The Gulf of Gera

The Gulf of Gera as a “Physical Measure”

 

By Makis Axiotis
The Gulf consists of an ovoid basin and a narrow channel connecting it with the Aegean. The distance from the mouth (just 275m wide) in the southeast to its inner cove (in the northeast) is 13.2 km long, from which 4.2 km belong to its narrow channel (from Perama). The widest part of the sea basin is 4.23 km, while the passage (“perasma”) from Perama to Koundouroudia is about 1km.

The surface of the ovoid basin is about 42 sq.km, while the water volume (up to Palaioloutro) is 46 million cubic metres. According to depth measurements carried out, the sea basin depth increases from the coast to the maximum point of 20m at its centre. In the channel, some “thresholds” are formed, so the depth starts at 30m outside the mouth, and in its first part it reaches 20m at the distance of Palaioloutro and 16m at the distance of the cove of Loutra1 (see bathymetric maps). Geogia Pe-Piper’s approach about the existence of a lake in the place of today’s basin is interesting. The main characteristic of the “imposing declivity” of the north border is a line of faults (the cut mountain of Larsos and the other rocky heights). The gulf had been larger than today. The river of Evergetoulas formed the big alluvial plain of Ippeios.

 

1.”Ecological Study of Gera’s Gulf”, V.Α. Katsikis, 1986.