Impactos ENSO en cuencas atlánticas de Sudamérica

Interannual changes in precipitation cause significant effects on the Pacific watersheds of South America. Large rivers flowing to the Atlantic Ocean as the Paraná and Uruguay are also influenced by ENSO-triggered floods causing significant impacts on the economies of Argentina, Brazil and Uruguay. At the same time, the floodplains of small rivers are also sensitive to strong ENSOs. Floods occur approximately simultaneously in subtropical watersheds of Brazil and high-latitude watersheds of North Patagonia. ENSO-triggered floods were recorded during the years 1941-42, 1982-83 and 1997- 98. Several floods impacted along the Itajaí River affecting the higher (Blumenau city) and lower estuary (Itajaí city). The Guaiba River, at the headlands of Lagoa dos Patos, has repeatedly flooded Porto Alegre. At the Río de la Plata basin, significant increases in the discharges were assigned to the Paraná and the Uruguay rivers. The small basin of the Quequén Grande River without extended floodplains is subject to periodic failure of its margins. The Colorado River, the northern limit of Patagonia, is allochthonous and its watershed was artificial and progressively modified; the ENSO event of 1983 caused an increase in its salinity due to the sudden reactivation of the DesaguaderoCuracó system.Los cambios interanuales en las precipitaciones causan significativos efectos en las cuencas pacíficas de Sudamérica. Los grandes ríos que fluyen hacia el Océano Atlántico como el Paraná y el Uruguay también son influenciados por estas inundaciones originadas por estos eventos ENSO causando significativos impactos en las economías de Argentina, Brasil y Uruguay. Asimismo, las planicies aluviales de los pequeños ríos también son sensibles a los ENSOs fuertes. Las crecidas ocurren casi simultáneamente en las cuencas subtropicales de Brasil como en las cuencas de altas latitudes de Patagonia. Inundaciones gavilladas por eventos ENSO fueron registradas en los años 1941-42, 1982-83 y 1997-98. Varias inundaciones afectaron al río Itajaí afectando las porciones más altas (Blumenau) y bajas del estuario (Itajaí). El río Guaíba, en las cabeceras de la Lagoa dos Patos, ha repetidamente inundado Porto Alegre. En la cuenca del Río de la Plata, incrementos significativos de su descarga fueron originados por los ríos Paraná y Uruguay. La pequeña cuenca del río Quequén Grande sin grandes planicies aluviales está sujeta a periódicos derrumbes de sus albardones. El río Colorado, límite norte de la Patagonia, es alóctono y su cuenca fue progresiva y artificialmente modificada; el ENSO de 1983 causó un aumento de su salinidad debido a la súbita reactivación del sistema DesaguaderoCuracó.Fil: Isla, Federico Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Toldo Junior, Elirio Ernestino. Universidade Federal do Rio Grande do Sul; Brasi

The Tourism Attractiveness of Landforms in Łagiewnicki Forest, Łódź

The article is an attempt to present the attractiveness of the recreational area of Łagiewnicki Forest in Łódź as regards the diversity of its relief. The work is based on an analysis of digital elevation models, using GIS techniques and direct observations. Based on an analysis of the relief, the authors have proposed a new tourism trail focused on the ‘morphometric assets’ of the area

Caracterização dos solos de São José do Norte, Tavares e Mostardas-RS.

bitstream/item/41366/1/Sao-Jose-do-Norte.pdf; bitstream/item/41367/1/mapa-mostarda-capacidade-de-uso.pdf; bitstream/item/41368/1/mapa-mostarda-geomorfologia-e-solos.pdf; bitstream/item/41369/1/mapa-mostarda-solos.pdf; bitstream/item/41370/1/mapa-santa-vitoria-do-palmar-capacidade-de-uso.pdf; bitstream/item/41371/1/mapa-santa-vitoria-do-palmar-geomorfologia.pdf; bitstream/item/41372/1/mapa-santa-vitoria-do-palmar-solos.pdf; bitstream/item/41373/1/mapa-sao-jose-capacidade-de-uso.pdf; bitstream/item/41374/1/mapa-sao-jose-do-Norte.pdf; bitstream/item/41375/1/mapa-sao-jose-geomorfologia-e-solos.pdf; bitstream/item/41376/1/mapa-sao-jose-solos.pdf; bitstream/item/41377/1/mapa-Tavares-capacidade-de-uso-de-terras.pdf; bitstream/item/41378/1/mapa-Tavares-geomorfologia-e-solos.pdf; bitstream/item/41379/1/mapa-Tavares-solos.pd

Sedimentology and Stratigraphy of the Pleistocene sediments in Lake Llauset (Southern Pyrenees, Spain)-a first approach

The high alpine valleys in the Southem Pyrenees are characterised by a many small lakes and ponds. They occur above 2000 m and are said to have been formed by glacial erosion. The sediments in these basins should, therefore, contain s t p tigraphic information since deglaciation, at least. An interesting and may be one of the most important of these basins is Lake Llauset in the Alta Ribagorca. The Llauset basin has recently been developped for hydsopower production. In conection with the construction of the retaining wall at the 'Riegel' the sedimentary filling of the lake basin could be investigated, and the first sedimentological and stratigraphicalresults are presented

Sinuessa, un approdo sommerso di epoca romana

SINUESSA, UN APPRODO SOMMERSO DI EPOCA ROMANA Archeologia, geomorfologia costiera, strategie sostenibili di valorizzazione. La monografia raccoglie i contribuiti di studi e ricerche condotti negli ultimi anni nell’area archeologica marina di Sinuessa nel golfo di Gaeta in Campania. Alla realizzazione del volume hanno contribuito diversi autori, specialisti in differenti discipline quali la geomorfologia costiera, archeologia e beni culturali con la finalità di suggerire agli amministratori e stakeholder del litorale domitio strategie sostenibili per la valorizzazione dell’approdo sommerso di epoca romana

Zoneamento geológico e geomorfológico entre Feijó e Mâncio Lima: Acre.

Introdução; Metodologia; Geologia da área; Geomorfologia da área; Anexosbitstream/CPAF-AC/15627/1/doc99.pd

Geographical location and regional diversity of Poland

Published in: Natural environment of Poland and its protection in Łódź University Geographical Research, edited by E. Kobojek and T.Marsza

Upper Agri Valley (Basilicata) between Geomorphology and Ancient Settlements

In this paper we present the geoarchaeological and landscape project on the Upper Agri Valley (Basilicata). Between 2012 and 2015 we coordinated multidisciplinary research with the purpose of reconstructing the history and evolution of the territory, analysing the relationships between man and landscape from the Prehistory to the Middle Age. The studied area, an inland mountain valley situated in the ancient Lucania, is very important, because it is a fundamental route between the two coasts of Magna Graecia and because during the Roman period this valley was the territory in which Grumentum was born, one of the most important towns of Roman Southern Italy. Thanks to the dialogue between different competences, this project aims at understanding the settlements dynamics and the mutual influences between man and environment: indeed, we conducted geophysics and geoarchaeological investigations, archaeological surveys, cartographic and aerial photos studies, written sources analysis: in this way, different data are used to understand the landscape from a global point of view

Impact on soil degradation factors of changes in rain intensity patterns in southern Spain

In southern of Spain, the torrential nature of the rainfalls alters the soil water availability for vegetation and, consequently, its spatially and temporally pattern. This fact, combined with the current global warming, raises a modification of the eco-geomorphological processes dynamics in Mediterranean areas