— 10 — 



2. The waters investigated 



The chart (fig. 3) shows the location of the four fjords on the Skagerrack coast, 

 which were the principal ones to be examined. 



Even this chart indicates that the water-circulation as well as the animal life must 

 differ considerably in these fjords. 



A survey of the special charts, reproduced below, will tend to strengthen this impression. 



The Sandnes Fjord (see fig. 4) is a narrow and open fjord about 4 miles long, 



cutting nearly due west into the continent from the open Skagerrack immediately to 



the south of Risor. In the mouth of this fjord there are some small islands. Between 



these, several deep channels varying between 20 and 50 — 60 m. in depth, run in from 



the irregular deep channel 

 connecting the fjord with the 

 open Skagerrack. 



In the middle portion of 

 this fjord the greatest depth 

 is 75 meters. Thence the 

 depth constantly decreases and 

 in the narrow inner portion 

 from Kjenes to the mouth of 

 the Lag river the depth varies 

 between 12 and 20 meters. 



The S0ndeled Fjord 

 (see fig. 4) is one of the most 

 remarkable fjords on the coast 

 of the Skagerrack. It lies im- 

 mediately to the north of Risor. 

 Outward it is closed by a belt 

 of large and small islands. 

 Between these a great number 

 of sounds of varying depths 

 communicate with the open 

 Skagerrack. Among these sounds the one running on the western side of the islands 

 past the township of Ris0r has a depth varying between 40 and 60 meters in the deepest 

 parts of the channel. In the outer portion of the fjord there is a somewhat broad basin 

 with depths up to 180 meters and this deep continues along the northern part of the 

 Sondeled Fjord "the Nordfjord". In the middle of this Nordfjord the bottom shoals to 

 about 40—50 meters and this depth continues to the island of Fr0ina, where the fjord 

 turns south, through two sounds, one shallow to the westward of the said island and 

 one deeper to the east of Froina , the Barm-sound which is about 20 m. deep with a 

 narrow irregular channel of up to 30 m. in the middle. 



The fjord then expands into a basin (the R0dsfjord) with a maximal depth of 75 m. 

 From this basin a channel about 60 m. deep runs eastward through the southern 

 branch of the fjord (the S0rfjord) which by islands and submarine ridges is divided into 

 a number of irregular channels where the depths vary from 20—30 to 40 and as an 

 exeption 50 m. in the eastern portion of this fjord. 



Fig. 3. Chart showing position of the four principal fjords examined. 



