8 research outputs found
New Methodology for the Classification of Gravel Beaches: Adjusted on Alicante (Spain)
[EN] In this article, a methodology is presented for the classification of gravel beaches, which can be applied internationally.
Such beaches¿ defence against the energy of incoming water flow is due to their steep slopes and the high permeability of
infiltration, but that defence is reduced with increasing sand fraction. The objective of this research was to understand
the variables involved in the formation of gravel beaches, to classify them according to the distribution and position of
sediment along the transversal profile, and to obtain a discriminant function. To apply the methodology, 34 gravel
beaches in the province of Alicante, Spain, were first classified visually into five different types: Type 1: Sand and gravel
beaches, Type 2: Sand and gravel separated beaches, Type 3: Gravel and sand beaches, Type 4: Gravel and sand
separated beaches, and Type 5: Pure gravel beaches. In addition, a major study was performed to reduce the number of
variables because one of the concerns was to find the variables that characterize and classify the beaches. Thus, the 45
variables, grouped according to material characteristics, wave, boundary conditions, and geometry of the beach, were
first reduced to 25 by making comparisons among them and the type of beach and were finally reduced to 14 using the
discriminant method. Note the use of the important variable Posidonia oceanica in the Mediterranean area, which,
because of the changes produced in the swell, was actively involved in the classification. Finally, the discriminant
function obtained was validated.Aragones, L.; Lopez, I.; Villacampa, Y.; Serra Peris, JC.; Saval, J. (2018). New Methodology for the Classification of Gravel Beaches: Adjusted on Alicante (Spain). Journal of Coastal Research. 31(4):1023-1034. doi:10.2112/JCOASTRES-D-14-00140.1S1023103431
New methodology for describing the equilibrium beach profile applied ti teh Valencia's beachs
[EN] Nuevo metodo de determinación de la profundidad de cierre del prfil de playa y su aplicación para ajustar el volumen de arenas de aportación en alimentaciones artificialesAragones, L.; Serra Peris, JC.; Villacampa, Y.; Saval, JM.; Tinoco, H. (2016). New methodology for describing the equilibrium beach profile applied ti teh Valencia's beachs. Geomorphology. 259:1-11. doi:10.1016/j.geomorph.2015.06.049S11125
The Aphidiinae (Hymenoptera : Ichneumonoidea : Braconidae) of Greece
Keys for the identification of genera and species of the subfamily Aphidiinae which occur in Greece as well as the observed parasitoid - aphid relations on various host plants are presented