maximum flow rates of some histori...
Article
How should the success of river and floodplain restoration be assessed? What should we be restoring? We contend that the benchmark for restoration should be the river in its “natural,” that is, quasi‐equilibrium condition prior to deliberate modification. The pre‐modification condition of the river represents a quasi‐equilibrium state in which the...
Article
Full-text available
CONECTIVIDADE SEDIMENTOLÓXICA NA CUNCA DO RÍO OURO (GALICIA, NO PENÍNSULA IBÉRICA). IMPLICACIÓNS NO PLANEAMENTO TERRITORIAL
Article
National historical map resources are assessed in four European countries to characterize river corridor features and associated channel changes, as well as identify issues limiting or promoting geomorphic assessment procedures at a continental scale. A geomorphic audit that launches potential data for diagnosis from reach to continental scales cou...
Conference Paper
Full-text available
El presente estudio analiza la dinámica evolutiva del principal canal de aludes del Monte Mostallar (1.935 m, Serra de Ancares, NW de la Península Ibérica) tras el alud del año 2010 (clasificado como extraordinario en las montañas del Macizo Galaico por su baja recurrencia). Para ello hemos monitorizado la evolución del canal para el período 1957-2...
Conference Paper
Full-text available
Los cursos de agua efímeros del ámbito mediterráneo plantean muchas dificultades para que puedan ser objeto de programas de restauración. Los problemas derivan de la gravedad de los impactos geomorfológicos que sufren, de su funcionamiento repentino y esporádico-de ocurrencia a veces impredecible-, de su escasísima consideración en el marco de la g...
Conference Paper
Full-text available
Se estudia el transporte de carga de fondo (caudal sólido) mediante el seguimiento en un tramo del río Leitzaran afectado por la presa de Oioki. Se rastrearon 600 partículas de sedimentos utilizando técnicas RFID (radio-frequency identification) en 3 puntos diferentes: tramo control (fuera de los efectos de la presa), tramo aguas arriba y tramo agu...
Poster
Full-text available
A set of dimensionless morphological ratios are commonly used as a basis for studies of stream stability and natural channel restoration. Often, such ratios have been obtained from morphometric measurements made in the field and developed into a template for a given geomorphic reference site. The main objective of the present study is to analyze th...
Poster
Full-text available
A set of dimensionless morphological ratios are commonly used as a basis for studies of stream stability and natural channel restoration. Often, such ratios have been obtained from morphometric measurements made in the field and developed into a template for a given geomorphic reference site. In this study, high resolution aerial photographs from 2...
Poster
Lithological and aridity conditions in the central area of the Ebro Basin favour the abundance of intermittent and ephemeral rivers. These rivers suffer important environmental problems but lack specific scientific studies, and in most cases they are not even considered water bodies in their management. A methodological proposal is launched combini...
Article
Full-text available
This study documents the impacts of engineering works on flood risk and channel dynamics of the maximum geomorphic flow reach of the Middle Ebro River (Spain) over the last ninety years. The map reveals how the construction of transversal transport lines and their ineffective design and maintenance has contributed to an elevated risk of flooding an...
Article
Historical air photographs, LiDAR, and an unmanned aerial vehicle (UAV) were used to record the movement, from 1956 to 2018, of a clay and clast earthflow in a coastal valley in northwestern Spain. Two procedures were employed. The first tracked changes, in a GIS environment, in the location of eight, easily identified objects on the surface of the...
Article
Recently, a project has been set in motion to declare the Cape Ortegal complex (NW Iberian Peninsula), a geological reference in Spain and Europe, as a geopark. This initial phase has the purpose of reflecting and discussing the benefits of creating a geopark as a tool to foment education in geodiversity, geotourism, and scientific debate. We defin...
Chapter
Full-text available
STUDY OF GEOMORPHOLOGICAL CHANGES (2010-­‐2016) BY HIGH QUALITY DEMS, OBTAINED FROM UAVS-­‐ AND STRUCTURE FROM MOTION TECHNIQUES IN A CAPELADA´S CLIFFS (GALICIA, SPAIN): This study analyses the geomorphological evolution of a highly dynamic coastal environment between 2010-­‐2016 period (A Capelada, Galicia). The main challenge was obtaining high q...
Chapter
STUDY OF GEOMORPHOLOGICAL CHANGES (2010-­‐2016) BY HIGH QUALITY DEMS, OBTAINED FROM UAVS-­‐ AND STRUCTURE FROM MOTION TECHNIQUES IN A CAPELADA´S CLIFFS (GALICIA, SPAIN): This study analysesthe geomorphological evolution of a highly dynamic coastal environment between 2010-­‐2016 period (A Capelada, Galicia). The main challenge was obtaining high qu...
Poster
Full-text available
STUDY OF GEOMORPHOLOGICAL CHANGES (2010-­‐2018) BY HIGH QUALITY DEMS, OBTAINED FROM UAVS-­‐AND STRUCTURE FROM MOTION TECHNIQUES IN A CAPELADA´S CLIFFS (GALICIA, SPAIN): This study analyses the geomorphological evolution of a highly dynamic coastal environment between 2010-­‐2018 period (A Capelada, Galicia). The main challenge was obtaining high qu...
Poster
Full-text available
Complete 3D models of five alluvial reaches affected by the removal of Inturia dam (Leitzaran River) have been obtained through laser scanner techniques. Removal was accomplished in four phases, 3 m per year, and completed in January 2016. Data registration started before the removal started in 2013 and every year after. Therefore erosion and sedim...
Chapter
Full-text available
The frequency distribution of daily river discharge amounts almost conforms to a negative exponential distribution, reflecting the fact that there are small daily totals and few large ones. Positive exponential curves, which plot the cumulative percentages of days with discharges against the cumulative percentage of the discharge amounts that they...
Poster
The use of topographic instruments for massive data capture, like laser scanner, automatic photogrammetry or drones, is very frequent in the geometric documentation of different realities like heritage, industry or geomorphology. However, the apparent simplicity in the handling of such devices and the high speed of the measurement hides the true wo...
Article
River dynamics, global change and human pressure in Ebro basin, channel and delta. The river Ebro and its tributaries has undergone very remarkable changes since 1950. They have suffered marked process of simplification and stabilization, both in the main river and in its main Pyrenean and Iberian tributaries. They show important changes in the cha...
Article
Full-text available
The ecological condition and functionality of the Ebro basin’s rivers have suffered a notable deterioration in the last decades, because of the global change and anthropic pressures. Opposite to this problem, the initiatives of restoration are still scanty, local and very dispersed in the territory. Ebro basin does not stand out at present for rive...
Article
River classification is one of the recommendations of the European Water Framework Directive 2000/60/EC, which establishes that classifications should be carried out according to different variables hierarchically organized from a smaller to a larger scale. We suggest incorporating into the Directive’s hierarchical system a geoecological unit (lith...
Article
Full-text available
Las características tectónicas del margen continental chileno y su intensa y constante actividad sísmica, explican un nutrido historial de eventos catastróficos como sismos y tsunamis. La catástrofe más reciente es la acontecida el pasado 27 febrero de 2010, terremoto y posterior tsunami. Sin embargo, a pesar de este extenso historial no existe en...
Article
Full-text available
River restoration in Ebro basin, a synthesis. The ecological condition and functionality of the Ebro basin’s rivers have suffered a notable deterioration in the last decades, because of the global change and anthropic pressures. Opposite to this problem, the initiatives of restoration are still scanty, local and very dispersed in the territory. Ebr...
Conference Paper
Full-text available
Chile is shaped by an extensive network of coastal and Andean river basins that flow into the Pacific Ocean, thus configuring a unique geographic pattern. The fluvial system of the Andalién River is located in Concepción, one of the most developed cities in Chile, and it is a highly representative case study of what is happening now with the countr...
Article
Full-text available
The classification of rivers based on geomorphological criteria played, in the past, a secondary role for management decision making, although in the last years they have experienced a shift from the scientific field to that of the technical. Currently, managers require the most simplified form of classifications in order to use them in plans and p...
Article
Full-text available
Resumen Se trata de la fase inicial de un proyecto que busca la puesta en valor de los ríos en gravas, muy amenazados y en claro proceso de desaparición, siendo al mismo tiempo de alto valor patrimonial. Se presenta el censo y la propuesta preliminar de tipologías de los ríos de gravas en el Pirineo central aragonés. A partir de fotointerpretación...
Article
Full-text available
Resumen Se ha estudiado la dinámica de un sector de los acantilados de A Capelada (Galicia, NO Península Ibérica), lugar de gran interés por su constitución geológica, geomorfológica y de paisaje. El rasgo más singular de la fachada costera de A Capelada es la presencia de acantilados que llegan a alcanzar los 612 m de altura, cortados perpendicul...
Conference Paper
Full-text available
The methodology and results of two dam removals in two different rivers is presented and compared. One removed all-at-once and the second one in a four-stage removal process. Methodology included topographical measurements of the channel, TLS measurements of river bed and bars and sediment grain size and transport. Morphological channel adjustments...
Conference Paper
Full-text available
This study analyses the geomorphological evolution of a highly dynamic coastal environment, one of the higher cliffs in Continental Europe (A Capelada, NW Spain), using Structure from Motion-Multi View Stereoscan techniques (hereafter referred to as SfM-MVS). Comparing orthoimages from the last 10 years we observed several topographical changes in...
Article
Full-text available
Se presenta un análisis histórico-evolutivo de la geomorfología dinámica en ambientes fluviales. El objetivo del estudio se centra en organizar los hechos temporales pasados que han ido confeccionando el cuerpo de lo que actualmente es esta ciencia. La línea del tiempo establecida se estructura en diferentes etapas, cada una de las cuales se define...
Conference Paper
Full-text available
The application of hydrogeomorphology as a tool for river management and decision making on reference condition definition for river restoration is presented. Water Framework Directive (2000/60/CE) requires the identification of reference conditions and attainable target images, to achieve the good ecological status, taking into account the direct...
Poster
Full-text available
This study analyses the geomorphological evolution of a highly dynamic coastal environment, one of the higher cliffs in Continental Europe (A Capelada, NW Spain), using Structure from Motion-Multi View Stereoscan techniques (hereafter referred to as SfM-MVS). Comparing orthoimages from the last 10 years we observed several topographical changes in...
Article
Full-text available
This paper analyzes the history and development of fluvial geomorphology in dynamic environments. The goal of this study is to outline the past events that have been making up the body of what this science is nowadays. The timeline established is divided into different stages, each of which is defined by its own characteristics resulting in a parti...
Article
Full-text available
Las características tectónicas del margen continental chileno y su intensa y constante actividad sísmica, explican un nutrido historial de eventos catastróficos como sismos y tsunamis. La catástro-fe más reciente es la acontecida el pasado 27 febrero de 2010, terremoto y posterior tsunami. Sin embargo, a pesar de este extenso historial no existe en...
Article
RIVER DYNAMICS, GLOBAL CHANGE AND HUMAN PRESSURE IN EBRO BASIN, CHANNEL AND DELTA. The river Ebro and its tributaries has undergone very remarkable changes since 1950. They have suffered marked process of simplification and stabilization, both in the main river and in its main Pyrenean and Iberian tributaries. They show important changes in the cha...
Article
River restoration in Ebro basin, a synthesis. The ecological condition and functionality of the Ebro basin's rivers have suffered a notable deterioration in the last decades, because of the global change and anthropic pressures. Opposite to this problem, the initiatives of restoration are still scanty, local and very dispersed in the territory. Ebr...
Technical Report
Full-text available
This technical report covers part of previous research conducted by the authors, presented here in four sections: Introduction, The origin of rising rivers, Mechanisms and progression of rising rivers, and Management principles for rising rivers and floods. Rises are seen as the driving force of rivers and of fluvial dynamics. They are natural phen...
Article
Dam removal has been demonstrated to be one of the most frequent and effective fluvial restoration actions but at most dam removals, especially of small dams, there has been little geomorphological monitoring. The results of the geomorphological monitoring implemented in two dams in the rivers Urumea and Leitzaran (northern Spain) are presented. Th...
Poster
Full-text available
Effective water management requires an intregated approach with a balance between socio-economic development and protección of natural ecosystems. It is therefore essential to know the real availability of water in order to develop management measures that, from a holistic perspective, strengthen natural and anthropic systems. In the study area, th...
Article
Full-text available
The development and application of a methodology for the identification of the morphological reference condition and target image for the morphological restoration in the Oiartzun and Oria basins (Gipuzkoa) is presented. The methodology started with the identification of the geomorphological homogeneous river reaches. Two reach-making processes wer...
Conference Paper
Full-text available
Se analiza mediante técnicas Structure from Motion-Multi View Stereoscan (en adelante SfM-MVS) la evolución geomorfológica de un ambiente litoral altamente dinámico: unos de los acantilados de mayor elevación de Europa Continental (A Capelada, A Coruña). A partir de fotogramas aéreos históricos y ortoimágenes aéreas se han generado 10 modelos topog...
Book
Full-text available
Por definición, los riesgos naturales son “la probabilidad de que un territorio y la sociedad que habita en él se vean afectados por episodios naturales de rango extraordinario”. Bajo el título RIESGOS NATURALES Y TERRITORIO. UNA PERSPECTIVA DIDÁCTICA DESDE LA GEOGRAFÍA, se ha elaborado el presente material de apoyo a la docencia. Se trata de un te...
Poster
Full-text available
Geomorphology is a key element for the ecological understanding of fluvial systems. In this study we mapped lithotopo units in order to create spaces with similar geomorphological characteristics. The resulting map provides a very useful tool for the classification of rivers to geomorphic province or watershed level. Though river classification con...