Riga, Gulf of

(redirected from Gulf of Riga)
Also found in: Dictionary, Thesaurus, Wikipedia.

Riga, Gulf of,

eastern arm of the Baltic Sea, bordering on Estonia and on Latvia. At its mouth it is nearly closed off by the Estonian island of Saaremaa. The gulf, which is frozen from December to April, receives the Western Dvina (Daugava) River. Riga and Pärnu are the chief ports.

Riga, Gulf of

 

a gulf of the Baltic Sea off the coast of the Estonian and Latvian SSR’s. Extending inland for 174 km, the gulf has an area of 18,100 sq km. It is separated from the open sea by the Moonsund (West Estonian) Islands, and it is connected with the sea through the Irbe Strait and the Suur, Väike, Muhu, and Soela sounds. The gulf has a maximum depth of 62 m. Among the larger islands in the gulf are Ruhnu and Kihnu. Most of the coast is low-lying and sandy. The Zapadnaia Dvina (Daugava), Lielupe, and Gauja rivers empty into the gulf.

The water temperature reaches 18°C in summer and averages 0-1 °C in winter. The salinity is 3.5-6 parts per thousand. There are inertia currents with an average velocity of 8 cm per sec. The gulf freezes over from December through April. The largest port on the gulf is Riga, at the mouth of the Zapadnaia Dvina. Other important cities include the resort of Jūrmala on the southern coast, the port of Pärnu on the northern coast, and Kingisepp on Saaremaa Island.

References in periodicals archive ?
The age-specific herring (Clupea harengus membrans) weight (WAA) data averaged yearly between 1977 and 2012 from the Gulf of Riga were used (ICES, 2013).
Connection of Gulf of Riga Islands to the Baltic Heights System 1977, in 7th International Conference on Environmental Engineering: Selected papers.
of samples By diving By grab Area A B A B A B Baltic Proper 268 532 201 449 46 83 Gulf of Riga 251 2052 71 945 157 1107 West Estonian 254 412 44 334 141 78 Archipelago Sea Gulf of Finland 1085 1252 1085 533 0 719 Total 1858 4248 1401 2261 344 1987 Eelgrass By trawling present Area A B A B Baltic Proper 21 0 5 7 Gulf of Riga 23 0 4 14 West Estonian 69 0 13 15 Archipelago Sea Gulf of Finland 0 0 14 8 Total 113 0 36 44 Matching % of eelgrass findings findings Area A B A & B Baltic Proper 2.
The concentration is compared with the neighbouring Gulf of Riga with similar atmospheric conditions: 1) initial ice extent growth was delayed by about two weeks, 2) in the second half of January the mean ice concentration was reduced more drastically--from about 90 to 20-40%, 3) in February the concentration increased to about 60%, but remained until the break-up by more than 30% lower than in the Gulf of Finland.
Typical shallow-crustal granites with rapakivi texture are found in the central part (Bogatikov & Birkis 1973), while subvolcanic granophyres occupy large areas in its northern part--on the basement of Ruhnu Island in the Gulf of Riga and in the southwestern part of Saaremaa Island (Kuuspalu 1975; Puura et al.
The mean concentrations of lead in the eelpout (muscle, liver, and gonads) from Muuga and the eelpout and smelt (muscle, liver, and gonads) from the Tvarminne area were also distinct from most corresponding results from the other sampling stations (Finnish Archipelago Sea, Gulf of Riga, and Kiel Fjord).
The dataset, generated for these nearshore cells, adequately characterizes the wave loads along relatively straight coastlines such as the coast of Lithuania and Latvia, and part of Estonian coast in the Gulf of Riga as well as Narva Bay.
The sediment sequence in Core 21 in the Gulf of Riga (~17 km SSE from Kihnu Island) shows a long continuous vegetation development (Kalnina 1997, 2001) starting with the Saalian late glacial, continuing through the Eemian Interglaciation and ending in the Weichselian Glaciation.
All periodic oscillations in the Gulf of Riga as a water basin and also water exchange processes in the straits, induced by local pressure differences, are expected to have periods near the eigenperiods of the Gulf of Riga.
Saaremaa -also eager to be host in 2009-lies in the Gulf of Riga and has a population of 40,000.