Searched for: subject%3A%22vegetation%22
(1 - 20 of 24)

Pages

document
Zhou, J. (author), Liu, Xuan (author), Xiong, Xuqian (author), Jia, Li (author), Lu, Jing (author), Cui, Yilin (author)
Satellite-based Earth Observation systems archived a variety of vegetation products during the last 50 years, which can reveal regional to global ecosystem dynamics across diverse spatiotemporal scales. The anomaly metrics such as Vegetation Condition Index (VCI) defined by comparing the current vegetation growth condition to historical...
conference paper 2022
document
Pannozzo, N. (author), Leonardi, N. (author), Carnacina, I. (author), Smedley, R. (author)
Salt marshes are ecosystems with significant economic and environmental value. They provide numerous services, including nutrient removal, habitat provision and carbon sequestration (Barbier et al., 2011). They are also widely recognised as nature-based solutions for coastal defence due to their ability to buffer storm waves (Leonardi et al.,...
conference paper 2021
document
Zhang, H. (author), Wahls, S. (author), Brühl, M. (author)
In the past decade, observations in the German estuaries such as the rivers Elbe and Weser show increasingly serious damage to bank protection structures (groins and revetments). This damage is caused mainly by waves induced by the passing of big container ships in the shallow and narrow maritime waterways. These ship-induced 3D wave fields...
conference paper 2021
document
Zhang, H. (author), Wahls, S. (author), Brühl, M. (author)
In the past decade, observations in the German estuaries such as the rivers Elbe and Weser show increasingly serious damage to bank protection structures (groins and revetments). This damage is caused mainly by waves induced by the passing of big container ships in the shallow and narrow maritime waterways. These ship-induced 3D wave fields...
conference paper 2021
document
Kamath, A.C. (author), Gard, W.F. (author), van de Kuilen, J.W.G. (author)
Tropical hardwood or treated wooden sheet piles have been used historically to protect stream banks in countries like the Netherlands. However, there is an imminent need for alternative as exploitable tropical hardwood forests available in the country is limited. Locally available softwoods are less resistant to decay and in extreme conditions...
conference paper 2021
document
Truong, S.H. (author), Li, Un (author), Uijttewaal, W.S.J. (author)
Transverse exchange processes of mass and momentum in floodplain regions of channels are of primary importance regarding the sediment transport and riverbank stability. The presence of large horizontal coherent structures (LHCSs) at the interface of the floodplain and main channel regions may contribute up to 90% the amount of transverse...
conference paper 2020
document
Jamalinia, E. (author), Vardon, P.J. (author), Steele-Dunne, S.C. (author)
Climatic conditions and vegetation cover influence water flux in a slope which affect the pore water pressure and self weight, hence its stability. High evapotranspiration and low precipitation rates during summer cause dry soil with low soil moisture (SM) that leads to soil shrinkage, which leads to cracking and reduced shear strength, which...
conference paper 2020
document
Jamalinia, E. (author), Sadeghi Tehrani, F. (author), Steele-Dunne, S.C. (author), Vardon, P.J. (author)
Water fluxes in slopes are affected by climatic conditions and vegetation cover, which influence the effective stress and stability. The vegetation cover is the intermediate layer between the atmosphere and the slope surface that alter water balance in the slope through evapotranspiration and leaf interception. This paper studies the datadriven...
conference paper 2020
document
Steele-Dunne, S.C. (author), Khabbazan, S. (author), Vermunt, P.C. (author), Ratering Arntz, A.M. (author), Marinetti, C. (author), Iannini, L. (author), Westerdijk, K. (author), van der Sande, C. (author)
In this study, we performed ground validation to support the interpretation of Sentinel-1 imagery during a full growing season of five key crop types in the Netherlands. Crop height and growth stage were monitored weekly in a total of 25 parcels of maize, potato, sugar beet maize and English rye grass in the province of Flevoland....
conference paper 2018
document
Kamerling, M.W. (author)
The paper presents the structural design of a thin barrel vault constructed with Fusée Ceramique infill elements. The load transfer is analyzed and validated. For the structure composed of Fusée Ceramique elements, steel and concrete the stresses are calculated and compared to the stresses given in the codes used from 1950 to the present. The...
conference paper 2013
document
Janssens, M.M. (author), Kasse, C. (author), Bohncke, S.J.P. (author), Greaves, H. (author), Cohen, K.M. (author), Wallinga, J. (author), Hoek, W.Z. (author)
In the Weichselian, the Lower Rhine in the Dutch-German border region has used three courses, dissecting ice-marginal topography inherited from the Saalian. In the Late Weichselian, the three courses functioned simultaneously, with the central one gaining importance and the outer ones abandoning. This study aims to reconstruct the fluvial...
conference paper 2012
document
Ali, S. (author), Uijttewaal, W.S.J. (author)
At high water stages obstacles in the floodplains of a river contribute to the flow resistance. In particular the elevated vegetated parts are expected to play an important role. The objective of this study is to estimate and parameterize the form drag due to vegetated oblique weir-like obstacles. An experimental study has been carried out in...
conference paper 2011
document
Mangone, G. (author), Van der Linden, K. (author)
conference paper 2011
document
Cattaneo, N. (author), Di Maria, F. (author), Guzzetti, F. (author), Privitera, A. (author), Righetti, G. (author)
In the last eight years the structure of Topographical Database of green areas has been implemented and consolidated: originally born to manage green areas in Milan, it is now used in other cities. Beside the optimizations achieved in data management (i.e. relationship between data and working process, updating procedures, exhaustive Index of...
conference paper 2011
document
Narayan, S. (author), Suzuki, T. (author), Stive, M.J.F. (author), Verhagen, H.J. (author), Ursem, W.N.J. (author), Ranasinghe, R. (author)
A study of the effectiveness of mangroves in attenuating cyclone- induced waves was done using the SWAN 40.81 numerical model. Hydraulic parameters during extreme events and local mangrove vegetation parameters were estimated for the Kanika Sands mangrove island near the upcoming Dhamra Port in Orissa, India. Simplified generic analyses were...
conference paper 2010
document
Suzuki, T. (author), Arikawa, T. (author)
In this paper, bulk drag coefficient in rigid dense vegetation is investigated mainly by using a three dimensional numerical simulation model CADMAS-SURF/3D by incorporating Immersed Boundary Method to calculate flow around the vertical cylinder in the Cartesian grid. Large Eddy Simulation is also incorporated as a turbulence model. Firstly,...
conference paper 2010
document
Maffei, C. (author), Menenti, M. (author)
The increasing demand for effective forest fire prevention instruments has faced operational and future Earth observation instruments with the challenge of producing updated and reliable maps of vegetation moisture. Various empirical band-ratio indexes have been proposed so far, based on multispectral remote sensing data, that have been found to...
conference paper 2010
document
Samir-Saleh, M. (author), Crosato, A. (author)
Flume experiments and field observations demonstrating the effects of vegetation on river planforms are reported in literature, but numerical studies of these effects at the river scale are lacking. We investigated the effects of vegetation in a 2D morphodynamic model using submodels for flow resistance and colonisation of newly formed deposits....
conference paper 2010
document
Dijkstra, J.T. (author)
Seagrasses are a valuable but threatened part of coastal systems. To aid restoration attempts, a model has been made to study the effect of such flexible aquatic vegetation on flow and sediment transport. Because this model needs to be tested against field results, a field experiment was undertaken around an eelgrass meadow in Dinard, France....
conference paper 2009
document
Abd Rahman, M.Z. (author), Gorte, B.G.H. (author), Bucksch, A.K. (author)
High density airborne LiDAR, for example FLI-MAP 400 data, has opened an opportunity for individual tree measurement. This paper presents a method for individual tree delineation and undergrowth vegetation removal in forest area. The delineation of individual trees involves two steps namely 1) tree crown delineation based on density of high...
conference paper 2009
Searched for: subject%3A%22vegetation%22
(1 - 20 of 24)

Pages