Fluvial/wave interaction controls on delta formation for ephemeral rivers discharging into microtidal waters

A study of the deltaic coast morphometry of river Pinios in relation to its hydro- & sediment dynamics

“…Therefore, successful comparisons can be made between analogous river/delta systems, as for example between the rivers Pinios and Aliakmon, (offshore Ef=2.40xl0" 2 ; from Poulos et al 1993) with the latter being characterized as fluvial dominated, as it has being formed in the semi-enclosed embayment of the inner Thermaikos Gulf. The potential longshore sediment transport rate Ql has been calculated for the four regions of the deltaic coast, which have been defined according to their orientation (see Fig.…”

The consequences of a future eustatic sea-level rise on the deltaic coasts of Inner Thermaikos Gulf (Aegean Sea) and Kyparissiakos Gulf (Ionian Sea), Greece

“…Here, a Bruuntype model could be used with reasonable accuracy. The estimation of the shoreline position is based mainly upon the analysis of the topographic and geologic conditions of the delta areas, as well as previous detailed studies of the nearshore hydrodynamic and morphodynamic conditions in Kyparissiakos Gulf (Ghionis and Ferentinos, 1992;Ghionis, 1993Ghionis, , 2001 and in NW Thermaikos Gulf (Poulos et al, 1993). The reasoning behind these estimates is explained in detail in the Results and discussion section.…”

Wind‐forced seiche events on Great Slave Lake: hydrologic implications for the Slave River Delta, NWT, Canada

“…The ratio provides a method for hydrological comparisons among deltas. However, use of this index for comparative pursuits is restricted to larger deltas, as demonstrated by Poulos et al (1993), because the seasonal variability in river discharge and sediment load in small delta systems is of greater significance to the hydrological characteristics of the delta than just the effective discharge and wave climate alone.…”

“…The ratio provides a method for hydrological comparisons among deltas. However, use of this index for comparative pursuits is restricted to larger deltas, as demonstrated by Poulos et al (1993), because the seasonal variability in river discharge and sediment load in small delta systems is of greater significance to the hydrological characteristics of the delta than just the effective discharge and wave climate alone.Deltas in cold regions cycle through phases of ice-dominated and fluvial-dominated hydrological conditions (Dupre and Thompson, 1979;Walker, 1998). The influence of ice has a significant control on the flow regime, fluvial processes, and morphology of northern deltas (Prowse, 2001).…”

“…The most dynamic period of hydrologic and geomorphic change in northern deltas is the spring freshet when peak annual water levels and/or icejamming often cause flooding of large sections of the subaerial delta. This also has a significant impact on the biological productivity of northern deltas because large volumes of nutrient-rich sediment are deposited during the spring freshet Prowse and Conly, 1998).The formative processes of lacustrine deltas are not significantly different from those of marine deltas, although seasonal variations in river and sediment load are particularly important (Poulos et al, 1993). For instance, Andren (1994) noted the significance of seasonal changes in river discharge to the dispersal of flow into the Laitaure delta distributaries.…”