Antonios Valsamidis

7 Questions 16 Answers 0 Followers

Questions related from Antonios Valsamidis

How can I estimate the shape and scale parameter of the Generalized Pareto Distribution (GPD) given a specific data-set?

I have already estimated the threshold that I will consider, created the pdf of the extreme values that I will take into account and currently trying to fit to this a Generalized Pareto...

19 May 2017 5,149 3 View

Except for longshore drifts, may we consider additional longshore currents which could potentially influence sediment transport and beach evolution?

Even if this not the case for natural beaches, I am thinking that mega-nourishments and artificial islands in particular might be exposed to additional currents to the longshore drift generated by...

20 March 2017 5,054 7 View

Do you know any estuaries which act as sinks of sediment material and cause beach erosion as well as problems to the coastal structures nearby?

I am looking for real cases of esturies where sediment material from beaches in their vicinity is trapped. As a result, coastal structures like groynes or ports near such estuaries may possibly...

26 September 2016 8,810 4 View

Could you please inform me about some 3D or Q3D (process-based) oceanographic and beach models?

So far I have listed the following 3D models: Pechon and Teisson (1996); Gessler et al. (1999); Lesser et al. (2004; part of the "DELFT3D Suite). Similarly, I know about the following Q3D models:...

10 March 2016 9,963 1 View

Could you provide me with the relative bibliography about how the gap between multiple breakwaters affects the development of salients behind them?

So far I have found a relative paper by Suh and Dalrymple (1987). I am specifically interested in detached (offshore) breakwaters.

25 November 2015 7,189 5 View

How can we determine the permeability of a rock groin or a detached rock breakwater?

I mainly want to calculate the portion of sand which can pass through a rock groyne due to the littoral drift.

24 August 2015 404 6 View

What is the proportion of sediment material flow from a river-mouth which contributes to local accretion instead of moving offshore?

I am looking for a (very) rough estimation of the portion of the sediment flow from a river-mouth which instead of moving and being lost offshore, contributes to the local beach's shoreline evolution.

08 July 2015 2,140 6 View