Search results for "WATER"

Water Level Fluctuations in Gallocanta Lake (Spain) Using Sentinel-2 Remote Sensing

2020

This study has been monitored for five years by Sentinel-2 satellite images, at different seasons of the year, of the fluctuations in the water level of the Gallocanta Lake (between the provinces of Teruel and Zaragoza, Aragón, Spain) considered a hypersaline and endorheic wetland, which has characteristics that make it unique in the geographical area in which it is located, as well as for the operation of the system. Rainfall in the area has a wide variation giving the maximums in the months of May and June and the minimums in January and February. There are considerable fluctuations in the water level from the almost total drying of the lagoon to the filling with a depth of app…

Calanchi landforms in south Italy: a comparison between Calabria and Sicilia case studies

2009

The use of barley straw residues to avoid high erosion and runoff rates on persimmon plantations in Eastern Spain under low frequency-high magnitude …

2016

[EN] Soil and water losses due to agricultural mismanagement are high and non-sustainable in many orchards. An experiment was set up with rainfall simulation at 78 mm h(-1) over 1 hour on 20 paired plots of 2 m(2) (bare and straw covered) in new persimmon plantations in Eastern Spain. Effects of straw cover on the control of soil and water losses were assessed. An addition of 60% straw cover (75 gm(-2)) resulted in delayed ponding and runoff generation and consequently reduced water losses from 60% to 13% of total rainfall. The straw cover reduced raindrop impact and thus sediment detachment from 1014 to 47 g plot(-1) h(-1). The erosion rate was reduced from 5.1 to 0.2 Mg ha-(1) h(-1). The …

A multidimensional model based on the Choquet integral to evaluate performance of waterfront redevelopment projects in promoting local growth

2012

The paper aim to construct a multi-criteria model assessing the suitability of waterfront development scenarios to contribute to local growth. The model applies to the city of Catania. It is built according to the strategic directions on territorial government recognized by European Community for Sicily. The evaluation model includes a set of strategic criteria for local social and economic sustainability. The aesthetic and functional regeneration of urban waterfront areas is a very complex issue because of the manifold social, environmental and economic implications. The choice among different alternatives of redevelopment of such a kind of areas should be addressed with typical techniques…

Effects of morphology on watershed actual evapotranspiration estimation by means of SEBAL model

2008

MAJOR AND TRACE ELEMENTS GEOCHEMISTRY IN THE GROUND WATERS OF A VOLCANIC AREA: MOUNT ETNA (SICILY, ITALY)

1998

Thirty-five ground-water samples have been collected from wells, springs and drainage galleries on Mt Etna volcano for the determination of major, minor and trace elements in solution. Attention has been focused in particular on dissolved minor and trace elements, for most of which no data were available in the studied area. In general, dissolution of solids into Etna's ground waters follows from strong interaction between water of meteoric origin, CO2 gas of magmatic origin and the volcanic rocks of the aquifers. However, the R-mode analysis allowed to distinguish several sources of solutes: Al, Co, Ni, Fe, Si, As would derive mainly from alteration of the volcanic rocks of Etna; SO4=, K, …

Vesiupotusmenetelmien vaikutus fyysisestä kuormituksesta palautumiseen miehillä

2017

Johdanto. Palautuminen on tärkeää erityisesti urheilijoiden harjoittelun ja kilpailujen yhteydessä. Sitä tapahtuu harjoituksen tai kilpailun aikana, välittömästi harjoituksen tai kilpailun jälkeen ja pitkäkestoisena harjoitusten ja kilpailujen välillä. Erilaisia palautumismenetelmiä on lukuisia ja niistä tärkeimpiä ovat aktiiviset menetelmät kuten kevyt aerobinen kuormitus sekä liikkuvuusharjoitukset. Passiivisia menetelmiä ovat uni, ravinto (nesteytys), hieronta, fysioterapia, painemenetelmät, lämpömenetelmät ja kylmäkäsittely. Tämän tutkimuksen tarkoitus oli selvittää aktiivisen palautumisen jälkeen suoritettujen eri vesiupotusmenetelmien sekä pelkän aktiivisen palautumisen vaikutusta fyy…

An original experimental approach to study the alteration and/or contamination of archaeological ceramics originated by seawater burial

2014

This paper deals with the proposal of an original experimental methodological approach specifically designed for appraising any compositional alteration and/or contamination of archaeological ceramics after the protracted contact with seawater. A series of ceramic test-pieces (briquettes and cylinders) were purposely manufactured by mixing selected calcareous or non-calcareous clays with different varieties of sieved sand temper. The aim was to reasonably simulate the ceramic pastes most frequently found in the shipwrecks recovered in the coastal areas of western Mediterranean. The used raw materials were previously characterized in terms of mineralogical and chemical composition (XRPD, XRF…

Measuring and Modelling Evaporation Losses from Wet Branches of Lemon Trees

2022

Evaporation losses of rainfall intercepted by canopies depend on many factors, including the temporal scale of observations. At the event scale, interception is a few millimetres, whereas at a larger temporal scale, the number of times that a canopy is filled by rainfall and then depleted can make the interception an important fraction of the rainfall depth. Recently, a simplified interception/evaporation model has been proposed, which considers a modified Merrian model to compute interception during wet spells and a simple power-law equation to model evaporation from wet canopy during dry spells. Modelling evaporation process at the sub hourly temporal scale required the two parameters of …

FLUMO: FLexible Underwater MOdem

2019

The last years have seen a growing interest in underwater acoustic communications because of its applications in marine research, oceanography, marine commercial operations, the offshore oil industry and defense. High-speed communication in the underwater acoustic channel has been challenging because of limited bandwidth, extended multipath, refractive properties of the medium, severe fading, rapid time variation and large Doppler shifts. In this paper, we show an implementation of a flexible Software-Defined Acoustic (SDA) underwater modem, where modulation parameters are completely tunable to optimize performance. In particular, we develop the system architecture following two key ideas. …