The ascent of magmas     

Alfredo Rittmann 《Bulletin of Volcanology》1962,24(1):315-318

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Special publications around the world mark the International Year of Planet Earth     

I. J. Graham  B. R. Figueiredo  L. Hidalgo Nunes 《Environmental Geology》2008,54(4):893-894

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Factors Affecting Domestic Water Consumption on the Spanish Mediterranean Coastline     

Rubén Alejandro Villar-Navascués  Alfredo Pérez-Morales 《The Professional geographer》2018,70(3):513-525

During the last decades on the Spanish Mediterranean coastline there has been a great development of low-density urban areas, as well as a change in the sociodemographic structures, especially in the municipalities that have developed a residential tourism model. Likewise, urban and tourist development have stressed the balance between the availability of water resources and urban water demands, generating situations of scarcity that might be aggravated by climate change. This study identifies the determinants of water consumption on the Spanish Mediterranean coastline, focusing on the variables related to urban land uses and socioeconomic and sociodemographic variables at the municipal level using an ordinary least square (OLS) and a geographically weighted regression (GWR) model. The GWR model results substantially improved the results of the OLS model, explaining 88.27 percent of the variance in domestic water consumption and solving the spatial autocorrelation problem of some independent variables. The most influential variables include the percentage of second homes or the percentage of residential properties with swimming pools at the municipal level. These characteristics must be considered to develop demand management policies and an updated hydrological planning to ensure urban supply in a future with less available water resources.  相似文献   

Shallow landslide susceptibility mapping using high-resolution topography for areas devastated by super typhoon Haiyan     

Maricar L. Rabonza  Raquel P. Felix  Alfredo Mahar Francisco A. Lagmay  Rodrigo Narod C. Eco  Iris Jill G. Ortiz  Dakila T. Aquino 《Landslides》2016,13(1):201-210

Super typhoon Haiyan, considered as one of the most powerful storms recorded in 2013, devastated the central Philippines region on 8 November 2013 with damage amounting to more than USD 2 billion. Hardest hit is the province of Leyte which is located in central Philippines. Rehabilitation of the areas that were devastated requires detailed hazard maps as a basis for well-planned reconstruction. Along with severe wind, storm surge, and flood hazard maps, detailed landslide susceptibility maps for the cities and municipalities of Leyte (7246.7 km²) province are necessary. In order to rapidly assess and delineate areas susceptible to rainfall-induced shallow landslides, Stability INdex MAPping (SINMAP) software was used over a 5-m Interferometric Synthetic Aperture Radar (InSAR)-derived digital terrain model (DTM) grid. Topographic, soil strength, and hydrologic parameters were used for each pixel of a given DTM grid to compute for the corresponding factor of safety. The landslide maps generated using SINMAP are highly consistent with the landslide inventory derived from high-resolution satellite imagery from 2002 to 2014 with a detection percentage of 97.5 % and missing factor of 0.025. These demonstrate that SINMAP performs well despite the lack of an extensive geotechnical and hydrological database in the study area. The detailed landslide susceptibility classification is useful to identify safe and unsafe areas for reconstruction and rehabilitation efforts. These maps complement the debris flow and structurally controlled landslide hazard maps that are also being prepared for rebuilding Haiyan’s devastated areas.  相似文献   

Weibull Wind-Speed Distribution Parameters Derived from a Combination of Wind-Lidar and Tall-Mast Measurements Over Land,Coastal and Marine Sites     

Sven-Erik Gryning  Rogier Floors  Alfredo Peña  Ekaterina Batchvarova  Burghard Brümmer 《Boundary-Layer Meteorology》2016,159(2):329-348

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Climate change in the Iberian Upwelling System: a numerical study using GCM downscaling     

Ana Cordeiro Pires  Rita Nolasco  Alfredo Rocha  Alexandre M. Ramos  Jesus Dubert 《Climate Dynamics》2016,47(1-2):451-464

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La frana di Casa Le Rive in comune di Fumane (Verona)     

Prof Alfredo Boni 《Pure and Applied Geophysics》1946,9(1-2):81-94

Riassunto Vengono esaminate le caratteristiche della frana di C. le Rive in Comune di Fumane (Verona), lc condizioni topografiche, geologiche, idrografiche (superficiali e sotterranee) della zona, le circostanze meteorologiche che l'hanno preceduta, e vengono indicati i lavori possibili e necessari per evitare che essa si ripeta e si estenda.Si cerca poi di collocare la frana nelle più importanti classificazioni italiane. Essa corrisponde aglislumps delSharpe, che possiamo tradurre, con preeisazione di significato, come «smottamenti».

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Summary The caracteristics of the landslide of C. le Rive (Comune di Fumane, Verona), the topographical, geological and hydrographical (at the surface and underground) conditions of the region, the meteorological circumstances come before are examined, and all the necessary works are advised in order to prevent its repeating and enlarging.It is tried to put the phenomenon in the most important italian classifications. It corresponds to theSharpe's slump, that we may translate, with a strict meaning, «smottamento».

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Tracing salinization processes in coastal aquifers using an isotopic and geochemical approach: comparative studies in western Morocco and southwest Portugal     

Paula M. Carreira  Mohamed Bahir  Ouhamdouch Salah  Paula Galego Fernandes  Dina Nunes 《Hydrogeology Journal》2018,26(8):2595-2615

Environmental stable and radioactive isotopes (δ²H, δ¹³C, δ¹⁸O; ³H and ¹⁴C), together with physical and geochemical data, were used in the determination of the origins of groundwater salinization and geochemical evolution processes in coastal regions. Two case studies on the Atlantic Coast are discussed, one located in the Essaouira sedimentary basin, western Morocco, and the second, in the Lower Tagus–Sado sedimentary basin, southwest Portugal. In both regions, groundwater degradation occurs by salinization increase to different concentrations and in relation to different origins. The main quality issues for the groundwater resources are related to seawater intrusion, dissolution of diapiric structures intruding the aquifer layers, brine dissolution at depth, and/or evaporation of irrigation water. Anthropogenic pollution ascribed to agricultural activities is another source for groundwater degradation, affecting mainly the shallow aquifers. The apparent ¹⁴C age of the analysed samples ranges from 2.9?±?0.3 up to 45.6?±?0.6 pmC in the Miocene groundwater samples from the basin in Portugal; at the Essaouira basin in Morocco, the ¹⁴C content varies from 60 to 86 pmC. In most of the water samples, the ³H concentration is below the detection limit. In both basins, the isotopic results together with the geochemical data provided an effective label for tracing the mineralization origin and groundwater degradation processes. Further, the isotopic signatures were used in the identification of a paleoclimate (colder period), recorded in the stable isotopic composition and corroborated with the ¹⁴C data.  相似文献   

Spatial and temporal variation of natural recharge in the semi-arid valley of Aguascalientes,Mexico     

Martín Hernández-Marín  Lilia Guerrero-Martínez  Alfredo Zermeño-Villalobos  Lorena Rodríguez-González  Thomas J. Burbey  Jesús Pacheco-Martínez  Sergio I. Martínez-Martínez  Norma González-Cervantes 《Hydrogeology Journal》2018,26(8):2811-2826

The investigation involves a temporal and spatial analysis to characterize recharge in the Aguascalientes valley in central Mexico. The results are based on a two-part methodological strategy using a geospatial and numerical analysis. Results from the geospatial analysis are based on the analytical hierarchical process (AHP) method, which involves developing a zoning map that qualifies the conditions for groundwater recharge in the valley. In addition, one-dimensional numerical modeling based on the van Genuchten equation was applied for various soil column configurations to estimate the transit time of recharge through the vadose zone. The analysis was performed over a 20-year period from 1995 to 2015. The results of the geospatial analysis indicate that the optimal area for groundwater recharge is the lower zone of the valley, particularly the portion influenced by surface discontinuities. The shortest estimated period of recharge for water to pass through the vadose zone is approximately 4.25 years.  相似文献   

Seismic vulnerability assessment and fragility analysis of pre-code masonry buildings in Portugal     

Bernardo  Vasco  Campos Costa  Alfredo  Candeias  Paulo  Costa  An&#;bal 《Bulletin of Earthquake Engineering》2022,20(11):6229-6265

Bulletin of Earthquake Engineering - Despite the fact that in recent years Portugal has not seen the occurrence of high-magnitude earthquakes, it remains threatened by these events due to its...  相似文献