Add to ORKGAn essentially pure aggregation of 0-group herring in Altafjord in northern Norway was acoustically surveyed on each of the first three days of December 1991. Measurements were made at 38 kHz during each survey and at 120 kHz during part of the second survey and all of the third survey. The data are expressed in terms of the area backscattering coefficient, applicable to the entire water column and averaged over intervals of 0.1 nautical mile. The spatial structure of the aggregation is characterized by the variogram. By means of geostatistics, estimates of abundance over the survey area are supplemented by estimates of variance
In January 1996 the stock of Norwegian spring-spawning herring (Clupea harengus) was acoustically s...
Standard echo integration methodology has been applied to the stock of Norwegian spring spawning he...
A large concentration of wintering herring was surveys continuously with acoustics over 37 hours in ...
An essentially pure aggregation of 0-group herring in Altafjord in northern Norway was acoustically...
An essentially pure aggregation of 0-group herring in Altafjord in northern Norway was acoustically ...
This paper describes an acoustic survey on small herring in a fjord in Northern Norway which was ca...
The spawning component and part of the juvenile stock of Norwegian spring spawning herring have bee...
In January 1996 the stock of Norwegian spring-spawning herring (Clupea harengus) was acoustically s...
The spawning component and part of the juvenile stock of Norwegian spring spawning herring have been...
The spawning stock of Norwegian spawning herring has been surveyed when wintering in the Vestfjord,...
Standard echo integration methodology has been applied to the stock of Norwegian spring spawning he...
The abundance of the mature component of the stock of Norwegian spring spawning herring has been est...
The abundance of the mature component of the stock of Norwegian spring spawning herring has been es...
The entrance region to Tysfjorden was acoustically surveyed a total of eleven times during the Dece...
A series of acoustic surveys of the adult component of the Norwegian spring-spawning herring was con...
In January 1996 the stock of Norwegian spring-spawning herring (Clupea harengus) was acoustically s...
Standard echo integration methodology has been applied to the stock of Norwegian spring spawning he...
A large concentration of wintering herring was surveys continuously with acoustics over 37 hours in ...
An essentially pure aggregation of 0-group herring in Altafjord in northern Norway was acoustically...
An essentially pure aggregation of 0-group herring in Altafjord in northern Norway was acoustically ...
This paper describes an acoustic survey on small herring in a fjord in Northern Norway which was ca...
The spawning component and part of the juvenile stock of Norwegian spring spawning herring have bee...
In January 1996 the stock of Norwegian spring-spawning herring (Clupea harengus) was acoustically s...
The spawning component and part of the juvenile stock of Norwegian spring spawning herring have been...
The spawning stock of Norwegian spawning herring has been surveyed when wintering in the Vestfjord,...
Standard echo integration methodology has been applied to the stock of Norwegian spring spawning he...
The abundance of the mature component of the stock of Norwegian spring spawning herring has been est...
The abundance of the mature component of the stock of Norwegian spring spawning herring has been es...
The entrance region to Tysfjorden was acoustically surveyed a total of eleven times during the Dece...
A series of acoustic surveys of the adult component of the Norwegian spring-spawning herring was con...
In January 1996 the stock of Norwegian spring-spawning herring (Clupea harengus) was acoustically s...
Standard echo integration methodology has been applied to the stock of Norwegian spring spawning he...
A large concentration of wintering herring was surveys continuously with acoustics over 37 hours in ...