Results 1 to 10 of about 2,493,652 (215)

Spatial and Annual Temporal Distribution of Ozone Concentrations in the Madrid Basin Using Passive Samplers [PDF]

open access: yesThe Scientific World Journal, 2001
Passive samplers are useful tools for helping to describe the ozone distribution in complex terrain situations. They are also a good complement to continuous monitoring stations.
M.J. Sanz, F. Sanz, G. Sanchez-Peaa
doaj   +3 more sources

Tectono-Sedimentary Evolution of the Madrid Basin (Spain) during the Late Miocene: Data from Paleokarst Profiles in Diagenetically-Complex Continental Carbonates

open access: yesGeosciences, 2020
An intra-Vallesian (Upper Miocene) paleokarst developed at the top of the Intermediate Miocene Unit in the continental intracratonic Madrid Basin is recognized.
Juan Carlos Cañaveras   +4 more
doaj   +3 more sources

Characteristics of a Mg-palygorskite in Miocene rocks, Madrid Basin (Spain) [PDF]

open access: yesClays and Clay Minerals, 2004
AbstractPalygorskite in Miocene mudstones, palustrine limestones and calcretes from the Esquivias locality (Madrid Basin, Spain) has been analyzed by X-ray diffraction, infrared spectroscopy, scanning electron microscopy, transmission electron microscopy and analytical electron microscopy to determine its characteristics and chemical composition. Other
Emilia García-Romero
exaly   +3 more sources

Analysis of summer O3 in the Madrid air basin with the LOTOS-EUROS chemical transport model [PDF]

open access: yesAtmospheric Chemistry and Physics, 2019
Tropospheric O3 remains a major air-quality issue in the Mediterranean region. The combination of large anthropogenic emissions of precursors, transboundary contributions, a warm and dry aestival climate, and topographical features results in severe ...
M. Escudero   +9 more
doaj   +9 more sources

Dolomitization and silicification in low-energy lacustrine carbonates (Paleogene, Madrid Basin, Spain) [PDF]

open access: yesSedimentary Geology, 2002
Repetitive sequences of carbonate deposits, occurrence include in the lower part of the Paleogene Carbonate Unit (northeast border of the Madrid Basin), have been studied, defining regressive lacustrine sequences and early diagenetic processes. Binocular microscopic examination, scanning electron microscopic/energy dispersive X-ray observations, and X ...
Bustillo Revuelta, María Ángeles   +2 more
exaly   +3 more sources

Sedimentology and geochemistry of carbonates from lacustrine sequences in the Madrid Basin, central Spain [PDF]

open access: yesChemical Geology, 1995
Lacustrine and alluvial carbonate facies have been investigated in Middle Miocene successions of the western side of the Madrid Basin in order to evaluate paleoenvironments in which carbonates formed. Carbonate facies are varied and include: ( 1) calcrete and dolocrete; (2) pond deposits; (3) lake margin dolostone; (4) mudflat carbonate; and (5) open ...
Rafael Fort, J P Calvo, C Kendall
exaly   +3 more sources

Advances in the hydraulic interpretation of water wells using flowmeter logs [PDF]

open access: yesHydrology and Earth System Sciences, 2022
This paper reports on the methodology developed for a new hydraulic interpretation of flowmeter logs, allowing a better characterization of continental hydrological basins.
J. Díaz-Curiel   +4 more
doaj   +1 more source

Correlation of Boreholes through Well Logs: Application to the Western Sector of Madrid

open access: yesSensors, 2023
This study correlates the results obtained from the resistivity and spontaneous potential well logs in six boreholes for water extraction, located in the multilayer siliciclastic basin in the Madrid region, in the center of the Iberian Peninsula.
Jesús Díaz-Curiel   +4 more
doaj   +1 more source

Nitrogen Deposition Effects on Soil Properties, Microbial Abundance, and Litter Decomposition Across Three Shrublands Ecosystems From the Mediterranean Basin

open access: yesFrontiers in Environmental Science, 2021
Atmospheric nitrogen (N) inputs in the Mediterranean Basin are projected to increase due to fossil fuel combustion, fertilizer use, and the exacerbation of agricultural production processes.
Mauro Lo Cascio   +18 more
doaj   +1 more source

The Lake Chad transboundary aquifer. Estimation of groundwater fluxes through international borders from regional numerical modeling

open access: yesJournal of Hydrology: Regional Studies, 2021
Study Region: Africa. The Lake Chad transboundary aquifer Study Focus: To understand transboundary groundwater hydrodynamics and estimate quantitative groundwater fluxes values between aquifer-sharing countries.
Guillermo Vaquero   +6 more
doaj   +1 more source

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