Isabel Montoya-Montes

University of São Paulo | USP · Departamento de Oceanografia Física, Química e Geológica (Sao Paulo)

The studies about benthic habitat characterization and maping are important contributions to subside the understanding of the costal areas and marine spacial planning, indentifying areas more or less suitable to fisheries. The present work aims the description of the relationship among bedforms, water masses, granulometry of superficial sediment an...

Canary archipelago is formed by seven main islands and several islets that extends for nearly 500 km across the eastern Atlantic, between latitudes 27°N and 30°N, lying its eastern edge only 100 km from the NW African coast.

The Ebro Delta is one of the most significant coastal sedimentary formations in Spain, not only for being the largest and most important delta in the country, but also for presenting several active dune fields on it. In addition, other ecosystems such as salt marshes and lagoons contribute to conform a characteristic and unique habitat.

Rocky coasts, widely present along the world shorelines, have been studied from different points of view. Some sectors of rocky coast at Catalonia has been mapped and described by several authors along time. This paper includes a revision of those studies and analyzes some topographical data in order to obtain a global geomorphological characteriza...

São Sebastião Island (SSI) marks the latitudinal boundary between two sedimentological and geochemical provinces in the São Paulo Bight, an arc-shaped sector of the southeastern Brazilian Shelf. The island is separated from the continent by the narrow, deep São Sebastião Channel (SSC). A relatively thick sediment wedge—the São Sebastião Wedge (SSW)...

Uno de los elementos que identifica al delta del Ebro es la presencia de campos dunares más o menos extendidos en la práctica totalidad de su litoral. Si bien, su desarrollo y conservación se encuentran muy amenazados, en las flechas que limitan al delta por el norte y por el sur, su presencia es característica. Desde el punto de vista ambiental, u...

During the five decades between 1964 and 2015, the coastline of Tazacorte (La Palma, Canary Islands) has suffered some significant changes. The main anthropic intervention was the construction of the port of Tazacorte in the 70’s. The determining natural processes in the area are the waves and the runoff that occur through the Las Angustias ravine....

Volcanic insular shelves are particularly interesting environments from the sedimentological point of view due to their grain size and compositional variability, which is related to the numerous processes that control sedimentation. The aim to achieve in this paper is related with the surface sedimentary characterization at Gran Canaria insular she...

Analysis of marine sediments is costly in terms of money, time and effort, and therefore it is important to evaluate if the visual characterization made by an observer matches the values got after fulfilling the corresponding analysis. To do that we have used 447 very different samples collected from the shelf of Gran Canaria Island. One single obs...

Surface sediment samples recovered in the São Paulo Bight (SW Atlantic) were collected between 45 to 1132 m water depths to characterize sedimentary processes based on a multiproxy approach. This study analysis benthic foraminifera and abiotic data, including granulometry, TOC and C/N values. Spatial and yearly distributions of ocean chlorophyll-a...

São Sebastião Island (SSI), located in the São Paulo Bight, southeastern Brazil, represents a major boundary between the shelf to the south, mainly covered by a muddy recent depocenter derived from the supply of de la Plata River, and the shelf to the north, where sediment distribution exhibits a patchy pattern, with variable amounts of sands and m...

In this study, published and unpublished data from the Santos Estuarine Complex and Bay and the adjacent continental shelf (São Paulo State, Brazil) were gathered in order to evaluate the entrapment of anthropogenic chemical contaminants (hydrocarbons, heavy metals) in a mid-shelf mud depocentre. Results show that these contaminants, produced by in...

Metallic mining wastes are a crucial environmental concern because of the accumulation and emission of toxic elements. The abandoned San Quintín mine tailings, from the exploitation of galena and sphalerite (Puertollano mining district, Spain), are surrounded by farmland and are crossed by the European Cultural Itinerary known as the "Don Quixote R...

The São Sebastião Island, located in the Bight of São Paulo, southeastern Brazil, holds a kilometric scale deposit whose distribution, internal structure and age are still unknown. Due to its geographical position, it is believed that the deposit genesis is the result of the combined influence of the Brazil Current to the north, and the sediment pl...

The extraordinary wave storms produced in February and March 2014 caused severe beach erosion and dune front retreat in the Cantabrian and Galician coasts, including some outer estuarine areas, as well as many damages in infrastructures (jetties, roads, footpaths, car parks, recreational areas, stairs on the beach, urban furniture, etc.). Some Astu...

The presence of fossil or relict bedforms is common in the Quaternary fill of modern continental shelf due to sea level oscillations, tectonic subsidence and migration of associated sedimentary facies. The continental margin of the Gulf of Valencia has been strongly influenced by glacio-eustasy and neotectonic. High-resolution multibeam bathymetry...

Dune systems have a complex dynamics which is difficult to model purely physical due to the no linearity of the wind shear stress estimation, the complexity of the dune systems geomorphology and the difficult to obtain real world field data to test them. Cellular models offer an interesting alternative approach with simple data entry requirements a...

Resumen: El litoral y la plataforma continental interna son regiones marinas que suelen estudiarse por separado, si bien los procesos hidrográficos, el transporte de sedimentos y la morfología del relieve en ambas regiones están íntimamente relacionados, con múltiples interacciones entre ellos. Los estudios topo-batimétricos y de corrientes en las...

OLSO AVAILABLE IN: http://www.io.usp.br/index.php/component/booklibrary/413/view/46/Livros/7/manual-de-metodos-em-teledeteccion-aplicada-a-la-prevencion-de-riesgos-naturales-en-el-litoral-ii

This special issue of Geo-Marine Letters presents selected contributions from the 6th Spanish Conference on Coastal Geomorphology held from 7–9 September 2011 in Tarragona, Spain. The guest editors are Isabel Montoya Montes, Maria J. Sánchez García and Inmaculada Rodríguez Santalla. These conferences on coastal geomorphology are held biannually and...

The objective of this study is to document and interpret a recently discovered carbonate-cemented coastal barrier on the inner shelf of the Gulf of Valencia (western Mediterranean Sea). The coastal barrier was identified in a high-resolution digital bathymetric model based on a cartographic survey of the study area using a multibeam echosounder. Mo...

Numerous studies have shown that most beaches and coastal dune systems of the world are currently eroding but very few have investigated the combined sediment budgets of subaerial and nearshore submarine systems. In the case of the dune field of the Maspalomas Natural Special Reserve (in the south of Gran Canaria), the adjacent Maspalomas and El In...

Coastal and inner shelf marine areas are usually studied separately, although the hydrodynamics processes, sediment transport and relief morphology in both regions are closely related, with complex interactions between them. Topo-bathymetric and physical oceanographic surveys on south of Gran Canaria beaches and inner shelf show as sediment fluxes...

The weathered and fractured conglomerate cliffs of Mont Roig del Camp constitute a rock fall hazard for the surrounding pocket beaches and, therefore, for the population that frequent them, especially over the summer. Landslide susceptibility of the cliff has been assessed using the Rock Engineering System method (RES). The determinant and triggeri...

Geología. Fac. Ciencias del Mar.11510 Puerto Real (Cádiz). Resumen En el presente trabajo se ha realizado un análisis evolutivo de las distintas unidades geomorfológicas presentes en la desembocadura del delta del Ebro con el objetivo de evaluar, mediante la metodología de análisis de cambios, las variaciones más relevantes que tienen lugar en dich...

The accident and sink of the tank ship Prestige, that occurred offshore of the Galicia coast (northwest Spain) on November 2002, caused a large oil spill with important ecological and economic consequences for the Galician and Cantabrian littoral. Different data sets obtained through monitoring of the oil spill by over flight observation, satellite...

The increasing amount of people that every year visits the coastal areas makes necessary to carry out a detailed analysis The increasing amount of people that every year visits the coastal areas makes necessary to carry out a detailed analysis of all the processes that occur in these areas, in order to avoid the damages that the natural processes c...

The littoral is the area where marine and terrestrial processes superpose and interact. Limits of their respective actions are imprecise, as processes which are characteristic of each of these environments do overlap. This particular characteristic makes the littoral zone complex and vulnerable to human activity, which in many cases, causes irretri...

Ground penetrating radar is a non-invasive technique that allows the study of the structure of dune Systems when outcrops are limited or protected. GPR response of sand dunes of the Holocene aeolian dunes of the Ebro River Delta (Spain) has been analyzed in this study in order to: characterise their internal architecture, determine their developmen...

This paper presents an analysis of the dune field dynamics of El Fangar Spit in the Ebro Delta (Spain), associating it with the internal structure of dunes carried out with ground-penetrating radar and supported by data from topographic DGPS. These analyses are of great importance to ascertain the state of the internal structure of dunes as an impo...

Bathymetric, 3D relief and shaded relief maps created from multibeam echo-sounding data image the morphology of the Alborán Basin, a structural low along the east–west-trending Eurasian–African plates boundary. Topographic features in the basin are the consequence of volcanism associated with Miocene rifting, rift and post-rift sedimentation, and r...