Xabier Herrero

• Teacher at University of the Basque Country

Objective: Detect and analyse forest fires happening in the Cobos-Parga Hydrographic Basin. Design/methodology/approach: For this analysis, the methodology that was followed ranges from the extraction of satellite images to the calculation of the Normalised Burn Ratio, thus enabling the detection of combusted zones. All this work was done thanks to...

Dams, weirs and transverse barriers to rivers interrupt sediment continuity and reduce sediment supply down- stream. In this regard, dam removal is an increasingly used river restoration measure to recover longitudinal connectivity of sediment, among many other river processes. In this work we present a 6-year (from 2016 to 2022) monitoring of bedl...

Weirs, dams and other barriers in rivers represent nodes of longitudinal sediment discontinuity. Therefore, one of the main focuses of today's river restoration works is the restoration of a more natural sediment dynamics downstream of transverse barriers in rivers. In this regard, in this work we present the case study of the Olloki weir in the ri...

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...

Multiple ridges across prograding coasts may display variable geometries, commonly expressed through varying elevations. Changes in ridge elevation have been traditionally related to the occurrence of fluctuating progradation rates, which might, in turn, be driven by shifting environmental conditions. Here, we explore the geometry and growth mechan...

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...

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...

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...

The development and application of a methodology for the identification of the morphological reference condition and target image for river restoration is presented. The methodology started with the identification of the geomorphological homogeneous river reaches. Two reach-making processes were developed; one based on crossed variables by GIS tool...

Resumen Se presenta la metodología diseñada para el seguimiento geomorfológico del derribo de las presas de Mendaraz (río Urumea) e Inturia (río Leitzaran) en Gipuzkoa, así como los resultados obtenidos. Se han realizado secciones transversales, perfiles longitudinales, abundantes mediciones de procesos sobre testigos, mediciones con escáner láser...

Resumen Se presenta el desarrollo y la aplicación de una metodología para la identificación de la condición de referencia e imagen objetivo alcanzable para la restauración de la morfología fluvial en las cuencas de Oiartzun y Oria en Gipuzkoa. El principio metodológico lo constituye una tipificación, que identifica tramos homogéneos geomorfológicam...

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...

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...